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glib/gio/gfile.c
Sebastian Dröge b41147dfc9 The ETag returned by various GFile functions is nullable 
This was correctly annotated for proper return values but in case of out
parameters it was only annotated as (optional) and not additionally as
(nullable).
2021-02-17 10:01:36 +02:00

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
#include "config.h"
#ifdef __linux__
#include <sys/ioctl.h>
#include <errno.h>
/* See linux.git/fs/btrfs/ioctl.h */
#define BTRFS_IOCTL_MAGIC 0x94
#define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)
#endif
#ifdef HAVE_SPLICE
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
/*
* We duplicate the following Linux kernel header defines here so we can still
* run at full speed on modern kernels in cases where an old toolchain was used
* to build GLib. This is often done deliberately to allow shipping binaries
* that need to run on a wide range of systems.
*/
#ifndef F_SETPIPE_SZ
#define F_SETPIPE_SZ 1031
#endif
#ifndef F_GETPIPE_SZ
#define F_GETPIPE_SZ 1032
#endif
#endif
#include <string.h>
#include <sys/types.h>
#include "gfile.h"
#include "glib/gstdio.h"
#ifdef G_OS_UNIX
#include "glib-unix.h"
#endif
#include "gvfs.h"
#include "gtask.h"
#include "gfileattribute-priv.h"
#include "gfiledescriptorbased.h"
#include "gpollfilemonitor.h"
#include "gappinfo.h"
#include "gfileinputstream.h"
#include "gfileoutputstream.h"
#include "glocalfileoutputstream.h"
#include "glocalfileiostream.h"
#include "glocalfile.h"
#include "gcancellable.h"
#include "gasyncresult.h"
#include "gioerror.h"
#include "glibintl.h"
/**
* SECTION:gfile
* @short_description: File and Directory Handling
* @include: gio/gio.h
* @see_also: #GFileInfo, #GFileEnumerator
*
* #GFile is a high level abstraction for manipulating files on a
* virtual file system. #GFiles are lightweight, immutable objects
* that do no I/O upon creation. It is necessary to understand that
* #GFile objects do not represent files, merely an identifier for a
* file. All file content I/O is implemented as streaming operations
* (see #GInputStream and #GOutputStream).
*
* To construct a #GFile, you can use:
* - g_file_new_for_path() if you have a path.
* - g_file_new_for_uri() if you have a URI.
* - g_file_new_for_commandline_arg() for a command line argument.
* - g_file_new_tmp() to create a temporary file from a template.
* - g_file_parse_name() from a UTF-8 string gotten from g_file_get_parse_name().
* - g_file_new_build_filename() to create a file from path elements.
*
* One way to think of a #GFile is as an abstraction of a pathname. For
* normal files the system pathname is what is stored internally, but as
* #GFiles are extensible it could also be something else that corresponds
* to a pathname in a userspace implementation of a filesystem.
*
* #GFiles make up hierarchies of directories and files that correspond to
* the files on a filesystem. You can move through the file system with
* #GFile using g_file_get_parent() to get an identifier for the parent
* directory, g_file_get_child() to get a child within a directory,
* g_file_resolve_relative_path() to resolve a relative path between two
* #GFiles. There can be multiple hierarchies, so you may not end up at
* the same root if you repeatedly call g_file_get_parent() on two different
* files.
*
* All #GFiles have a basename (get with g_file_get_basename()). These names
* are byte strings that are used to identify the file on the filesystem
* (relative to its parent directory) and there is no guarantees that they
* have any particular charset encoding or even make any sense at all. If
* you want to use filenames in a user interface you should use the display
* name that you can get by requesting the
* %G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME attribute with g_file_query_info().
* This is guaranteed to be in UTF-8 and can be used in a user interface.
* But always store the real basename or the #GFile to use to actually
* access the file, because there is no way to go from a display name to
* the actual name.
*
* Using #GFile as an identifier has the same weaknesses as using a path
* in that there may be multiple aliases for the same file. For instance,
* hard or soft links may cause two different #GFiles to refer to the same
* file. Other possible causes for aliases are: case insensitive filesystems,
* short and long names on FAT/NTFS, or bind mounts in Linux. If you want to
* check if two #GFiles point to the same file you can query for the
* %G_FILE_ATTRIBUTE_ID_FILE attribute. Note that #GFile does some trivial
* canonicalization of pathnames passed in, so that trivial differences in
* the path string used at creation (duplicated slashes, slash at end of
* path, "." or ".." path segments, etc) does not create different #GFiles.
*
* Many #GFile operations have both synchronous and asynchronous versions
* to suit your application. Asynchronous versions of synchronous functions
* simply have _async() appended to their function names. The asynchronous
* I/O functions call a #GAsyncReadyCallback which is then used to finalize
* the operation, producing a GAsyncResult which is then passed to the
* function's matching _finish() operation.
*
* It is highly recommended to use asynchronous calls when running within a
* shared main loop, such as in the main thread of an application. This avoids
* I/O operations blocking other sources on the main loop from being dispatched.
* Synchronous I/O operations should be performed from worker threads. See the
* [introduction to asynchronous programming section][async-programming] for
* more.
*
* Some #GFile operations almost always take a noticeable amount of time, and
* so do not have synchronous analogs. Notable cases include:
* - g_file_mount_mountable() to mount a mountable file.
* - g_file_unmount_mountable_with_operation() to unmount a mountable file.
* - g_file_eject_mountable_with_operation() to eject a mountable file.
*
* ## Entity Tags # {#gfile-etag}
*
* One notable feature of #GFiles are entity tags, or "etags" for
* short. Entity tags are somewhat like a more abstract version of the
* traditional mtime, and can be used to quickly determine if the file
* has been modified from the version on the file system. See the
* HTTP 1.1
* [specification](http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html)
* for HTTP Etag headers, which are a very similar concept.
*/
static void g_file_real_query_info_async (GFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static GFileInfo * g_file_real_query_info_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_query_filesystem_info_async (GFile *file,
const char *attributes,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static GFileInfo * g_file_real_query_filesystem_info_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_enumerate_children_async (GFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static GFileEnumerator * g_file_real_enumerate_children_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_read_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static GFileInputStream * g_file_real_read_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_append_to_async (GFile *file,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static GFileOutputStream *g_file_real_append_to_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_create_async (GFile *file,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static GFileOutputStream *g_file_real_create_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_replace_async (GFile *file,
const char *etag,
gboolean make_backup,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static GFileOutputStream *g_file_real_replace_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_delete_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static gboolean g_file_real_delete_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_trash_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static gboolean g_file_real_trash_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_make_directory_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static gboolean g_file_real_make_directory_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_open_readwrite_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static GFileIOStream * g_file_real_open_readwrite_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_create_readwrite_async (GFile *file,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static GFileIOStream * g_file_real_create_readwrite_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_replace_readwrite_async (GFile *file,
const char *etag,
gboolean make_backup,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static GFileIOStream * g_file_real_replace_readwrite_finish (GFile *file,
GAsyncResult *res,
GError **error);
static gboolean g_file_real_set_attributes_from_info (GFile *file,
GFileInfo *info,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error);
static void g_file_real_set_display_name_async (GFile *file,
const char *display_name,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static GFile * g_file_real_set_display_name_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_set_attributes_async (GFile *file,
GFileInfo *info,
GFileQueryInfoFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static gboolean g_file_real_set_attributes_finish (GFile *file,
GAsyncResult *res,
GFileInfo **info,
GError **error);
static void g_file_real_find_enclosing_mount_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
static GMount * g_file_real_find_enclosing_mount_finish (GFile *file,
GAsyncResult *res,
GError **error);
static void g_file_real_copy_async (GFile *source,
GFile *destination,
GFileCopyFlags flags,
int io_priority,
GCancellable *cancellable,
GFileProgressCallback progress_callback,
gpointer progress_callback_data,
GAsyncReadyCallback callback,
gpointer user_data);
static gboolean g_file_real_copy_finish (GFile *file,
GAsyncResult *res,
GError **error);
static gboolean g_file_real_measure_disk_usage (GFile *file,
GFileMeasureFlags flags,
GCancellable *cancellable,
GFileMeasureProgressCallback progress_callback,
gpointer progress_data,
guint64 *disk_usage,
guint64 *num_dirs,
guint64 *num_files,
GError **error);
static void g_file_real_measure_disk_usage_async (GFile *file,
GFileMeasureFlags flags,
gint io_priority,
GCancellable *cancellable,
GFileMeasureProgressCallback progress_callback,
gpointer progress_data,
GAsyncReadyCallback callback,
gpointer user_data);
static gboolean g_file_real_measure_disk_usage_finish (GFile *file,
GAsyncResult *result,
guint64 *disk_usage,
guint64 *num_dirs,
guint64 *num_files,
GError **error);
typedef GFileIface GFileInterface;
G_DEFINE_INTERFACE (GFile, g_file, G_TYPE_OBJECT)
static void
g_file_default_init (GFileIface *iface)
{
iface->enumerate_children_async = g_file_real_enumerate_children_async;
iface->enumerate_children_finish = g_file_real_enumerate_children_finish;
iface->set_display_name_async = g_file_real_set_display_name_async;
iface->set_display_name_finish = g_file_real_set_display_name_finish;
iface->query_info_async = g_file_real_query_info_async;
iface->query_info_finish = g_file_real_query_info_finish;
iface->query_filesystem_info_async = g_file_real_query_filesystem_info_async;
iface->query_filesystem_info_finish = g_file_real_query_filesystem_info_finish;
iface->set_attributes_async = g_file_real_set_attributes_async;
iface->set_attributes_finish = g_file_real_set_attributes_finish;
iface->read_async = g_file_real_read_async;
iface->read_finish = g_file_real_read_finish;
iface->append_to_async = g_file_real_append_to_async;
iface->append_to_finish = g_file_real_append_to_finish;
iface->create_async = g_file_real_create_async;
iface->create_finish = g_file_real_create_finish;
iface->replace_async = g_file_real_replace_async;
iface->replace_finish = g_file_real_replace_finish;
iface->delete_file_async = g_file_real_delete_async;
iface->delete_file_finish = g_file_real_delete_finish;
iface->trash_async = g_file_real_trash_async;
iface->trash_finish = g_file_real_trash_finish;
iface->make_directory_async = g_file_real_make_directory_async;
iface->make_directory_finish = g_file_real_make_directory_finish;
iface->open_readwrite_async = g_file_real_open_readwrite_async;
iface->open_readwrite_finish = g_file_real_open_readwrite_finish;
iface->create_readwrite_async = g_file_real_create_readwrite_async;
iface->create_readwrite_finish = g_file_real_create_readwrite_finish;
iface->replace_readwrite_async = g_file_real_replace_readwrite_async;
iface->replace_readwrite_finish = g_file_real_replace_readwrite_finish;
iface->find_enclosing_mount_async = g_file_real_find_enclosing_mount_async;
iface->find_enclosing_mount_finish = g_file_real_find_enclosing_mount_finish;
iface->set_attributes_from_info = g_file_real_set_attributes_from_info;
iface->copy_async = g_file_real_copy_async;
iface->copy_finish = g_file_real_copy_finish;
iface->measure_disk_usage = g_file_real_measure_disk_usage;
iface->measure_disk_usage_async = g_file_real_measure_disk_usage_async;
iface->measure_disk_usage_finish = g_file_real_measure_disk_usage_finish;
}
/**
* g_file_is_native:
* @file: input #GFile
*
* Checks to see if a file is native to the platform.
*
* A native file is one expressed in the platform-native filename format,
* e.g. "C:\Windows" or "/usr/bin/". This does not mean the file is local,
* as it might be on a locally mounted remote filesystem.
*
* On some systems non-native files may be available using the native
* filesystem via a userspace filesystem (FUSE), in these cases this call
* will return %FALSE, but g_file_get_path() will still return a native path.
*
* This call does no blocking I/O.
*
* Returns: %TRUE if @file is native
*/
gboolean
g_file_is_native (GFile *file)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
iface = G_FILE_GET_IFACE (file);
return (* iface->is_native) (file);
}
/**
* g_file_has_uri_scheme:
* @file: input #GFile
* @uri_scheme: a string containing a URI scheme
*
* Checks to see if a #GFile has a given URI scheme.
*
* This call does no blocking I/O.
*
* Returns: %TRUE if #GFile's backend supports the
* given URI scheme, %FALSE if URI scheme is %NULL,
* not supported, or #GFile is invalid.
*/
gboolean
g_file_has_uri_scheme (GFile *file,
const char *uri_scheme)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (uri_scheme != NULL, FALSE);
iface = G_FILE_GET_IFACE (file);
return (* iface->has_uri_scheme) (file, uri_scheme);
}
/**
* g_file_get_uri_scheme:
* @file: input #GFile
*
* Gets the URI scheme for a #GFile.
* RFC 3986 decodes the scheme as:
* |[
* URI = scheme ":" hier-part [ "?" query ] [ "#" fragment ]
* ]|
* Common schemes include "file", "http", "ftp", etc.
*
* The scheme can be different from the one used to construct the #GFile,
* in that it might be replaced with one that is logically equivalent to the #GFile.
*
* This call does no blocking I/O.
*
* Returns: (nullable): a string containing the URI scheme for the given
* #GFile or %NULL if the #GFile was constructed with an invalid URI. The
* returned string should be freed with g_free() when no longer needed.
*/
char *
g_file_get_uri_scheme (GFile *file)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
iface = G_FILE_GET_IFACE (file);
return (* iface->get_uri_scheme) (file);
}
/**
* g_file_get_basename: (virtual get_basename)
* @file: input #GFile
*
* Gets the base name (the last component of the path) for a given #GFile.
*
* If called for the top level of a system (such as the filesystem root
* or a uri like sftp://host/) it will return a single directory separator
* (and on Windows, possibly a drive letter).
*
* The base name is a byte string (not UTF-8). It has no defined encoding
* or rules other than it may not contain zero bytes. If you want to use
* filenames in a user interface you should use the display name that you
* can get by requesting the %G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME
* attribute with g_file_query_info().
*
* This call does no blocking I/O.
*
* Returns: (type filename) (nullable): string containing the #GFile's
* base name, or %NULL if given #GFile is invalid. The returned string
* should be freed with g_free() when no longer needed.
*/
char *
g_file_get_basename (GFile *file)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
iface = G_FILE_GET_IFACE (file);
return (* iface->get_basename) (file);
}
/**
* g_file_get_path: (virtual get_path)
* @file: input #GFile
*
* Gets the local pathname for #GFile, if one exists. If non-%NULL, this is
* guaranteed to be an absolute, canonical path. It might contain symlinks.
*
* This call does no blocking I/O.
*
* Returns: (type filename) (nullable): string containing the #GFile's path,
* or %NULL if no such path exists. The returned string should be freed
* with g_free() when no longer needed.
*/
char *
g_file_get_path (GFile *file)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
iface = G_FILE_GET_IFACE (file);
return (* iface->get_path) (file);
}
static const char *
file_peek_path_generic (GFile *file)
{
const char *path;
static GQuark _file_path_quark = 0;
if (G_UNLIKELY (_file_path_quark) == 0)
_file_path_quark = g_quark_from_static_string ("gio-file-path");
/* We need to be careful about threading, as two threads calling
* g_file_peek_path() on the same file could race: both would see
* (g_object_get_qdata(…) == NULL) to begin with, both would generate and add
* the path, but the second thread to add it would end up freeing the path
* set by the first thread. The first thread would still return the pointer
* to that freed path, though, resulting an a read-after-free. Handle that
* with a compare-and-swap loop. The g_object_*_qdata() functions are atomic. */
while (TRUE)
{
gchar *new_path = NULL;
path = g_object_get_qdata ((GObject*)file, _file_path_quark);
if (path != NULL)
break;
new_path = g_file_get_path (file);
if (new_path == NULL)
return NULL;
/* By passing NULL here, we ensure we never replace existing data: */
if (g_object_replace_qdata ((GObject *) file, _file_path_quark,
NULL, (gpointer) new_path,
(GDestroyNotify) g_free, NULL))
{
path = new_path;
break;
}
else
g_free (new_path);
}
return path;
}
/**
* g_file_peek_path:
* @file: input #GFile
*
* Exactly like g_file_get_path(), but caches the result via
* g_object_set_qdata_full(). This is useful for example in C
* applications which mix `g_file_*` APIs with native ones. It
* also avoids an extra duplicated string when possible, so will be
* generally more efficient.
*
* This call does no blocking I/O.
*
* Returns: (type filename) (nullable): string containing the #GFile's path,
* or %NULL if no such path exists. The returned string is owned by @file.
* Since: 2.56
*/
const char *
g_file_peek_path (GFile *file)
{
if (G_IS_LOCAL_FILE (file))
return _g_local_file_get_filename ((GLocalFile *) file);
return file_peek_path_generic (file);
}
/**
* g_file_get_uri:
* @file: input #GFile
*
* Gets the URI for the @file.
*
* This call does no blocking I/O.
*
* Returns: a string containing the #GFile's URI. If the #GFile was constructed
* with an invalid URI, an invalid URI is returned.
* The returned string should be freed with g_free()
* when no longer needed.
*/
char *
g_file_get_uri (GFile *file)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
iface = G_FILE_GET_IFACE (file);
return (* iface->get_uri) (file);
}
/**
* g_file_get_parse_name:
* @file: input #GFile
*
* Gets the parse name of the @file.
* A parse name is a UTF-8 string that describes the
* file such that one can get the #GFile back using
* g_file_parse_name().
*
* This is generally used to show the #GFile as a nice
* full-pathname kind of string in a user interface,
* like in a location entry.
*
* For local files with names that can safely be converted
* to UTF-8 the pathname is used, otherwise the IRI is used
* (a form of URI that allows UTF-8 characters unescaped).
*
* This call does no blocking I/O.
*
* Returns: a string containing the #GFile's parse name.
* The returned string should be freed with g_free()
* when no longer needed.
*/
char *
g_file_get_parse_name (GFile *file)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
iface = G_FILE_GET_IFACE (file);
return (* iface->get_parse_name) (file);
}
/**
* g_file_dup:
* @file: input #GFile
*
* Duplicates a #GFile handle. This operation does not duplicate
* the actual file or directory represented by the #GFile; see
* g_file_copy() if attempting to copy a file.
*
* g_file_dup() is useful when a second handle is needed to the same underlying
* file, for use in a separate thread (#GFile is not thread-safe). For use
* within the same thread, use g_object_ref() to increment the existing object’s
* reference count.
*
* This call does no blocking I/O.
*
* Returns: (transfer full): a new #GFile that is a duplicate
* of the given #GFile.
*/
GFile *
g_file_dup (GFile *file)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
iface = G_FILE_GET_IFACE (file);
return (* iface->dup) (file);
}
/**
* g_file_hash:
* @file: (type GFile): #gconstpointer to a #GFile
*
* Creates a hash value for a #GFile.
*
* This call does no blocking I/O.
*
* Virtual: hash
* Returns: 0 if @file is not a valid #GFile, otherwise an
* integer that can be used as hash value for the #GFile.
* This function is intended for easily hashing a #GFile to
* add to a #GHashTable or similar data structure.
*/
guint
g_file_hash (gconstpointer file)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), 0);
iface = G_FILE_GET_IFACE (file);
return (* iface->hash) ((GFile *)file);
}
/**
* g_file_equal:
* @file1: the first #GFile
* @file2: the second #GFile
*
* Checks if the two given #GFiles refer to the same file.
*
* Note that two #GFiles that differ can still refer to the same
* file on the filesystem due to various forms of filename
* aliasing.
*
* This call does no blocking I/O.
*
* Returns: %TRUE if @file1 and @file2 are equal.
*/
gboolean
g_file_equal (GFile *file1,
GFile *file2)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file1), FALSE);
g_return_val_if_fail (G_IS_FILE (file2), FALSE);
if (file1 == file2)
return TRUE;
if (G_TYPE_FROM_INSTANCE (file1) != G_TYPE_FROM_INSTANCE (file2))
return FALSE;
iface = G_FILE_GET_IFACE (file1);
return (* iface->equal) (file1, file2);
}
/**
* g_file_get_parent:
* @file: input #GFile
*
* Gets the parent directory for the @file.
* If the @file represents the root directory of the
* file system, then %NULL will be returned.
*
* This call does no blocking I/O.
*
* Returns: (nullable) (transfer full): a #GFile structure to the
* parent of the given #GFile or %NULL if there is no parent. Free
* the returned object with g_object_unref().
*/
GFile *
g_file_get_parent (GFile *file)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
iface = G_FILE_GET_IFACE (file);
return (* iface->get_parent) (file);
}
/**
* g_file_has_parent:
* @file: input #GFile
* @parent: (nullable): the parent to check for, or %NULL
*
* Checks if @file has a parent, and optionally, if it is @parent.
*
* If @parent is %NULL then this function returns %TRUE if @file has any
* parent at all. If @parent is non-%NULL then %TRUE is only returned
* if @file is an immediate child of @parent.
*
* Returns: %TRUE if @file is an immediate child of @parent (or any parent in
* the case that @parent is %NULL).
*
* Since: 2.24
*/
gboolean
g_file_has_parent (GFile *file,
GFile *parent)
{
GFile *actual_parent;
gboolean result;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (parent == NULL || G_IS_FILE (parent), FALSE);
actual_parent = g_file_get_parent (file);
if (actual_parent != NULL)
{
if (parent != NULL)
result = g_file_equal (parent, actual_parent);
else
result = TRUE;
g_object_unref (actual_parent);
}
else
result = FALSE;
return result;
}
/**
* g_file_get_child:
* @file: input #GFile
* @name: (type filename): string containing the child's basename
*
* Gets a child of @file with basename equal to @name.
*
* Note that the file with that specific name might not exist, but
* you can still have a #GFile that points to it. You can use this
* for instance to create that file.
*
* This call does no blocking I/O.
*
* Returns: (transfer full): a #GFile to a child specified by @name.
* Free the returned object with g_object_unref().
*/
GFile *
g_file_get_child (GFile *file,
const char *name)
{
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (name != NULL, NULL);
return g_file_resolve_relative_path (file, name);
}
/**
* g_file_get_child_for_display_name:
* @file: input #GFile
* @display_name: string to a possible child
* @error: return location for an error
*
* Gets the child of @file for a given @display_name (i.e. a UTF-8
* version of the name). If this function fails, it returns %NULL
* and @error will be set. This is very useful when constructing a
* #GFile for a new file and the user entered the filename in the
* user interface, for instance when you select a directory and
* type a filename in the file selector.
*
* This call does no blocking I/O.
*
* Returns: (transfer full): a #GFile to the specified child, or
* %NULL if the display name couldn't be converted.
* Free the returned object with g_object_unref().
*/
GFile *
g_file_get_child_for_display_name (GFile *file,
const char *display_name,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (display_name != NULL, NULL);
iface = G_FILE_GET_IFACE (file);
return (* iface->get_child_for_display_name) (file, display_name, error);
}
/**
* g_file_has_prefix:
* @file: input #GFile
* @prefix: input #GFile
*
* Checks whether @file has the prefix specified by @prefix.
*
* In other words, if the names of initial elements of @file's
* pathname match @prefix. Only full pathname elements are matched,
* so a path like /foo is not considered a prefix of /foobar, only
* of /foo/bar.
