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glib/gio/glocalfile.c
Alexander Larsson 2c362b7f9e Rename all struct members named: read, write, close, truncate, or mount to 
2007-12-05  Alexander Larsson  <alexl@redhat.com>

        * gbufferedinputstream.c:
        * gbufferedoutputstream.c:
        * gdrive.[ch]:
        * gfile.[ch]:
        * gfileenumerator.[ch]:
        * gfileinputstream.c:
        * gfileoutputstream.[ch]:
        * gfilterinputstream.c:
        * gfilteroutputstream.c:
        * ginputstream.[ch]:
        * glocalfile.c:
        * glocalfileenumerator.c:
        * glocalfileinputstream.c:
        * glocalfileoutputstream.c:
        * gmemoryinputstream.c:
        * gmemoryoutputstream.c:
        * goutputstream.[ch]:
        * gseekable.[ch]:
        * gunixdrive.c:
        * gunixinputstream.c:
        * gunixoutputstream.c:
	Rename all struct members named:
	read, write, close, truncate, or mount
	to foo_fn, as these are reserved names
	and could be defined as macros in libc.
	(#501645)


svn path=/trunk/; revision=6048
2007-12-05 10:38:03 +00:00

1831 lines
44 KiB
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/* 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 <alexl@redhat.com>
*/
#include <config.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <unistd.h>
#if HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif
#if HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif
#if HAVE_SYS_VFS_H
#include <sys/vfs.h>
#elif HAVE_SYS_MOUNT_H
#if HAVE_SYS_PARAM_H
#include <sys/param.h>
#endif
#include <sys/mount.h>
#endif
#if defined(HAVE_STATFS) && defined(HAVE_STATVFS)
/* Some systems have both statfs and statvfs, pick the
most "native" for these */
# if defined(sun) && defined(__SVR4)
/* on solaris, statfs doesn't even have the
f_bavail field */
# define USE_STATVFS
# else
/* at least on linux, statfs is the actual syscall */
# define USE_STATFS
# endif
#elif defined(HAVE_STATFS)
# define USE_STATFS
#elif defined(HAVE_STATVFS)
# define USE_STATVFS
#endif
#include "glocalfile.h"
#include "glocalfileinfo.h"
#include "glocalfileenumerator.h"
#include "glocalfileinputstream.h"
#include "glocalfileoutputstream.h"
#include "glocaldirectorymonitor.h"
#include "glocalfilemonitor.h"
#include "gvolumeprivate.h"
#include <glib/gstdio.h>
#include "glibintl.h"
#include "gioalias.h"
static void g_local_file_file_iface_init (GFileIface *iface);
static GFileAttributeInfoList *local_writable_attributes = NULL;
static GFileAttributeInfoList *local_writable_namespaces = NULL;
struct _GLocalFile
{
GObject parent_instance;
char *filename;
};
#define g_local_file_get_type _g_local_file_get_type
G_DEFINE_TYPE_WITH_CODE (GLocalFile, g_local_file, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_FILE,
g_local_file_file_iface_init))
static char * find_mountpoint_for (const char *file, dev_t dev);
static void
g_local_file_finalize (GObject *object)
{
GLocalFile *local;
local = G_LOCAL_FILE (object);
g_free (local->filename);
if (G_OBJECT_CLASS (g_local_file_parent_class)->finalize)
(*G_OBJECT_CLASS (g_local_file_parent_class)->finalize) (object);
}
static void
g_local_file_class_init (GLocalFileClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GFileAttributeInfoList *list;
gobject_class->finalize = g_local_file_finalize;
/* Set up attribute lists */
/* Writable attributes: */
list = g_file_attribute_info_list_new ();
g_file_attribute_info_list_add (list,
G_FILE_ATTRIBUTE_UNIX_MODE,
G_FILE_ATTRIBUTE_TYPE_UINT32,
G_FILE_ATTRIBUTE_FLAGS_COPY_WHEN_MOVED);
#ifdef HAVE_CHOWN
g_file_attribute_info_list_add (list,
G_FILE_ATTRIBUTE_UNIX_UID,
G_FILE_ATTRIBUTE_TYPE_UINT32,
G_FILE_ATTRIBUTE_FLAGS_COPY_WHEN_MOVED);
g_file_attribute_info_list_add (list,
G_FILE_ATTRIBUTE_UNIX_GID,
G_FILE_ATTRIBUTE_TYPE_UINT32,
G_FILE_ATTRIBUTE_FLAGS_COPY_WHEN_MOVED);
#endif
#ifdef HAVE_SYMLINK
g_file_attribute_info_list_add (list,
G_FILE_ATTRIBUTE_STD_SYMLINK_TARGET,
G_FILE_ATTRIBUTE_TYPE_BYTE_STRING,
0);
#endif
#ifdef HAVE_UTIMES
g_file_attribute_info_list_add (list,
G_FILE_ATTRIBUTE_TIME_MODIFIED,
G_FILE_ATTRIBUTE_TYPE_UINT64,
G_FILE_ATTRIBUTE_FLAGS_COPY_WHEN_MOVED);
g_file_attribute_info_list_add (list,
G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC,
G_FILE_ATTRIBUTE_TYPE_UINT32,
G_FILE_ATTRIBUTE_FLAGS_COPY_WHEN_MOVED);
g_file_attribute_info_list_add (list,
G_FILE_ATTRIBUTE_TIME_ACCESS,
G_FILE_ATTRIBUTE_TYPE_UINT64,
G_FILE_ATTRIBUTE_FLAGS_COPY_WHEN_MOVED);
g_file_attribute_info_list_add (list,
G_FILE_ATTRIBUTE_TIME_ACCESS_USEC,
G_FILE_ATTRIBUTE_TYPE_UINT32,
G_FILE_ATTRIBUTE_FLAGS_COPY_WHEN_MOVED);
#endif
local_writable_attributes = list;
/* Writable namespaces: */
list = g_file_attribute_info_list_new ();
#ifdef HAVE_XATTR
g_file_attribute_info_list_add (list,
"xattr",
G_FILE_ATTRIBUTE_TYPE_STRING,
G_FILE_ATTRIBUTE_FLAGS_COPY_WITH_FILE |
