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glib/gio/glocalfile.c
Matthias Clasen 5843582604 Fix build with statvfs 
As pointed out in bug 704587, the maze of ifdefs was missing the
variable declaration for statfs_result in one case.

https://bugzilla.gnome.org/show_bug.cgi?id=704587
2013-07-28 17:04:56 -04:00

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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>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#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
#ifndef O_BINARY
#define O_BINARY 0
#endif
#include "gfileattribute.h"
#include "glocalfile.h"
#include "glocalfileinfo.h"
#include "glocalfileenumerator.h"
#include "glocalfileinputstream.h"
#include "glocalfileoutputstream.h"
#include "glocalfileiostream.h"
#include "glocaldirectorymonitor.h"
#include "glocalfilemonitor.h"
#include "gmountprivate.h"
#include "gunixmounts.h"
#include "gioerror.h"
#include <glib/gstdio.h>
#include "glibintl.h"
#ifdef G_OS_UNIX
#include "glib-unix.h"
#endif
#ifdef G_OS_WIN32
#include <windows.h>
#include <io.h>
#include <direct.h>
#ifndef FILE_READ_ONLY_VOLUME
#define FILE_READ_ONLY_VOLUME 0x00080000
#endif
#ifndef S_ISDIR
#define S_ISDIR(m) (((m) & _S_IFMT) == _S_IFDIR)
#endif
#ifndef S_ISLNK
#define S_ISLNK(m) (0)
#endif
#endif
static void g_local_file_file_iface_init (GFileIface *iface);
static GFileAttributeInfoList *local_writable_attributes = NULL;
static /* GFileAttributeInfoList * */ gsize local_writable_namespaces = 0;
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);
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_INFO_COPY_WITH_FILE |
G_FILE_ATTRIBUTE_INFO_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_INFO_COPY_WHEN_MOVED);
g_file_attribute_info_list_add (list,
G_FILE_ATTRIBUTE_UNIX_GID,
G_FILE_ATTRIBUTE_TYPE_UINT32,
G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
#endif
#ifdef HAVE_SYMLINK
g_file_attribute_info_list_add (list,
G_FILE_ATTRIBUTE_STANDARD_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_INFO_COPY_WITH_FILE |
G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
g_file_attribute_info_list_add (list,
G_FILE_ATTRIBUTE_TIME_MODIFIED_USEC,
G_FILE_ATTRIBUTE_TYPE_UINT32,
G_FILE_ATTRIBUTE_INFO_COPY_WITH_FILE |
G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
/* When copying, the target file is accessed. Replicating
* the source access time does not make sense in this case.
*/
g_file_attribute_info_list_add (list,
G_FILE_ATTRIBUTE_TIME_ACCESS,
G_FILE_ATTRIBUTE_TYPE_UINT64,
G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
g_file_attribute_info_list_add (list,
G_FILE_ATTRIBUTE_TIME_ACCESS_USEC,
G_FILE_ATTRIBUTE_TYPE_UINT32,
G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
#endif
local_writable_attributes = list;
}
static void
g_local_file_init (GLocalFile *local)
{
}
const char *
_g_local_file_get_filename (GLocalFile *file)
{
return file->filename;
}
static char *
canonicalize_filename (const char *filename)
{
char *canon, *start, *p, *q;
char *cwd;
int i;
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);
if (start == NULL)
{
/* This shouldn't really happen, as g_get_current_dir() should
return an absolute pathname, but bug 573843 shows this is
not always happening */
g_free (canon);
return g_build_filename (G_DIR_SEPARATOR_S, filename, NULL);
}
/* POSIX allows double slashes at the start to
* mean something special (as does windows too).
* So, "//" != "/", but more than two slashes
* is treated as "/".
*/
i = 0;
for (p = start - 1;
(p >= canon) &&
G_IS_DIR_SEPARATOR (*p);
p--)
i++;
if (i > 2)
{
i -= 1;
start -= i;
memmove (start, start+i, strlen (start+i)+1);
}
/* Make sure we're using the canonical dir separator */
p++;
while (p < start && G_IS_DIR_SEPARATOR (*p))
*p++ = G_DIR_SEPARATOR;
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;
}
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;
char *escaped_path;
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 (filename, roundtripped_filename) != 0)
{
g_free (utf8_filename);
utf8_filename = NULL;
}
g_free (roundtripped_filename);
}
}
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
{
#ifdef G_OS_WIN32
char *dup_filename, *p, *backslash;
/* Turn backslashes into forward slashes like
* g_filename_to_uri() would do (but we can't use that because
* it doesn't output IRIs).