*
* A #GFile is not a prefix of itself. If you want to check for
* equality, use g_file_equal().
*
* This call does no I/O, as it works purely on names. As such it can
* sometimes return %FALSE even if @file is inside a @prefix (from a
* filesystem point of view), because the prefix of @file is an alias
* of @prefix.
*
* Virtual: prefix_matches
* Returns: %TRUE if the @file's parent, grandparent, etc is @prefix,
* %FALSE otherwise.
*/
gboolean
g_file_has_prefix (GFile *file,
GFile *prefix)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_FILE (prefix), FALSE);
if (G_TYPE_FROM_INSTANCE (file) != G_TYPE_FROM_INSTANCE (prefix))
return FALSE;
iface = G_FILE_GET_IFACE (file);
/* The vtable function differs in arg order since
* we're using the old contains_file call
*/
return (* iface->prefix_matches) (prefix, file);
}
/**
* g_file_get_relative_path: (virtual get_relative_path)
* @parent: input #GFile
* @descendant: input #GFile
*
* Gets the path for @descendant relative to @parent.
*
* This call does no blocking I/O.
*
* Returns: (type filename) (nullable): string with the relative path from
* @descendant to @parent, or %NULL if @descendant doesn't have @parent as
* prefix. The returned string should be freed with g_free() when
* no longer needed.
*/
char *
g_file_get_relative_path (GFile *parent,
GFile *descendant)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (parent), NULL);
g_return_val_if_fail (G_IS_FILE (descendant), NULL);
if (G_TYPE_FROM_INSTANCE (parent) != G_TYPE_FROM_INSTANCE (descendant))
return NULL;
iface = G_FILE_GET_IFACE (parent);
return (* iface->get_relative_path) (parent, descendant);
}
/**
* g_file_resolve_relative_path:
* @file: input #GFile
* @relative_path: (type filename): a given relative path string
*
* Resolves a relative path for @file to an absolute path.
*
* This call does no blocking I/O.
*
* Returns: (transfer full): #GFile to the resolved path.
* %NULL if @relative_path is %NULL or if @file is invalid.
* Free the returned object with g_object_unref().
*/
GFile *
g_file_resolve_relative_path (GFile *file,
const char *relative_path)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (relative_path != NULL, NULL);
iface = G_FILE_GET_IFACE (file);
return (* iface->resolve_relative_path) (file, relative_path);
}
/**
* g_file_enumerate_children:
* @file: input #GFile
* @attributes: an attribute query string
* @flags: a set of #GFileQueryInfoFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: #GError for error reporting
*
* Gets the requested information about the files in a directory.
* The result is a #GFileEnumerator object that will give out
* #GFileInfo objects for all the files in the directory.
*
* The @attributes value is a string that specifies the file
* attributes that should be gathered. It is not an error if
* it's not possible to read a particular requested attribute
* from a file - it just won't be set. @attributes should
* be a comma-separated list of attributes or attribute wildcards.
* The wildcard "*" means all attributes, and a wildcard like
* "standard::*" means all attributes in the standard namespace.
* An example attribute query be "standard::*,owner::user".
* The standard attributes are available as defines, like
* #G_FILE_ATTRIBUTE_STANDARD_NAME.
*
* If @cancellable is not %NULL, then the operation can be cancelled
* by triggering the cancellable object from another thread. If the
* operation was cancelled, the error %G_IO_ERROR_CANCELLED will be
* returned.
*
* If the file does not exist, the %G_IO_ERROR_NOT_FOUND error will
* be returned. If the file is not a directory, the %G_IO_ERROR_NOT_DIRECTORY
* error will be returned. Other errors are possible too.
*
* Returns: (transfer full): A #GFileEnumerator if successful,
* %NULL on error. Free the returned object with g_object_unref().
*/
GFileEnumerator *
g_file_enumerate_children (GFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->enumerate_children == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return NULL;
}
return (* iface->enumerate_children) (file, attributes, flags,
cancellable, error);
}
/**
* g_file_enumerate_children_async:
* @file: input #GFile
* @attributes: an attribute query string
* @flags: a set of #GFileQueryInfoFlags
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call when the
* request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously gets the requested information about the files
* in a directory. The result is a #GFileEnumerator object that will
* give out #GFileInfo objects for all the files in the directory.
*
* For more details, see g_file_enumerate_children() which is
* the synchronous version of this call.
*
* When the operation is finished, @callback will be called. You can
* then call g_file_enumerate_children_finish() to get the result of
* the operation.
*/
void
g_file_enumerate_children_async (GFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->enumerate_children_async) (file,
attributes,
flags,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_enumerate_children_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @error: a #GError
*
* Finishes an async enumerate children operation.
* See g_file_enumerate_children_async().
*
* Returns: (transfer full): a #GFileEnumerator or %NULL
* if an error occurred.
* Free the returned object with g_object_unref().
*/
GFileEnumerator *
g_file_enumerate_children_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), NULL);
if (g_async_result_legacy_propagate_error (res, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
return (* iface->enumerate_children_finish) (file, res, error);
}
/**
* g_file_query_exists:
* @file: input #GFile
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
*
* Utility function to check if a particular file exists. This is
* implemented using g_file_query_info() and as such does blocking I/O.
*
* Note that in many cases it is [racy to first check for file existence](https://en.wikipedia.org/wiki/Time_of_check_to_time_of_use)
* and then execute something based on the outcome of that, because the
* file might have been created or removed in between the operations. The
* general approach to handling that is to not check, but just do the
* operation and handle the errors as they come.
*
* As an example of race-free checking, take the case of reading a file,
* and if it doesn't exist, creating it. There are two racy versions: read
* it, and on error create it; and: check if it exists, if not create it.
* These can both result in two processes creating the file (with perhaps
* a partially written file as the result). The correct approach is to
* always try to create the file with g_file_create() which will either
* atomically create the file or fail with a %G_IO_ERROR_EXISTS error.
*
* However, in many cases an existence check is useful in a user interface,
* for instance to make a menu item sensitive/insensitive, so that you don't
* have to fool users that something is possible and then just show an error
* dialog. If you do this, you should make sure to also handle the errors
* that can happen due to races when you execute the operation.
*
* Returns: %TRUE if the file exists (and can be detected without error),
* %FALSE otherwise (or if cancelled).
*/
gboolean
g_file_query_exists (GFile *file,
GCancellable *cancellable)
{
GFileInfo *info;
g_return_val_if_fail (G_IS_FILE(file), FALSE);
info = g_file_query_info (file, G_FILE_ATTRIBUTE_STANDARD_TYPE,
G_FILE_QUERY_INFO_NONE, cancellable, NULL);
if (info != NULL)
{
g_object_unref (info);
return TRUE;
}
return FALSE;
}
/**
* g_file_query_file_type:
* @file: input #GFile
* @flags: a set of #GFileQueryInfoFlags passed to g_file_query_info()
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
*
* Utility function to inspect the #GFileType of a file. This is
* implemented using g_file_query_info() and as such does blocking I/O.
*
* The primary use case of this method is to check if a file is
* a regular file, directory, or symlink.
*
* Returns: The #GFileType of the file and #G_FILE_TYPE_UNKNOWN
* if the file does not exist
*
* Since: 2.18
*/
GFileType
g_file_query_file_type (GFile *file,
GFileQueryInfoFlags flags,
GCancellable *cancellable)
{
GFileInfo *info;
GFileType file_type;
g_return_val_if_fail (G_IS_FILE(file), G_FILE_TYPE_UNKNOWN);
info = g_file_query_info (file, G_FILE_ATTRIBUTE_STANDARD_TYPE, flags,
cancellable, NULL);
if (info != NULL)
{
file_type = g_file_info_get_file_type (info);
g_object_unref (info);
}
else
file_type = G_FILE_TYPE_UNKNOWN;
return file_type;
}
/**
* g_file_query_info:
* @file: input #GFile
* @attributes: an attribute query string
* @flags: a set of #GFileQueryInfoFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError
*
* Gets the requested information about specified @file.
* The result is a #GFileInfo object that contains key-value
* attributes (such as the type or size of the file).
*
* The @attributes value is a string that specifies the file
* attributes that should be gathered. It is not an error if
* it's not possible to read a particular requested attribute
* from a file - it just won't be set. @attributes should be a
* comma-separated list of attributes or attribute wildcards.
* The wildcard "*" means all attributes, and a wildcard like
* "standard::*" means all attributes in the standard namespace.
* An example attribute query be "standard::*,owner::user".
* The standard attributes are available as defines, like
* #G_FILE_ATTRIBUTE_STANDARD_NAME.
*
* If @cancellable is not %NULL, then the operation can be cancelled
* by triggering the cancellable object from another thread. If the
* operation was cancelled, the error %G_IO_ERROR_CANCELLED will be
* returned.
*
* For symlinks, normally the information about the target of the
* symlink is returned, rather than information about the symlink
* itself. However if you pass #G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS
* in @flags the information about the symlink itself will be returned.
* Also, for symlinks that point to non-existing files the information
* about the symlink itself will be returned.
*
* If the file does not exist, the %G_IO_ERROR_NOT_FOUND error will be
* returned. Other errors are possible too, and depend on what kind of
* filesystem the file is on.
*
* Returns: (transfer full): a #GFileInfo for the given @file, or %NULL
* on error. Free the returned object with g_object_unref().
*/
GFileInfo *
g_file_query_info (GFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->query_info == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return NULL;
}
return (* iface->query_info) (file, attributes, flags, cancellable, error);
}
/**
* g_file_query_info_async:
* @file: input #GFile
* @attributes: an attribute query string
* @flags: a set of #GFileQueryInfoFlags
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call when the
* request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously gets the requested information about specified @file.
* The result is a #GFileInfo object that contains key-value attributes
* (such as type or size for the file).
*
* For more details, see g_file_query_info() which is the synchronous
* version of this call.
*
* When the operation is finished, @callback will be called. You can
* then call g_file_query_info_finish() to get the result of the operation.
*/
void
g_file_query_info_async (GFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->query_info_async) (file,
attributes,
flags,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_query_info_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @error: a #GError
*
* Finishes an asynchronous file info query.
* See g_file_query_info_async().
*
* Returns: (transfer full): #GFileInfo for given @file
* or %NULL on error. Free the returned object with
* g_object_unref().
*/
GFileInfo *
g_file_query_info_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), NULL);
if (g_async_result_legacy_propagate_error (res, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
return (* iface->query_info_finish) (file, res, error);
}
/**
* g_file_query_filesystem_info:
* @file: input #GFile
* @attributes: an attribute query string
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError
*
* Similar to g_file_query_info(), but obtains information
* about the filesystem the @file is on, rather than the file itself.
* For instance the amount of space available and the type of
* the filesystem.
*
* The @attributes value is a string that specifies the attributes
* that should be gathered. It is not an error if it's not possible
* to read a particular requested attribute from a file - it just
* won't be set. @attributes should be a comma-separated list of
* attributes or attribute wildcards. The wildcard "*" means all
* attributes, and a wildcard like "filesystem::*" means all attributes
* in the filesystem namespace. The standard namespace for filesystem
* attributes is "filesystem". Common attributes of interest are
* #G_FILE_ATTRIBUTE_FILESYSTEM_SIZE (the total size of the filesystem
* in bytes), #G_FILE_ATTRIBUTE_FILESYSTEM_FREE (number of bytes available),
* and #G_FILE_ATTRIBUTE_FILESYSTEM_TYPE (type of the filesystem).
*
* If @cancellable is not %NULL, then the operation can be cancelled
* by triggering the cancellable object from another thread. If the
* operation was cancelled, the error %G_IO_ERROR_CANCELLED will be
* returned.
*
* If the file does not exist, the %G_IO_ERROR_NOT_FOUND error will
* be returned. Other errors are possible too, and depend on what
* kind of filesystem the file is on.
*
* Returns: (transfer full): a #GFileInfo or %NULL if there was an error.
* Free the returned object with g_object_unref().
*/
GFileInfo *
g_file_query_filesystem_info (GFile *file,
const char *attributes,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->query_filesystem_info == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return NULL;
}
return (* iface->query_filesystem_info) (file, attributes, cancellable, error);
}
/**
* g_file_query_filesystem_info_async:
* @file: input #GFile
* @attributes: an attribute query string
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously gets the requested information about the filesystem
* that the specified @file is on. The result is a #GFileInfo object
* that contains key-value attributes (such as type or size for the
* file).
*
* For more details, see g_file_query_filesystem_info() which is the
* synchronous version of this call.
*
* When the operation is finished, @callback will be called. You can
* then call g_file_query_info_finish() to get the result of the
* operation.
*/
void
g_file_query_filesystem_info_async (GFile *file,
const char *attributes,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->query_filesystem_info_async) (file,
attributes,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_query_filesystem_info_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @error: a #GError
*
* Finishes an asynchronous filesystem info query.
* See g_file_query_filesystem_info_async().
*
* Returns: (transfer full): #GFileInfo for given @file
* or %NULL on error.
* Free the returned object with g_object_unref().
*/
GFileInfo *
g_file_query_filesystem_info_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), NULL);
if (g_async_result_legacy_propagate_error (res, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
return (* iface->query_filesystem_info_finish) (file, res, error);
}
/**
* g_file_find_enclosing_mount:
* @file: input #GFile
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError
*
* Gets a #GMount for the #GFile.
*
* #GMount is returned only for user interesting locations, see
* #GVolumeMonitor. If the #GFileIface for @file does not have a #mount,
* @error will be set to %G_IO_ERROR_NOT_FOUND and %NULL #will be returned.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: (transfer full): a #GMount where the @file is located
* or %NULL on error.
* Free the returned object with g_object_unref().
*/
GMount *
g_file_find_enclosing_mount (GFile *file,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->find_enclosing_mount == NULL)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND,
/* Translators: This is an error message when
* trying to find the enclosing (user visible)
* mount of a file, but none exists.
*/
_("Containing mount does not exist"));
return NULL;
}
return (* iface->find_enclosing_mount) (file, cancellable, error);
}
/**
* g_file_find_enclosing_mount_async:
* @file: a #GFile
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously gets the mount for the file.
*
* For more details, see g_file_find_enclosing_mount() which is
* the synchronous version of this call.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_find_enclosing_mount_finish() to
* get the result of the operation.
*/
void
g_file_find_enclosing_mount_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->find_enclosing_mount_async) (file,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_find_enclosing_mount_finish:
* @file: a #GFile
* @res: a #GAsyncResult
* @error: a #GError
*
* Finishes an asynchronous find mount request.
* See g_file_find_enclosing_mount_async().
*
* Returns: (transfer full): #GMount for given @file or %NULL on error.
* Free the returned object with g_object_unref().
*/
GMount *
g_file_find_enclosing_mount_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), NULL);
if (g_async_result_legacy_propagate_error (res, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
return (* iface->find_enclosing_mount_finish) (file, res, error);
}
/**
* g_file_read:
* @file: #GFile to read
* @cancellable: (nullable): a #GCancellable
* @error: a #GError, or %NULL
*
* Opens a file for reading. The result is a #GFileInputStream that
* can be used to read the contents of the file.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* If the file does not exist, the %G_IO_ERROR_NOT_FOUND error will be
* returned. If the file is a directory, the %G_IO_ERROR_IS_DIRECTORY
* error will be returned. Other errors are possible too, and depend
* on what kind of filesystem the file is on.
*
* Virtual: read_fn
* Returns: (transfer full): #GFileInputStream or %NULL on error.
* Free the returned object with g_object_unref().
*/
GFileInputStream *
g_file_read (GFile *file,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->read_fn == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return NULL;
}
return (* iface->read_fn) (file, cancellable, error);
}
/**
* g_file_append_to:
* @file: input #GFile
* @flags: a set of #GFileCreateFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Gets an output stream for appending data to the file.
* If the file doesn't already exist it is created.
*
* By default files created are generally readable by everyone,
* but if you pass #G_FILE_CREATE_PRIVATE in @flags the file
* will be made readable only to the current user, to the level that
* is supported on the target filesystem.
*
* If @cancellable is not %NULL, then the operation can be cancelled
* by triggering the cancellable object from another thread. If the
* operation was cancelled, the error %G_IO_ERROR_CANCELLED will be
* returned.
*
* Some file systems don't allow all file names, and may return an
* %G_IO_ERROR_INVALID_FILENAME error. If the file is a directory the
* %G_IO_ERROR_IS_DIRECTORY error will be returned. Other errors are
* possible too, and depend on what kind of filesystem the file is on.
*
* Returns: (transfer full): a #GFileOutputStream, or %NULL on error.
* Free the returned object with g_object_unref().
*/
GFileOutputStream *
g_file_append_to (GFile *file,
GFileCreateFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->append_to == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return NULL;
}
return (* iface->append_to) (file, flags, cancellable, error);
}
/**
* g_file_create:
* @file: input #GFile
* @flags: a set of #GFileCreateFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Creates a new file and returns an output stream for writing to it.
* The file must not already exist.
*
* By default files created are generally readable by everyone,
* but if you pass #G_FILE_CREATE_PRIVATE in @flags the file
* will be made readable only to the current user, to the level
* that is supported on the target filesystem.
*
* If @cancellable is not %NULL, then the operation can be cancelled
* by triggering the cancellable object from another thread. If the
* operation was cancelled, the error %G_IO_ERROR_CANCELLED will be
* returned.
*
* If a file or directory with this name already exists the
* %G_IO_ERROR_EXISTS error will be returned. Some file systems don't
* allow all file names, and may return an %G_IO_ERROR_INVALID_FILENAME
* error, and if the name is to long %G_IO_ERROR_FILENAME_TOO_LONG will
* be returned. Other errors are possible too, and depend on what kind
* of filesystem the file is on.
*
* Returns: (transfer full): a #GFileOutputStream for the newly created
* file, or %NULL on error.
* Free the returned object with g_object_unref().
*/
GFileOutputStream *
g_file_create (GFile *file,
GFileCreateFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->create == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return NULL;
}
return (* iface->create) (file, flags, cancellable, error);
}
/**
* g_file_replace:
* @file: input #GFile
* @etag: (nullable): an optional [entity tag][gfile-etag]
* for the current #GFile, or #NULL to ignore
* @make_backup: %TRUE if a backup should be created
* @flags: a set of #GFileCreateFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Returns an output stream for overwriting the file, possibly
* creating a backup copy of the file first. If the file doesn't exist,
* it will be created.
*
* This will try to replace the file in the safest way possible so
* that any errors during the writing will not affect an already
* existing copy of the file. For instance, for local files it
* may write to a temporary file and then atomically rename over
* the destination when the stream is closed.
*
* By default files created are generally readable by everyone,
* but if you pass #G_FILE_CREATE_PRIVATE in @flags the file
* will be made readable only to the current user, to the level that
* is supported on the target filesystem.
*
* If @cancellable is not %NULL, then the operation can be cancelled
* by triggering the cancellable object from another thread. If the
* operation was cancelled, the error %G_IO_ERROR_CANCELLED will be
* returned.
*
* If you pass in a non-%NULL @etag value and @file already exists, then
* this value is compared to the current entity tag of the file, and if
* they differ an %G_IO_ERROR_WRONG_ETAG error is returned. This
* generally means that the file has been changed since you last read
* it. You can get the new etag from g_file_output_stream_get_etag()
* after you've finished writing and closed the #GFileOutputStream. When
* you load a new file you can use g_file_input_stream_query_info() to
* get the etag of the file.
*
* If @make_backup is %TRUE, this function will attempt to make a
* backup of the current file before overwriting it. If this fails
* a %G_IO_ERROR_CANT_CREATE_BACKUP error will be returned. If you
* want to replace anyway, try again with @make_backup set to %FALSE.
*
* If the file is a directory the %G_IO_ERROR_IS_DIRECTORY error will
* be returned, and if the file is some other form of non-regular file
* then a %G_IO_ERROR_NOT_REGULAR_FILE error will be returned. Some
* file systems don't allow all file names, and may return an
* %G_IO_ERROR_INVALID_FILENAME error, and if the name is to long
* %G_IO_ERROR_FILENAME_TOO_LONG will be returned. Other errors are
* possible too, and depend on what kind of filesystem the file is on.
*
* Returns: (transfer full): a #GFileOutputStream or %NULL on error.
* Free the returned object with g_object_unref().
*/
GFileOutputStream *
g_file_replace (GFile *file,
const char *etag,
gboolean make_backup,
GFileCreateFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->replace == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return NULL;
}
/* Handle empty tag string as NULL in consistent way. */
if (etag && *etag == 0)
etag = NULL;
return (* iface->replace) (file, etag, make_backup, flags, cancellable, error);
}
/**
* g_file_open_readwrite:
* @file: #GFile to open
* @cancellable: (nullable): a #GCancellable
* @error: a #GError, or %NULL
*
* Opens an existing file for reading and writing. The result is
* a #GFileIOStream that can be used to read and write the contents
* of the file.
*
* If @cancellable is not %NULL, then the operation can be cancelled
* by triggering the cancellable object from another thread. If the
* operation was cancelled, the error %G_IO_ERROR_CANCELLED will be
* returned.
*
* If the file does not exist, the %G_IO_ERROR_NOT_FOUND error will
* be returned. If the file is a directory, the %G_IO_ERROR_IS_DIRECTORY
* error will be returned. Other errors are possible too, and depend on
* what kind of filesystem the file is on. Note that in many non-local
* file cases read and write streams are not supported, so make sure you
* really need to do read and write streaming, rather than just opening
* for reading or writing.
*
* Returns: (transfer full): #GFileIOStream or %NULL on error.
* Free the returned object with g_object_unref().
*
* Since: 2.22
*/
GFileIOStream *
g_file_open_readwrite (GFile *file,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->open_readwrite == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return NULL;
}
return (* iface->open_readwrite) (file, cancellable, error);
}
/**
* g_file_create_readwrite:
* @file: a #GFile
* @flags: a set of #GFileCreateFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: return location for a #GError, or %NULL
*
* Creates a new file and returns a stream for reading and
* writing to it. The file must not already exist.
*
* By default files created are generally readable by everyone,
* but if you pass #G_FILE_CREATE_PRIVATE in @flags the file
* will be made readable only to the current user, to the level
* that is supported on the target filesystem.
*
* If @cancellable is not %NULL, then the operation can be cancelled
* by triggering the cancellable object from another thread. If the
* operation was cancelled, the error %G_IO_ERROR_CANCELLED will be
* returned.
*
* If a file or directory with this name already exists, the
* %G_IO_ERROR_EXISTS error will be returned. Some file systems don't
* allow all file names, and may return an %G_IO_ERROR_INVALID_FILENAME
* error, and if the name is too long, %G_IO_ERROR_FILENAME_TOO_LONG
* will be returned. Other errors are possible too, and depend on what
* kind of filesystem the file is on.
*
* Note that in many non-local file cases read and write streams are
* not supported, so make sure you really need to do read and write
* streaming, rather than just opening for reading or writing.
*
* Returns: (transfer full): a #GFileIOStream for the newly created
* file, or %NULL on error.
* Free the returned object with g_object_unref().
