/* -*- 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 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, write to the * Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307, USA. * * Author: Alexander Larsson */ #include "config.h" #ifdef HAVE_SPLICE #include #include #include #include #endif #include #include #ifdef HAVE_PWD_H #include #endif #include "gfile.h" #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 "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(). * * * 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. * * Some #GFile operations do not have synchronous analogs, as they may * take a very long time to finish, and blocking may leave an application * unusable. 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 tag * 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 * 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_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); 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->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; } /** * g_file_is_native: * @file: input #GFile * * Checks to see if a file is native to the platform. * * A native file s 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. * * This call does no blocking I/O. * * Returns: a string containing the URI scheme for the given * #GFile. 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: * @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: 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: * @file: input #GFile * * Gets the local pathname for #GFile, if one exists. * * This call does no blocking I/O. * * Returns: 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); } /** * 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. * 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. * * 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 equality of two given #GFiles. * * 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. * %FALSE if either is not a #GFile. */ 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 (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: (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: (allow-none): 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 a child of @parent. * * Returns: %TRUE if @file is a 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: 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. * * 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 @files'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: * @parent: input #GFile * @descendant: input #GFile * * Gets the path for @descendant relative to @parent. * * This call does no blocking I/O. * * Returns: 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: 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: (allow-none): 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 * of the request * @cancellable: (allow-none): 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: (allow-none): 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 * 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: (allow-none): 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: (allow-none): 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 * of the request * @cancellable: (allow-none): 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: (allow-none): 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 * of the request * @cancellable: (allow-none): 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: (allow-none): optional #GCancellable object, * %NULL to ignore * @error: a #GError * * Gets a #GMount for the #GFile. * * If the #GFileIface for @file does not have a mount (e.g. * possibly a remote share), @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 * of the request * @cancellable: (allow-none): 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: (allow-none): 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: (allow-none): 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: (allow-none): 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: (allow-none): an optional entity tag * for the current #GFile, or #NULL to ignore * @make_backup: %TRUE if a backup should be created * @flags: a set of #GFileCreateFlags * @cancellable: (allow-none): 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, 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: (allow-none): 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: (allow-none): 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: (allow-none): an optional entity tag * for the current #GFile, or #NULL to ignore * @make_backup: %TRUE if a backup should be created * @flags: a set of #GFileCreateFlags * @cancellable: (allow-none): 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 * of the request * @cancellable: (allow-none): 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 * of the request * @cancellable: (allow-none): 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 * of the request * @cancellable: (allow-none): 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: (allow-none): an entity tag * 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 * of the request * @cancellable: (allow-none): 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 * of the request * @cancellable: (allow-none): 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 * of the request * @cancellable: (allow-none): 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: (allow-none): an entity tag * 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 * of the request * @cancellable: (allow-none): 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_error_free (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 GInputStream * open_source_for_copy (GFile *source, GFile *destination, GFileCopyFlags flags, GCancellable *cancellable, GError **error) { GError *my_error; GInputStream *in; GFileInfo *info; GFileType file_type; my_error = NULL; in = (GInputStream *)g_file_read (source, cancellable, &my_error); if (in != NULL) return in; /* 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 as_move, gboolean skip_perms) { if (skip_perms && strcmp(info->name, "unix::mode") == 0) return FALSE; if (as_move) return info->flags & G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED; return