*/
dup_filename = g_strdup (filename);
filename = p = dup_filename;
while ((backslash = strchr (p, '\\')) != NULL)
{
*backslash = '/';
p = backslash + 1;
}
#endif
escaped_path = g_uri_escape_string (filename,
G_URI_RESERVED_CHARS_ALLOWED_IN_PATH_ELEMENT "/",
TRUE);
parse_name = g_strconcat ("file://",
(*escaped_path != '/') ? "/" : "",
escaped_path,
NULL);
g_free (escaped_path);
#ifdef G_OS_WIN32
g_free (dup_filename);
#endif
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;
/* Handle the case where prefix is the root, so that
* the IS_DIR_SEPRARATOR check below works */
if (prefix_len > 0 &&
G_IS_DIR_SEPARATOR (prefix[prefix_len-1]))
prefix_len--;
return path + prefix_len;
}
static gboolean
g_local_file_prefix_matches (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,
attributes, flags,
cancellable, error);
}
static GFile *
g_local_file_get_child_for_display_name (GFile *file,
const char *display_name,
GError **error)
{
GFile *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;
}
new_file = g_file_get_child (file, basename);
g_free (basename);
return new_file;
}
#if defined(USE_STATFS) && !defined(HAVE_STRUCT_STATFS_F_FSTYPENAME)
static const char *
get_fs_type (long f_type)
{
/* filesystem ids taken from linux manpage */
switch (f_type)
{
case 0xadf5:
return "adfs";
case 0x5346414f:
return "afs";
case 0x0187:
return "autofs";
case 0xADFF:
return "affs";
case 0x42465331:
return "befs";
case 0x1BADFACE:
return "bfs";
case 0x9123683E:
return "btrfs";
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/ext4";
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 0x73717368:
return "squashfs";
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";
case 0x52345362:
return "reiser4";
default:
return NULL;
}
}
#endif
#ifndef G_OS_WIN32
G_LOCK_DEFINE_STATIC(mount_info_hash);
static GHashTable *mount_info_hash = NULL;
static 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)
{
GStatBuf buf;
gboolean got_info;
gpointer info_as_ptr;
guint mount_info;
char *mountpoint;
dev_t *dev;
GUnixMountEntry *mount;
guint64 cache_time;
if (g_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 = g_strdup ("/");
mount = g_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);
}
g_free (mountpoint);
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_FILESYSTEM_READONLY, TRUE);
}
#endif
#ifdef G_OS_WIN32
static gboolean
is_xp_or_later (void)
{
static int result = -1;
if (result == -1)
{
#ifndef _MSC_VER
OSVERSIONINFOEX ver_info = {0};
DWORDLONG cond_mask = 0;
int op = VER_GREATER_EQUAL;
ver_info.dwOSVersionInfoSize = sizeof ver_info;
ver_info.dwMajorVersion = 5;
ver_info.dwMinorVersion = 1;
VER_SET_CONDITION (cond_mask, VER_MAJORVERSION, op);
VER_SET_CONDITION (cond_mask, VER_MINORVERSION, op);
result = VerifyVersionInfo (&ver_info,
VER_MAJORVERSION | VER_MINORVERSION,
cond_mask) != 0;
#else
result = ((DWORD)(LOBYTE (LOWORD (GetVersion ())))) >= 5;
#endif
}
return result;
}
static wchar_t *
get_volume_for_path (const char *path)
{
long len;
wchar_t *wpath;
wchar_t *result;
wpath = g_utf8_to_utf16 (path, -1, NULL, NULL, NULL);
result = g_new (wchar_t, MAX_PATH);
if (!GetVolumePathNameW (wpath, result, MAX_PATH))
{
char *msg = g_win32_error_message (GetLastError ());
g_critical ("GetVolumePathName failed: %s", msg);
g_free (msg);
g_free (result);
g_free (wpath);
return NULL;
}
len = wcslen (result);
if (len > 0 && result[len-1] != L'\\')
{
result = g_renew (wchar_t, result, len + 2);
result[len] = L'\\';
result[len + 1] = 0;
}
g_free (wpath);
return result;
}
static char *
find_mountpoint_for (const char *file, dev_t dev)
{
wchar_t *wpath;
char *utf8_path;
wpath = get_volume_for_path (file);
if (!wpath)
return NULL;
utf8_path = g_utf16_to_utf8 (wpath, -1, NULL, NULL, NULL);
g_free (wpath);
return utf8_path;
}
static void