G_FILE_ATTRIBUTE_FLAGS_COPY_WHEN_MOVED);
g_file_attribute_info_list_add (list,
"xattr_sys",
G_FILE_ATTRIBUTE_TYPE_STRING,
G_FILE_ATTRIBUTE_FLAGS_COPY_WHEN_MOVED);
#endif
local_writable_namespaces = list;
}
static void
g_local_file_init (GLocalFile *local)
{
}
static char *
canonicalize_filename (const char *filename)
{
char *canon, *start, *p, *q;
char *cwd;
if (!g_path_is_absolute (filename))
{
cwd = g_get_current_dir ();
canon = g_build_filename (cwd, filename, NULL);
g_free (cwd);
}
else
canon = g_strdup (filename);
start = (char *)g_path_skip_root (canon);
p = start;
while (*p != 0)
{
if (p[0] == '.' && (p[1] == 0 || G_IS_DIR_SEPARATOR (p[1])))
{
memmove (p, p+1, strlen (p+1)+1);
}
else if (p[0] == '.' && p[1] == '.' && (p[2] == 0 || G_IS_DIR_SEPARATOR (p[2])))
{
q = p + 2;
/* Skip previous separator */
p = p - 2;
if (p < start)
p = start;
while (p > start && !G_IS_DIR_SEPARATOR (*p))
p--;
if (G_IS_DIR_SEPARATOR (*p))
*p++ = G_DIR_SEPARATOR;
memmove (p, q, strlen (q)+1);
}
else
{
/* Skip until next separator */
while (*p != 0 && !G_IS_DIR_SEPARATOR (*p))
p++;
if (*p != 0)
{
/* Canonicalize one separator */
*p++ = G_DIR_SEPARATOR;
}
}
/* Remove additional separators */
q = p;
while (*q && G_IS_DIR_SEPARATOR (*q))
q++;
if (p != q)
memmove (p, q, strlen (q)+1);
}
/* Remove trailing slashes */
if (p > start && G_IS_DIR_SEPARATOR (*(p-1)))
*(p-1) = 0;
return canon;
}
/**
* _g_local_file_new:
* @filename: filename of the file to create.
*
* Returns: new local #GFile.
**/
GFile *
_g_local_file_new (const char *filename)
{
GLocalFile *local;
local = g_object_new (G_TYPE_LOCAL_FILE, NULL);
local->filename = canonicalize_filename (filename);
return G_FILE (local);
}
static gboolean
g_local_file_is_native (GFile *file)
{
return TRUE;
}
static gboolean
g_local_file_has_uri_scheme (GFile *file,
const char *uri_scheme)
{
return g_ascii_strcasecmp (uri_scheme, "file") == 0;
}
static char *
g_local_file_get_uri_scheme (GFile *file)
{
return g_strdup ("file");
}
static char *
g_local_file_get_basename (GFile *file)
{
return g_path_get_basename (G_LOCAL_FILE (file)->filename);
}
static char *
g_local_file_get_path (GFile *file)
{
return g_strdup (G_LOCAL_FILE (file)->filename);
}
static char *
g_local_file_get_uri (GFile *file)
{
return g_filename_to_uri (G_LOCAL_FILE (file)->filename, NULL, NULL);
}
static gboolean
get_filename_charset (const gchar **filename_charset)
{
const gchar **charsets;
gboolean is_utf8;
is_utf8 = g_get_filename_charsets (&charsets);
if (filename_charset)
*filename_charset = charsets[0];
return is_utf8;
}
static gboolean
name_is_valid_for_display (const char *string,
gboolean is_valid_utf8)
{
char c;
if (!is_valid_utf8 &&
!g_utf8_validate (string, -1, NULL))
return FALSE;
while ((c = *string++) != 0)
{
if (g_ascii_iscntrl(c))
return FALSE;
}
return TRUE;
}
static char *
g_local_file_get_parse_name (GFile *file)
{
const char *filename;
char *parse_name;
const gchar *charset;
char *utf8_filename;
char *roundtripped_filename;
gboolean free_utf8_filename;
gboolean is_valid_utf8;
filename = G_LOCAL_FILE (file)->filename;
if (get_filename_charset (&charset))
{
utf8_filename = (char *)filename;
free_utf8_filename = FALSE;
is_valid_utf8 = FALSE; /* Can't guarantee this */
}
else
{
utf8_filename = g_convert (filename, -1,
"UTF-8", charset, NULL, NULL, NULL);
free_utf8_filename = TRUE;
is_valid_utf8 = TRUE;
if (utf8_filename != NULL)
{
/* Make sure we can roundtrip: */
roundtripped_filename = g_convert (utf8_filename, -1,
charset, "UTF-8", NULL, NULL, NULL);
if (roundtripped_filename == NULL ||
strcmp (utf8_filename, roundtripped_filename) != 0)
{
g_free (utf8_filename);
utf8_filename = NULL;
}
}
}
if (utf8_filename != NULL &&
name_is_valid_for_display (utf8_filename, is_valid_utf8))
{
if (free_utf8_filename)
parse_name = utf8_filename;
else
parse_name = g_strdup (utf8_filename);
}
else
{
parse_name = g_filename_to_uri (filename, NULL, NULL);
if (free_utf8_filename)
g_free (utf8_filename);
}
return parse_name;
}
static GFile *
g_local_file_get_parent (GFile *file)
{
GLocalFile *local = G_LOCAL_FILE (file);
const char *non_root;
char *dirname;
GFile *parent;
/* Check for root */
non_root = g_path_skip_root (local->filename);
if (*non_root == 0)
return NULL;
dirname = g_path_get_dirname (local->filename);
parent = _g_local_file_new (dirname);
g_free (dirname);
return parent;
}
static GFile *
g_local_file_dup (GFile *file)
{
GLocalFile *local = G_LOCAL_FILE (file);
return _g_local_file_new (local->filename);
}
static guint
g_local_file_hash (GFile *file)
{
GLocalFile *local = G_LOCAL_FILE (file);
return g_str_hash (local->filename);
}
static gboolean
g_local_file_equal (GFile *file1,
GFile *file2)
{
GLocalFile *local1 = G_LOCAL_FILE (file1);
GLocalFile *local2 = G_LOCAL_FILE (file2);
return g_str_equal (local1->filename, local2->filename);