*
* Since: 2.22
*/
GFileIOStream *
g_file_create_readwrite (GFile *file,
GFileCreateFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->create_readwrite == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return NULL;
}
return (* iface->create_readwrite) (file, flags, cancellable, error);
}
/**
* g_file_replace_readwrite:
* @file: a #GFile
* @etag: (nullable): an optional [entity tag][gfile-etag]
* for the current #GFile, or #NULL to ignore
* @make_backup: %TRUE if a backup should be created
* @flags: a set of #GFileCreateFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: return location for a #GError, or %NULL
*
* Returns an output stream for overwriting the file in readwrite mode,
* possibly creating a backup copy of the file first. If the file doesn't
* exist, it will be created.
*
* For details about the behaviour, see g_file_replace() which does the
* same thing but returns an output stream only.
*
* Note that in many non-local file cases read and write streams are not
* supported, so make sure you really need to do read and write streaming,
* rather than just opening for reading or writing.
*
* Returns: (transfer full): a #GFileIOStream or %NULL on error.
* Free the returned object with g_object_unref().
*
* Since: 2.22
*/
GFileIOStream *
g_file_replace_readwrite (GFile *file,
const char *etag,
gboolean make_backup,
GFileCreateFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->replace_readwrite == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return NULL;
}
return (* iface->replace_readwrite) (file, etag, make_backup, flags, cancellable, error);
}
/**
* g_file_read_async:
* @file: input #GFile
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously opens @file for reading.
*
* For more details, see g_file_read() which is
* the synchronous version of this call.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_read_finish() to get the result
* of the operation.
*/
void
g_file_read_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->read_async) (file,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_read_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes an asynchronous file read operation started with
* g_file_read_async().
*
* Returns: (transfer full): a #GFileInputStream or %NULL on error.
* Free the returned object with g_object_unref().
*/
GFileInputStream *
g_file_read_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), NULL);
if (g_async_result_legacy_propagate_error (res, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
return (* iface->read_finish) (file, res, error);
}
/**
* g_file_append_to_async:
* @file: input #GFile
* @flags: a set of #GFileCreateFlags
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously opens @file for appending.
*
* For more details, see g_file_append_to() which is
* the synchronous version of this call.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_append_to_finish() to get the result
* of the operation.
*/
void
g_file_append_to_async (GFile *file,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->append_to_async) (file,
flags,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_append_to_finish:
* @file: input #GFile
* @res: #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes an asynchronous file append operation started with
* g_file_append_to_async().
*
* Returns: (transfer full): a valid #GFileOutputStream
* or %NULL on error.
* Free the returned object with g_object_unref().
*/
GFileOutputStream *
g_file_append_to_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), NULL);
if (g_async_result_legacy_propagate_error (res, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
return (* iface->append_to_finish) (file, res, error);
}
/**
* g_file_create_async:
* @file: input #GFile
* @flags: a set of #GFileCreateFlags
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously creates a new file and returns an output stream
* for writing to it. The file must not already exist.
*
* For more details, see g_file_create() which is
* the synchronous version of this call.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_create_finish() to get the result
* of the operation.
*/
void
g_file_create_async (GFile *file,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->create_async) (file,
flags,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_create_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes an asynchronous file create operation started with
* g_file_create_async().
*
* Returns: (transfer full): a #GFileOutputStream or %NULL on error.
* Free the returned object with g_object_unref().
*/
GFileOutputStream *
g_file_create_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), NULL);
if (g_async_result_legacy_propagate_error (res, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
return (* iface->create_finish) (file, res, error);
}
/**
* g_file_replace_async:
* @file: input #GFile
* @etag: (nullable): an [entity tag][gfile-etag] for the current #GFile,
* or %NULL to ignore
* @make_backup: %TRUE if a backup should be created
* @flags: a set of #GFileCreateFlags
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously overwrites the file, replacing the contents,
* possibly creating a backup copy of the file first.
*
* For more details, see g_file_replace() which is
* the synchronous version of this call.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_replace_finish() to get the result
* of the operation.
*/
void
g_file_replace_async (GFile *file,
const char *etag,
gboolean make_backup,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->replace_async) (file,
etag,
make_backup,
flags,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_replace_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes an asynchronous file replace operation started with
* g_file_replace_async().
*
* Returns: (transfer full): a #GFileOutputStream, or %NULL on error.
* Free the returned object with g_object_unref().
*/
GFileOutputStream *
g_file_replace_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), NULL);
if (g_async_result_legacy_propagate_error (res, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
return (* iface->replace_finish) (file, res, error);
}
/**
* g_file_open_readwrite_async
* @file: input #GFile
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously opens @file for reading and writing.
*
* For more details, see g_file_open_readwrite() which is
* the synchronous version of this call.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_open_readwrite_finish() to get
* the result of the operation.
*
* Since: 2.22
*/
void
g_file_open_readwrite_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->open_readwrite_async) (file,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_open_readwrite_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes an asynchronous file read operation started with
* g_file_open_readwrite_async().
*
* Returns: (transfer full): a #GFileIOStream or %NULL on error.
* Free the returned object with g_object_unref().
*
* Since: 2.22
*/
GFileIOStream *
g_file_open_readwrite_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), NULL);
if (g_async_result_legacy_propagate_error (res, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
return (* iface->open_readwrite_finish) (file, res, error);
}
/**
* g_file_create_readwrite_async:
* @file: input #GFile
* @flags: a set of #GFileCreateFlags
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously creates a new file and returns a stream
* for reading and writing to it. The file must not already exist.
*
* For more details, see g_file_create_readwrite() which is
* the synchronous version of this call.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_create_readwrite_finish() to get
* the result of the operation.
*
* Since: 2.22
*/
void
g_file_create_readwrite_async (GFile *file,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->create_readwrite_async) (file,
flags,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_create_readwrite_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes an asynchronous file create operation started with
* g_file_create_readwrite_async().
*
* Returns: (transfer full): a #GFileIOStream or %NULL on error.
* Free the returned object with g_object_unref().
*
* Since: 2.22
*/
GFileIOStream *
g_file_create_readwrite_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), NULL);
if (g_async_result_legacy_propagate_error (res, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
return (* iface->create_readwrite_finish) (file, res, error);
}
/**
* g_file_replace_readwrite_async:
* @file: input #GFile
* @etag: (nullable): an [entity tag][gfile-etag] for the current #GFile,
* or %NULL to ignore
* @make_backup: %TRUE if a backup should be created
* @flags: a set of #GFileCreateFlags
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously overwrites the file in read-write mode,
* replacing the contents, possibly creating a backup copy
* of the file first.
*
* For more details, see g_file_replace_readwrite() which is
* the synchronous version of this call.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_replace_readwrite_finish() to get
* the result of the operation.
*
* Since: 2.22
*/
void
g_file_replace_readwrite_async (GFile *file,
const char *etag,
gboolean make_backup,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->replace_readwrite_async) (file,
etag,
make_backup,
flags,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_replace_readwrite_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes an asynchronous file replace operation started with
* g_file_replace_readwrite_async().
*
* Returns: (transfer full): a #GFileIOStream, or %NULL on error.
* Free the returned object with g_object_unref().
*
* Since: 2.22
*/
GFileIOStream *
g_file_replace_readwrite_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), NULL);
if (g_async_result_legacy_propagate_error (res, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
return (* iface->replace_readwrite_finish) (file, res, error);
}
static gboolean
copy_symlink (GFile *destination,
GFileCopyFlags flags,
GCancellable *cancellable,
const char *target,
GError **error)
{
GError *my_error;
gboolean tried_delete;
GFileInfo *info;
GFileType file_type;
tried_delete = FALSE;
retry:
my_error = NULL;
if (!g_file_make_symbolic_link (destination, target, cancellable, &my_error))
{
/* Maybe it already existed, and we want to overwrite? */
if (!tried_delete && (flags & G_FILE_COPY_OVERWRITE) &&
my_error->domain == G_IO_ERROR && my_error->code == G_IO_ERROR_EXISTS)
{
g_clear_error (&my_error);
/* Don't overwrite if the destination is a directory */
info = g_file_query_info (destination, G_FILE_ATTRIBUTE_STANDARD_TYPE,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, &my_error);
if (info != NULL)
{
file_type = g_file_info_get_file_type (info);
g_object_unref (info);
if (file_type == G_FILE_TYPE_DIRECTORY)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_IS_DIRECTORY,
_("Can’t copy over directory"));
return FALSE;
}
}
if (!g_file_delete (destination, cancellable, error))
return FALSE;
tried_delete = TRUE;
goto retry;
}
/* Nah, fail */
g_propagate_error (error, my_error);
return FALSE;
}
return TRUE;
}
static GFileInputStream *
open_source_for_copy (GFile *source,
GFile *destination,
GFileCopyFlags flags,
GCancellable *cancellable,
GError **error)
{
GError *my_error;
GFileInputStream *ret;
GFileInfo *info;
GFileType file_type;
my_error = NULL;
ret = g_file_read (source, cancellable, &my_error);
if (ret != NULL)
return ret;
/* There was an error opening the source, try to set a good error for it: */
if (my_error->domain == G_IO_ERROR && my_error->code == G_IO_ERROR_IS_DIRECTORY)
{
/* The source is a directory, don't fail with WOULD_RECURSE immediately,
* as that is less useful to the app. Better check for errors on the
* target instead.
*/
g_error_free (my_error);
my_error = NULL;
info = g_file_query_info (destination, G_FILE_ATTRIBUTE_STANDARD_TYPE,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, &my_error);
if (info != NULL &&
g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_STANDARD_TYPE))
{
file_type = g_file_info_get_file_type (info);
g_object_unref (info);
if (flags & G_FILE_COPY_OVERWRITE)
{
if (file_type == G_FILE_TYPE_DIRECTORY)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_WOULD_MERGE,
_("Can’t copy directory over directory"));
return NULL;
}
/* continue to would_recurse error */
}
else
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_EXISTS,
_("Target file exists"));
return NULL;
}
}
else
{
/* Error getting info from target, return that error
* (except for NOT_FOUND, which is no error here)
*/
g_clear_object (&info);
if (my_error != NULL && !g_error_matches (my_error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
{
g_propagate_error (error, my_error);
return NULL;
}
g_clear_error (&my_error);
}
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_WOULD_RECURSE,
_("Can’t recursively copy directory"));
return NULL;
}
g_propagate_error (error, my_error);
return NULL;
}
static gboolean
should_copy (GFileAttributeInfo *info,
gboolean copy_all_attributes,
gboolean skip_perms)
{
if (skip_perms && strcmp(info->name, "unix::mode") == 0)
return FALSE;
if (copy_all_attributes)
return info->flags & G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED;
return info->flags & G_FILE_ATTRIBUTE_INFO_COPY_WITH_FILE;
}
/**
* g_file_build_attribute_list_for_copy:
* @file: a #GFile to copy attributes to
* @flags: a set of #GFileCopyFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, %NULL to ignore
*
* Prepares the file attribute query string for copying to @file.
*
* This function prepares an attribute query string to be
* passed to g_file_query_info() to get a list of attributes
* normally copied with the file (see g_file_copy_attributes()
* for the detailed description). This function is used by the
* implementation of g_file_copy_attributes() and is useful
* when one needs to query and set the attributes in two
* stages (e.g., for recursive move of a directory).
*
* Returns: an attribute query string for g_file_query_info(),
* or %NULL if an error occurs.
*
* Since: 2.68
*/
char *
g_file_build_attribute_list_for_copy (GFile *file,
GFileCopyFlags flags,
GCancellable *cancellable,
GError **error)
{
char *ret = NULL;
GFileAttributeInfoList *attributes = NULL, *namespaces = NULL;
GString *s = NULL;
gboolean first;
int i;
gboolean copy_all_attributes;
gboolean skip_perms;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
copy_all_attributes = flags & G_FILE_COPY_ALL_METADATA;
skip_perms = (flags & G_FILE_COPY_TARGET_DEFAULT_PERMS) != 0;
/* Ignore errors here, if the target supports no attributes there is
* nothing to copy. We still honor the cancellable though.
*/
attributes = g_file_query_settable_attributes (file, cancellable, NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
goto out;
namespaces = g_file_query_writable_namespaces (file, cancellable, NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
goto out;
if (attributes == NULL && namespaces == NULL)
goto out;
first = TRUE;
s = g_string_new ("");
if (attributes)
{
for (i = 0; i < attributes->n_infos; i++)
{
if (should_copy (&attributes->infos[i], copy_all_attributes, skip_perms))
{
if (first)
first = FALSE;
else
g_string_append_c (s, ',');
g_string_append (s, attributes->infos[i].name);
}
}
}
if (namespaces)
{
for (i = 0; i < namespaces->n_infos; i++)
{
if (should_copy (&namespaces->infos[i], copy_all_attributes, FALSE))
{
if (first)
first = FALSE;
else
g_string_append_c (s, ',');
g_string_append (s, namespaces->infos[i].name);
g_string_append (s, "::*");
}
}
}
ret = g_string_free (s, FALSE);
s = NULL;
out:
if (s)
g_string_free (s, TRUE);
if (attributes)
g_file_attribute_info_list_unref (attributes);
if (namespaces)
g_file_attribute_info_list_unref (namespaces);
return ret;
}
/**
* g_file_copy_attributes:
* @source: a #GFile with attributes
* @destination: a #GFile to copy attributes to
* @flags: a set of #GFileCopyFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, %NULL to ignore
*
* Copies the file attributes from @source to @destination.
*
* Normally only a subset of the file attributes are copied,
* those that are copies in a normal file copy operation
* (which for instance does not include e.g. owner). However
* if #G_FILE_COPY_ALL_METADATA is specified in @flags, then
* all the metadata that is possible to copy is copied. This
* is useful when implementing move by copy + delete source.
*
* Returns: %TRUE if the attributes were copied successfully,
* %FALSE otherwise.
*/
gboolean
g_file_copy_attributes (GFile *source,
GFile *destination,
GFileCopyFlags flags,
GCancellable *cancellable,
GError **error)
{
char *attrs_to_read;
gboolean res;
GFileInfo *info;
gboolean source_nofollow_symlinks;
attrs_to_read = g_file_build_attribute_list_for_copy (destination, flags,
cancellable, error);
if (!attrs_to_read)
return FALSE;
source_nofollow_symlinks = flags & G_FILE_COPY_NOFOLLOW_SYMLINKS;
/* Ignore errors here, if we can't read some info (e.g. if it doesn't exist)
* we just don't copy it.
*/
info = g_file_query_info (source, attrs_to_read,
source_nofollow_symlinks ? G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS:0,
cancellable,
NULL);
g_free (attrs_to_read);
res = TRUE;
if (info)
{
res = g_file_set_attributes_from_info (destination,
info,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable,
error);
g_object_unref (info);
}
return res;
}
/* 256k minus malloc overhead */
#define STREAM_BUFFER_SIZE (1024*256 - 2 *sizeof(gpointer))
static gboolean
copy_stream_with_progress (GInputStream *in,
GOutputStream *out,
GFile *source,
GCancellable *cancellable,
GFileProgressCallback progress_callback,
gpointer progress_callback_data,
GError **error)
{
gssize n_read;
gsize n_written;
goffset current_size;
char *buffer;
gboolean res;
goffset total_size;
GFileInfo *info;
total_size = -1;
/* avoid performance impact of querying total size when it's not needed */
if (progress_callback)
{
info = g_file_input_stream_query_info (G_FILE_INPUT_STREAM (in),
G_FILE_ATTRIBUTE_STANDARD_SIZE,
cancellable, NULL);
if (info)
{
if (g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_STANDARD_SIZE))
total_size = g_file_info_get_size (info);
g_object_unref (info);
}
if (total_size == -1)
{
info = g_file_query_info (source,
G_FILE_ATTRIBUTE_STANDARD_SIZE,
G_FILE_QUERY_INFO_NONE,
cancellable, NULL);
if (info)
{
if (g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_STANDARD_SIZE))
total_size = g_file_info_get_size (info);
g_object_unref (info);
}
}
}
if (total_size == -1)
total_size = 0;
buffer = g_malloc0 (STREAM_BUFFER_SIZE);
current_size = 0;
res = TRUE;
while (TRUE)
{
n_read = g_input_stream_read (in, buffer, STREAM_BUFFER_SIZE, cancellable, error);
if (n_read == -1)
{
res = FALSE;
break;
}
if (n_read == 0)
break;
current_size += n_read;
res = g_output_stream_write_all (out, buffer, n_read, &n_written, cancellable, error);
if (!res)
break;
if (progress_callback)
progress_callback (current_size, total_size, progress_callback_data);
}
g_free (buffer);
/* Make sure we send full copied size */
if (progress_callback)
progress_callback (current_size, total_size, progress_callback_data);
return res;
}
#ifdef HAVE_SPLICE
static gboolean
do_splice (int fd_in,
loff_t *off_in,
int fd_out,
loff_t *off_out,
size_t len,
long *bytes_transferd,
GError **error)
{
long result;
retry:
result = splice (fd_in, off_in, fd_out, off_out, len, SPLICE_F_MORE);
if (result == -1)
{
int errsv = errno;
if (errsv == EINTR)
goto retry;
else if (errsv == ENOSYS || errsv == EINVAL || errsv == EOPNOTSUPP)
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Splice not supported"));
else
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error splicing file: %s"),
g_strerror (errsv));
return FALSE;
}
*bytes_transferd = result;
return TRUE;
}
static gboolean
splice_stream_with_progress (GInputStream *in,
GOutputStream *out,
GCancellable *cancellable,
GFileProgressCallback progress_callback,
gpointer progress_callback_data,
GError **error)
{
int buffer[2] = { -1, -1 };
int buffer_size;
gboolean res;
goffset total_size;
loff_t offset_in;
loff_t offset_out;
int fd_in, fd_out;
fd_in = g_file_descriptor_based_get_fd (G_FILE_DESCRIPTOR_BASED (in));
fd_out = g_file_descriptor_based_get_fd (G_FILE_DESCRIPTOR_BASED (out));
if (!g_unix_open_pipe (buffer, FD_CLOEXEC, error))
return FALSE;
/* Try a 1MiB buffer for improved throughput. If that fails, use the default
* pipe size. See: https://bugzilla.gnome.org/791457 */
buffer_size = fcntl (buffer[1], F_SETPIPE_SZ, 1024 * 1024);
if (buffer_size <= 0)
{
buffer_size = fcntl (buffer[1], F_GETPIPE_SZ);
if (buffer_size <= 0)
{
/* If #F_GETPIPE_SZ isn’t available, assume we’re on Linux < 2.6.35,
* but ≥ 2.6.11, meaning the pipe capacity is 64KiB. Ignore the
* possibility of running on Linux < 2.6.11 (where the capacity was
* the system page size, typically 4KiB) because it’s ancient.
* See pipe(7). */
buffer_size = 1024 * 64;
}
}
g_assert (buffer_size > 0);
total_size = -1;
/* avoid performance impact of querying total size when it's not needed */
if (progress_callback)
{
struct stat sbuf;
if (fstat (fd_in, &sbuf) == 0)
total_size = sbuf.st_size;
}
if (total_size == -1)
total_size = 0;
offset_in = offset_out = 0;
res = FALSE;
while (TRUE)
{
long n_read;
long n_written;
if (g_cancellable_set_error_if_cancelled (cancellable, error))
break;
if (!do_splice (fd_in, &offset_in, buffer[1], NULL, buffer_size, &n_read, error))
break;
if (n_read == 0)
{
res = TRUE;
break;
}
while (n_read > 0)
{
if (g_cancellable_set_error_if_cancelled (cancellable, error))
goto out;
if (!do_splice (buffer[0], NULL, fd_out, &offset_out, n_read, &n_written, error))
goto out;
n_read -= n_written;
}
if (progress_callback)
progress_callback (offset_in, total_size, progress_callback_data);
}
/* Make sure we send full copied size */
if (progress_callback)
progress_callback (offset_in, total_size, progress_callback_data);
if (!g_close (buffer[0], error))
goto out;
buffer[0] = -1;
if (!g_close (buffer[1], error))
goto out;
buffer[1] = -1;
out:
if (buffer[0] != -1)
(void) g_close (buffer[0], NULL);
if (buffer[1] != -1)
(void) g_close (buffer[1], NULL);
return res;
}
#endif
#ifdef __linux__
static gboolean
btrfs_reflink_with_progress (GInputStream *in,
GOutputStream *out,
GFileInfo *info,
GCancellable *cancellable,
GFileProgressCallback progress_callback,
gpointer progress_callback_data,
GError **error)
{
goffset source_size;
int fd_in, fd_out;
int ret, errsv;
fd_in = g_file_descriptor_based_get_fd (G_FILE_DESCRIPTOR_BASED (in));
fd_out = g_file_descriptor_based_get_fd (G_FILE_DESCRIPTOR_BASED (out));
if (progress_callback)
source_size = g_file_info_get_size (info);
/* Btrfs clone ioctl properties:
* - Works at the inode level
* - Doesn't work with directories
* - Always follows symlinks (source and destination)
*
* By the time we get here, *in and *out are both regular files */
ret = ioctl (fd_out, BTRFS_IOC_CLONE, fd_in);
errsv = errno;
if (ret < 0)
{
if (errsv == EXDEV)
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Copy (reflink/clone) between mounts is not supported"));
else if (errsv == EINVAL)
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Copy (reflink/clone) is not supported or invalid"));
else
/* Most probably something odd happened; retry with fallback */
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Copy (reflink/clone) is not supported or didn’t work"));
/* We retry with fallback for all error cases because Btrfs is currently
* unstable, and so we can't trust it to do clone properly.
* In addition, any hard errors here would cause the same failure in the
* fallback manual copy as well. */
return FALSE;
}
/* Make sure we send full copied size */
if (progress_callback)
progress_callback (source_size, source_size, progress_callback_data);
return TRUE;
}
#endif
static gboolean
file_copy_fallback (GFile *source,
GFile *destination,
GFileCopyFlags flags,
GCancellable *cancellable,
GFileProgressCallback progress_callback,
gpointer progress_callback_data,
GError **error)
{
gboolean ret = FALSE;
GFileInputStream *file_in = NULL;
GInputStream *in = NULL;
GOutputStream *out = NULL;
GFileInfo *info = NULL;
const char *target;
char *attrs_to_read;
gboolean do_set_attributes = FALSE;
GFileCreateFlags create_flags;
GError *tmp_error = NULL;
/* need to know the file type */
info = g_file_query_info (source,
G_FILE_ATTRIBUTE_STANDARD_TYPE "," G_FILE_ATTRIBUTE_STANDARD_SYMLINK_TARGET,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable,
error);
if (!info)
goto out;
/* Maybe copy the symlink? */
if ((flags & G_FILE_COPY_NOFOLLOW_SYMLINKS) &&
g_file_info_get_file_type (info) == G_FILE_TYPE_SYMBOLIC_LINK)
{
target = g_file_info_get_symlink_target (info);
if (target)
{
if (!copy_symlink (destination, flags, cancellable, target, error))
goto out;
ret = TRUE;
goto out;
}
/* ... else fall back on a regular file copy */
}
/* Handle "special" files (pipes, device nodes, ...)? */
else if (g_file_info_get_file_type (info) == G_FILE_TYPE_SPECIAL)
{
/* FIXME: could try to recreate device nodes and others? */
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Can’t copy special file"));
goto out;
}
/* Everything else should just fall back on a regular copy. */
file_in = open_source_for_copy (source, destination, flags, cancellable, error);
if (!file_in)
goto out;
in = G_INPUT_STREAM (file_in);
attrs_to_read = g_file_build_attribute_list_for_copy (destination, flags,
cancellable, error);
if (!attrs_to_read)
goto out;
/* Ok, ditch the previous lightweight info (on Unix we just
* called lstat()); at this point we gather all the information
* we need about the source from the opened file descriptor.