get_filesystem_readonly (GFileInfo *info,
const char *path)
{
wchar_t *rootdir;
rootdir = get_volume_for_path (path);
if (rootdir)
{
if (is_xp_or_later ())
{
DWORD flags;
if (GetVolumeInformationW (rootdir, NULL, 0, NULL, NULL, &flags, NULL, 0))
g_file_info_set_attribute_boolean (info, G_FILE_ATTRIBUTE_FILESYSTEM_READONLY,
(flags & FILE_READ_ONLY_VOLUME) != 0);
}
else
{
if (GetDriveTypeW (rootdir) == DRIVE_CDROM)
g_file_info_set_attribute_boolean (info, G_FILE_ATTRIBUTE_FILESYSTEM_READONLY, TRUE);
}
}
g_free (rootdir);
}
#endif /* G_OS_WIN32 */
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 = 0;
gboolean no_size;
#ifndef G_OS_WIN32
const char *fstype;
#ifdef USE_STATFS
guint64 block_size;
struct statfs statfs_buffer;
#elif defined(USE_STATVFS)
guint64 block_size;
struct statvfs statfs_buffer;
#endif /* USE_STATFS */
#endif /* G_OS_WIN32 */
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 /* STATFS_ARGS == 2 */
block_size = statfs_buffer.f_bsize;
/* Many backends can't report free size (for instance the gvfs fuse
backend for backend not supporting this), and set f_bfree to 0,
but it can be 0 for real too. We treat the available == 0 and
free == 0 case as "both of these are invalid".
*/
#ifndef G_OS_WIN32
if (statfs_result == 0 &&
statfs_buffer.f_bavail == 0 && statfs_buffer.f_bfree == 0)
no_size = TRUE;
#endif /* G_OS_WIN32 */
#elif defined(USE_STATVFS)
statfs_result = statvfs (local->filename, &statfs_buffer);
block_size = statfs_buffer.f_frsize;
#endif /* USE_STATFS */
if (statfs_result == -1)
{
int errsv = errno;
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error getting filesystem info: %s"),
g_strerror (errsv));
return NULL;
}
info = g_file_info_new ();
attribute_matcher = g_file_attribute_matcher_new (attributes);
if (!no_size &&
g_file_attribute_matcher_matches (attribute_matcher,
G_FILE_ATTRIBUTE_FILESYSTEM_FREE))
{
#ifdef G_OS_WIN32
gchar *localdir = g_path_get_dirname (local->filename);
wchar_t *wdirname = g_utf8_to_utf16 (localdir, -1, NULL, NULL, NULL);
ULARGE_INTEGER li;
g_free (localdir);
if (GetDiskFreeSpaceExW (wdirname, &li, NULL, NULL))
g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_FREE, (guint64)li.QuadPart);
g_free (wdirname);
#else
#if defined(USE_STATFS) || defined(USE_STATVFS)
g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_FREE, block_size * statfs_buffer.f_bavail);
#endif
#endif
}
if (!no_size &&
g_file_attribute_matcher_matches (attribute_matcher,
G_FILE_ATTRIBUTE_FILESYSTEM_SIZE))
{
#ifdef G_OS_WIN32
gchar *localdir = g_path_get_dirname (local->filename);
wchar_t *wdirname = g_utf8_to_utf16 (localdir, -1, NULL, NULL, NULL);
ULARGE_INTEGER li;
g_free (localdir);
if (GetDiskFreeSpaceExW (wdirname, NULL, &li, NULL))
g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_SIZE, (guint64)li.QuadPart);
g_free (wdirname);
#else
#if defined(USE_STATFS) || defined(USE_STATVFS)
g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_SIZE, block_size * statfs_buffer.f_blocks);
#endif
#endif /* G_OS_WIN32 */
}
if (!no_size &&
g_file_attribute_matcher_matches (attribute_matcher,
G_FILE_ATTRIBUTE_FILESYSTEM_USED))
{
#ifdef G_OS_WIN32
gchar *localdir = g_path_get_dirname (local->filename);
wchar_t *wdirname = g_utf8_to_utf16 (localdir, -1, NULL, NULL, NULL);
ULARGE_INTEGER li_free;
ULARGE_INTEGER li_total;
g_free (localdir);
if (GetDiskFreeSpaceExW (wdirname, &li_free, &li_total, NULL))
g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_USED, (guint64)li_total.QuadPart - (guint64)li_free.QuadPart);
g_free (wdirname);
#else
g_file_info_set_attribute_uint64 (info, G_FILE_ATTRIBUTE_FILESYSTEM_USED, block_size * (statfs_buffer.f_blocks - statfs_buffer.f_bfree));
#endif /* G_OS_WIN32 */
}
#ifndef G_OS_WIN32
#ifdef USE_STATFS
#if defined(HAVE_STRUCT_STATFS_F_FSTYPENAME)
fstype = g_strdup (statfs_buffer.f_fstypename);