}
static const char *
match_prefix (const char *path,
const char *prefix)
{
int prefix_len;
prefix_len = strlen (prefix);
if (strncmp (path, prefix, prefix_len) != 0)
return NULL;
return path + prefix_len;
}
static gboolean
g_local_file_contains_file (GFile *parent,
GFile *descendant)
{
GLocalFile *parent_local = G_LOCAL_FILE (parent);
GLocalFile *descendant_local = G_LOCAL_FILE (descendant);
const char *remainder;
remainder = match_prefix (descendant_local->filename, parent_local->filename);
if (remainder != NULL && G_IS_DIR_SEPARATOR (*remainder))
return TRUE;
return FALSE;
}
static char *
g_local_file_get_relative_path (GFile *parent,
GFile *descendant)
{
GLocalFile *parent_local = G_LOCAL_FILE (parent);
GLocalFile *descendant_local = G_LOCAL_FILE (descendant);
const char *remainder;
remainder = match_prefix (descendant_local->filename, parent_local->filename);
if (remainder != NULL && G_IS_DIR_SEPARATOR (*remainder))
return g_strdup (remainder + 1);
return NULL;
}
static GFile *
g_local_file_resolve_relative_path (GFile *file,
const char *relative_path)
{
GLocalFile *local = G_LOCAL_FILE (file);
char *filename;
GFile *child;
if (g_path_is_absolute (relative_path))
return _g_local_file_new (relative_path);
filename = g_build_filename (local->filename, relative_path, NULL);
child = _g_local_file_new (filename);
g_free (filename);
return child;
}
static GFileEnumerator *
g_local_file_enumerate_children (GFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
return _g_local_file_enumerator_new (local->filename,
attributes, flags,
cancellable, error);
}
static GFile *
g_local_file_get_child_for_display_name (GFile *file,
const char *display_name,
GError **error)
{
GFile *parent, *new_file;
char *basename;
basename = g_filename_from_utf8 (display_name, -1, NULL, NULL, NULL);
if (basename == NULL)
{
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_INVALID_FILENAME,
_("Invalid filename %s"), display_name);
return NULL;
}
parent = g_file_get_parent (file);
new_file = g_file_get_child (file, basename);
g_object_unref (parent);
g_free (basename);
return new_file;
}
#ifdef USE_STATFS
static const char *
get_fs_type (long f_type)
{
/* filesystem ids taken from linux manpage */
switch (f_type)
{
case 0xadf5:
return "adfs";
case 0xADFF:
return "affs";
case 0x42465331:
return "befs";
case 0x1BADFACE:
return "bfs";
case 0xFF534D42:
return "cifs";
case 0x73757245:
return "coda";
case 0x012FF7B7:
return "coh";
case 0x28cd3d45:
return "cramfs";
case 0x1373:
return "devfs";
case 0x00414A53:
return "efs";
case 0x137D:
return "ext";
case 0xEF51:
return "ext2";
case 0xEF53:
return "ext3";
case 0x4244:
return "hfs";
case 0xF995E849:
return "hpfs";
case 0x958458f6:
return "hugetlbfs";
case 0x9660:
return "isofs";
case 0x72b6:
return "jffs2";
case 0x3153464a:
return "jfs";
case 0x137F:
return "minix";
case 0x138F:
return "minix2";
case 0x2468:
return "minix2";
case 0x2478:
return "minix22";
case 0x4d44:
return "msdos";
case 0x564c:
return "ncp";
case 0x6969:
return "nfs";
case 0x5346544e:
return "ntfs";
case 0x9fa1:
return "openprom";
case 0x9fa0:
return "proc";
case 0x002f:
return "qnx4";
case 0x52654973:
return "reiserfs";
case 0x7275:
return "romfs";
case 0x517B:
return "smb";
case 0x012FF7B6:
return "sysv2";
case 0x012FF7B5:
return "sysv4";
case 0x01021994:
return "tmpfs";
case 0x15013346:
return "udf";
case 0x00011954:
return "ufs";
case 0x9fa2:
return "usbdevice";
case 0xa501FCF5:
return "vxfs";
case 0x012FF7B4:
return "xenix";
case 0x58465342:
return "xfs";
case 0x012FD16D:
return "xiafs";
default:
return NULL;
}
}
#endif
G_LOCK_DEFINE_STATIC(mount_info_hash);
static GHashTable *mount_info_hash = NULL;
guint64 mount_info_hash_cache_time = 0;
typedef enum {
MOUNT_INFO_READONLY = 1<<0
} MountInfo;
static gboolean
device_equal (gconstpointer v1,
gconstpointer v2)
{
return *(dev_t *)v1 == * (dev_t *)v2;
}
static guint
device_hash (gconstpointer v)
{
return (guint) *(dev_t *)v;
}
static void
get_mount_info (GFileInfo *fs_info,
const char *path,
GFileAttributeMatcher *matcher)
{
struct stat buf;
gboolean got_info;
gpointer info_as_ptr;
guint mount_info;
char *mountpoint;
dev_t *dev;
GUnixMount *mount;
guint64 cache_time;
if (lstat (path, &buf) != 0)
return;
G_LOCK (mount_info_hash);
if (mount_info_hash == NULL)
mount_info_hash = g_hash_table_new_full (device_hash, device_equal,
g_free, NULL);
if (g_unix_mounts_changed_since (mount_info_hash_cache_time))
g_hash_table_remove_all (mount_info_hash);
got_info = g_hash_table_lookup_extended (mount_info_hash,
&buf.st_dev,
NULL,
&info_as_ptr);
G_UNLOCK (mount_info_hash);
mount_info = GPOINTER_TO_UINT (info_as_ptr);
if (!got_info)
{
mount_info = 0;
mountpoint = find_mountpoint_for (path, buf.st_dev);
if (mountpoint == NULL)
mountpoint = "/";
mount = g_get_unix_mount_at (mountpoint, &cache_time);