info->flags & G_FILE_ATTRIBUTE_INFO_COPY_WITH_FILE; } static char * build_attribute_list_for_copy (GFileAttributeInfoList *attributes, GFileAttributeInfoList *namespaces, gboolean as_move, gboolean skip_perms) { GString *s; gboolean first; int i; first = TRUE; s = g_string_new (""); if (attributes) { for (i = 0; i < attributes->n_infos; i++) { if (should_copy (&attributes->infos[i], as_move, 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], as_move, FALSE)) { if (first) first = FALSE; else g_string_append_c (s, ','); g_string_append (s, namespaces->infos[i].name); g_string_append (s, "::*"); } } } return g_string_free (s, FALSE); } /** * g_file_copy_attributes: * @source: a #GFile with attributes * @destination: a #GFile to copy attributes to * @flags: a set of #GFileCopyFlags * @cancellable: (allow-none): 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) { GFileAttributeInfoList *attributes, *namespaces; char *attrs_to_read; gboolean res; GFileInfo *info; gboolean as_move; gboolean source_nofollow_symlinks; gboolean skip_perms; as_move = flags & G_FILE_COPY_ALL_METADATA; source_nofollow_symlinks = flags & G_FILE_COPY_NOFOLLOW_SYMLINKS; skip_perms = (flags & G_FILE_COPY_TARGET_DEFAULT_PERMS) != 0; /* Ignore errors here, if the target supports no attributes there is * nothing to copy */ attributes = g_file_query_settable_attributes (destination, cancellable, NULL); namespaces = g_file_query_writable_namespaces (destination, cancellable, NULL); if (attributes == NULL && namespaces == NULL) return TRUE; attrs_to_read = build_attribute_list_for_copy (attributes, namespaces, as_move, skip_perms); /* 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); } g_file_attribute_info_list_unref (attributes); g_file_attribute_info_list_unref (namespaces); return res; } 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, n_written; goffset current_size; char buffer[1024*64], *p; 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; current_size = 0; res = TRUE; while (TRUE) { n_read = g_input_stream_read (in, buffer, sizeof (buffer), cancellable, error); if (n_read == -1) { res = FALSE; break; } if (n_read == 0) break; current_size += n_read; p = buffer; while (n_read > 0) { n_written = g_output_stream_write (out, p, n_read, cancellable, error); if (n_written == -1) { res = FALSE; break; } p += n_written; n_read -= n_written; } if (!res) break; if (progress_callback) progress_callback (current_size, total_size, progress_callback_data); } /* 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) 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]; 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 (pipe (buffer) != 0) { g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, "Pipe creation failed"); return FALSE; } 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, 1024*64, &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); out: close (buffer[0]); close (buffer[1]); return res; } #endif static gboolean file_copy_fallback (GFile *source, GFile *destination, GFileCopyFlags flags, GCancellable *cancellable, GFileProgressCallback progress_callback, gpointer progress_callback_data, GError **error) { GInputStream *in; GOutputStream *out; GFileInfo *info; const char *target; gboolean result; #ifdef HAVE_SPLICE gboolean fallback = TRUE; #endif /* 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 == NULL) return FALSE; /* 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)) { g_object_unref (info); return FALSE; } g_object_unref (info); goto copied_file; } /* ... else fall back on a regular file copy */ g_object_unref (info); } /* 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")); g_object_unref (info); return FALSE; } /* Everything else should just fall back on a regular copy. */ else g_object_unref (info); in = open_source_for_copy (source, destination, flags, cancellable, error); if (in == NULL) return FALSE; if (flags & G_FILE_COPY_OVERWRITE) { out = (GOutputStream *)g_file_replace (destination, NULL, flags & G_FILE_COPY_BACKUP, G_FILE_CREATE_REPLACE_DESTINATION, cancellable, error); } else { out = (GOutputStream *)g_file_create (destination, 0, cancellable, error); } if (out == NULL) { g_object_unref (in); return FALSE; } #ifdef HAVE_SPLICE if (G_IS_FILE_DESCRIPTOR_BASED (in) && G_IS_FILE_DESCRIPTOR_BASED (out)) { GError *splice_err = NULL; result = splice_stream_with_progress (in, out, cancellable, progress_callback, progress_callback_data, &splice_err); if (result || !g_error_matches (splice_err, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED)) { fallback = FALSE; if (!result) g_propagate_error (error, splice_err); } else g_clear_error (&splice_err); } if (fallback) #endif result = copy_stream_with_progress (in, out, source, cancellable, progress_callback, progress_callback_data, error); /* Don't care about errors in source here */ g_input_stream_close (in, cancellable, NULL); /* But write errors on close are bad! */ if (!g_output_stream_close (out, cancellable, result ? error : NULL)) result = FALSE; g_object_unref (in); g_object_unref (out); if (result == FALSE) return FALSE; copied_file: /* Ignore errors here. Failure to copy metadata is not a hard error */ g_file_copy_attributes (source, destination, flags, cancellable, NULL); return TRUE; } /** * g_file_copy: * @source: input #GFile * @destination: destination #GFile * @flags: set of #GFileCopyFlags * @cancellable: (allow-none): optional #GCancellable object, * %NULL to ignore * @progress_callback: (allow-none) (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 @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: (skip) * @source: input #GFile * @destination: destination #GFile * @flags: set of #GFileCopyFlags * @io_priority: the I/O priority * of the request * @cancellable: (allow-none): optional #GCancellable object, * %NULL to ignore * @progress_callback: (allow-none): 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 * @callback: a #GAsyncReadyCallback to call when the request is satisfied * @user_data: 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(), however the callback will run in the main loop, * not in the thread that is doing the I/O operation. * * 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: (allow-none): optional #GCancellable