#else
fstype = get_fs_type (statfs_buffer.f_type);
#endif
#elif defined(USE_STATVFS)
#if defined(HAVE_STRUCT_STATVFS_F_FSTYPENAME)
fstype = g_strdup (statfs_buffer.f_fstypename);
#elif defined(HAVE_STRUCT_STATVFS_F_BASETYPE)
fstype = g_strdup (statfs_buffer.f_basetype);
#else
fstype = NULL;
#endif
#endif /* USE_STATFS */
if (fstype &&
g_file_attribute_matcher_matches (attribute_matcher,
G_FILE_ATTRIBUTE_FILESYSTEM_TYPE))
g_file_info_set_attribute_string (info, G_FILE_ATTRIBUTE_FILESYSTEM_TYPE, fstype);
#endif /* G_OS_WIN32 */
if (g_file_attribute_matcher_matches (attribute_matcher,
G_FILE_ATTRIBUTE_FILESYSTEM_READONLY))
{
#ifdef G_OS_WIN32
get_filesystem_readonly (info, local->filename);
#else
get_mount_info (info, local->filename, attribute_matcher);
#endif /* G_OS_WIN32 */
}
g_file_attribute_matcher_unref (attribute_matcher);
return info;
}
static GMount *
g_local_file_find_enclosing_mount (GFile *file,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
GStatBuf buf;
char *mountpoint;
GMount *mount;
if (g_lstat (local->filename, &buf) != 0)
{
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;
}
mountpoint = find_mountpoint_for (local->filename, buf.st_dev);
if (mountpoint == 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;
}
mount = _g_mount_get_for_mount_path (mountpoint, cancellable);
g_free (mountpoint);
if (mount)
return mount;
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;
}
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;
GStatBuf statbuf;
GVfsClass *class;
GVfs *vfs;
int errsv;
parent = g_file_get_parent (file);
if (parent == NULL)
{
g_set_error_literal (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)
{
errsv = errno;
if (errsv != ENOENT)
{
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error renaming file: %s"),
g_strerror (errsv));
return NULL;
}
}
else
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_EXISTS,
_("Can't rename file, filename already exists"));
return NULL;
}
if (g_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_literal (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;
}
vfs = g_vfs_get_default ();
class = G_VFS_GET_CLASS (vfs);
if (class->local_file_moved)
class->local_file_moved (vfs, local->filename, new_local->filename);
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_local_file_info_free_parent_info (&parent_info);
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)
{
GFileAttributeInfoList *list;
GVfsClass *class;
GVfs *vfs;
if (g_once_init_enter (&local_writable_namespaces))
{
/* 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_INFO_COPY_WITH_FILE |
G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
g_file_attribute_info_list_add (list,
"xattr-sys",
G_FILE_ATTRIBUTE_TYPE_STRING,
G_FILE_ATTRIBUTE_INFO_COPY_WHEN_MOVED);
#endif
vfs = g_vfs_get_default ();
class = G_VFS_GET_CLASS (vfs);
if (class->add_writable_namespaces)
class->add_writable_namespaces (vfs, list);
g_once_init_leave (&local_writable_namespaces, (gsize)list);
}
list = (GFileAttributeInfoList *)local_writable_namespaces;
return g_file_attribute_info_list_ref (list);
}
static gboolean
g_local_file_set_attribute (GFile *file,
const char *attribute,
GFileAttributeType type,
gpointer value_p,
GFileQueryInfoFlags flags,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
return _g_local_file_info_set_attribute (local->filename,
attribute,
type,
value_p,
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, ret;
GLocalFileStat buf;
fd = g_open (local->filename, O_RDONLY|O_BINARY, 0);
if (fd == -1)
{
int errsv = errno;
#ifdef G_OS_WIN32
if (errsv == EACCES)
{
ret = _stati64 (local->filename, &buf);
if (ret == 0 && S_ISDIR (buf.st_mode))
{
g_set_error_literal (error, G_IO_ERROR,
G_IO_ERROR_IS_DIRECTORY,
_("Can't open directory"));
return NULL;
}
}
#endif