if (mount)
{
if (g_unix_mount_is_readonly (mount))
mount_info |= MOUNT_INFO_READONLY;
g_unix_mount_free (mount);
}
dev = g_new0 (dev_t, 1);
*dev = buf.st_dev;
G_LOCK (mount_info_hash);
mount_info_hash_cache_time = cache_time;
g_hash_table_insert (mount_info_hash, dev, GUINT_TO_POINTER (mount_info));
G_UNLOCK (mount_info_hash);
}
if (mount_info & MOUNT_INFO_READONLY)
g_file_info_set_attribute_boolean (fs_info, G_FILE_ATTRIBUTE_FS_READONLY, TRUE);
}
static GFileInfo *
g_local_file_query_filesystem_info (GFile *file,
const char *attributes,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
GFileInfo *info;
int statfs_result;
gboolean no_size;
guint64 block_size;
#ifdef USE_STATFS
struct statfs statfs_buffer;
const char *fstype;
#elif defined(USE_STATVFS)
struct statvfs statfs_buffer;
#endif
GFileAttributeMatcher *attribute_matcher;
no_size = FALSE;
#ifdef USE_STATFS
#if STATFS_ARGS == 2
statfs_result = statfs (local->filename, &statfs_buffer);
#elif STATFS_ARGS == 4
statfs_result = statfs (local->filename, &statfs_buffer,
sizeof (statfs_buffer), 0);
#endif
block_size = statfs_buffer.f_bsize;
#if defined(__linux__)
/* ncpfs does not know the amount of available and free space *
* assuming ncpfs is linux specific, if you are on a non-linux platform
* where ncpfs is available, please file a bug about it on bugzilla.gnome.org
*/
if (statfs_buffer.f_bavail == 0 && statfs_buffer.f_bfree == 0 &&
/* linux/ncp_fs.h: NCP_SUPER_MAGIC == 0x564c */
statfs_buffer.f_type == 0x564c)
no_size = TRUE;
#endif
#elif defined(USE_STATVFS)
statfs_result = statvfs (local->filename, &statfs_buffer);
block_size = statfs_buffer.f_frsize;
#endif
if (statfs_result == -1)
{
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errno),
_("Error getting filesystem info: %s"),
g_strerror (errno));
return NULL;
}
info = g_file_info_new ();
attribute_matcher = g_file_attribute_matcher_new (attributes);
if (g_file_attribute_matcher_matches (attribute_matcher,
G_FILE_ATTRIBUTE_FS_FREE))
g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FS_FREE, block_size * statfs_buffer.f_bavail);
if (g_file_attribute_matcher_matches (attribute_matcher,
G_FILE_ATTRIBUTE_FS_SIZE))
g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FS_SIZE, block_size * statfs_buffer.f_blocks);
#ifdef USE_STATFS
fstype = get_fs_type (statfs_buffer.f_type);
if (fstype &&
g_file_attribute_matcher_matches (attribute_matcher,
G_FILE_ATTRIBUTE_FS_TYPE))
g_file_info_set_attribute_string (info, G_FILE_ATTRIBUTE_FS_TYPE, fstype);
#endif
if (g_file_attribute_matcher_matches (attribute_matcher,
G_FILE_ATTRIBUTE_FS_READONLY))
{
get_mount_info (info, local->filename, attribute_matcher);
}
g_file_attribute_matcher_unref (attribute_matcher);
return info;
}
static GVolume *
g_local_file_find_enclosing_volume (GFile *file,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
struct stat buf;
char *mountpoint;
GVolume *volume;
if (lstat (local->filename, &buf) != 0)
{
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_NOT_FOUND,
_("Containing volume does not exist"));
return NULL;
}
mountpoint = find_mountpoint_for (local->filename, buf.st_dev);
if (mountpoint == NULL)
{
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_NOT_FOUND,
_("Containing volume does not exist"));
return NULL;
}
volume = _g_volume_get_for_mount_path (mountpoint);
g_free (mountpoint);
if (volume)
return volume;
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_NOT_FOUND,
_("Containing volume does not exist"));
return NULL;
}
static GFile *
g_local_file_set_display_name (GFile *file,
const char *display_name,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local, *new_local;
GFile *new_file, *parent;
struct stat statbuf;
int errsv;
parent = g_file_get_parent (file);
if (parent == NULL)
{
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_FAILED,
_("Can't rename root directory"));
return NULL;
}
new_file = g_file_get_child_for_display_name (parent, display_name, error);
g_object_unref (parent);
if (new_file == NULL)
return NULL;
local = G_LOCAL_FILE (file);
new_local = G_LOCAL_FILE (new_file);
if (!(g_lstat (new_local->filename, &statbuf) == -1 &&
errno == ENOENT))
{
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_EXISTS,
_("Can't rename file, filename already exist"));
return NULL;
}
if (rename (local->filename, new_local->filename) == -1)
{
errsv = errno;
if (errsv == EINVAL)
/* We can't get a rename file into itself error herer,
so this must be an invalid filename, on e.g. FAT */
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_INVALID_FILENAME,
_("Invalid filename"));
else
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error renaming file: %s"),
g_strerror (errsv));
g_object_unref (new_file);
return NULL;
}
return new_file;
}
static GFileInfo *
g_local_file_query_info (GFile *file,