object, * %NULL to ignore * @progress_callback: (allow-none) (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 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 @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; } } /* 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; } } } 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; 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: (allow-none): 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_with_parents: * @file: input #GFile * @cancellable: (allow-none): 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; g_file_make_directory (file, cancellable, &my_error); if (my_error == NULL || my_error->code != G_IO_ERROR_NOT_FOUND) { if (my_error) g_propagate_error (error, my_error); return my_error == NULL; } work_file = g_object_ref (file); while (my_error != NULL && my_error->code == 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); g_object_unref (work_file); work_file = g_object_ref (parent_file); if (my_error != NULL && my_error->code == G_IO_ERROR_NOT_FOUND) list = g_list_prepend (list, parent_file); /* Transfer ownership of ref */ else g_object_unref (parent_file); } for (l = list; my_error == NULL && l; l = l->next) { g_file_make_directory ((GFile *) l->data, cancellable, &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); } 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: a string with the path for the target of the new symlink * @cancellable: (allow-none): 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, _("Operation not supported")); return FALSE; } return (* iface->make_symbolic_link) (file, symlink_value, cancellable, error); } /** * g_file_delete: * @file: input #GFile * @cancellable: (allow-none): 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 @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 * of the request * @cancellable: (allow-none): 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 * 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: (allow-none): 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. * * 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 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_set_display_name: * @file: input #GFile * @display_name: a string * @cancellable: (allow-none): 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 * of the request * @cancellable: (allow-none): 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: (allow-none): 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: (allow-none): 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) { 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_set_attribute: * @file: input #GFile * @attribute: a string containing the attribute's name * @type: The type of the attribute * @value_p: (allow-none): a pointer to the value (or the pointer * itself if the type is a pointer type) * @flags: a set of #GFileQueryInfoFlags * @cancellable: (allow-none): optional #GCancellable object, * %NULL to ignore * @error: a #GError, or %NULL * * Sets an attribute in the file with attribute name @attribute to @value. * * Some attributes can be unset by setting @attribute 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: (allow-none): 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 * of the request * @cancellable: (allow-none): 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: (allow-none): 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: (allow-none): 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: (allow-none): 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: (allow-none): 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: (allow-none): 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: (allow-none): 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: (allow-none): a #GMountOperation, * or %NULL to avoid user interaction * @cancellable: (allow-none): optional #GCancellable object, * %NULL to ignore * @callback: (scope async) (allow-none): 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: (allow-none): optional #GCancellable object, * %NULL to ignore * @callback: (scope async) (allow-none): 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: (allow-none): a #GMountOperation, * or %NULL to avoid user interaction * @cancellable: (allow-none): optional #GCancellable object, * %NULL to ignore * @callback: (scope async) (allow-none): 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: (allow-none): optional #GCancellable object, * %NULL to ignore * @callback: (scope async) (allow-none): 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: (allow-none): a #GMountOperation, * or %NULL to avoid user interaction * @cancellable: (allow-none): optional #GCancellable object, * %NULL to ignore * @callback: (scope async) (allow-none): 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: (allow-none): 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: (allow-none): 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: (allow-none): 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_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_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_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) { GFileIface *iface; GFileInputStream *stream; GError *error = NULL; iface = G_FILE_GET_IFACE (object); if (iface->read_fn == NULL) { g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, _("Operation not supported")); return; } stream = iface->read_fn (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_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) { GFileIface *iface; GFileCreateFlags *data = task_data; GFileOutputStream *stream; GError *error = NULL; iface = G_FILE_GET_IFACE (source_object); stream = iface->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_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) { GFileIface *iface; GFileCreateFlags *data = task_data; GFileOutputStream *stream; GError *error = NULL; iface = G_FILE_GET_IFACE (source_object); stream = iface->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_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) { GFileIface *iface; GFileOutputStream *stream; ReplaceAsyncData *data = task_data; GError *error = NULL; iface = G_FILE_GET_IFACE (source_object); stream = iface->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_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) { GFile *file = object; GFileIface *iface; GError *error = NULL; iface = G_FILE_GET_IFACE (object); if (iface->delete_file (file, 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_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 open_readwrite_async_thread (GTask *task, gpointer object, gpointer task_data, GCancellable *cancellable) { GFileIface *iface; GFileIOStream *stream; GError *error = NULL; iface = G_FILE_GET_IFACE (object); if (iface->open_readwrite == NULL) { g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, _("Operation not supported")); return; } stream = iface->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_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) { GFileIface *iface; GFileCreateFlags *data = task_data; GFileIOStream *stream; GError *error = NULL; iface = G_FILE_GET_IFACE (object); if (iface->create_readwrite == NULL) { g_task_return_new_error (task, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, _("Operation not supported")); return; } stream = iface->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_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) { GFileIface *iface; GFileIOStream *stream; GError *error = NULL; ReplaceRWAsyncData *data = task_data; iface = G_FILE_GET_IFACE (object); stream = iface->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_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_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_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_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_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: 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) (allow-none): 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); } 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: 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. * * 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: a command line string * @cwd: 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: (allow-none): a #GMountOperation * or %NULL to avoid user interaction * @cancellable: (allow-none): optional #GCancellable object, * %NULL to ignore * @callback: (allow-none): 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; } info = g_file_query_info (file, G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE, 0, cancellable, error); if (info == NULL) return NULL; appinfo = NULL; content_type = g_file_info_get_content_type (info); 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; } #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) (allow-none): a location to place the length of the contents of the file, * or %NULL if the length is not needed * @etag_out: (out) (allow-none): 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 @content 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) { /* EOF, close the file */ g_task_return_error (data->task, error); g_input_stream_close_async (stream, 0, g_task_get_cancellable (data->task), load_contents_close_callback, data); } 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: a #GFileReadMoreCallback to receive partial data * and to specify whether further data should be read * @callback: 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_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) (allow-none): a location to place the length of the contents of the file, * or %NULL if the length is not needed * @etag_out: (out) (allow-none): 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 @content 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) (allow-none): a location to place the length of the contents of the file, * or %NULL if the length is not needed * @etag_out: (out) (allow-none): 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 @content 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: (allow-none): the old entity tag * for the document, or %NULL * @make_backup: %TRUE if a backup should be created * @flags: a set of #GFileCreateFlags * @new_etag: (allow-none) (out): a location to a new entity tag * 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. * * 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; const char *content; gsize length; gsize pos; char *etag; gboolean failed; } ReplaceContentsData; static void replace_contents_data_free (ReplaceContentsData *data) { 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); g_object_unref (stream); 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) { data->pos += write_size; if (data->pos >= data->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, data->content + data->pos, data->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) { g_output_stream_write_async (G_OUTPUT_STREAM (stream), data->content + data->pos, data->length - data->pos, 0, g_task_get_cancellable (data->task), replace_contents_write_callback, data); } 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: (allow-none): a new entity tag 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. */ 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) { ReplaceContentsData *data; g_return_if_fail (G_IS_FILE (file)); g_return_if_fail (contents != NULL); data = g_new0 (ReplaceContentsData, 1); data->content = contents; data->length = length; data->task = g_task_new (file, cancellable, callback, user_data); 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) (allow-none): a location of a new entity tag * 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; } /** * g_file_start_mountable: * @file: input #GFile * @flags: flags affecting the operation * @start_operation: (allow-none): a #GMountOperation, or %NULL to avoid user interaction * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore * @callback: (allow-none): 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: (allow-none): a #GMountOperation, * or %NULL to avoid user interaction. * @cancellable: (allow-none): optional #GCancellable object, * %NULL to ignore * @callback: (allow-none): 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 an 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: (allow-none): 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. 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; }