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error opening file: %s"),
g_strerror (errsv));
return NULL;
}
#ifdef G_OS_WIN32
ret = _fstati64 (fd, &buf);
#else
ret = fstat (fd, &buf);
#endif
if (ret == 0 && S_ISDIR (buf.st_mode))
{
(void) g_close (fd, NULL);
g_set_error_literal (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,
FALSE, flags, NULL,
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,
FALSE,
etag, make_backup, flags, NULL,
cancellable, error);
}
static GFileIOStream *
g_local_file_open_readwrite (GFile *file,
GCancellable *cancellable,
GError **error)
{
GFileOutputStream *output;
GFileIOStream *res;
output = _g_local_file_output_stream_open (G_LOCAL_FILE (file)->filename,
TRUE,
cancellable, error);
if (output == NULL)
return NULL;
res = _g_local_file_io_stream_new (G_LOCAL_FILE_OUTPUT_STREAM (output));
g_object_unref (output);
return res;
}
static GFileIOStream *
g_local_file_create_readwrite (GFile *file,
GFileCreateFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileOutputStream *output;
GFileIOStream *res;
output = _g_local_file_output_stream_create (G_LOCAL_FILE (file)->filename,
TRUE, flags, NULL,
cancellable, error);
if (output == NULL)
return NULL;
res = _g_local_file_io_stream_new (G_LOCAL_FILE_OUTPUT_STREAM (output));
g_object_unref (output);
return res;
}
static GFileIOStream *
g_local_file_replace_readwrite (GFile *file,
const char *etag,
gboolean make_backup,
GFileCreateFlags flags,
GCancellable *cancellable,
GError **error)
{
GFileOutputStream *output;
GFileIOStream *res;
output = _g_local_file_output_stream_replace (G_LOCAL_FILE (file)->filename,
TRUE,
etag, make_backup, flags, NULL,
cancellable, error);
if (output == NULL)
return NULL;
res = _g_local_file_io_stream_new (G_LOCAL_FILE_OUTPUT_STREAM (output));
g_object_unref (output);
return res;
}
static gboolean
g_local_file_delete (GFile *file,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
GVfsClass *class;
GVfs *vfs;
if (g_remove (local->filename) == -1)
{
int errsv = errno;
/* Posix allows EEXIST too, but the more sane error
is G_IO_ERROR_NOT_FOUND, and it's what nautilus
expects */
if (errsv == EEXIST)
errsv = ENOTEMPTY;
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error removing file: %s"),
g_strerror (errsv));
return FALSE;
}
vfs = g_vfs_get_default ();
class = G_VFS_GET_CLASS (vfs);
if (class->local_file_removed)
class->local_file_removed (vfs, local->filename);
return TRUE;
}
#ifndef G_OS_WIN32
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];
#ifdef G_OS_WIN32
#else
ssize_t res;
#endif
#ifdef G_OS_WIN32
#else
res = readlink (link, symlink_value, sizeof (symlink_value) - 1);
if (res == -1)
return g_strdup (link);
symlink_value[res] = 0;
#endif
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;
GStatBuf 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 (parent);
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", (int)(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);
}
gboolean
_g_local_file_has_trash_dir (const char *dirname, dev_t dir_dev)
{
static gsize home_dev_set = 0;
static dev_t home_dev;
char *topdir, *globaldir, *trashdir, *tmpname;
uid_t uid;
char uid_str[32];
GStatBuf global_stat, trash_stat;
gboolean res;
if (g_once_init_enter (&home_dev_set))
{
GStatBuf home_stat;
g_stat (g_get_home_dir (), &home_stat);
home_dev = home_stat.st_dev;
g_once_init_leave (&home_dev_set, 1);
}
/* Assume we can trash to the home */
if (dir_dev == home_dev)
return TRUE;
topdir = find_mountpoint_for (dirname, dir_dev);
if (topdir == NULL)
return FALSE;
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)
{
/* got a toplevel sysadmin created dir, assume we
* can trash to it (we should be able to create a dir)
* This fails for the FAT case where the ownership of
* that dir would be wrong though..