const char *attributes,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
GFileInfo *info;
GFileAttributeMatcher *matcher;
char *basename, *dirname;
GLocalParentFileInfo parent_info;
matcher = g_file_attribute_matcher_new (attributes);
basename = g_path_get_basename (local->filename);
dirname = g_path_get_dirname (local->filename);
_g_local_file_info_get_parent_info (dirname, matcher, &parent_info);
g_free (dirname);
info = _g_local_file_info_get (basename, local->filename,
matcher, flags, &parent_info,
error);
g_free (basename);
g_file_attribute_matcher_unref (matcher);
return info;
}
static GFileAttributeInfoList *
g_local_file_query_settable_attributes (GFile *file,
GCancellable *cancellable,
GError **error)
{
return g_file_attribute_info_list_ref (local_writable_attributes);
}
static GFileAttributeInfoList *
g_local_file_query_writable_namespaces (GFile *file,
GCancellable *cancellable,
GError **error)
{
return g_file_attribute_info_list_ref (local_writable_namespaces);
}
static gboolean
g_local_file_set_attribute (GFile *file,
const char *attribute,
const GFileAttributeValue *value,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
return _g_local_file_info_set_attribute (local->filename,
attribute,
value,
flags,
cancellable,
error);
}
static gboolean
g_local_file_set_attributes_from_info (GFile *file,
GFileInfo *info,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
int res, chained_res;
GFileIface* default_iface;
res = _g_local_file_info_set_attributes (local->filename,
info, flags,
cancellable,
error);
if (!res)
error = NULL; /* Don't write over error if further errors */
default_iface = g_type_default_interface_peek (G_TYPE_FILE);
chained_res = (default_iface->set_attributes_from_info) (file, info, flags, cancellable, error);
return res && chained_res;
}
static GFileInputStream *
g_local_file_read (GFile *file,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
int fd;
struct stat buf;
fd = g_open (local->filename, O_RDONLY, 0);
if (fd == -1)
{
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errno),
_("Error opening file: %s"),
g_strerror (errno));
return NULL;
}
if (fstat(fd, &buf) == 0 && S_ISDIR (buf.st_mode))
{
close (fd);
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_IS_DIRECTORY,
_("Can't open directory"));
return NULL;
}
return _g_local_file_input_stream_new (fd);
}
static GFileOutputStream *
g_local_file_append_to (GFile *file,
GFileCreateFlags flags,
GCancellable *cancellable,
GError **error)
{
return _g_local_file_output_stream_append (G_LOCAL_FILE (file)->filename,
flags, cancellable, error);
}
static GFileOutputStream *
g_local_file_create (GFile *file,
GFileCreateFlags flags,
GCancellable *cancellable,
GError **error)
{
return _g_local_file_output_stream_create (G_LOCAL_FILE (file)->filename,
flags, cancellable, error);
}
static GFileOutputStream *
g_local_file_replace (GFile *file,
const char *etag,
gboolean make_backup,
GFileCreateFlags flags,
GCancellable *cancellable,
GError **error)
{
return _g_local_file_output_stream_replace (G_LOCAL_FILE (file)->filename,
etag, make_backup, flags,
cancellable, error);
}
static gboolean
g_local_file_delete (GFile *file,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
if (g_remove (local->filename) == -1)
{
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errno),
_("Error removing file: %s"),
g_strerror (errno));
return FALSE;
}
return TRUE;
}
static char *
strip_trailing_slashes (const char *path)
{
char *path_copy;
int len;
path_copy = g_strdup (path);
len = strlen (path_copy);
while (len > 1 && path_copy[len-1] == '/')
path_copy[--len] = 0;
return path_copy;
}
static char *
expand_symlink (const char *link)
{
char *resolved, *canonical, *parent, *link2;
char symlink_value[4096];
ssize_t res;
res = readlink (link, symlink_value, sizeof (symlink_value) - 1);
if (res == -1)
return g_strdup (link);
symlink_value[res] = 0;
if (g_path_is_absolute (symlink_value))
return canonicalize_filename (symlink_value);
else
{
link2 = strip_trailing_slashes (link);
parent = g_path_get_dirname (link2);
g_free (link2);
resolved = g_build_filename (parent, symlink_value, NULL);
g_free (parent);
canonical = canonicalize_filename (resolved);
g_free (resolved);
return canonical;
}
}
static char *
get_parent (const char *path,
dev_t *parent_dev)
{
char *parent, *tmp;
struct stat parent_stat;
int num_recursions;
char *path_copy;
path_copy = strip_trailing_slashes (path);
parent = g_path_get_dirname (path_copy);
if (strcmp (parent, ".") == 0 ||
strcmp (parent, path_copy) == 0)
{
g_free (path_copy);
return NULL;
}
g_free (path_copy);
num_recursions = 0;
do {
if (g_lstat (parent, &parent_stat) != 0)
{
g_free (parent);
return NULL;
}
if (S_ISLNK (parent_stat.st_mode))
{
tmp = parent;
parent = expand_symlink (parent);
g_free (tmp);
}
num_recursions++;
if (num_recursions > 12)
{
g_free (parent);