*/
g_object_unref (info);
info = g_file_input_stream_query_info (file_in, attrs_to_read,
cancellable, &tmp_error);
if (!info)
{
/* Not all gvfs backends implement query_info_on_read(), we
* can just fall back to the pathname again.
* https://bugzilla.gnome.org/706254
*/
if (g_error_matches (tmp_error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED))
{
g_clear_error (&tmp_error);
info = g_file_query_info (source, attrs_to_read, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable, error);
}
else
{
g_free (attrs_to_read);
g_propagate_error (error, tmp_error);
goto out;
}
}
g_free (attrs_to_read);
if (!info)
goto out;
do_set_attributes = TRUE;
/* In the local file path, we pass down the source info which
* includes things like unix::mode, to ensure that the target file
* is not created with different permissions from the source file.
*
* If a future API like g_file_replace_with_info() is added, switch
* this code to use that.
*
* Use %G_FILE_CREATE_PRIVATE unless
* - we were told to create the file with default permissions (i.e. the
* process’ umask),
* - or if the source file is on a file system which doesn’t support
* `unix::mode` (in which case it probably also makes sense to create the
* destination with default permissions because the source cannot be
* private),
* - or if the destination file is a `GLocalFile`, in which case we can
* directly open() it with the permissions from the source file.
*/
create_flags = G_FILE_CREATE_NONE;
if (!(flags & G_FILE_COPY_TARGET_DEFAULT_PERMS) &&
g_file_info_has_attribute (info, G_FILE_ATTRIBUTE_UNIX_MODE) &&
!G_IS_LOCAL_FILE (destination))
create_flags |= G_FILE_CREATE_PRIVATE;
if (flags & G_FILE_COPY_OVERWRITE)
create_flags |= G_FILE_CREATE_REPLACE_DESTINATION;
if (G_IS_LOCAL_FILE (destination))
{
if (flags & G_FILE_COPY_OVERWRITE)
out = (GOutputStream*)_g_local_file_output_stream_replace (_g_local_file_get_filename (G_LOCAL_FILE (destination)),
FALSE, NULL,
flags & G_FILE_COPY_BACKUP,
create_flags,
(flags & G_FILE_COPY_TARGET_DEFAULT_PERMS) ? NULL : info,
cancellable, error);
else
out = (GOutputStream*)_g_local_file_output_stream_create (_g_local_file_get_filename (G_LOCAL_FILE (destination)),
FALSE, create_flags,
(flags & G_FILE_COPY_TARGET_DEFAULT_PERMS) ? NULL : info,
cancellable, error);
}
else if (flags & G_FILE_COPY_OVERWRITE)
{
out = (GOutputStream *)g_file_replace (destination,
NULL,
flags & G_FILE_COPY_BACKUP,
create_flags,
cancellable, error);
}
else
{
out = (GOutputStream *)g_file_create (destination, create_flags, cancellable, error);
}
if (!out)
goto out;
#ifdef __linux__
if (G_IS_FILE_DESCRIPTOR_BASED (in) && G_IS_FILE_DESCRIPTOR_BASED (out))
{
GError *reflink_err = NULL;
if (!btrfs_reflink_with_progress (in, out, info, cancellable,
progress_callback, progress_callback_data,
&reflink_err))
{
if (g_error_matches (reflink_err, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED))
{
g_clear_error (&reflink_err);
}
else
{
g_propagate_error (error, reflink_err);
goto out;
}
}
else
{
ret = TRUE;
goto out;
}
}
#endif
#ifdef HAVE_SPLICE
if (G_IS_FILE_DESCRIPTOR_BASED (in) && G_IS_FILE_DESCRIPTOR_BASED (out))
{
GError *splice_err = NULL;
if (!splice_stream_with_progress (in, out, cancellable,
progress_callback, progress_callback_data,
&splice_err))
{
if (g_error_matches (splice_err, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED))
{
g_clear_error (&splice_err);
}
else
{
g_propagate_error (error, splice_err);
goto out;
}
}
else
{
ret = TRUE;
goto out;
}
}
#endif
/* A plain read/write loop */
if (!copy_stream_with_progress (in, out, source, cancellable,
progress_callback, progress_callback_data,
error))
goto out;
ret = TRUE;
out:
if (in)
{
/* Don't care about errors in source here */
(void) g_input_stream_close (in, cancellable, NULL);
g_object_unref (in);
}
if (out)
{
/* But write errors on close are bad! */
if (!g_output_stream_close (out, cancellable, ret ? error : NULL))
ret = FALSE;
g_object_unref (out);
}
/* Ignore errors here. Failure to copy metadata is not a hard error */
/* TODO: set these attributes /before/ we do the rename() on Unix */
if (ret && do_set_attributes)
{
g_file_set_attributes_from_info (destination,
info,
G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS,
cancellable,
NULL);
}
g_clear_object (&info);
return ret;
}
/**
* g_file_copy:
* @source: input #GFile
* @destination: destination #GFile
* @flags: set of #GFileCopyFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @progress_callback: (nullable) (scope call): function to callback with
* progress information, or %NULL if progress information is not needed
* @progress_callback_data: (closure): user data to pass to @progress_callback
* @error: #GError to set on error, or %NULL
*
* Copies the file @source to the location specified by @destination.
* Can not handle recursive copies of directories.
*
* If the flag #G_FILE_COPY_OVERWRITE is specified an already
* existing @destination file is overwritten.
*
* If the flag #G_FILE_COPY_NOFOLLOW_SYMLINKS is specified then symlinks
* will be copied as symlinks, otherwise the target of the
* @source symlink will be copied.
*
* If the flag #G_FILE_COPY_ALL_METADATA is specified then all the metadata
* that is possible to copy is copied, not just the default subset (which,
* for instance, does not include the owner, see #GFileInfo).
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* If @progress_callback is not %NULL, then the operation can be monitored
* by setting this to a #GFileProgressCallback function.
* @progress_callback_data will be passed to this function. It is guaranteed
* that this callback will be called after all data has been transferred with
* the total number of bytes copied during the operation.
*
* If the @source file does not exist, then the %G_IO_ERROR_NOT_FOUND error
* is returned, independent on the status of the @destination.
*
* If #G_FILE_COPY_OVERWRITE is not specified and the target exists, then
* the error %G_IO_ERROR_EXISTS is returned.
*
* If trying to overwrite a file over a directory, the %G_IO_ERROR_IS_DIRECTORY
* error is returned. If trying to overwrite a directory with a directory the
* %G_IO_ERROR_WOULD_MERGE error is returned.
*
* If the source is a directory and the target does not exist, or
* #G_FILE_COPY_OVERWRITE is specified and the target is a file, then the
* %G_IO_ERROR_WOULD_RECURSE error is returned.
*
* If you are interested in copying the #GFile object itself (not the on-disk
* file), see g_file_dup().
*
* Returns: %TRUE on success, %FALSE otherwise.
*/
gboolean
g_file_copy (GFile *source,
GFile *destination,
GFileCopyFlags flags,
GCancellable *cancellable,
GFileProgressCallback progress_callback,
gpointer progress_callback_data,
GError **error)
{
GFileIface *iface;
GError *my_error;
gboolean res;
g_return_val_if_fail (G_IS_FILE (source), FALSE);
g_return_val_if_fail (G_IS_FILE (destination), FALSE);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return FALSE;
iface = G_FILE_GET_IFACE (destination);
if (iface->copy)
{
my_error = NULL;
res = (* iface->copy) (source, destination,
flags, cancellable,
progress_callback, progress_callback_data,
&my_error);
if (res)
return TRUE;
if (my_error->domain != G_IO_ERROR || my_error->code != G_IO_ERROR_NOT_SUPPORTED)
{
g_propagate_error (error, my_error);
return FALSE;
}
else
g_clear_error (&my_error);
}
/* If the types are different, and the destination method failed
* also try the source method
*/
if (G_OBJECT_TYPE (source) != G_OBJECT_TYPE (destination))
{
iface = G_FILE_GET_IFACE (source);
if (iface->copy)
{
my_error = NULL;
res = (* iface->copy) (source, destination,
flags, cancellable,
progress_callback, progress_callback_data,
&my_error);
if (res)
return TRUE;
if (my_error->domain != G_IO_ERROR || my_error->code != G_IO_ERROR_NOT_SUPPORTED)
{
g_propagate_error (error, my_error);
return FALSE;
}
else
g_clear_error (&my_error);
}
}
return file_copy_fallback (source, destination, flags, cancellable,
progress_callback, progress_callback_data,
error);
}
/**
* g_file_copy_async:
* @source: input #GFile
* @destination: destination #GFile
* @flags: set of #GFileCopyFlags
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @progress_callback: (nullable) (scope notified): function to callback with progress
* information, or %NULL if progress information is not needed
* @progress_callback_data: (closure progress_callback) (nullable): user data to pass to @progress_callback
* @callback: (scope async): a #GAsyncReadyCallback to call when the request is satisfied
* @user_data: (closure callback): the data to pass to callback function
*
* Copies the file @source to the location specified by @destination
* asynchronously. For details of the behaviour, see g_file_copy().
*
* If @progress_callback is not %NULL, then that function that will be called
* just like in g_file_copy(). The callback will run in the default main context
* of the thread calling g_file_copy_async() — the same context as @callback is
* run in.
*
* When the operation is finished, @callback will be called. You can then call
* g_file_copy_finish() to get the result of the operation.
*/
void
g_file_copy_async (GFile *source,
GFile *destination,
GFileCopyFlags flags,
int io_priority,
GCancellable *cancellable,
GFileProgressCallback progress_callback,
gpointer progress_callback_data,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (source));
g_return_if_fail (G_IS_FILE (destination));
iface = G_FILE_GET_IFACE (source);
(* iface->copy_async) (source,
destination,
flags,
io_priority,
cancellable,
progress_callback,
progress_callback_data,
callback,
user_data);
}
/**
* g_file_copy_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes copying the file started with g_file_copy_async().
*
* Returns: a %TRUE on success, %FALSE on error.
*/
gboolean
g_file_copy_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), FALSE);
if (g_async_result_legacy_propagate_error (res, error))
return FALSE;
iface = G_FILE_GET_IFACE (file);
return (* iface->copy_finish) (file, res, error);
}
/**
* g_file_move:
* @source: #GFile pointing to the source location
* @destination: #GFile pointing to the destination location
* @flags: set of #GFileCopyFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @progress_callback: (nullable) (scope call): #GFileProgressCallback
* function for updates
* @progress_callback_data: (closure): gpointer to user data for
* the callback function
* @error: #GError for returning error conditions, or %NULL
*
* Tries to move the file or directory @source to the location specified
* by @destination. If native move operations are supported then this is
* used, otherwise a copy + delete fallback is used. The native
* implementation may support moving directories (for instance on moves
* inside the same filesystem), but the fallback code does not.
*
* If the flag #G_FILE_COPY_OVERWRITE is specified an already
* existing @destination file is overwritten.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* If @progress_callback is not %NULL, then the operation can be monitored
* by setting this to a #GFileProgressCallback function.
* @progress_callback_data will be passed to this function. It is
* guaranteed that this callback will be called after all data has been
* transferred with the total number of bytes copied during the operation.
*
* If the @source file does not exist, then the %G_IO_ERROR_NOT_FOUND
* error is returned, independent on the status of the @destination.
*
* If #G_FILE_COPY_OVERWRITE is not specified and the target exists,
* then the error %G_IO_ERROR_EXISTS is returned.
*
* If trying to overwrite a file over a directory, the %G_IO_ERROR_IS_DIRECTORY
* error is returned. If trying to overwrite a directory with a directory the
* %G_IO_ERROR_WOULD_MERGE error is returned.
*
* If the source is a directory and the target does not exist, or
* #G_FILE_COPY_OVERWRITE is specified and the target is a file, then
* the %G_IO_ERROR_WOULD_RECURSE error may be returned (if the native
* move operation isn't available).
*
* Returns: %TRUE on successful move, %FALSE otherwise.
*/
gboolean
g_file_move (GFile *source,
GFile *destination,
GFileCopyFlags flags,
GCancellable *cancellable,
GFileProgressCallback progress_callback,
gpointer progress_callback_data,
GError **error)
{
GFileIface *iface;
GError *my_error;
gboolean res;
g_return_val_if_fail (G_IS_FILE (source), FALSE);
g_return_val_if_fail (G_IS_FILE (destination), FALSE);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return FALSE;
iface = G_FILE_GET_IFACE (destination);
if (iface->move)
{
my_error = NULL;
res = (* iface->move) (source, destination,
flags, cancellable,
progress_callback, progress_callback_data,
&my_error);
if (res)
return TRUE;
if (my_error->domain != G_IO_ERROR || my_error->code != G_IO_ERROR_NOT_SUPPORTED)
{
g_propagate_error (error, my_error);
return FALSE;
}
else
g_clear_error (&my_error);
}
/* If the types are different, and the destination method failed
* also try the source method
*/
if (G_OBJECT_TYPE (source) != G_OBJECT_TYPE (destination))
{
iface = G_FILE_GET_IFACE (source);
if (iface->move)
{
my_error = NULL;
res = (* iface->move) (source, destination,
flags, cancellable,
progress_callback, progress_callback_data,
&my_error);
if (res)
return TRUE;
if (my_error->domain != G_IO_ERROR || my_error->code != G_IO_ERROR_NOT_SUPPORTED)
{
g_propagate_error (error, my_error);
return FALSE;
}
else
g_clear_error (&my_error);
}
}
if (flags & G_FILE_COPY_NO_FALLBACK_FOR_MOVE)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return FALSE;
}
flags |= G_FILE_COPY_ALL_METADATA | G_FILE_COPY_NOFOLLOW_SYMLINKS;
if (!g_file_copy (source, destination, flags, cancellable,
progress_callback, progress_callback_data,
error))
return FALSE;
return g_file_delete (source, cancellable, error);
}
/**
* g_file_make_directory:
* @file: input #GFile
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Creates a directory. Note that this will only create a child directory
* of the immediate parent directory of the path or URI given by the #GFile.
* To recursively create directories, see g_file_make_directory_with_parents().
* This function will fail if the parent directory does not exist, setting
* @error to %G_IO_ERROR_NOT_FOUND. If the file system doesn't support
* creating directories, this function will fail, setting @error to
* %G_IO_ERROR_NOT_SUPPORTED.
*
* For a local #GFile the newly created directory will have the default
* (current) ownership and permissions of the current process.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: %TRUE on successful creation, %FALSE otherwise.
*/
gboolean
g_file_make_directory (GFile *file,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return FALSE;
iface = G_FILE_GET_IFACE (file);
if (iface->make_directory == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return FALSE;
}
return (* iface->make_directory) (file, cancellable, error);
}
/**
* g_file_make_directory_async:
* @file: input #GFile
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: the data to pass to callback function
*
* Asynchronously creates a directory.
*
* Virtual: make_directory_async
* Since: 2.38
*/
void
g_file_make_directory_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->make_directory_async) (file,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_make_directory_finish:
* @file: input #GFile
* @result: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes an asynchronous directory creation, started with
* g_file_make_directory_async().
*
* Virtual: make_directory_finish
* Returns: %TRUE on successful directory creation, %FALSE otherwise.
* Since: 2.38
*/
gboolean
g_file_make_directory_finish (GFile *file,
GAsyncResult *result,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
iface = G_FILE_GET_IFACE (file);
return (* iface->make_directory_finish) (file, result, error);
}
/**
* g_file_make_directory_with_parents:
* @file: input #GFile
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Creates a directory and any parent directories that may not
* exist similar to 'mkdir -p'. If the file system does not support
* creating directories, this function will fail, setting @error to
* %G_IO_ERROR_NOT_SUPPORTED. If the directory itself already exists,
* this function will fail setting @error to %G_IO_ERROR_EXISTS, unlike
* the similar g_mkdir_with_parents().
*
* For a local #GFile the newly created directories will have the default
* (current) ownership and permissions of the current process.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: %TRUE if all directories have been successfully created, %FALSE
* otherwise.
*
* Since: 2.18
*/
gboolean
g_file_make_directory_with_parents (GFile *file,
GCancellable *cancellable,
GError **error)
{
GFile *work_file = NULL;
GList *list = NULL, *l;
GError *my_error = NULL;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return FALSE;
/* Try for the simple case of not having to create any parent
* directories. If any parent directory needs to be created, this
* call will fail with NOT_FOUND. If that happens, then that value of
* my_error persists into the while loop below.
*/
g_file_make_directory (file, cancellable, &my_error);
if (!g_error_matches (my_error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
{
if (my_error)
g_propagate_error (error, my_error);
return my_error == NULL;
}
work_file = g_object_ref (file);
/* Creates the parent directories as needed. In case any particular
* creation operation fails for lack of other parent directories
* (NOT_FOUND), the directory is added to a list of directories to
* create later, and the value of my_error is retained until the next
* iteration of the loop. After the loop my_error should either be
* empty or contain a real failure condition.
*/
while (g_error_matches (my_error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
{
GFile *parent_file;
parent_file = g_file_get_parent (work_file);
if (parent_file == NULL)
break;
g_clear_error (&my_error);
g_file_make_directory (parent_file, cancellable, &my_error);
/* Another process may have created the directory in between the
* G_IO_ERROR_NOT_FOUND and now
*/
if (g_error_matches (my_error, G_IO_ERROR, G_IO_ERROR_EXISTS))
g_clear_error (&my_error);
g_object_unref (work_file);
work_file = g_object_ref (parent_file);
if (g_error_matches (my_error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
list = g_list_prepend (list, parent_file); /* Transfer ownership of ref */
else
g_object_unref (parent_file);
}
/* All directories should be able to be created now, so an error at
* this point means the whole operation must fail -- except an EXISTS
* error, which means that another process already created the
* directory in between the previous failure and now.
*/
for (l = list; my_error == NULL && l; l = l->next)
{
g_file_make_directory ((GFile *) l->data, cancellable, &my_error);
if (g_error_matches (my_error, G_IO_ERROR, G_IO_ERROR_EXISTS))
g_clear_error (&my_error);
}
if (work_file)
g_object_unref (work_file);
/* Clean up */
while (list != NULL)
{
g_object_unref ((GFile *) list->data);
list = g_list_remove (list, list->data);
}
/* At this point an error in my_error means a that something
* unexpected failed in either of the loops above, so the whole
* operation must fail.
*/
if (my_error != NULL)
{
g_propagate_error (error, my_error);
return FALSE;
}
return g_file_make_directory (file, cancellable, error);
}
/**
* g_file_make_symbolic_link:
* @file: a #GFile with the name of the symlink to create
* @symlink_value: (type filename): a string with the path for the target
* of the new symlink
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError
*
* Creates a symbolic link named @file which contains the string
* @symlink_value.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: %TRUE on the creation of a new symlink, %FALSE otherwise.
*/
gboolean
g_file_make_symbolic_link (GFile *file,
const char *symlink_value,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (symlink_value != NULL, FALSE);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return FALSE;
if (*symlink_value == '\0')
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_INVALID_ARGUMENT,
_("Invalid symlink value given"));
return FALSE;
}
iface = G_FILE_GET_IFACE (file);
if (iface->make_symbolic_link == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Symbolic links not supported"));
return FALSE;
}
return (* iface->make_symbolic_link) (file, symlink_value, cancellable, error);
}
/**
* g_file_delete:
* @file: input #GFile
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Deletes a file. If the @file is a directory, it will only be
* deleted if it is empty. This has the same semantics as g_unlink().
*
* If @file doesn’t exist, %G_IO_ERROR_NOT_FOUND will be returned. This allows
* for deletion to be implemented avoiding
* [time-of-check to time-of-use races](https://en.wikipedia.org/wiki/Time-of-check_to_time-of-use):
* |[
* g_autoptr(GError) local_error = NULL;
* if (!g_file_delete (my_file, my_cancellable, &local_error) &&
* !g_error_matches (local_error, G_IO_ERROR, G_IO_ERROR_NOT_FOUND))
* {
* // deletion failed for some reason other than the file not existing:
* // so report the error
* g_warning ("Failed to delete %s: %s",
* g_file_peek_path (my_file), local_error->message);
* }
* ]|
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Virtual: delete_file
* Returns: %TRUE if the file was deleted. %FALSE otherwise.
*/
gboolean
g_file_delete (GFile *file,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return FALSE;
iface = G_FILE_GET_IFACE (file);
if (iface->delete_file == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return FALSE;
}
return (* iface->delete_file) (file, cancellable, error);
}
/**
* g_file_delete_async:
* @file: input #GFile
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: the data to pass to callback function
*
* Asynchronously delete a file. If the @file is a directory, it will
* only be deleted if it is empty. This has the same semantics as
* g_unlink().
*
* Virtual: delete_file_async
* Since: 2.34
*/
void
g_file_delete_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->delete_file_async) (file,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_delete_finish:
* @file: input #GFile
* @result: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes deleting a file started with g_file_delete_async().
*
* Virtual: delete_file_finish
* Returns: %TRUE if the file was deleted. %FALSE otherwise.
* Since: 2.34
**/
gboolean
g_file_delete_finish (GFile *file,
GAsyncResult *result,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
if (g_async_result_legacy_propagate_error (result, error))
return FALSE;
iface = G_FILE_GET_IFACE (file);
return (* iface->delete_file_finish) (file, result, error);
}
/**
* g_file_trash:
* @file: #GFile to send to trash
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Sends @file to the "Trashcan", if possible. This is similar to
* deleting it, but the user can recover it before emptying the trashcan.
* Not all file systems support trashing, so this call can return the
* %G_IO_ERROR_NOT_SUPPORTED error. Since GLib 2.66, the `x-gvfs-notrash` unix
* mount option can be used to disable g_file_trash() support for certain
* mounts, the %G_IO_ERROR_NOT_SUPPORTED error will be returned in that case.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Virtual: trash
* Returns: %TRUE on successful trash, %FALSE otherwise.
*/
gboolean
g_file_trash (GFile *file,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return FALSE;
iface = G_FILE_GET_IFACE (file);
if (iface->trash == NULL)
{
g_set_error_literal (error,
G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Trash not supported"));
return FALSE;
}
return (* iface->trash) (file, cancellable, error);
}
/**
* g_file_trash_async:
* @file: input #GFile
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: the data to pass to callback function
*
* Asynchronously sends @file to the Trash location, if possible.
*
* Virtual: trash_async
* Since: 2.38
*/
void
g_file_trash_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
(* iface->trash_async) (file,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_trash_finish:
* @file: input #GFile
* @result: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes an asynchronous file trashing operation, started with
* g_file_trash_async().
*
* Virtual: trash_finish
* Returns: %TRUE on successful trash, %FALSE otherwise.