*/
g_free (globaldir);
g_free (topdir);
return TRUE;
}
g_free (globaldir);
/* No global trash dir, or it failed the tests, fall back to $topdir/.Trash-$uid */
uid = geteuid ();
g_snprintf (uid_str, sizeof (uid_str), "%lu", (unsigned long) uid);
tmpname = g_strdup_printf (".Trash-%s", uid_str);
trashdir = g_build_filename (topdir, tmpname, NULL);
g_free (tmpname);
if (g_lstat (trashdir, &trash_stat) == 0)
{
g_free (topdir);
g_free (trashdir);
return S_ISDIR (trash_stat.st_mode) &&
trash_stat.st_uid == uid;
}
g_free (trashdir);
/* User specific trash didn't exist, can we create it? */
res = g_access (topdir, W_OK) == 0;
g_free (topdir);
return res;
}
#ifdef G_OS_UNIX
gboolean
_g_local_file_is_lost_found_dir (const char *path, dev_t path_dev)
{
gboolean ret = FALSE;
gchar *mount_dir = NULL;
size_t mount_dir_len;
GStatBuf statbuf;
if (!g_str_has_suffix (path, "/lost+found"))
goto out;
mount_dir = find_mountpoint_for (path, path_dev);
if (mount_dir == NULL)
goto out;
mount_dir_len = strlen (mount_dir);
/* We special-case rootfs ('/') since it's the only case where
* mount_dir ends in '/'
*/
if (mount_dir_len == 1)
mount_dir_len--;
if (mount_dir_len + strlen ("/lost+found") != strlen (path))
goto out;
if (g_lstat (path, &statbuf) != 0)
goto out;
if (!(S_ISDIR (statbuf.st_mode) &&
statbuf.st_uid == 0 &&
statbuf.st_gid == 0))
goto out;
ret = TRUE;
out:
g_free (mount_dir);
return ret;
}
#endif
static gboolean
g_local_file_trash (GFile *file,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
GStatBuf file_stat, home_stat;
const char *homedir;
char *trashdir, *topdir, *infodir, *filesdir;
char *basename, *trashname, *trashfile, *infoname, *infofile;
char *original_name, *original_name_escaped;
int i;
char *data;
gboolean is_homedir_trash;
char delete_time[32];
int fd;
GStatBuf trash_stat, global_stat;
char *dirname, *globaldir;
GVfsClass *class;
GVfs *vfs;
if (g_lstat (local->filename, &file_stat) != 0)
{
int errsv = errno;
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error trashing file: %s"),
g_strerror (errsv));
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 errsv = errno;
display_name = g_filename_display_name (trashdir);
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Unable to create trash dir %s: %s"),
display_name, g_strerror (errsv));
g_free (display_name);
g_free (trashdir);
return FALSE;
}
topdir = g_strdup (g_get_user_data_dir ());
}
else
{
uid_t uid;
char uid_str[32];
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_literal (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)
{
gboolean tried_create;
/* 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);
tried_create = FALSE;
retry:
if (g_lstat (trashdir, &trash_stat) == 0)
{
if (!S_ISDIR (trash_stat.st_mode) ||
trash_stat.st_uid != uid)
{
/* Remove the failed directory */
if (tried_create)
g_remove (trashdir);
/* Not a directory or not owned by user, ignore */
g_free (trashdir);
trashdir = NULL;
}
}
else
{
if (!tried_create &&
g_mkdir (trashdir, 0700) != -1)
{
/* Ensure that the created dir has the right uid etc.