return NULL;
}
} while (S_ISLNK (parent_stat.st_mode));
*parent_dev = parent_stat.st_dev;
return parent;
}
static char *
expand_all_symlinks (const char *path)
{
char *parent, *parent_expanded;
char *basename, *res;
dev_t parent_dev;
parent = get_parent (path, &parent_dev);
if (parent)
{
parent_expanded = expand_all_symlinks (parent);
g_free (parent);
basename = g_path_get_basename (path);
res = g_build_filename (parent_expanded, basename, NULL);
g_free (basename);
g_free (parent_expanded);
}
else
res = g_strdup (path);
return res;
}
static char *
find_mountpoint_for (const char *file,
dev_t dev)
{
char *dir, *parent;
dev_t dir_dev, parent_dev;
dir = g_strdup (file);
dir_dev = dev;
while (1)
{
parent = get_parent (dir, &parent_dev);
if (parent == NULL)
return dir;
if (parent_dev != dir_dev)
{
g_free (parent);
return dir;
}
g_free (dir);
dir = parent;
}
}
static char *
find_topdir_for (const char *file)
{
char *dir;
dev_t dir_dev;
dir = get_parent (file, &dir_dev);
if (dir == NULL)
return NULL;
return find_mountpoint_for (dir, dir_dev);
}
static char *
get_unique_filename (const char *basename,
int id)
{
const char *dot;
if (id == 1)
return g_strdup (basename);
dot = strchr (basename, '.');
if (dot)
return g_strdup_printf ("%.*s.%d%s", dot - basename, basename, id, dot);
else
return g_strdup_printf ("%s.%d", basename, id);
}
static gboolean
path_has_prefix (const char *path,
const char *prefix)
{
int prefix_len;
if (prefix == NULL)
return TRUE;
prefix_len = strlen (prefix);
if (strncmp (path, prefix, prefix_len) == 0 &&
(prefix_len == 0 || /* empty prefix always matches */
prefix[prefix_len - 1] == '/' || /* last char in prefix was a /, so it must be in path too */
path[prefix_len] == 0 ||
path[prefix_len] == '/'))
return TRUE;
return FALSE;
}
static char *
try_make_relative (const char *path,
const char *base)
{
char *path2, *base2;
char *relative;
path2 = expand_all_symlinks (path);
base2 = expand_all_symlinks (base);
relative = NULL;
if (path_has_prefix (path2, base2))
{
relative = path2 + strlen (base2);
while (*relative == '/')
relative ++;
relative = g_strdup (relative);
}
g_free (path2);
g_free (base2);
if (relative)
return relative;
/* Failed, use abs path */
return g_strdup (path);
}
static char *
escape_trash_name (char *name)
{
GString *str;
const gchar hex[16] = "0123456789ABCDEF";
str = g_string_new ("");
while (*name != 0)
{
char c;
c = *name++;
if (g_ascii_isprint (c))
g_string_append_c (str, c);
else
{
g_string_append_c (str, '%');
g_string_append_c (str, hex[((guchar)c) >> 4]);
g_string_append_c (str, hex[((guchar)c) & 0xf]);
}
}
return g_string_free (str, FALSE);
}
static gboolean
g_local_file_trash (GFile *file,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
struct stat file_stat, home_stat, trash_stat, global_stat;
const char *homedir;
char *dirname;
char *trashdir, *globaldir, *topdir, *infodir, *filesdir;
char *basename, *trashname, *trashfile, *infoname, *infofile;
char *original_name, *original_name_escaped;
uid_t uid;
char uid_str[32];
int i;
char *data;
gboolean is_homedir_trash;
time_t t;
struct tm now;
char delete_time[32];
int fd;
if (g_lstat (local->filename, &file_stat) != 0)
{
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errno),
_("Error trashing file: %s"),
g_strerror (errno));
return FALSE;
}
homedir = g_get_home_dir ();
g_stat (homedir, &home_stat);
is_homedir_trash = FALSE;
trashdir = NULL;
if (file_stat.st_dev == home_stat.st_dev)
{
is_homedir_trash = TRUE;
errno = 0;
trashdir = g_build_filename (g_get_user_data_dir (), "Trash", NULL);
if (g_mkdir_with_parents (trashdir, 0700) < 0)
{
char *display_name;
int err;
err = errno;
display_name = g_filename_display_name (trashdir);
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (err),
_("Unable to create trash dir %s: %s"),
display_name, g_strerror (err));
g_free (display_name);
g_free (trashdir);
return FALSE;
}
topdir = g_strdup (g_get_user_data_dir ());
}
else
{
uid = geteuid ();
g_snprintf (uid_str, sizeof (uid_str), "%lu", (unsigned long)uid);
topdir = find_topdir_for (local->filename);
if (topdir == NULL)
{
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Unable to find toplevel directory for trash"));
return FALSE;
}
/* Try looking for global trash dir $topdir/.Trash/$uid */
globaldir = g_build_filename (topdir, ".Trash", NULL);
if (g_lstat (globaldir, &global_stat) == 0 &&
S_ISDIR (global_stat.st_mode) &&
(global_stat.st_mode & S_ISVTX) != 0)
{
trashdir = g_build_filename (globaldir, uid_str, NULL);
if (g_lstat (trashdir, &trash_stat) == 0)
{
if (!S_ISDIR (trash_stat.st_mode) ||
trash_stat.st_uid != uid)
{
/* Not a directory or not owned by user, ignore */
g_free (trashdir);
trashdir = NULL;
}
}
else if (g_mkdir (trashdir, 0700) == -1)
{
g_free (trashdir);
trashdir = NULL;
}
}
g_free (globaldir);
if (trashdir == NULL)