* Since: 2.38
*/
gboolean
g_file_trash_finish (GFile *file,
GAsyncResult *result,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
iface = G_FILE_GET_IFACE (file);
return (* iface->trash_finish) (file, result, error);
}
/**
* g_file_set_display_name:
* @file: input #GFile
* @display_name: a string
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Renames @file to the specified display name.
*
* The display name is converted from UTF-8 to the correct encoding
* for the target filesystem if possible and the @file is renamed to this.
*
* If you want to implement a rename operation in the user interface the
* edit name (#G_FILE_ATTRIBUTE_STANDARD_EDIT_NAME) should be used as the
* initial value in the rename widget, and then the result after editing
* should be passed to g_file_set_display_name().
*
* On success the resulting converted filename is returned.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: (transfer full): a #GFile specifying what @file was renamed to,
* or %NULL if there was an error.
* Free the returned object with g_object_unref().
*/
GFile *
g_file_set_display_name (GFile *file,
const gchar *display_name,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (display_name != NULL, NULL);
if (strchr (display_name, G_DIR_SEPARATOR) != NULL)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_INVALID_ARGUMENT,
_("File names cannot contain “%c”"), G_DIR_SEPARATOR);
return NULL;
}
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
return (* iface->set_display_name) (file, display_name, cancellable, error);
}
/**
* g_file_set_display_name_async:
* @file: input #GFile
* @display_name: a string
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously sets the display name for a given #GFile.
*
* For more details, see g_file_set_display_name() which is
* the synchronous version of this call.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_set_display_name_finish() to get
* the result of the operation.
*/
void
g_file_set_display_name_async (GFile *file,
const gchar *display_name,
gint io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
g_return_if_fail (display_name != NULL);
iface = G_FILE_GET_IFACE (file);
(* iface->set_display_name_async) (file,
display_name,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_set_display_name_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes setting a display name started with
* g_file_set_display_name_async().
*
* Returns: (transfer full): a #GFile or %NULL on error.
* Free the returned object with g_object_unref().
*/
GFile *
g_file_set_display_name_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_ASYNC_RESULT (res), NULL);
if (g_async_result_legacy_propagate_error (res, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
return (* iface->set_display_name_finish) (file, res, error);
}
/**
* g_file_query_settable_attributes:
* @file: input #GFile
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Obtain the list of settable attributes for the file.
*
* Returns the type and full attribute name of all the attributes
* that can be set on this file. This doesn't mean setting it will
* always succeed though, you might get an access failure, or some
* specific file may not support a specific attribute.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: a #GFileAttributeInfoList describing the settable attributes.
* When you are done with it, release it with
* g_file_attribute_info_list_unref()
*/
GFileAttributeInfoList *
g_file_query_settable_attributes (GFile *file,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
GError *my_error;
GFileAttributeInfoList *list;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->query_settable_attributes == NULL)
return g_file_attribute_info_list_new ();
my_error = NULL;
list = (* iface->query_settable_attributes) (file, cancellable, &my_error);
if (list == NULL)
{
if (my_error->domain == G_IO_ERROR && my_error->code == G_IO_ERROR_NOT_SUPPORTED)
{
list = g_file_attribute_info_list_new ();
g_error_free (my_error);
}
else
g_propagate_error (error, my_error);
}
return list;
}
/**
* g_file_query_writable_namespaces:
* @file: input #GFile
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Obtain the list of attribute namespaces where new attributes
* can be created by a user. An example of this is extended
* attributes (in the "xattr" namespace).
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: a #GFileAttributeInfoList describing the writable namespaces.
* When you are done with it, release it with
* g_file_attribute_info_list_unref()
*/
GFileAttributeInfoList *
g_file_query_writable_namespaces (GFile *file,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
GError *my_error;
GFileAttributeInfoList *list;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->query_writable_namespaces == NULL)
return g_file_attribute_info_list_new ();
my_error = NULL;
list = (* iface->query_writable_namespaces) (file, cancellable, &my_error);
if (list == NULL)
{
g_warn_if_reached();
list = g_file_attribute_info_list_new ();
}
if (my_error != NULL)
{
if (my_error->domain == G_IO_ERROR && my_error->code == G_IO_ERROR_NOT_SUPPORTED)
{
g_error_free (my_error);
}
else
g_propagate_error (error, my_error);
}
return list;
}
/**
* g_file_set_attribute:
* @file: input #GFile
* @attribute: a string containing the attribute's name
* @type: The type of the attribute
* @value_p: (nullable): a pointer to the value (or the pointer
* itself if the type is a pointer type)
* @flags: a set of #GFileQueryInfoFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Sets an attribute in the file with attribute name @attribute to @value_p.
*
* Some attributes can be unset by setting @type to
* %G_FILE_ATTRIBUTE_TYPE_INVALID and @value_p to %NULL.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: %TRUE if the attribute was set, %FALSE otherwise.
*/
gboolean
g_file_set_attribute (GFile *file,
const gchar *attribute,
GFileAttributeType type,
gpointer value_p,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (attribute != NULL && *attribute != '\0', FALSE);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return FALSE;
iface = G_FILE_GET_IFACE (file);
if (iface->set_attribute == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return FALSE;
}
return (* iface->set_attribute) (file, attribute, type, value_p, flags, cancellable, error);
}
/**
* g_file_set_attributes_from_info:
* @file: input #GFile
* @info: a #GFileInfo
* @flags: #GFileQueryInfoFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Tries to set all attributes in the #GFileInfo on the target
* values, not stopping on the first error.
*
* If there is any error during this operation then @error will
* be set to the first error. Error on particular fields are flagged
* by setting the "status" field in the attribute value to
* %G_FILE_ATTRIBUTE_STATUS_ERROR_SETTING, which means you can
* also detect further errors.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: %FALSE if there was any error, %TRUE otherwise.
*/
gboolean
g_file_set_attributes_from_info (GFile *file,
GFileInfo *info,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_FILE_INFO (info), FALSE);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return FALSE;
g_file_info_clear_status (info);
iface = G_FILE_GET_IFACE (file);
return (* iface->set_attributes_from_info) (file,
info,
flags,
cancellable,
error);
}
static gboolean
g_file_real_set_attributes_from_info (GFile *file,
GFileInfo *info,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
char **attributes;
int i;
gboolean res;
GFileAttributeValue *value;
res = TRUE;
attributes = g_file_info_list_attributes (info, NULL);
for (i = 0; attributes[i] != NULL; i++)
{
value = _g_file_info_get_attribute_value (info, attributes[i]);
if (value->status != G_FILE_ATTRIBUTE_STATUS_UNSET)
continue;
if (!g_file_set_attribute (file, attributes[i],
value->type, _g_file_attribute_value_peek_as_pointer (value),
flags, cancellable, error))
{
value->status = G_FILE_ATTRIBUTE_STATUS_ERROR_SETTING;
res = FALSE;
/* Don't set error multiple times */
error = NULL;
}
else
value->status = G_FILE_ATTRIBUTE_STATUS_SET;
}
g_strfreev (attributes);
return res;
}
/**
* g_file_set_attributes_async:
* @file: input #GFile
* @info: a #GFileInfo
* @flags: a #GFileQueryInfoFlags
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async): a #GAsyncReadyCallback
* @user_data: (closure): a #gpointer
*
* Asynchronously sets the attributes of @file with @info.
*
* For more details, see g_file_set_attributes_from_info(),
* which is the synchronous version of this call.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_set_attributes_finish() to get
* the result of the operation.
*/
void
g_file_set_attributes_async (GFile *file,
GFileInfo *info,
GFileQueryInfoFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
g_return_if_fail (G_IS_FILE_INFO (info));
iface = G_FILE_GET_IFACE (file);
(* iface->set_attributes_async) (file,
info,
flags,
io_priority,
cancellable,
callback,
user_data);
}
/**
* g_file_set_attributes_finish:
* @file: input #GFile
* @result: a #GAsyncResult
* @info: (out) (transfer full): a #GFileInfo
* @error: a #GError, or %NULL
*
* Finishes setting an attribute started in g_file_set_attributes_async().
*
* Returns: %TRUE if the attributes were set correctly, %FALSE otherwise.
*/
gboolean
g_file_set_attributes_finish (GFile *file,
GAsyncResult *result,
GFileInfo **info,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
/* No standard handling of errors here, as we must set info even
* on errors
*/
iface = G_FILE_GET_IFACE (file);
return (* iface->set_attributes_finish) (file, result, info, error);
}
/**
* g_file_set_attribute_string:
* @file: input #GFile
* @attribute: a string containing the attribute's name
* @value: a string containing the attribute's value
* @flags: #GFileQueryInfoFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Sets @attribute of type %G_FILE_ATTRIBUTE_TYPE_STRING to @value.
* If @attribute is of a different type, this operation will fail.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: %TRUE if the @attribute was successfully set, %FALSE otherwise.
*/
gboolean
g_file_set_attribute_string (GFile *file,
const char *attribute,
const char *value,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
return g_file_set_attribute (file, attribute,
G_FILE_ATTRIBUTE_TYPE_STRING, (gpointer)value,
flags, cancellable, error);
}
/**
* g_file_set_attribute_byte_string:
* @file: input #GFile
* @attribute: a string containing the attribute's name
* @value: a string containing the attribute's new value
* @flags: a #GFileQueryInfoFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Sets @attribute of type %G_FILE_ATTRIBUTE_TYPE_BYTE_STRING to @value.
* If @attribute is of a different type, this operation will fail,
* returning %FALSE.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: %TRUE if the @attribute was successfully set to @value
* in the @file, %FALSE otherwise.
*/
gboolean
g_file_set_attribute_byte_string (GFile *file,
const gchar *attribute,
const gchar *value,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
return g_file_set_attribute (file, attribute,
G_FILE_ATTRIBUTE_TYPE_BYTE_STRING, (gpointer)value,
flags, cancellable, error);
}
/**
* g_file_set_attribute_uint32:
* @file: input #GFile
* @attribute: a string containing the attribute's name
* @value: a #guint32 containing the attribute's new value
* @flags: a #GFileQueryInfoFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Sets @attribute of type %G_FILE_ATTRIBUTE_TYPE_UINT32 to @value.
* If @attribute is of a different type, this operation will fail.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: %TRUE if the @attribute was successfully set to @value
* in the @file, %FALSE otherwise.
*/
gboolean
g_file_set_attribute_uint32 (GFile *file,
const gchar *attribute,
guint32 value,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
return g_file_set_attribute (file, attribute,
G_FILE_ATTRIBUTE_TYPE_UINT32, &value,
flags, cancellable, error);
}
/**
* g_file_set_attribute_int32:
* @file: input #GFile
* @attribute: a string containing the attribute's name
* @value: a #gint32 containing the attribute's new value
* @flags: a #GFileQueryInfoFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Sets @attribute of type %G_FILE_ATTRIBUTE_TYPE_INT32 to @value.
* If @attribute is of a different type, this operation will fail.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: %TRUE if the @attribute was successfully set to @value
* in the @file, %FALSE otherwise.
*/
gboolean
g_file_set_attribute_int32 (GFile *file,
const gchar *attribute,
gint32 value,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
return g_file_set_attribute (file, attribute,
G_FILE_ATTRIBUTE_TYPE_INT32, &value,
flags, cancellable, error);
}
/**
* g_file_set_attribute_uint64:
* @file: input #GFile
* @attribute: a string containing the attribute's name
* @value: a #guint64 containing the attribute's new value
* @flags: a #GFileQueryInfoFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Sets @attribute of type %G_FILE_ATTRIBUTE_TYPE_UINT64 to @value.
* If @attribute is of a different type, this operation will fail.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: %TRUE if the @attribute was successfully set to @value
* in the @file, %FALSE otherwise.
*/
gboolean
g_file_set_attribute_uint64 (GFile *file,
const gchar *attribute,
guint64 value,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
return g_file_set_attribute (file, attribute,
G_FILE_ATTRIBUTE_TYPE_UINT64, &value,
flags, cancellable, error);
}
/**
* g_file_set_attribute_int64:
* @file: input #GFile
* @attribute: a string containing the attribute's name
* @value: a #guint64 containing the attribute's new value
* @flags: a #GFileQueryInfoFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Sets @attribute of type %G_FILE_ATTRIBUTE_TYPE_INT64 to @value.
* If @attribute is of a different type, this operation will fail.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: %TRUE if the @attribute was successfully set, %FALSE otherwise.
*/
gboolean
g_file_set_attribute_int64 (GFile *file,
const gchar *attribute,
gint64 value,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
return g_file_set_attribute (file, attribute,
G_FILE_ATTRIBUTE_TYPE_INT64, &value,
flags, cancellable, error);
}
/**
* g_file_mount_mountable:
* @file: input #GFile
* @flags: flags affecting the operation
* @mount_operation: (nullable): a #GMountOperation,
* or %NULL to avoid user interaction
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async) (nullable): a #GAsyncReadyCallback to call
* when the request is satisfied, or %NULL
* @user_data: (closure): the data to pass to callback function
*
* Mounts a file of type G_FILE_TYPE_MOUNTABLE.
* Using @mount_operation, you can request callbacks when, for instance,
* passwords are needed during authentication.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_mount_mountable_finish() to get
* the result of the operation.
*/
void
g_file_mount_mountable (GFile *file,
GMountMountFlags flags,
GMountOperation *mount_operation,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
if (iface->mount_mountable == NULL)
{
g_task_report_new_error (file, callback, user_data,
g_file_mount_mountable,
G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return;
}
(* iface->mount_mountable) (file,
flags,
mount_operation,
cancellable,
callback,
user_data);
}
/**
* g_file_mount_mountable_finish:
* @file: input #GFile
* @result: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes a mount operation. See g_file_mount_mountable() for details.
*
* Finish an asynchronous mount operation that was started
* with g_file_mount_mountable().
*
* Returns: (transfer full): a #GFile or %NULL on error.
* Free the returned object with g_object_unref().
*/
GFile *
g_file_mount_mountable_finish (GFile *file,
GAsyncResult *result,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), NULL);
if (g_async_result_legacy_propagate_error (result, error))
return NULL;
else if (g_async_result_is_tagged (result, g_file_mount_mountable))
return g_task_propagate_pointer (G_TASK (result), error);
iface = G_FILE_GET_IFACE (file);
return (* iface->mount_mountable_finish) (file, result, error);
}
/**
* g_file_unmount_mountable:
* @file: input #GFile
* @flags: flags affecting the operation
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async) (nullable): a #GAsyncReadyCallback to call
* when the request is satisfied, or %NULL
* @user_data: (closure): the data to pass to callback function
*
* Unmounts a file of type G_FILE_TYPE_MOUNTABLE.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_unmount_mountable_finish() to get
* the result of the operation.
*
* Deprecated: 2.22: Use g_file_unmount_mountable_with_operation() instead.
*/
void
g_file_unmount_mountable (GFile *file,
GMountUnmountFlags flags,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
if (iface->unmount_mountable == NULL)
{
g_task_report_new_error (file, callback, user_data,
g_file_unmount_mountable_with_operation,
G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return;
}
(* iface->unmount_mountable) (file,
flags,
cancellable,
callback,
user_data);
}
/**
* g_file_unmount_mountable_finish:
* @file: input #GFile
* @result: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes an unmount operation, see g_file_unmount_mountable() for details.
*
* Finish an asynchronous unmount operation that was started
* with g_file_unmount_mountable().
*
* Returns: %TRUE if the operation finished successfully.
* %FALSE otherwise.
*
* Deprecated: 2.22: Use g_file_unmount_mountable_with_operation_finish()
* instead.
*/
gboolean
g_file_unmount_mountable_finish (GFile *file,
GAsyncResult *result,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
if (g_async_result_legacy_propagate_error (result, error))
return FALSE;
else if (g_async_result_is_tagged (result, g_file_unmount_mountable_with_operation))
return g_task_propagate_boolean (G_TASK (result), error);
iface = G_FILE_GET_IFACE (file);
return (* iface->unmount_mountable_finish) (file, result, error);
}
/**
* g_file_unmount_mountable_with_operation:
* @file: input #GFile
* @flags: flags affecting the operation
* @mount_operation: (nullable): a #GMountOperation,
* or %NULL to avoid user interaction
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async) (nullable): a #GAsyncReadyCallback to call
* when the request is satisfied, or %NULL
* @user_data: (closure): the data to pass to callback function
*
* Unmounts a file of type #G_FILE_TYPE_MOUNTABLE.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_unmount_mountable_finish() to get
* the result of the operation.
*
* Since: 2.22
*/
void
g_file_unmount_mountable_with_operation (GFile *file,
GMountUnmountFlags flags,
GMountOperation *mount_operation,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
if (iface->unmount_mountable == NULL && iface->unmount_mountable_with_operation == NULL)
{
g_task_report_new_error (file, callback, user_data,
g_file_unmount_mountable_with_operation,
G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return;
}
if (iface->unmount_mountable_with_operation != NULL)
(* iface->unmount_mountable_with_operation) (file,
flags,
mount_operation,
cancellable,
callback,
user_data);
else
(* iface->unmount_mountable) (file,
flags,
cancellable,
callback,
user_data);
}
/**
* g_file_unmount_mountable_with_operation_finish:
* @file: input #GFile
* @result: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes an unmount operation,
* see g_file_unmount_mountable_with_operation() for details.
*
* Finish an asynchronous unmount operation that was started
* with g_file_unmount_mountable_with_operation().
*
* Returns: %TRUE if the operation finished successfully.
* %FALSE otherwise.
*
* Since: 2.22
*/
gboolean
g_file_unmount_mountable_with_operation_finish (GFile *file,
GAsyncResult *result,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
if (g_async_result_legacy_propagate_error (result, error))
return FALSE;
else if (g_async_result_is_tagged (result, g_file_unmount_mountable_with_operation))
return g_task_propagate_boolean (G_TASK (result), error);
iface = G_FILE_GET_IFACE (file);
if (iface->unmount_mountable_with_operation_finish != NULL)
return (* iface->unmount_mountable_with_operation_finish) (file, result, error);
else
return (* iface->unmount_mountable_finish) (file, result, error);
}
/**
* g_file_eject_mountable:
* @file: input #GFile
* @flags: flags affecting the operation
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async) (nullable): a #GAsyncReadyCallback to call
* when the request is satisfied, or %NULL
* @user_data: (closure): the data to pass to callback function
*
* Starts an asynchronous eject on a mountable.
* When this operation has completed, @callback will be called with
* @user_user data, and the operation can be finalized with
* g_file_eject_mountable_finish().
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Deprecated: 2.22: Use g_file_eject_mountable_with_operation() instead.
*/
void
g_file_eject_mountable (GFile *file,
GMountUnmountFlags flags,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
if (iface->eject_mountable == NULL)
{
g_task_report_new_error (file, callback, user_data,
g_file_eject_mountable_with_operation,
G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return;
}
(* iface->eject_mountable) (file,
flags,
cancellable,
callback,
user_data);
}
/**
* g_file_eject_mountable_finish:
* @file: input #GFile
* @result: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes an asynchronous eject operation started by
* g_file_eject_mountable().
*
* Returns: %TRUE if the @file was ejected successfully.
* %FALSE otherwise.
*
* Deprecated: 2.22: Use g_file_eject_mountable_with_operation_finish()
* instead.
*/
gboolean
g_file_eject_mountable_finish (GFile *file,
GAsyncResult *result,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
if (g_async_result_legacy_propagate_error (result, error))
return FALSE;
else if (g_async_result_is_tagged (result, g_file_eject_mountable_with_operation))
return g_task_propagate_boolean (G_TASK (result), error);
iface = G_FILE_GET_IFACE (file);
return (* iface->eject_mountable_finish) (file, result, error);
}
/**
* g_file_eject_mountable_with_operation:
* @file: input #GFile
* @flags: flags affecting the operation
* @mount_operation: (nullable): a #GMountOperation,
* or %NULL to avoid user interaction
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (scope async) (nullable): a #GAsyncReadyCallback to call
* when the request is satisfied, or %NULL
* @user_data: (closure): the data to pass to callback function
*
* Starts an asynchronous eject on a mountable.
* When this operation has completed, @callback will be called with
* @user_user data, and the operation can be finalized with
* g_file_eject_mountable_with_operation_finish().
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Since: 2.22
*/
void
g_file_eject_mountable_with_operation (GFile *file,
GMountUnmountFlags flags,
GMountOperation *mount_operation,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
if (iface->eject_mountable == NULL && iface->eject_mountable_with_operation == NULL)
{
g_task_report_new_error (file, callback, user_data,
g_file_eject_mountable_with_operation,
G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return;
}
if (iface->eject_mountable_with_operation != NULL)
(* iface->eject_mountable_with_operation) (file,
flags,
mount_operation,
cancellable,
callback,
user_data);
else
(* iface->eject_mountable) (file,
flags,
cancellable,
callback,
user_data);
}
/**
* g_file_eject_mountable_with_operation_finish:
* @file: input #GFile
* @result: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes an asynchronous eject operation started by
* g_file_eject_mountable_with_operation().
*
* Returns: %TRUE if the @file was ejected successfully.
* %FALSE otherwise.
*
* Since: 2.22
*/
gboolean
g_file_eject_mountable_with_operation_finish (GFile *file,
GAsyncResult *result,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
if (g_async_result_legacy_propagate_error (result, error))
return FALSE;
else if (g_async_result_is_tagged (result, g_file_eject_mountable_with_operation))
return g_task_propagate_boolean (G_TASK (result), error);
iface = G_FILE_GET_IFACE (file);
if (iface->eject_mountable_with_operation_finish != NULL)
return (* iface->eject_mountable_with_operation_finish) (file, result, error);
else
return (* iface->eject_mountable_finish) (file, result, error);
}
/**
* g_file_monitor_directory:
* @file: input #GFile
* @flags: a set of #GFileMonitorFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Obtains a directory monitor for the given file.
* This may fail if directory monitoring is not supported.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* It does not make sense for @flags to contain
* %G_FILE_MONITOR_WATCH_HARD_LINKS, since hard links can not be made to
* directories. It is not possible to monitor all the files in a
* directory for changes made via hard links; if you want to do this then
* you must register individual watches with g_file_monitor().
*
* Virtual: monitor_dir
* Returns: (transfer full): a #GFileMonitor for the given @file,
* or %NULL on error.
* Free the returned object with g_object_unref().
*/
GFileMonitor *
g_file_monitor_directory (GFile *file,
GFileMonitorFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (~flags & G_FILE_MONITOR_WATCH_HARD_LINKS, NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
if (iface->monitor_dir == NULL)
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return NULL;
}
return (* iface->monitor_dir) (file, flags, cancellable, error);
}
/**
* g_file_monitor_file:
* @file: input #GFile
* @flags: a set of #GFileMonitorFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Obtains a file monitor for the given file. If no file notification
* mechanism exists, then regular polling of the file is used.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* If @flags contains %G_FILE_MONITOR_WATCH_HARD_LINKS then the monitor
* will also attempt to report changes made to the file via another
* filename (ie, a hard link). Without this flag, you can only rely on
* changes made through the filename contained in @file to be
* reported. Using this flag may result in an increase in resource
* usage, and may not have any effect depending on the #GFileMonitor
* backend and/or filesystem type.
*
* Returns: (transfer full): a #GFileMonitor for the given @file,
* or %NULL on error.
* Free the returned object with g_object_unref().