This might fail on e.g. a FAT dir */
tried_create = TRUE;
goto retry;
}
else
{
g_free (trashdir);
trashdir = NULL;
}
}
}
if (trashdir == NULL)
{
g_free (topdir);
g_set_error_literal (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_literal (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 = g_open (infofile, O_CREAT | O_EXCL, 0666);
} while (fd == -1 && errno == EEXIST);
g_free (basename);
g_free (infodir);
if (fd == -1)
{
int errsv = errno;
g_free (filesdir);
g_free (topdir);
g_free (trashname);
g_free (infofile);
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Unable to create trashing info file: %s"),
g_strerror (errsv));
return FALSE;
}
(void) g_close (fd, NULL);
/* 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)
{
int errsv = errno;
g_free (topdir);
g_free (trashname);
g_free (infofile);
g_free (trashfile);
if (errsv == EXDEV)
/* The trash dir was actually on another fs anyway!?
This can happen when the same device is mounted multiple
times, or with bind mounts of the same fs. */
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Unable to trash file: %s"),
g_strerror (errsv));
else
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Unable to trash file: %s"),
g_strerror (errsv));
return FALSE;
}
vfs = g_vfs_get_default ();
class = G_VFS_GET_CLASS (vfs);
if (class->local_file_moved)
class->local_file_moved (vfs, local->filename, trashfile);
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 = g_uri_escape_string (original_name, "/", FALSE);
g_free (original_name);
g_free (topdir);
{
time_t t;
struct tm now;
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;
}
#else /* G_OS_WIN32 */
gboolean
_g_local_file_has_trash_dir (const char *dirname, dev_t dir_dev)
{
return FALSE; /* XXX ??? */
}
static gboolean
g_local_file_trash (GFile *file,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
SHFILEOPSTRUCTW op = {0};
gboolean success;
wchar_t *wfilename;
long len;
wfilename = g_utf8_to_utf16 (local->filename, -1, NULL, &len, NULL);
/* SHFILEOPSTRUCT.pFrom is double-zero-terminated */
wfilename = g_renew (wchar_t, wfilename, len + 2);
wfilename[len + 1] = 0;
op.wFunc = FO_DELETE;
op.pFrom = wfilename;
op.fFlags = FOF_ALLOWUNDO;
success = SHFileOperationW (&op) == 0;
if (success && op.fAnyOperationsAborted)
{
if (cancellable && !g_cancellable_is_cancelled (cancellable))
g_cancellable_cancel (cancellable);
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_CANCELLED,
_("Unable to trash file: %s"),
_("Operation was cancelled"));
success = FALSE;
}
else if (!success)
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_FAILED,
_("Unable to trash file: %s"),
_("internal error"));
g_free (wfilename);
return success;
}
#endif /* G_OS_WIN32 */
static gboolean
g_local_file_make_directory (GFile *file,
GCancellable *cancellable,
GError **error)
{
GLocalFile *local = G_LOCAL_FILE (file);
if (g_mkdir (local->filename, 0777) == -1)
{
int errsv = errno;
if (errsv == EINVAL)
/* This must be an invalid filename, on e.g. FAT */
g_set_error_literal (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 creating directory: %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_literal (error, G_IO_ERROR,
G_IO_ERROR_INVALID_FILENAME,
_("Invalid filename"));
else if (errsv == EPERM)
g_set_error (error, G_IO_ERROR,
G_IO_ERROR_NOT_SUPPORTED,
_("Filesystem does not support symbolic links"));
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_literal (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_literal (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, *local_destination;
GStatBuf statbuf;
gboolean destination_exist, source_is_dir;
char *backup_name;
int res;
off_t source_size;
GVfsClass *class;
GVfs *vfs;
if (!G_IS_LOCAL_FILE (source) ||
!G_IS_LOCAL_FILE (destination))
{
/* Fall back to default move */
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, "Move not supported");
return FALSE;
}
local_source = G_LOCAL_FILE (source);
local_destination = G_LOCAL_FILE (destination);
res = g_lstat (local_source->filename, &statbuf);
if (res == -1)
{
int errsv = errno;