{
/* No global trash dir, or it failed the tests, fall back to $topdir/.Trash-$uid */
dirname = g_strdup_printf (".Trash-%s", uid_str);
trashdir = g_build_filename (topdir, dirname, NULL);
g_free (dirname);
if (g_lstat (trashdir, &trash_stat) == 0)
{
if (!S_ISDIR (trash_stat.st_mode) ||
trash_stat.st_uid != uid)
{
/* Not a directory or not owned by user, ignore */
g_free (trashdir);
trashdir = NULL;
}
}
else if (g_mkdir (trashdir, 0700) == -1)
{
g_free (trashdir);
trashdir = NULL;
}
}
if (trashdir == NULL)
{
g_free (topdir);
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Unable to find or create trash directory"));
return FALSE;
}
}
/* Trashdir points to the trash dir with the "info" and "files" subdirectories */
infodir = g_build_filename (trashdir, "info", NULL);
filesdir = g_build_filename (trashdir, "files", NULL);
g_free (trashdir);
/* Make sure we have the subdirectories */
if ((g_mkdir (infodir, 0700) == -1 && errno != EEXIST) ||
(g_mkdir (filesdir, 0700) == -1 && errno != EEXIST))
{
g_free (topdir);
g_free (infodir);
g_free (filesdir);
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Unable to find or create trash directory"));
return FALSE;
}
basename = g_path_get_basename (local->filename);
i = 1;
trashname = NULL;
infofile = NULL;
do {
g_free (trashname);
g_free (infofile);
trashname = get_unique_filename (basename, i++);
infoname = g_strconcat (trashname, ".trashinfo", NULL);
infofile = g_build_filename (infodir, infoname, NULL);
g_free (infoname);
fd = open (infofile, O_CREAT | O_EXCL, 0666);
} while (fd == -1 && errno == EEXIST);
g_free (basename);
g_free (infodir);
if (fd == -1)
{
g_free (filesdir);
g_free (topdir);
g_free (trashname);
g_free (infofile);
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errno),
_("Unable to create trashed file: %s"),
g_strerror (errno));
return FALSE;
}
close (fd);
/* TODO: Maybe we should verify that you can delete the file from the trash
before moving it? OTOH, that is hard, as it needs a recursive scan */
trashfile = g_build_filename (filesdir, trashname, NULL);
g_free (filesdir);
if (g_rename (local->filename, trashfile) == -1)
{
g_free (topdir);
g_free (trashname);
g_free (infofile);
g_free (trashfile);
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errno),
_("Unable to trash file: %s"),
g_strerror (errno));
return FALSE;
}
g_free (trashfile);
/* TODO: Do we need to update mtime/atime here after the move? */
/* Use absolute names for homedir */
if (is_homedir_trash)
original_name = g_strdup (local->filename);
else
original_name = try_make_relative (local->filename, topdir);
original_name_escaped = escape_trash_name (original_name);
g_free (original_name);
g_free (topdir);
t = time (NULL);
localtime_r (&t, &now);
delete_time[0] = 0;
strftime(delete_time, sizeof (delete_time), "%Y-%m-%dT%H:%M:%S", &now);
data = g_strdup_printf ("[Trash Info]\nPath=%s\nDeletionDate=%s\n",
original_name_escaped, delete_time);
g_file_set_contents (infofile, data, -1, NULL);
g_free (infofile);
g_free (data);
g_free (original_name_escaped);
g_free (trashname);
return TRUE;
}
static gboolean
g_local_file_make_directory (GFile *file,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
if (g_mkdir (local->filename, 0755) == -1)
{
int errsv = errno;
if (errsv == EINVAL)
/* This must be an invalid filename, on e.g. FAT */
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_INVALID_FILENAME,
_("Invalid filename"));
else
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error removing file: %s"),
g_strerror (errsv));
return FALSE;
}
return TRUE;
}
static gboolean
g_local_file_make_symbolic_link (GFile *file,
const char *symlink_value,
GCancellable *cancellable,
GError **error)
{
#ifdef HAVE_SYMLINK
GLocalFile *local = G_LOCAL_FILE (file);
if (symlink (symlink_value, local->filename) == -1)
{
int errsv = errno;
if (errsv == EINVAL)
/* This must be an invalid filename, on e.g. FAT */
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_INVALID_FILENAME,
_("Invalid filename"));
else
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error making symbolic link: %s"),
g_strerror (errsv));
return FALSE;
}
return TRUE;
#else
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, "Symlinks not supported");
return FALSE;
#endif
}
static gboolean
g_local_file_copy (GFile *source,
GFile *destination,
GFileCopyFlags flags,
GCancellable *cancellable,
GFileProgressCallback progress_callback,
gpointer progress_callback_data,
GError **error)
{
/* Fall back to default copy */
g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, "Copy not supported");
return FALSE;
}
static gboolean
g_local_file_move (GFile *source,
GFile *destination,
GFileCopyFlags flags,
GCancellable *cancellable,
GFileProgressCallback progress_callback,
gpointer progress_callback_data,
GError **error)
{