*/
GFileMonitor *
g_file_monitor_file (GFile *file,
GFileMonitorFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileIface *iface;
GFileMonitor *monitor;
g_return_val_if_fail (G_IS_FILE (file), NULL);
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return NULL;
iface = G_FILE_GET_IFACE (file);
monitor = NULL;
if (iface->monitor_file)
monitor = (* iface->monitor_file) (file, flags, cancellable, NULL);
/* Fallback to polling */
if (monitor == NULL)
monitor = _g_poll_file_monitor_new (file);
return monitor;
}
/**
* g_file_monitor:
* @file: input #GFile
* @flags: a set of #GFileMonitorFlags
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @error: a #GError, or %NULL
*
* Obtains a file or directory monitor for the given file,
* depending on the type of the file.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: (transfer full): a #GFileMonitor for the given @file,
* or %NULL on error.
* Free the returned object with g_object_unref().
*
* Since: 2.18
*/
GFileMonitor *
g_file_monitor (GFile *file,
GFileMonitorFlags flags,
GCancellable *cancellable,
GError **error)
{
if (g_file_query_file_type (file, 0, cancellable) == G_FILE_TYPE_DIRECTORY)
return g_file_monitor_directory (file,
flags & ~G_FILE_MONITOR_WATCH_HARD_LINKS,
cancellable, error);
else
return g_file_monitor_file (file, flags, cancellable, error);
}
/********************************************
* Default implementation of async ops *
********************************************/
typedef struct {
char *attributes;
GFileQueryInfoFlags flags;
} QueryInfoAsyncData;
static void
query_info_data_free (QueryInfoAsyncData *data)
{
g_free (data->attributes);
g_free (data);
}
static void
query_info_async_thread (GTask *task,
gpointer object,
gpointer task_data,
GCancellable *cancellable)
{
QueryInfoAsyncData *data = task_data;
GFileInfo *info;
GError *error = NULL;
info = g_file_query_info (G_FILE (object), data->attributes, data->flags, cancellable, &error);
if (info)
g_task_return_pointer (task, info, g_object_unref);
else
g_task_return_error (task, error);
}
static void
g_file_real_query_info_async (GFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
QueryInfoAsyncData *data;
data = g_new0 (QueryInfoAsyncData, 1);
data->attributes = g_strdup (attributes);
data->flags = flags;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_query_info_async);
g_task_set_task_data (task, data, (GDestroyNotify)query_info_data_free);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, query_info_async_thread);
g_object_unref (task);
}
static GFileInfo *
g_file_real_query_info_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), NULL);
return g_task_propagate_pointer (G_TASK (res), error);
}
static void
query_filesystem_info_async_thread (GTask *task,
gpointer object,
gpointer task_data,
GCancellable *cancellable)
{
const char *attributes = task_data;
GFileInfo *info;
GError *error = NULL;
info = g_file_query_filesystem_info (G_FILE (object), attributes, cancellable, &error);
if (info)
g_task_return_pointer (task, info, g_object_unref);
else
g_task_return_error (task, error);
}
static void
g_file_real_query_filesystem_info_async (GFile *file,
const char *attributes,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_query_filesystem_info_async);
g_task_set_task_data (task, g_strdup (attributes), g_free);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, query_filesystem_info_async_thread);
g_object_unref (task);
}
static GFileInfo *
g_file_real_query_filesystem_info_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), NULL);
return g_task_propagate_pointer (G_TASK (res), error);
}
static void
enumerate_children_async_thread (GTask *task,
gpointer object,
gpointer task_data,
GCancellable *cancellable)
{
QueryInfoAsyncData *data = task_data;
GFileEnumerator *enumerator;
GError *error = NULL;
enumerator = g_file_enumerate_children (G_FILE (object), data->attributes, data->flags, cancellable, &error);
if (error)
g_task_return_error (task, error);
else
g_task_return_pointer (task, enumerator, g_object_unref);
}
static void
g_file_real_enumerate_children_async (GFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
QueryInfoAsyncData *data;
data = g_new0 (QueryInfoAsyncData, 1);
data->attributes = g_strdup (attributes);
data->flags = flags;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_enumerate_children_async);
g_task_set_task_data (task, data, (GDestroyNotify)query_info_data_free);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, enumerate_children_async_thread);
g_object_unref (task);
}
static GFileEnumerator *
g_file_real_enumerate_children_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), NULL);
return g_task_propagate_pointer (G_TASK (res), error);
}
static void
open_read_async_thread (GTask *task,
gpointer object,
gpointer task_data,
GCancellable *cancellable)
{
GFileInputStream *stream;
GError *error = NULL;
stream = g_file_read (G_FILE (object), cancellable, &error);
if (stream)
g_task_return_pointer (task, stream, g_object_unref);
else
g_task_return_error (task, error);
}
static void
g_file_real_read_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_read_async);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, open_read_async_thread);
g_object_unref (task);
}
static GFileInputStream *
g_file_real_read_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), NULL);
return g_task_propagate_pointer (G_TASK (res), error);
}
static void
append_to_async_thread (GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
GFileCreateFlags *data = task_data;
GFileOutputStream *stream;
GError *error = NULL;
stream = g_file_append_to (G_FILE (source_object), *data, cancellable, &error);
if (stream)
g_task_return_pointer (task, stream, g_object_unref);
else
g_task_return_error (task, error);
}
static void
g_file_real_append_to_async (GFile *file,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileCreateFlags *data;
GTask *task;
data = g_new0 (GFileCreateFlags, 1);
*data = flags;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_append_to_async);
g_task_set_task_data (task, data, g_free);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, append_to_async_thread);
g_object_unref (task);
}
static GFileOutputStream *
g_file_real_append_to_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), NULL);
return g_task_propagate_pointer (G_TASK (res), error);
}
static void
create_async_thread (GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
GFileCreateFlags *data = task_data;
GFileOutputStream *stream;
GError *error = NULL;
stream = g_file_create (G_FILE (source_object), *data, cancellable, &error);
if (stream)
g_task_return_pointer (task, stream, g_object_unref);
else
g_task_return_error (task, error);
}
static void
g_file_real_create_async (GFile *file,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileCreateFlags *data;
GTask *task;
data = g_new0 (GFileCreateFlags, 1);
*data = flags;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_create_async);
g_task_set_task_data (task, data, g_free);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, create_async_thread);
g_object_unref (task);
}
static GFileOutputStream *
g_file_real_create_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), NULL);
return g_task_propagate_pointer (G_TASK (res), error);
}
typedef struct {
GFileOutputStream *stream;
char *etag;
gboolean make_backup;
GFileCreateFlags flags;
} ReplaceAsyncData;
static void
replace_async_data_free (ReplaceAsyncData *data)
{
if (data->stream)
g_object_unref (data->stream);
g_free (data->etag);
g_free (data);
}
static void
replace_async_thread (GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
GFileOutputStream *stream;
ReplaceAsyncData *data = task_data;
GError *error = NULL;
stream = g_file_replace (G_FILE (source_object),
data->etag,
data->make_backup,
data->flags,
cancellable,
&error);
if (stream)
g_task_return_pointer (task, stream, g_object_unref);
else
g_task_return_error (task, error);
}
static void
g_file_real_replace_async (GFile *file,
const char *etag,
gboolean make_backup,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
ReplaceAsyncData *data;
data = g_new0 (ReplaceAsyncData, 1);
data->etag = g_strdup (etag);
data->make_backup = make_backup;
data->flags = flags;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_replace_async);
g_task_set_task_data (task, data, (GDestroyNotify)replace_async_data_free);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, replace_async_thread);
g_object_unref (task);
}
static GFileOutputStream *
g_file_real_replace_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), NULL);
return g_task_propagate_pointer (G_TASK (res), error);
}
static void
delete_async_thread (GTask *task,
gpointer object,
gpointer task_data,
GCancellable *cancellable)
{
GError *error = NULL;
if (g_file_delete (G_FILE (object), cancellable, &error))
g_task_return_boolean (task, TRUE);
else
g_task_return_error (task, error);
}
static void
g_file_real_delete_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_delete_async);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, delete_async_thread);
g_object_unref (task);
}
static gboolean
g_file_real_delete_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), FALSE);
return g_task_propagate_boolean (G_TASK (res), error);
}
static void
trash_async_thread (GTask *task,
gpointer object,
gpointer task_data,
GCancellable *cancellable)
{
GError *error = NULL;
if (g_file_trash (G_FILE (object), cancellable, &error))
g_task_return_boolean (task, TRUE);
else
g_task_return_error (task, error);
}
static void
g_file_real_trash_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_trash_async);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, trash_async_thread);
g_object_unref (task);
}
static gboolean
g_file_real_trash_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), FALSE);
return g_task_propagate_boolean (G_TASK (res), error);
}
static void
make_directory_async_thread (GTask *task,
gpointer object,
gpointer task_data,
GCancellable *cancellable)
{
GError *error = NULL;
if (g_file_make_directory (G_FILE (object), cancellable, &error))
g_task_return_boolean (task, TRUE);
else
g_task_return_error (task, error);
}
static void
g_file_real_make_directory_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_make_directory_async);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, make_directory_async_thread);
g_object_unref (task);
}
static gboolean
g_file_real_make_directory_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), FALSE);
return g_task_propagate_boolean (G_TASK (res), error);
}
static void
open_readwrite_async_thread (GTask *task,
gpointer object,
gpointer task_data,
GCancellable *cancellable)
{
GFileIOStream *stream;
GError *error = NULL;
stream = g_file_open_readwrite (G_FILE (object), cancellable, &error);
if (stream == NULL)
g_task_return_error (task, error);
else
g_task_return_pointer (task, stream, g_object_unref);
}
static void
g_file_real_open_readwrite_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_open_readwrite_async);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, open_readwrite_async_thread);
g_object_unref (task);
}
static GFileIOStream *
g_file_real_open_readwrite_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), NULL);
return g_task_propagate_pointer (G_TASK (res), error);
}
static void
create_readwrite_async_thread (GTask *task,
gpointer object,
gpointer task_data,
GCancellable *cancellable)
{
GFileCreateFlags *data = task_data;
GFileIOStream *stream;
GError *error = NULL;
stream = g_file_create_readwrite (G_FILE (object), *data, cancellable, &error);
if (stream == NULL)
g_task_return_error (task, error);
else
g_task_return_pointer (task, stream, g_object_unref);
}
static void
g_file_real_create_readwrite_async (GFile *file,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileCreateFlags *data;
GTask *task;
data = g_new0 (GFileCreateFlags, 1);
*data = flags;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_create_readwrite_async);
g_task_set_task_data (task, data, g_free);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, create_readwrite_async_thread);
g_object_unref (task);
}
static GFileIOStream *
g_file_real_create_readwrite_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), NULL);
return g_task_propagate_pointer (G_TASK (res), error);
}
typedef struct {
char *etag;
gboolean make_backup;
GFileCreateFlags flags;
} ReplaceRWAsyncData;
static void
replace_rw_async_data_free (ReplaceRWAsyncData *data)
{
g_free (data->etag);
g_free (data);
}
static void
replace_readwrite_async_thread (GTask *task,
gpointer object,
gpointer task_data,
GCancellable *cancellable)
{
GFileIOStream *stream;
GError *error = NULL;
ReplaceRWAsyncData *data = task_data;
stream = g_file_replace_readwrite (G_FILE (object),
data->etag,
data->make_backup,
data->flags,
cancellable,
&error);
if (stream == NULL)
g_task_return_error (task, error);
else
g_task_return_pointer (task, stream, g_object_unref);
}
static void
g_file_real_replace_readwrite_async (GFile *file,
const char *etag,
gboolean make_backup,
GFileCreateFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
ReplaceRWAsyncData *data;
data = g_new0 (ReplaceRWAsyncData, 1);
data->etag = g_strdup (etag);
data->make_backup = make_backup;
data->flags = flags;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_replace_readwrite_async);
g_task_set_task_data (task, data, (GDestroyNotify)replace_rw_async_data_free);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, replace_readwrite_async_thread);
g_object_unref (task);
}
static GFileIOStream *
g_file_real_replace_readwrite_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), NULL);
return g_task_propagate_pointer (G_TASK (res), error);
}
static void
set_display_name_async_thread (GTask *task,
gpointer object,
gpointer task_data,
GCancellable *cancellable)
{
GError *error = NULL;
char *name = task_data;
GFile *file;
file = g_file_set_display_name (G_FILE (object), name, cancellable, &error);
if (file == NULL)
g_task_return_error (task, error);
else
g_task_return_pointer (task, file, g_object_unref);
}
static void
g_file_real_set_display_name_async (GFile *file,
const char *display_name,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_set_display_name_async);
g_task_set_task_data (task, g_strdup (display_name), g_free);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, set_display_name_async_thread);
g_object_unref (task);
}
static GFile *
g_file_real_set_display_name_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), NULL);
return g_task_propagate_pointer (G_TASK (res), error);
}
typedef struct {
GFileQueryInfoFlags flags;
GFileInfo *info;
gboolean res;
GError *error;
} SetInfoAsyncData;
static void
set_info_data_free (SetInfoAsyncData *data)
{
if (data->info)
g_object_unref (data->info);
if (data->error)
g_error_free (data->error);
g_free (data);
}
static void
set_info_async_thread (GTask *task,
gpointer object,
gpointer task_data,
GCancellable *cancellable)
{
SetInfoAsyncData *data = task_data;
data->error = NULL;
data->res = g_file_set_attributes_from_info (G_FILE (object),
data->info,
data->flags,
cancellable,
&data->error);
}
static void
g_file_real_set_attributes_async (GFile *file,
GFileInfo *info,
GFileQueryInfoFlags flags,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
SetInfoAsyncData *data;
data = g_new0 (SetInfoAsyncData, 1);
data->info = g_file_info_dup (info);
data->flags = flags;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_set_attributes_async);
g_task_set_task_data (task, data, (GDestroyNotify)set_info_data_free);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, set_info_async_thread);
g_object_unref (task);
}
static gboolean
g_file_real_set_attributes_finish (GFile *file,
GAsyncResult *res,
GFileInfo **info,
GError **error)
{
SetInfoAsyncData *data;
g_return_val_if_fail (g_task_is_valid (res, file), FALSE);
data = g_task_get_task_data (G_TASK (res));
if (info)
*info = g_object_ref (data->info);
if (error != NULL && data->error)
*error = g_error_copy (data->error);
return data->res;
}
static void
find_enclosing_mount_async_thread (GTask *task,
gpointer object,
gpointer task_data,
GCancellable *cancellable)
{
GError *error = NULL;
GMount *mount;
mount = g_file_find_enclosing_mount (G_FILE (object), cancellable, &error);
if (mount == NULL)
g_task_return_error (task, error);
else
g_task_return_pointer (task, mount, g_object_unref);
}
static void
g_file_real_find_enclosing_mount_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_find_enclosing_mount_async);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, find_enclosing_mount_async_thread);
g_object_unref (task);
}
static GMount *
g_file_real_find_enclosing_mount_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), NULL);
return g_task_propagate_pointer (G_TASK (res), error);
}
typedef struct {
GFile *source;
GFile *destination;
GFileCopyFlags flags;
GFileProgressCallback progress_cb;
gpointer progress_cb_data;
} CopyAsyncData;
static void
copy_async_data_free (CopyAsyncData *data)
{
g_object_unref (data->source);
g_object_unref (data->destination);
g_slice_free (CopyAsyncData, data);
}
typedef struct {
CopyAsyncData *data;
goffset current_num_bytes;
goffset total_num_bytes;
} ProgressData;
static gboolean
copy_async_progress_in_main (gpointer user_data)
{
ProgressData *progress = user_data;
CopyAsyncData *data = progress->data;
data->progress_cb (progress->current_num_bytes,
progress->total_num_bytes,
data->progress_cb_data);
return FALSE;
}
static void
copy_async_progress_callback (goffset current_num_bytes,
goffset total_num_bytes,
gpointer user_data)
{
GTask *task = user_data;
CopyAsyncData *data = g_task_get_task_data (task);
ProgressData *progress;
progress = g_new (ProgressData, 1);
progress->data = data;
progress->current_num_bytes = current_num_bytes;
progress->total_num_bytes = total_num_bytes;
g_main_context_invoke_full (g_task_get_context (task),
g_task_get_priority (task),
copy_async_progress_in_main,
progress,
g_free);
}
static void
copy_async_thread (GTask *task,
gpointer source,
gpointer task_data,
GCancellable *cancellable)
{
CopyAsyncData *data = task_data;
gboolean result;
GError *error = NULL;
result = g_file_copy (data->source,
data->destination,
data->flags,
cancellable,
(data->progress_cb != NULL) ? copy_async_progress_callback : NULL,
task,
&error);
if (result)
g_task_return_boolean (task, TRUE);
else
g_task_return_error (task, error);
}
static void
g_file_real_copy_async (GFile *source,
GFile *destination,
GFileCopyFlags flags,
int io_priority,
GCancellable *cancellable,
GFileProgressCallback progress_callback,
gpointer progress_callback_data,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
CopyAsyncData *data;
data = g_slice_new (CopyAsyncData);
data->source = g_object_ref (source);
data->destination = g_object_ref (destination);
data->flags = flags;
data->progress_cb = progress_callback;
data->progress_cb_data = progress_callback_data;
task = g_task_new (source, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_copy_async);
g_task_set_task_data (task, data, (GDestroyNotify)copy_async_data_free);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, copy_async_thread);
g_object_unref (task);
}
static gboolean
g_file_real_copy_finish (GFile *file,
GAsyncResult *res,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, file), FALSE);
return g_task_propagate_boolean (G_TASK (res), error);
}
/********************************************
* Default VFS operations *
********************************************/
/**
* g_file_new_for_path:
* @path: (type filename): a string containing a relative or absolute path.
* The string must be encoded in the glib filename encoding.
*
* Constructs a #GFile for a given path. This operation never
* fails, but the returned object might not support any I/O
* operation if @path is malformed.
*
* Returns: (transfer full): a new #GFile for the given @path.
* Free the returned object with g_object_unref().
*/
GFile *
g_file_new_for_path (const char *path)
{
g_return_val_if_fail (path != NULL, NULL);
return g_vfs_get_file_for_path (g_vfs_get_default (), path);
}
/**
* g_file_new_for_uri:
* @uri: a UTF-8 string containing a URI
*
* Constructs a #GFile for a given URI. This operation never
* fails, but the returned object might not support any I/O
* operation if @uri is malformed or if the uri type is
* not supported.
*
* Returns: (transfer full): a new #GFile for the given @uri.
* Free the returned object with g_object_unref().
*/
GFile *
g_file_new_for_uri (const char *uri)
{
g_return_val_if_fail (uri != NULL, NULL);
return g_vfs_get_file_for_uri (g_vfs_get_default (), uri);
}
/**
* g_file_new_tmp:
* @tmpl: (type filename) (nullable): Template for the file
* name, as in g_file_open_tmp(), or %NULL for a default template
* @iostream: (out): on return, a #GFileIOStream for the created file
* @error: a #GError, or %NULL
*
* Opens a file in the preferred directory for temporary files (as
* returned by g_get_tmp_dir()) and returns a #GFile and
* #GFileIOStream pointing to it.
*
* @tmpl should be a string in the GLib file name encoding
* containing a sequence of six 'X' characters, and containing no
* directory components. If it is %NULL, a default template is used.
*
* Unlike the other #GFile constructors, this will return %NULL if
* a temporary file could not be created.
*
* Returns: (transfer full): a new #GFile.
* Free the returned object with g_object_unref().
*
* Since: 2.32
*/
GFile *
g_file_new_tmp (const char *tmpl,
GFileIOStream **iostream,
GError **error)
{
gint fd;
gchar *path;
GFile *file;
GFileOutputStream *output;
g_return_val_if_fail (iostream != NULL, NULL);
fd = g_file_open_tmp (tmpl, &path, error);
if (fd == -1)
return NULL;
file = g_file_new_for_path (path);
output = _g_local_file_output_stream_new (fd);
*iostream = _g_local_file_io_stream_new (G_LOCAL_FILE_OUTPUT_STREAM (output));
g_object_unref (output);
g_free (path);
return file;
}
/**
* g_file_parse_name:
* @parse_name: a file name or path to be parsed
*
* Constructs a #GFile with the given @parse_name (i.e. something
* given by g_file_get_parse_name()). This operation never fails,
* but the returned object might not support any I/O operation if
* the @parse_name cannot be parsed.
*
* Returns: (transfer full): a new #GFile.
*/
GFile *
g_file_parse_name (const char *parse_name)
{
g_return_val_if_fail (parse_name != NULL, NULL);
return g_vfs_parse_name (g_vfs_get_default (), parse_name);
}
/**
* g_file_new_build_filename:
* @first_element: (type filename): the first element in the path
* @...: remaining elements in path, terminated by %NULL
*
* Constructs a #GFile from a series of elements using the correct
* separator for filenames.
*
* Using this function is equivalent to calling g_build_filename(),
* followed by g_file_new_for_path() on the result.
*
* Returns: (transfer full): a new #GFile
*
* Since: 2.56
*/
GFile *
g_file_new_build_filename (const gchar *first_element,
...)
{
gchar *str;
GFile *file;
va_list args;
g_return_val_if_fail (first_element != NULL, NULL);
va_start (args, first_element);
str = g_build_filename_valist (first_element, &args);
va_end (args);
file = g_file_new_for_path (str);
g_free (str);
return file;
}
static gboolean
is_valid_scheme_character (char c)
{
return g_ascii_isalnum (c) || c == '+' || c == '-' || c == '.';
}
/* Following RFC 2396, valid schemes are built like:
* scheme = alpha *( alpha | digit | "+" | "-" | "." )
*/
static gboolean
has_valid_scheme (const char *uri)
{
const char *p;
p = uri;
if (!g_ascii_isalpha (*p))
return FALSE;
do {
p++;
} while (is_valid_scheme_character (*p));
return *p == ':';
}
static GFile *
new_for_cmdline_arg (const gchar *arg,
const gchar *cwd)
{
GFile *file;
char *filename;
if (g_path_is_absolute (arg))
return g_file_new_for_path (arg);
if (has_valid_scheme (arg))
return g_file_new_for_uri (arg);
if (cwd == NULL)
{
char *current_dir;
current_dir = g_get_current_dir ();
filename = g_build_filename (current_dir, arg, NULL);
g_free (current_dir);
}
else
filename = g_build_filename (cwd, arg, NULL);
file = g_file_new_for_path (filename);
g_free (filename);
return file;
}
/**
* g_file_new_for_commandline_arg:
* @arg: (type filename): a command line string
*
* Creates a #GFile with the given argument from the command line.
* The value of @arg can be either a URI, an absolute path or a
* relative path resolved relative to the current working directory.
* This operation never fails, but the returned object might not
* support any I/O operation if @arg points to a malformed path.
*
* Note that on Windows, this function expects its argument to be in
* UTF-8 -- not the system code page. This means that you
* should not use this function with string from argv as it is passed
* to main(). g_win32_get_command_line() will return a UTF-8 version of
* the commandline. #GApplication also uses UTF-8 but
* g_application_command_line_create_file_for_arg() may be more useful
* for you there. It is also always possible to use this function with
* #GOptionContext arguments of type %G_OPTION_ARG_FILENAME.