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error moving file: %s"),
g_strerror (errsv));
return FALSE;
}
source_is_dir = S_ISDIR (statbuf.st_mode);
source_size = statbuf.st_size;
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))
{
if (source_is_dir)
g_set_error_literal (error,
G_IO_ERROR,
G_IO_ERROR_WOULD_MERGE,
_("Can't move directory over directory"));
else
g_set_error_literal (error,
G_IO_ERROR,
G_IO_ERROR_IS_DIRECTORY,
_("Can't copy over directory"));
return FALSE;
}
}
else
{
g_set_error_literal (error,
G_IO_ERROR,
G_IO_ERROR_EXISTS,
_("Target file exists"));
return FALSE;
}
}
if (flags & G_FILE_COPY_BACKUP && destination_exist)
{
backup_name = g_strconcat (local_destination->filename, "~", NULL);
if (g_rename (local_destination->filename, backup_name) == -1)
{
g_set_error_literal (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 = g_unlink (local_destination->filename);
if (res == -1)
{
int errsv = errno;
g_set_error (error, G_IO_ERROR,
g_io_error_from_errno (errsv),
_("Error removing target file: %s"),
g_strerror (errsv));
return FALSE;
}
}
if (g_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_literal (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_literal (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;
}
vfs = g_vfs_get_default ();
class = G_VFS_GET_CLASS (vfs);
if (class->local_file_moved)
class->local_file_moved (vfs, local_source->filename, local_destination->filename);
/* Make sure we send full copied size */
if (progress_callback)
progress_callback (source_size, source_size, progress_callback_data);
return TRUE;
}
#ifdef G_OS_WIN32
static gboolean
is_remote (const gchar *filename)
{
return FALSE;
}
#else
static gboolean
is_remote_fs (const gchar *filename)
{
const char *fsname = NULL;
#ifdef USE_STATFS
struct statfs statfs_buffer;
int statfs_result = 0;
#if STATFS_ARGS == 2
statfs_result = statfs (filename, &statfs_buffer);
#elif STATFS_ARGS == 4
statfs_result = statfs (filename, &statfs_buffer, sizeof (statfs_buffer), 0);
#endif
#elif defined(USE_STATVFS)
struct statvfs statfs_buffer;
int statfs_result = 0;
statfs_result = statvfs (filename, &statfs_buffer);
#else
return FALSE;
#endif
if (statfs_result == -1)
return FALSE;
#ifdef USE_STATFS
#if defined(HAVE_STRUCT_STATFS_F_FSTYPENAME)
fsname = statfs_buffer.f_fstypename;
#else
fsname = get_fs_type (statfs_buffer.f_type);
#endif
#elif defined(USE_STATVFS) && defined(HAVE_STRUCT_STATVFS_F_BASETYPE)
fsname = statfs_buffer.f_basetype;
#endif
if (fsname != NULL)
{
if (strcmp (fsname, "nfs") == 0)
return TRUE;
if (strcmp (fsname, "nfs4") == 0)
return TRUE;
}
return FALSE;
}
static gboolean
is_remote (const gchar *filename)
{
static gboolean remote_home;
static gsize initialized;
const gchar *home;
home = g_get_home_dir ();
if (path_has_prefix (filename, home))
{
if (g_once_init_enter (&initialized))
{
remote_home = is_remote_fs (home);
g_once_init_leave (&initialized, TRUE);
}
return remote_home;
}
return FALSE;
}
#endif /* !G_OS_WIN32 */
static GFileMonitor*
g_local_file_monitor_dir (GFile *file,
GFileMonitorFlags flags,
GCancellable *cancellable,
GError **error)
{
GLocalFile* local_file = G_LOCAL_FILE(file);
return _g_local_directory_monitor_new (local_file->filename, flags, is_remote (local_file->filename), error);
}
static GFileMonitor*
g_local_file_monitor_file (GFile *file,
GFileMonitorFlags flags,
GCancellable *cancellable,
GError **error)
{
GLocalFile* local_file = G_LOCAL_FILE(file);
return _g_local_file_monitor_new (local_file->filename, flags, is_remote (local_file->filename), error);
}
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->prefix_matches = g_local_file_prefix_matches;
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_mount = g_local_file_find_enclosing_mount;
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->open_readwrite = g_local_file_open_readwrite;
iface->create_readwrite = g_local_file_create_readwrite;
iface->replace_readwrite = g_local_file_replace_readwrite;
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;
iface->supports_thread_contexts = TRUE;
}
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