GLocalFile *local_source = G_LOCAL_FILE (source);
GLocalFile *local_destination = G_LOCAL_FILE (destination);
struct stat statbuf;
gboolean destination_exist, source_is_dir;
char *backup_name;
int res;
res = g_lstat (local_source->filename, &statbuf);
if (res == -1)
{
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errno),
_("Error moving file: %s"),
g_strerror (errno));
return FALSE;
}
else
source_is_dir = S_ISDIR (statbuf.st_mode);
destination_exist = FALSE;
res = g_lstat (local_destination->filename, &statbuf);
if (res == 0)
{
destination_exist = TRUE; /* Target file exists */
if (flags & G_FILE_COPY_OVERWRITE)
{
/* Always fail on dirs, even with overwrite */
if (S_ISDIR (statbuf.st_mode))
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_WOULD_MERGE,
_("Can't move directory over directory"));
return FALSE;
}
}
else
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_EXISTS,
_("Target file already exists"));
return FALSE;
}
}
if (flags & G_FILE_COPY_BACKUP && destination_exist)
{
backup_name = g_strconcat (local_destination->filename, "~", NULL);
if (rename (local_destination->filename, backup_name) == -1)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_CANT_CREATE_BACKUP,
_("Backup file creation failed"));
g_free (backup_name);
return FALSE;
}
g_free (backup_name);
destination_exist = FALSE; /* It did, but no more */
}
if (source_is_dir && destination_exist && (flags & G_FILE_COPY_OVERWRITE))
{
/* Source is a dir, destination exists (and is not a dir, because that would have failed
earlier), and we're overwriting. Manually remove the target so we can do the rename. */
res = unlink (local_destination->filename);
if (res == -1)
{
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errno),
_("Error removing target file: %s"),
g_strerror (errno));
return FALSE;
}
}
if (rename (local_source->filename, local_destination->filename) == -1)
{
int errsv = errno;
if (errsv == EXDEV)
/* This will cause the fallback code to run */
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Move between mounts not supported"));
else if (errsv == EINVAL)
/* This must be an invalid filename, on e.g. FAT, or
we're trying to move the file into itself...
We return invalid filename for both... */
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_INVALID_FILENAME,
_("Invalid filename"));
else
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error moving file: %s"),
g_strerror (errsv));
return FALSE;
}
return TRUE;
}
static GDirectoryMonitor*
g_local_file_monitor_dir (GFile *file,
GFileMonitorFlags flags,
GCancellable *cancellable)
{
GLocalFile* local_file = G_LOCAL_FILE(file);
return _g_local_directory_monitor_new (local_file->filename, flags);
}
static GFileMonitor*
g_local_file_monitor_file (GFile *file,
GFileMonitorFlags flags,
GCancellable *cancellable)
{
GLocalFile* local_file = G_LOCAL_FILE(file);
return _g_local_file_monitor_new (local_file->filename, flags);
}
static void
g_local_file_file_iface_init (GFileIface *iface)
{
iface->dup = g_local_file_dup;
iface->hash = g_local_file_hash;
iface->equal = g_local_file_equal;
iface->is_native = g_local_file_is_native;
iface->has_uri_scheme = g_local_file_has_uri_scheme;
iface->get_uri_scheme = g_local_file_get_uri_scheme;
iface->get_basename = g_local_file_get_basename;
iface->get_path = g_local_file_get_path;
iface->get_uri = g_local_file_get_uri;
iface->get_parse_name = g_local_file_get_parse_name;
iface->get_parent = g_local_file_get_parent;
iface->contains_file = g_local_file_contains_file;
iface->get_relative_path = g_local_file_get_relative_path;
iface->resolve_relative_path = g_local_file_resolve_relative_path;
iface->get_child_for_display_name = g_local_file_get_child_for_display_name;
iface->set_display_name = g_local_file_set_display_name;
iface->enumerate_children = g_local_file_enumerate_children;
iface->query_info = g_local_file_query_info;
iface->query_filesystem_info = g_local_file_query_filesystem_info;
iface->find_enclosing_volume = g_local_file_find_enclosing_volume;
iface->query_settable_attributes = g_local_file_query_settable_attributes;
iface->query_writable_namespaces = g_local_file_query_writable_namespaces;
iface->set_attribute = g_local_file_set_attribute;
iface->set_attributes_from_info = g_local_file_set_attributes_from_info;
iface->read_fn = g_local_file_read;
iface->append_to = g_local_file_append_to;
iface->create = g_local_file_create;
iface->replace = g_local_file_replace;
iface->delete_file = g_local_file_delete;
iface->trash = g_local_file_trash;
iface->make_directory = g_local_file_make_directory;
iface->make_symbolic_link = g_local_file_make_symbolic_link;
iface->copy = g_local_file_copy;
iface->move = g_local_file_move;
iface->monitor_dir = g_local_file_monitor_dir;
iface->monitor_file = g_local_file_monitor_file;
}
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