*
* Returns: (transfer full): a new #GFile.
* Free the returned object with g_object_unref().
*/
GFile *
g_file_new_for_commandline_arg (const char *arg)
{
g_return_val_if_fail (arg != NULL, NULL);
return new_for_cmdline_arg (arg, NULL);
}
/**
* g_file_new_for_commandline_arg_and_cwd:
* @arg: (type filename): a command line string
* @cwd: (type filename): the current working directory of the commandline
*
* Creates a #GFile with the given argument from the command line.
*
* This function is similar to g_file_new_for_commandline_arg() except
* that it allows for passing the current working directory as an
* argument instead of using the current working directory of the
* process.
*
* This is useful if the commandline argument was given in a context
* other than the invocation of the current process.
*
* See also g_application_command_line_create_file_for_arg().
*
* Returns: (transfer full): a new #GFile
*
* Since: 2.36
**/
GFile *
g_file_new_for_commandline_arg_and_cwd (const gchar *arg,
const gchar *cwd)
{
g_return_val_if_fail (arg != NULL, NULL);
g_return_val_if_fail (cwd != NULL, NULL);
return new_for_cmdline_arg (arg, cwd);
}
/**
* g_file_mount_enclosing_volume:
* @location: input #GFile
* @flags: flags affecting the operation
* @mount_operation: (nullable): a #GMountOperation
* or %NULL to avoid user interaction
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (nullable): a #GAsyncReadyCallback to call
* when the request is satisfied, or %NULL
* @user_data: the data to pass to callback function
*
* Starts a @mount_operation, mounting the volume that contains
* the file @location.
*
* When this operation has completed, @callback will be called with
* @user_user data, and the operation can be finalized with
* g_file_mount_enclosing_volume_finish().
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*/
void
g_file_mount_enclosing_volume (GFile *location,
GMountMountFlags flags,
GMountOperation *mount_operation,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (location));
iface = G_FILE_GET_IFACE (location);
if (iface->mount_enclosing_volume == NULL)
{
g_task_report_new_error (location, callback, user_data,
g_file_mount_enclosing_volume,
G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("volume doesn’t implement mount"));
return;
}
(* iface->mount_enclosing_volume) (location, flags, mount_operation, cancellable, callback, user_data);
}
/**
* g_file_mount_enclosing_volume_finish:
* @location: input #GFile
* @result: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes a mount operation started by g_file_mount_enclosing_volume().
*
* Returns: %TRUE if successful. If an error has occurred,
* this function will return %FALSE and set @error
* appropriately if present.
*/
gboolean
g_file_mount_enclosing_volume_finish (GFile *location,
GAsyncResult *result,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (location), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
if (g_async_result_legacy_propagate_error (result, error))
return FALSE;
else if (g_async_result_is_tagged (result, g_file_mount_enclosing_volume))
return g_task_propagate_boolean (G_TASK (result), error);
iface = G_FILE_GET_IFACE (location);
return (* iface->mount_enclosing_volume_finish) (location, result, error);
}
/********************************************
* Utility functions *
********************************************/
/**
* g_file_query_default_handler:
* @file: a #GFile to open
* @cancellable: optional #GCancellable object, %NULL to ignore
* @error: a #GError, or %NULL
*
* Returns the #GAppInfo that is registered as the default
* application to handle the file specified by @file.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: (transfer full): a #GAppInfo if the handle was found,
* %NULL if there were errors.
* When you are done with it, release it with g_object_unref()
*/
GAppInfo *
g_file_query_default_handler (GFile *file,
GCancellable *cancellable,
GError **error)
{
char *uri_scheme;
const char *content_type;
GAppInfo *appinfo;
GFileInfo *info;
char *path;
uri_scheme = g_file_get_uri_scheme (file);
if (uri_scheme && uri_scheme[0] != '\0')
{
appinfo = g_app_info_get_default_for_uri_scheme (uri_scheme);
g_free (uri_scheme);
if (appinfo != NULL)
return appinfo;
}
else
g_free (uri_scheme);
info = g_file_query_info (file,
G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE ","
G_FILE_ATTRIBUTE_STANDARD_FAST_CONTENT_TYPE,
0,
cancellable,
error);
if (info == NULL)
return NULL;
appinfo = NULL;
content_type = g_file_info_get_content_type (info);
if (content_type == NULL)
content_type = g_file_info_get_attribute_string (info, G_FILE_ATTRIBUTE_STANDARD_FAST_CONTENT_TYPE);
if (content_type)
{
/* Don't use is_native(), as we want to support fuse paths if available */
path = g_file_get_path (file);
appinfo = g_app_info_get_default_for_type (content_type,
path == NULL);
g_free (path);
}
g_object_unref (info);
if (appinfo != NULL)
return appinfo;
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("No application is registered as handling this file"));
return NULL;
}
static void
query_default_handler_query_info_cb (GObject *object,
GAsyncResult *result,
gpointer user_data)
{
GFile *file = G_FILE (object);
GTask *task = G_TASK (user_data);
GError *error = NULL;
GFileInfo *info;
const char *content_type;
GAppInfo *appinfo = NULL;
info = g_file_query_info_finish (file, result, &error);
if (info == NULL)
{
g_task_return_error (task, g_steal_pointer (&error));
g_object_unref (task);
return;
}
content_type = g_file_info_get_content_type (info);
if (content_type == NULL)
content_type = g_file_info_get_attribute_string (info, G_FILE_ATTRIBUTE_STANDARD_FAST_CONTENT_TYPE);
if (content_type)
{
char *path;
/* Don't use is_native(), as we want to support fuse paths if available */
path = g_file_get_path (file);
/* FIXME: The following still uses blocking calls. */
appinfo = g_app_info_get_default_for_type (content_type,
path == NULL);
g_free (path);
}
g_object_unref (info);
if (appinfo != NULL)
g_task_return_pointer (task, g_steal_pointer (&appinfo), g_object_unref);
else
g_task_return_new_error (task,
G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("No application is registered as handling this file"));
g_object_unref (task);
}
/**
* g_file_query_default_handler_async:
* @file: a #GFile to open
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: optional #GCancellable object, %NULL to ignore
* @callback: (nullable): a #GAsyncReadyCallback to call when the request is done
* @user_data: (nullable): data to pass to @callback
*
* Async version of g_file_query_default_handler().
*
* Since: 2.60
*/
void
g_file_query_default_handler_async (GFile *file,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GTask *task;
char *uri_scheme;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_query_default_handler_async);
uri_scheme = g_file_get_uri_scheme (file);
if (uri_scheme && uri_scheme[0] != '\0')
{
GAppInfo *appinfo;
/* FIXME: The following still uses blocking calls. */
appinfo = g_app_info_get_default_for_uri_scheme (uri_scheme);
g_free (uri_scheme);
if (appinfo != NULL)
{
g_task_return_pointer (task, g_steal_pointer (&appinfo), g_object_unref);
g_object_unref (task);
return;
}
}
else
g_free (uri_scheme);
g_file_query_info_async (file,
G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE ","
G_FILE_ATTRIBUTE_STANDARD_FAST_CONTENT_TYPE,
0,
io_priority,
cancellable,
query_default_handler_query_info_cb,
g_steal_pointer (&task));
}
/**
* g_file_query_default_handler_finish:
* @file: a #GFile to open
* @result: a #GAsyncResult
* @error: (nullable): a #GError
*
* Finishes a g_file_query_default_handler_async() operation.
*
* Returns: (transfer full): a #GAppInfo if the handle was found,
* %NULL if there were errors.
* When you are done with it, release it with g_object_unref()
*
* Since: 2.60
*/
GAppInfo *
g_file_query_default_handler_finish (GFile *file,
GAsyncResult *result,
GError **error)
{
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (g_task_is_valid (result, file), NULL);
return g_task_propagate_pointer (G_TASK (result), error);
}
#define GET_CONTENT_BLOCK_SIZE 8192
/**
* g_file_load_contents:
* @file: input #GFile
* @cancellable: optional #GCancellable object, %NULL to ignore
* @contents: (out) (transfer full) (element-type guint8) (array length=length): a location to place the contents of the file
* @length: (out) (optional): a location to place the length of the contents of the file,
* or %NULL if the length is not needed
* @etag_out: (out) (optional) (nullable): a location to place the current entity tag for the file,
* or %NULL if the entity tag is not needed
* @error: a #GError, or %NULL
*
* Loads the content of the file into memory. The data is always
* zero-terminated, but this is not included in the resultant @length.
* The returned @contents should be freed with g_free() when no longer
* needed.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* Returns: %TRUE if the @file's contents were successfully loaded.
* %FALSE if there were errors.
*/
gboolean
g_file_load_contents (GFile *file,
GCancellable *cancellable,
char **contents,
gsize *length,
char **etag_out,
GError **error)
{
GFileInputStream *in;
GByteArray *content;
gsize pos;
gssize res;
GFileInfo *info;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (contents != NULL, FALSE);
in = g_file_read (file, cancellable, error);
if (in == NULL)
return FALSE;
content = g_byte_array_new ();
pos = 0;
g_byte_array_set_size (content, pos + GET_CONTENT_BLOCK_SIZE + 1);
while ((res = g_input_stream_read (G_INPUT_STREAM (in),
content->data + pos,
GET_CONTENT_BLOCK_SIZE,
cancellable, error)) > 0)
{
pos += res;
g_byte_array_set_size (content, pos + GET_CONTENT_BLOCK_SIZE + 1);
}
if (etag_out)
{
*etag_out = NULL;
info = g_file_input_stream_query_info (in,
G_FILE_ATTRIBUTE_ETAG_VALUE,
cancellable,
NULL);
if (info)
{
*etag_out = g_strdup (g_file_info_get_etag (info));
g_object_unref (info);
}
}
/* Ignore errors on close */
g_input_stream_close (G_INPUT_STREAM (in), cancellable, NULL);
g_object_unref (in);
if (res < 0)
{
/* error is set already */
g_byte_array_free (content, TRUE);
return FALSE;
}
if (length)
*length = pos;
/* Zero terminate (we got an extra byte allocated for this */
content->data[pos] = 0;
*contents = (char *)g_byte_array_free (content, FALSE);
return TRUE;
}
typedef struct {
GTask *task;
GFileReadMoreCallback read_more_callback;
GByteArray *content;
gsize pos;
char *etag;
} LoadContentsData;
static void
load_contents_data_free (LoadContentsData *data)
{
if (data->content)
g_byte_array_free (data->content, TRUE);
g_free (data->etag);
g_free (data);
}
static void
load_contents_close_callback (GObject *obj,
GAsyncResult *close_res,
gpointer user_data)
{
GInputStream *stream = G_INPUT_STREAM (obj);
LoadContentsData *data = user_data;
/* Ignore errors here, we're only reading anyway */
g_input_stream_close_finish (stream, close_res, NULL);
g_object_unref (stream);
g_task_return_boolean (data->task, TRUE);
g_object_unref (data->task);
}
static void
load_contents_fstat_callback (GObject *obj,
GAsyncResult *stat_res,
gpointer user_data)
{
GInputStream *stream = G_INPUT_STREAM (obj);
LoadContentsData *data = user_data;
GFileInfo *info;
info = g_file_input_stream_query_info_finish (G_FILE_INPUT_STREAM (stream),
stat_res, NULL);
if (info)
{
data->etag = g_strdup (g_file_info_get_etag (info));
g_object_unref (info);
}
g_input_stream_close_async (stream, 0,
g_task_get_cancellable (data->task),
load_contents_close_callback, data);
}
static void
load_contents_read_callback (GObject *obj,
GAsyncResult *read_res,
gpointer user_data)
{
GInputStream *stream = G_INPUT_STREAM (obj);
LoadContentsData *data = user_data;
GError *error = NULL;
gssize read_size;
read_size = g_input_stream_read_finish (stream, read_res, &error);
if (read_size < 0)
{
g_task_return_error (data->task, error);
g_object_unref (data->task);
/* Close the file ignoring any error */
g_input_stream_close_async (stream, 0, NULL, NULL, NULL);
g_object_unref (stream);
}
else if (read_size == 0)
{
g_file_input_stream_query_info_async (G_FILE_INPUT_STREAM (stream),
G_FILE_ATTRIBUTE_ETAG_VALUE,
0,
g_task_get_cancellable (data->task),
load_contents_fstat_callback,
data);
}
else if (read_size > 0)
{
data->pos += read_size;
g_byte_array_set_size (data->content,
data->pos + GET_CONTENT_BLOCK_SIZE);
if (data->read_more_callback &&
!data->read_more_callback ((char *)data->content->data, data->pos,
g_async_result_get_user_data (G_ASYNC_RESULT (data->task))))
g_file_input_stream_query_info_async (G_FILE_INPUT_STREAM (stream),
G_FILE_ATTRIBUTE_ETAG_VALUE,
0,
g_task_get_cancellable (data->task),
load_contents_fstat_callback,
data);
else
g_input_stream_read_async (stream,
data->content->data + data->pos,
GET_CONTENT_BLOCK_SIZE,
0,
g_task_get_cancellable (data->task),
load_contents_read_callback,
data);
}
}
static void
load_contents_open_callback (GObject *obj,
GAsyncResult *open_res,
gpointer user_data)
{
GFile *file = G_FILE (obj);
GFileInputStream *stream;
LoadContentsData *data = user_data;
GError *error = NULL;
stream = g_file_read_finish (file, open_res, &error);
if (stream)
{
g_byte_array_set_size (data->content,
data->pos + GET_CONTENT_BLOCK_SIZE);
g_input_stream_read_async (G_INPUT_STREAM (stream),
data->content->data + data->pos,
GET_CONTENT_BLOCK_SIZE,
0,
g_task_get_cancellable (data->task),
load_contents_read_callback,
data);
}
else
{
g_task_return_error (data->task, error);
g_object_unref (data->task);
}
}
/**
* g_file_load_partial_contents_async: (skip)
* @file: input #GFile
* @cancellable: optional #GCancellable object, %NULL to ignore
* @read_more_callback: (scope call) (closure user_data): a
* #GFileReadMoreCallback to receive partial data
* and to specify whether further data should be read
* @callback: (scope async) (closure user_data): a #GAsyncReadyCallback to call
* when the request is satisfied
* @user_data: the data to pass to the callback functions
*
* Reads the partial contents of a file. A #GFileReadMoreCallback should
* be used to stop reading from the file when appropriate, else this
* function will behave exactly as g_file_load_contents_async(). This
* operation can be finished by g_file_load_partial_contents_finish().
*
* Users of this function should be aware that @user_data is passed to
* both the @read_more_callback and the @callback.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*/
void
g_file_load_partial_contents_async (GFile *file,
GCancellable *cancellable,
GFileReadMoreCallback read_more_callback,
GAsyncReadyCallback callback,
gpointer user_data)
{
LoadContentsData *data;
g_return_if_fail (G_IS_FILE (file));
data = g_new0 (LoadContentsData, 1);
data->read_more_callback = read_more_callback;
data->content = g_byte_array_new ();
data->task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (data->task, g_file_load_partial_contents_async);
g_task_set_task_data (data->task, data, (GDestroyNotify)load_contents_data_free);
g_file_read_async (file,
0,
g_task_get_cancellable (data->task),
load_contents_open_callback,
data);
}
/**
* g_file_load_partial_contents_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @contents: (out) (transfer full) (element-type guint8) (array length=length): a location to place the contents of the file
* @length: (out) (optional): a location to place the length of the contents of the file,
* or %NULL if the length is not needed
* @etag_out: (out) (optional) (nullable): a location to place the current entity tag for the file,
* or %NULL if the entity tag is not needed
* @error: a #GError, or %NULL
*
* Finishes an asynchronous partial load operation that was started
* with g_file_load_partial_contents_async(). The data is always
* zero-terminated, but this is not included in the resultant @length.
* The returned @contents should be freed with g_free() when no longer
* needed.
*
* Returns: %TRUE if the load was successful. If %FALSE and @error is
* present, it will be set appropriately.
*/
gboolean
g_file_load_partial_contents_finish (GFile *file,
GAsyncResult *res,
char **contents,
gsize *length,
char **etag_out,
GError **error)
{
GTask *task;
LoadContentsData *data;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (g_task_is_valid (res, file), FALSE);
g_return_val_if_fail (contents != NULL, FALSE);
task = G_TASK (res);
if (!g_task_propagate_boolean (task, error))
{
if (length)
*length = 0;
return FALSE;
}
data = g_task_get_task_data (task);
if (length)
*length = data->pos;
if (etag_out)
{
*etag_out = data->etag;
data->etag = NULL;
}
/* Zero terminate */
g_byte_array_set_size (data->content, data->pos + 1);
data->content->data[data->pos] = 0;
*contents = (char *)g_byte_array_free (data->content, FALSE);
data->content = NULL;
return TRUE;
}
/**
* g_file_load_contents_async:
* @file: input #GFile
* @cancellable: optional #GCancellable object, %NULL to ignore
* @callback: a #GAsyncReadyCallback to call when the request is satisfied
* @user_data: the data to pass to callback function
*
* Starts an asynchronous load of the @file's contents.
*
* For more details, see g_file_load_contents() which is
* the synchronous version of this call.
*
* When the load operation has completed, @callback will be called
* with @user data. To finish the operation, call
* g_file_load_contents_finish() with the #GAsyncResult returned by
* the @callback.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*/
void
g_file_load_contents_async (GFile *file,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
g_file_load_partial_contents_async (file,
cancellable,
NULL,
callback, user_data);
}
/**
* g_file_load_contents_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @contents: (out) (transfer full) (element-type guint8) (array length=length): a location to place the contents of the file
* @length: (out) (optional): a location to place the length of the contents of the file,
* or %NULL if the length is not needed
* @etag_out: (out) (optional) (nullable): a location to place the current entity tag for the file,
* or %NULL if the entity tag is not needed
* @error: a #GError, or %NULL
*
* Finishes an asynchronous load of the @file's contents.
* The contents are placed in @contents, and @length is set to the
* size of the @contents string. The @contents should be freed with
* g_free() when no longer needed. If @etag_out is present, it will be
* set to the new entity tag for the @file.
*
* Returns: %TRUE if the load was successful. If %FALSE and @error is
* present, it will be set appropriately.
*/
gboolean
g_file_load_contents_finish (GFile *file,
GAsyncResult *res,
char **contents,
gsize *length,
char **etag_out,
GError **error)
{
return g_file_load_partial_contents_finish (file,
res,
contents,
length,
etag_out,
error);
}
/**
* g_file_replace_contents:
* @file: input #GFile
* @contents: (element-type guint8) (array length=length): a string containing the new contents for @file
* @length: the length of @contents in bytes
* @etag: (nullable): the old [entity-tag][gfile-etag] for the document,
* or %NULL
* @make_backup: %TRUE if a backup should be created
* @flags: a set of #GFileCreateFlags
* @new_etag: (out) (optional) (nullable): a location to a new [entity tag][gfile-etag]
* for the document. This should be freed with g_free() when no longer
* needed, or %NULL
* @cancellable: optional #GCancellable object, %NULL to ignore
* @error: a #GError, or %NULL
*
* Replaces the contents of @file with @contents of @length bytes.
*
* If @etag is specified (not %NULL), any existing file must have that etag,
* or the error %G_IO_ERROR_WRONG_ETAG will be returned.
*
* If @make_backup is %TRUE, this function will attempt to make a backup
* of @file. Internally, it uses g_file_replace(), so will try to replace the
* file contents in the safest way possible. For example, atomic renames are
* used when replacing local files’ contents.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* The returned @new_etag can be used to verify that the file hasn't
* changed the next time it is saved over.
*
* Returns: %TRUE if successful. If an error has occurred, this function
* will return %FALSE and set @error appropriately if present.
*/
gboolean
g_file_replace_contents (GFile *file,
const char *contents,
gsize length,
const char *etag,
gboolean make_backup,
GFileCreateFlags flags,
char **new_etag,
GCancellable *cancellable,
GError **error)
{
GFileOutputStream *out;
gsize pos, remainder;
gssize res;
gboolean ret;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (contents != NULL, FALSE);
out = g_file_replace (file, etag, make_backup, flags, cancellable, error);
if (out == NULL)
return FALSE;
pos = 0;
remainder = length;
while (remainder > 0 &&
(res = g_output_stream_write (G_OUTPUT_STREAM (out),
contents + pos,
MIN (remainder, GET_CONTENT_BLOCK_SIZE),
cancellable,
error)) > 0)
{
pos += res;
remainder -= res;
}
if (remainder > 0 && res < 0)
{
/* Ignore errors on close */
g_output_stream_close (G_OUTPUT_STREAM (out), cancellable, NULL);
g_object_unref (out);
/* error is set already */
return FALSE;
}
ret = g_output_stream_close (G_OUTPUT_STREAM (out), cancellable, error);
if (new_etag)
*new_etag = g_file_output_stream_get_etag (out);
g_object_unref (out);
return ret;
}
typedef struct {
GTask *task;
GBytes *content;
gsize pos;
char *etag;
gboolean failed;
} ReplaceContentsData;
static void
replace_contents_data_free (ReplaceContentsData *data)
{
g_bytes_unref (data->content);
g_free (data->etag);
g_free (data);
}
static void
replace_contents_close_callback (GObject *obj,
GAsyncResult *close_res,
gpointer user_data)
{
GOutputStream *stream = G_OUTPUT_STREAM (obj);
ReplaceContentsData *data = user_data;
/* Ignore errors here, we're only reading anyway */
g_output_stream_close_finish (stream, close_res, NULL);
if (!data->failed)
{
data->etag = g_file_output_stream_get_etag (G_FILE_OUTPUT_STREAM (stream));
g_task_return_boolean (data->task, TRUE);
}
g_object_unref (data->task);
}
static void
replace_contents_write_callback (GObject *obj,
GAsyncResult *read_res,
gpointer user_data)
{
GOutputStream *stream = G_OUTPUT_STREAM (obj);
ReplaceContentsData *data = user_data;
GError *error = NULL;
gssize write_size;
write_size = g_output_stream_write_finish (stream, read_res, &error);
if (write_size <= 0)
{
/* Error or EOF, close the file */
if (write_size < 0)
{
data->failed = TRUE;
g_task_return_error (data->task, error);
}
g_output_stream_close_async (stream, 0,
g_task_get_cancellable (data->task),
replace_contents_close_callback, data);
}
else if (write_size > 0)
{
const gchar *content;
gsize length;
content = g_bytes_get_data (data->content, &length);
data->pos += write_size;
if (data->pos >= length)
g_output_stream_close_async (stream, 0,
g_task_get_cancellable (data->task),
replace_contents_close_callback, data);
else
g_output_stream_write_async (stream,
content + data->pos,
length - data->pos,
0,
g_task_get_cancellable (data->task),
replace_contents_write_callback,
data);
}
}
static void
replace_contents_open_callback (GObject *obj,
GAsyncResult *open_res,
gpointer user_data)
{
GFile *file = G_FILE (obj);
GFileOutputStream *stream;
ReplaceContentsData *data = user_data;
GError *error = NULL;
stream = g_file_replace_finish (file, open_res, &error);
if (stream)
{
const gchar *content;
gsize length;
content = g_bytes_get_data (data->content, &length);
g_output_stream_write_async (G_OUTPUT_STREAM (stream),
content + data->pos,
length - data->pos,
0,
g_task_get_cancellable (data->task),
replace_contents_write_callback,
data);
g_object_unref (stream); /* ownership is transferred to the write_async() call above */
}
else
{
g_task_return_error (data->task, error);
g_object_unref (data->task);
}
}
/**
* g_file_replace_contents_async:
* @file: input #GFile
* @contents: (element-type guint8) (array length=length): string of contents to replace the file with
* @length: the length of @contents in bytes
* @etag: (nullable): a new [entity tag][gfile-etag] for the @file, or %NULL
* @make_backup: %TRUE if a backup should be created
* @flags: a set of #GFileCreateFlags
* @cancellable: optional #GCancellable object, %NULL to ignore
* @callback: a #GAsyncReadyCallback to call when the request is satisfied
* @user_data: the data to pass to callback function
*
* Starts an asynchronous replacement of @file with the given
* @contents of @length bytes. @etag will replace the document's
* current entity tag.
*
* When this operation has completed, @callback will be called with
* @user_user data, and the operation can be finalized with
* g_file_replace_contents_finish().
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* If @make_backup is %TRUE, this function will attempt to
* make a backup of @file.
*
* Note that no copy of @contents will be made, so it must stay valid
* until @callback is called. See g_file_replace_contents_bytes_async()
* for a #GBytes version that will automatically hold a reference to the
* contents (without copying) for the duration of the call.
*/
void
g_file_replace_contents_async (GFile *file,
const char *contents,
gsize length,
const char *etag,
gboolean make_backup,
GFileCreateFlags flags,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GBytes *bytes;
bytes = g_bytes_new_static (contents, length);
g_file_replace_contents_bytes_async (file, bytes, etag, make_backup, flags,
cancellable, callback, user_data);
g_bytes_unref (bytes);
}
/**
* g_file_replace_contents_bytes_async:
* @file: input #GFile
* @contents: a #GBytes
* @etag: (nullable): a new [entity tag][gfile-etag] for the @file, or %NULL
* @make_backup: %TRUE if a backup should be created
* @flags: a set of #GFileCreateFlags
* @cancellable: optional #GCancellable object, %NULL to ignore
* @callback: a #GAsyncReadyCallback to call when the request is satisfied
* @user_data: the data to pass to callback function
*
* Same as g_file_replace_contents_async() but takes a #GBytes input instead.
* This function will keep a ref on @contents until the operation is done.
* Unlike g_file_replace_contents_async() this allows forgetting about the
* content without waiting for the callback.
*
* When this operation has completed, @callback will be called with
* @user_user data, and the operation can be finalized with
* g_file_replace_contents_finish().
*
* Since: 2.40
*/
void
g_file_replace_contents_bytes_async (GFile *file,
GBytes *contents,
const char *etag,
gboolean make_backup,
GFileCreateFlags flags,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
ReplaceContentsData *data;
g_return_if_fail (G_IS_FILE (file));
g_return_if_fail (contents != NULL);
data = g_new0 (ReplaceContentsData, 1);
data->content = g_bytes_ref (contents);
data->task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (data->task, g_file_replace_contents_bytes_async);
g_task_set_task_data (data->task, data, (GDestroyNotify)replace_contents_data_free);
g_file_replace_async (file,
etag,
make_backup,
flags,
0,
g_task_get_cancellable (data->task),
replace_contents_open_callback,
data);
}
/**
* g_file_replace_contents_finish:
* @file: input #GFile
* @res: a #GAsyncResult
* @new_etag: (out) (optional) (nullable): a location of a new [entity tag][gfile-etag]
* for the document. This should be freed with g_free() when it is no
* longer needed, or %NULL
* @error: a #GError, or %NULL
*
* Finishes an asynchronous replace of the given @file. See
* g_file_replace_contents_async(). Sets @new_etag to the new entity
* tag for the document, if present.
*
* Returns: %TRUE on success, %FALSE on failure.
*/
gboolean
g_file_replace_contents_finish (GFile *file,
GAsyncResult *res,
char **new_etag,
GError **error)
{
GTask *task;
ReplaceContentsData *data;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (g_task_is_valid (res, file), FALSE);
task = G_TASK (res);
if (!g_task_propagate_boolean (task, error))
return FALSE;
data = g_task_get_task_data (task);
if (new_etag)
{
*new_etag = data->etag;
data->etag = NULL; /* Take ownership */
}
return TRUE;
}
gboolean
g_file_real_measure_disk_usage (GFile *file,
GFileMeasureFlags flags,
GCancellable *cancellable,
GFileMeasureProgressCallback progress_callback,
gpointer progress_data,
guint64 *disk_usage,
guint64 *num_dirs,
guint64 *num_files,
GError **error)
{
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
"Operation not supported for the current backend.");
return FALSE;
}
typedef struct
{
GFileMeasureFlags flags;
GFileMeasureProgressCallback progress_callback;
gpointer progress_data;
} MeasureTaskData;
typedef struct
{
guint64 disk_usage;
guint64 num_dirs;
guint64 num_files;
} MeasureResult;
typedef struct
{
GFileMeasureProgressCallback callback;
gpointer user_data;
gboolean reporting;
guint64 current_size;
guint64 num_dirs;
guint64 num_files;
} MeasureProgress;
static gboolean
measure_disk_usage_invoke_progress (gpointer user_data)
{
MeasureProgress *progress = user_data;
(* progress->callback) (progress->reporting,
progress->current_size, progress->num_dirs, progress->num_files,
progress->user_data);
return FALSE;
}
static void
measure_disk_usage_progress (gboolean reporting,
guint64 current_size,
guint64 num_dirs,
guint64 num_files,
gpointer user_data)
{
MeasureProgress progress;
GTask *task = user_data;
MeasureTaskData *data;
data = g_task_get_task_data (task);
progress.callback = data->progress_callback;
progress.user_data = data->progress_data;
progress.reporting = reporting;
progress.current_size = current_size;
progress.num_dirs = num_dirs;
progress.num_files = num_files;
g_main_context_invoke_full (g_task_get_context (task),
g_task_get_priority (task),
measure_disk_usage_invoke_progress,
g_memdup2 (&progress, sizeof progress),
g_free);
}
static void
measure_disk_usage_thread (GTask *task,
gpointer source_object,
gpointer task_data,
GCancellable *cancellable)
{
MeasureTaskData *data = task_data;
GError *error = NULL;
MeasureResult result = { 0, };
if (g_file_measure_disk_usage (source_object, data->flags, cancellable,
data->progress_callback ? measure_disk_usage_progress : NULL, task,
&result.disk_usage, &result.num_dirs, &result.num_files,
&error))
g_task_return_pointer (task, g_memdup2 (&result, sizeof result), g_free);
else
g_task_return_error (task, error);
}
static void
g_file_real_measure_disk_usage_async (GFile *file,
GFileMeasureFlags flags,
gint io_priority,
GCancellable *cancellable,
GFileMeasureProgressCallback progress_callback,
gpointer progress_data,
GAsyncReadyCallback callback,
gpointer user_data)
{
MeasureTaskData data;
GTask *task;
data.flags = flags;
data.progress_callback = progress_callback;
data.progress_data = progress_data;
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_real_measure_disk_usage_async);
g_task_set_task_data (task, g_memdup2 (&data, sizeof data), g_free);
g_task_set_priority (task, io_priority);
g_task_run_in_thread (task, measure_disk_usage_thread);
g_object_unref (task);
}
static gboolean
g_file_real_measure_disk_usage_finish (GFile *file,
GAsyncResult *result,
guint64 *disk_usage,
guint64 *num_dirs,
guint64 *num_files,
GError **error)
{
MeasureResult *measure_result;
g_return_val_if_fail (g_task_is_valid (result, file), FALSE);
measure_result = g_task_propagate_pointer (G_TASK (result), error);
if (measure_result == NULL)
return FALSE;
if (disk_usage)
*disk_usage = measure_result->disk_usage;
if (num_dirs)
*num_dirs = measure_result->num_dirs;
if (num_files)
*num_files = measure_result->num_files;
g_free (measure_result);
return TRUE;
}
/**
* g_file_measure_disk_usage:
* @file: a #GFile
* @flags: #GFileMeasureFlags
* @cancellable: (nullable): optional #GCancellable
* @progress_callback: (nullable): a #GFileMeasureProgressCallback
* @progress_data: user_data for @progress_callback
* @disk_usage: (out) (optional): the number of bytes of disk space used
* @num_dirs: (out) (optional): the number of directories encountered
* @num_files: (out) (optional): the number of non-directories encountered
* @error: (nullable): %NULL, or a pointer to a %NULL #GError pointer
*
* Recursively measures the disk usage of @file.
*
* This is essentially an analog of the 'du' command, but it also
* reports the number of directories and non-directory files encountered
* (including things like symbolic links).
*
* By default, errors are only reported against the toplevel file
* itself. Errors found while recursing are silently ignored, unless
* %G_FILE_MEASURE_REPORT_ANY_ERROR is given in @flags.
*
* The returned size, @disk_usage, is in bytes and should be formatted
* with g_format_size() in order to get something reasonable for showing
* in a user interface.
*
* @progress_callback and @progress_data can be given to request
* periodic progress updates while scanning. See the documentation for
* #GFileMeasureProgressCallback for information about when and how the
* callback will be invoked.
*
* Returns: %TRUE if successful, with the out parameters set.
* %FALSE otherwise, with @error set.
*
* Since: 2.38
**/
gboolean
g_file_measure_disk_usage (GFile *file,
GFileMeasureFlags flags,
GCancellable *cancellable,
GFileMeasureProgressCallback progress_callback,
gpointer progress_data,
guint64 *disk_usage,
guint64 *num_dirs,
guint64 *num_files,
GError **error)
{
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
return G_FILE_GET_IFACE (file)->measure_disk_usage (file, flags, cancellable,
progress_callback, progress_data,
disk_usage, num_dirs, num_files,
error);
}
/**
* g_file_measure_disk_usage_async:
* @file: a #GFile
* @flags: #GFileMeasureFlags
* @io_priority: the [I/O priority][io-priority] of the request
* @cancellable: (nullable): optional #GCancellable
* @progress_callback: (nullable): a #GFileMeasureProgressCallback
* @progress_data: user_data for @progress_callback
* @callback: (nullable): a #GAsyncReadyCallback to call when complete
* @user_data: the data to pass to callback function
*
* Recursively measures the disk usage of @file.
*
* This is the asynchronous version of g_file_measure_disk_usage(). See
* there for more information.
*
* Since: 2.38
**/
void
g_file_measure_disk_usage_async (GFile *file,
GFileMeasureFlags flags,
gint io_priority,
GCancellable *cancellable,
GFileMeasureProgressCallback progress_callback,
gpointer progress_data,
GAsyncReadyCallback callback,
gpointer user_data)
{
g_return_if_fail (G_IS_FILE (file));
g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
G_FILE_GET_IFACE (file)->measure_disk_usage_async (file, flags, io_priority, cancellable,
progress_callback, progress_data,
callback, user_data);
}
/**
* g_file_measure_disk_usage_finish:
* @file: a #GFile
* @result: the #GAsyncResult passed to your #GAsyncReadyCallback
* @disk_usage: (out) (optional): the number of bytes of disk space used
* @num_dirs: (out) (optional): the number of directories encountered
* @num_files: (out) (optional): the number of non-directories encountered
* @error: (nullable): %NULL, or a pointer to a %NULL #GError pointer
*
* Collects the results from an earlier call to
* g_file_measure_disk_usage_async(). See g_file_measure_disk_usage() for
* more information.
*
* Returns: %TRUE if successful, with the out parameters set.
* %FALSE otherwise, with @error set.
*
* Since: 2.38
**/
gboolean
g_file_measure_disk_usage_finish (GFile *file,
GAsyncResult *result,
guint64 *disk_usage,
guint64 *num_dirs,
guint64 *num_files,
GError **error)
{
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (error == NULL || *error == NULL, FALSE);
return G_FILE_GET_IFACE (file)->measure_disk_usage_finish (file, result, disk_usage, num_dirs, num_files, error);
}
/**
* g_file_start_mountable:
* @file: input #GFile
* @flags: flags affecting the operation
* @start_operation: (nullable): a #GMountOperation, or %NULL to avoid user interaction
* @cancellable: (nullable): optional #GCancellable object, %NULL to ignore
* @callback: (nullable): a #GAsyncReadyCallback to call when the request is satisfied, or %NULL
* @user_data: the data to pass to callback function
*
* Starts a file of type #G_FILE_TYPE_MOUNTABLE.
* Using @start_operation, you can request callbacks when, for instance,
* passwords are needed during authentication.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_mount_mountable_finish() to get
* the result of the operation.
*
* Since: 2.22
*/
void
g_file_start_mountable (GFile *file,
GDriveStartFlags flags,
GMountOperation *start_operation,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
if (iface->start_mountable == NULL)
{
g_task_report_new_error (file, callback, user_data,
g_file_start_mountable,
G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return;
}
(* iface->start_mountable) (file,
flags,
start_operation,
cancellable,
callback,
user_data);
}
/**
* g_file_start_mountable_finish:
* @file: input #GFile
* @result: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes a start operation. See g_file_start_mountable() for details.
*
* Finish an asynchronous start operation that was started
* with g_file_start_mountable().
*
* Returns: %TRUE if the operation finished successfully. %FALSE
* otherwise.
*
* Since: 2.22
*/
gboolean
g_file_start_mountable_finish (GFile *file,
GAsyncResult *result,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
if (g_async_result_legacy_propagate_error (result, error))
return FALSE;
else if (g_async_result_is_tagged (result, g_file_start_mountable))
return g_task_propagate_boolean (G_TASK (result), error);
iface = G_FILE_GET_IFACE (file);
return (* iface->start_mountable_finish) (file, result, error);
}
/**
* g_file_stop_mountable:
* @file: input #GFile
* @flags: flags affecting the operation
* @mount_operation: (nullable): a #GMountOperation,
* or %NULL to avoid user interaction.
* @cancellable: (nullable): optional #GCancellable object,
* %NULL to ignore
* @callback: (nullable): a #GAsyncReadyCallback to call
* when the request is satisfied, or %NULL
* @user_data: the data to pass to callback function
*
* Stops a file of type #G_FILE_TYPE_MOUNTABLE.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_stop_mountable_finish() to get
* the result of the operation.
*
* Since: 2.22
*/
void
g_file_stop_mountable (GFile *file,
GMountUnmountFlags flags,
GMountOperation *mount_operation,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
if (iface->stop_mountable == NULL)
{
g_task_report_new_error (file, callback, user_data,
g_file_stop_mountable,
G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return;
}
(* iface->stop_mountable) (file,
flags,
mount_operation,
cancellable,
callback,
user_data);
}
/**
* g_file_stop_mountable_finish:
* @file: input #GFile
* @result: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes a stop operation, see g_file_stop_mountable() for details.
*
* Finish an asynchronous stop operation that was started
* with g_file_stop_mountable().
*
* Returns: %TRUE if the operation finished successfully.
* %FALSE otherwise.
*
* Since: 2.22
*/
gboolean
g_file_stop_mountable_finish (GFile *file,
GAsyncResult *result,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
if (g_async_result_legacy_propagate_error (result, error))
return FALSE;
else if (g_async_result_is_tagged (result, g_file_stop_mountable))
return g_task_propagate_boolean (G_TASK (result), error);
iface = G_FILE_GET_IFACE (file);
return (* iface->stop_mountable_finish) (file, result, error);
}
/**
* g_file_poll_mountable:
* @file: input #GFile
* @cancellable: optional #GCancellable object, %NULL to ignore
* @callback: (nullable): a #GAsyncReadyCallback to call
* when the request is satisfied, or %NULL
* @user_data: the data to pass to callback function
*
* Polls a file of type #G_FILE_TYPE_MOUNTABLE.
*
* If @cancellable is not %NULL, then the operation can be cancelled by
* triggering the cancellable object from another thread. If the operation
* was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
*
* When the operation is finished, @callback will be called.
* You can then call g_file_mount_mountable_finish() to get
* the result of the operation.
*
* Since: 2.22
*/
void
g_file_poll_mountable (GFile *file,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GFileIface *iface;
g_return_if_fail (G_IS_FILE (file));
iface = G_FILE_GET_IFACE (file);
if (iface->poll_mountable == NULL)
{
g_task_report_new_error (file, callback, user_data,
g_file_poll_mountable,
G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("Operation not supported"));
return;
}
(* iface->poll_mountable) (file,
cancellable,
callback,
user_data);
}
/**
* g_file_poll_mountable_finish:
* @file: input #GFile
* @result: a #GAsyncResult
* @error: a #GError, or %NULL
*
* Finishes a poll operation. See g_file_poll_mountable() for details.
*
* Finish an asynchronous poll operation that was polled
* with g_file_poll_mountable().
*
* Returns: %TRUE if the operation finished successfully. %FALSE
* otherwise.
*
* Since: 2.22
*/
gboolean
g_file_poll_mountable_finish (GFile *file,
GAsyncResult *result,
GError **error)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
if (g_async_result_legacy_propagate_error (result, error))
return FALSE;
else if (g_async_result_is_tagged (result, g_file_poll_mountable))
return g_task_propagate_boolean (G_TASK (result), error);
iface = G_FILE_GET_IFACE (file);
return (* iface->poll_mountable_finish) (file, result, error);
}
/**
* g_file_supports_thread_contexts:
* @file: a #GFile
*
* Checks if @file supports
* [thread-default contexts][g-main-context-push-thread-default-context].
* If this returns %FALSE, you cannot perform asynchronous operations on
* @file in a thread that has a thread-default context.
*
* Returns: Whether or not @file supports thread-default contexts.
*
* Since: 2.22
*/
gboolean
g_file_supports_thread_contexts (GFile *file)
{
GFileIface *iface;
g_return_val_if_fail (G_IS_FILE (file), FALSE);
iface = G_FILE_GET_IFACE (file);
return iface->supports_thread_contexts;
}
/**
* g_file_load_bytes:
* @file: a #GFile
* @cancellable: (nullable): a #GCancellable or %NULL
* @etag_out: (out) (nullable) (optional): a location to place the current
* entity tag for the file, or %NULL if the entity tag is not needed
* @error: a location for a #GError or %NULL
*
* Loads the contents of @file and returns it as #GBytes.
*
* If @file is a resource:// based URI, the resulting bytes will reference the
* embedded resource instead of a copy. Otherwise, this is equivalent to calling
* g_file_load_contents() and g_bytes_new_take().
*
* For resources, @etag_out will be set to %NULL.
*
* The data contained in the resulting #GBytes is always zero-terminated, but
* this is not included in the #GBytes length. The resulting #GBytes should be
* freed with g_bytes_unref() when no longer in use.
*
* Returns: (transfer full): a #GBytes or %NULL and @error is set
*
* Since: 2.56
*/
GBytes *
g_file_load_bytes (GFile *file,
GCancellable *cancellable,
gchar **etag_out,
GError **error)
{
gchar *contents;
gsize len;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
if (etag_out != NULL)
*etag_out = NULL;
if (g_file_has_uri_scheme (file, "resource"))
{
GBytes *bytes;
gchar *uri, *unescaped;
uri = g_file_get_uri (file);
unescaped = g_uri_unescape_string (uri + strlen ("resource://"), NULL);
g_free (uri);
bytes = g_resources_lookup_data (unescaped, G_RESOURCE_LOOKUP_FLAGS_NONE, error);
g_free (unescaped);
return bytes;
}
/* contents is guaranteed to be \0 terminated */
if (g_file_load_contents (file, cancellable, &contents, &len, etag_out, error))
return g_bytes_new_take (g_steal_pointer (&contents), len);
return NULL;
}
static void
g_file_load_bytes_cb (GObject *object,
GAsyncResult *result,
gpointer user_data)
{
GFile *file = G_FILE (object);
GTask *task = user_data;
GError *error = NULL;
gchar *etag = NULL;
gchar *contents = NULL;
gsize len = 0;
g_file_load_contents_finish (file, result, &contents, &len, &etag, &error);
g_task_set_task_data (task, g_steal_pointer (&etag), g_free);
if (error != NULL)
g_task_return_error (task, g_steal_pointer (&error));
else
g_task_return_pointer (task,
g_bytes_new_take (g_steal_pointer (&contents), len),
(GDestroyNotify)g_bytes_unref);
g_object_unref (task);
}
/**
* g_file_load_bytes_async:
* @file: a #GFile
* @cancellable: (nullable): a #GCancellable or %NULL
* @callback: (scope async): a #GAsyncReadyCallback to call when the
* request is satisfied
* @user_data: (closure): the data to pass to callback function
*
* Asynchronously loads the contents of @file as #GBytes.
*
* If @file is a resource:// based URI, the resulting bytes will reference the
* embedded resource instead of a copy. Otherwise, this is equivalent to calling
* g_file_load_contents_async() and g_bytes_new_take().
*
* @callback should call g_file_load_bytes_finish() to get the result of this
* asynchronous operation.
*
* See g_file_load_bytes() for more information.
*
* Since: 2.56
*/
void
g_file_load_bytes_async (GFile *file,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GError *error = NULL;
GBytes *bytes;
GTask *task;
g_return_if_fail (G_IS_FILE (file));
g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
task = g_task_new (file, cancellable, callback, user_data);
g_task_set_source_tag (task, g_file_load_bytes_async);
if (!g_file_has_uri_scheme (file, "resource"))
{
g_file_load_contents_async (file,
cancellable,
g_file_load_bytes_cb,
g_steal_pointer (&task));
return;
}
bytes = g_file_load_bytes (file, cancellable, NULL, &error);
if (bytes == NULL)
g_task_return_error (task, g_steal_pointer (&error));
else
g_task_return_pointer (task,
g_steal_pointer (&bytes),
(GDestroyNotify)g_bytes_unref);
g_object_unref (task);
}
/**
* g_file_load_bytes_finish:
* @file: a #GFile
* @result: a #GAsyncResult provided to the callback
* @etag_out: (out) (nullable) (optional): a location to place the current
* entity tag for the file, or %NULL if the entity tag is not needed
* @error: a location for a #GError, or %NULL
*
* Completes an asynchronous request to g_file_load_bytes_async().
*
* For resources, @etag_out will be set to %NULL.
*
* The data contained in the resulting #GBytes is always zero-terminated, but
* this is not included in the #GBytes length. The resulting #GBytes should be
* freed with g_bytes_unref() when no longer in use.
*
* See g_file_load_bytes() for more information.
*
* Returns: (transfer full): a #GBytes or %NULL and @error is set
*
* Since: 2.56
*/
GBytes *
g_file_load_bytes_finish (GFile *file,
GAsyncResult *result,
gchar **etag_out,
GError **error)
{
GBytes *bytes;
g_return_val_if_fail (G_IS_FILE (file), NULL);
g_return_val_if_fail (G_IS_TASK (result), NULL);
g_return_val_if_fail (g_task_is_valid (G_TASK (result), file), NULL);
g_return_val_if_fail (error == NULL || *error == NULL, NULL);
bytes = g_task_propagate_pointer (G_TASK (result), error);
if (etag_out != NULL)
*etag_out = g_strdup (g_task_get_task_data (G_TASK (result)));
return bytes;
}
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