/* GIO - GLib Input, Output and Streaming Library * * Copyright (C) 2006-2007 Red Hat, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General * Public License along with this library; if not, see . * * Author: Alexander Larsson */ #include "config.h" #include #include #include #include #include #if G_OS_UNIX #include #include #endif #if HAVE_SYS_STATFS_H #include #endif #if HAVE_SYS_STATVFS_H #include #endif #if HAVE_SYS_VFS_H #include #elif HAVE_SYS_MOUNT_H #if HAVE_SYS_PARAM_H #include #endif #include #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 "glocalfilemonitor.h" #include "gmountprivate.h" #include "gunixmounts.h" #include "gioerror.h" #include #include #include "glibintl.h" #ifdef G_OS_UNIX #include "glib-unix.h" #include "gportalsupport.h" #include "gtrashportal.h" #endif #include "glib-private.h" #ifdef G_OS_WIN32 #include #include #include #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 #ifndef ECANCELED #define ECANCELED 105 #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, gboolean resolve_basename_symlink); #ifndef G_OS_WIN32 static gboolean is_remote_fs_type (const gchar *fsname); #endif 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 G_OS_UNIX 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; } GFile * _g_local_file_new (const char *filename) { GLocalFile *local; local = g_object_new (G_TYPE_LOCAL_FILE, NULL); local->filename = g_canonicalize_filename (filename, NULL); return G_FILE (local); } /*< internal > * g_local_file_new_from_dirname_and_basename: * @dirname: an absolute, canonical directory name * @basename: the name of a child inside @dirname * * Creates a #GFile from @dirname and @basename. * * This is more efficient than pasting the fields together for yourself * and creating a #GFile from the result, and also more efficient than * creating a #GFile for the dirname and using g_file_get_child(). * * @dirname must be canonical, as per GLocalFile's opinion of what * canonical means. This means that you should only pass strings that * were returned by _g_local_file_get_filename(). * * Returns: a #GFile */ GFile * g_local_file_new_from_dirname_and_basename (const gchar *dirname, const gchar *basename) { GLocalFile *local; g_return_val_if_fail (dirname != NULL, NULL); g_return_val_if_fail (basename && basename[0] && !strchr (basename, '/'), NULL); local = g_object_new (G_TYPE_LOCAL_FILE, NULL); local->filename = g_build_filename (dirname, basename, NULL); 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; local->filename is guaranteed to be absolute, so * g_path_skip_root() should never return NULL. */ non_root = g_path_skip_root (local->filename); g_assert (non_root != NULL); 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 0x62646576: return "bdevfs"; case 0x42465331: return "befs"; case 0x1BADFACE: return "bfs"; case 0x42494e4d: return "binfmt_misc"; case 0x9123683E: return "btrfs"; case 0x73727279: return "btrfs_test_fs"; case 0x27e0eb: return "cgroup"; case 0x63677270: return "cgroup2"; case 0xFF534D42: return "cifs"; case 0x73757245: return "coda"; case 0x012FF7B7: return "coh"; case 0x62656570: return "configfs"; case 0x28cd3d45: return "cramfs"; case 0x64626720: return "debugfs"; case 0x1373: return "devfs"; case 0x1cd1: return "devpts"; case 0xf15f: return "ecryptfs"; case 0xde5e81e4: return "efivarfs"; case 0x00414A53: return "efs"; case 0x137D: return "ext"; case 0xEF51: return "ext2"; case 0xEF53: return "ext3/ext4"; case 0xF2F52010: return "f2fs"; case 0x65735546: return "fuse"; case 0x65735543: return "fusectl"; case 0xBAD1DEA: return "futexfs"; case 0x4244: return "hfs"; case 0x00c0ffee: return "hostfs"; 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 0x4d5a: return "minix3"; case 0x19800202: return "mqueue"; case 0x4d44: return "msdos"; case 0x564c: return "ncp"; case 0x6969: return "nfs"; case 0x3434: return "nilfs"; case 0x6e736673: return "nsfs"; case 0x5346544e: return "ntfs"; case 0x7461636f: return "ocfs2"; case 0x9fa1: return "openprom"; case 0x794c7630: return "overlay"; case 0x50495045: return "pipefs"; case 0x9fa0: return "proc"; case 0x6165676C: return "pstore"; case 0x002f: return "qnx4"; case 0x68191122: return "qnx6"; case 0x858458f6: return "ramfs"; case 0x52654973: return "reiserfs"; case 0x7275: return "romfs"; case 0x67596969: return "rpc_pipefs"; case 0x73636673: return "securityfs"; case 0xf97cff8c: return "selinuxfs"; case 0x43415d53: return "smackfs"; case 0x517B: return "smb"; case 0xfe534d42: return "smb2"; case 0x534F434B: return "sockfs"; case 0x73717368: return "squashfs"; case 0x62656572: return "sysfs"; case 0x012FF7B6: return "sysv2"; case 0x012FF7B5: return "sysv4"; case 0x01021994: return "tmpfs"; case 0x74726163: return "tracefs"; case 0x15013346: return "udf"; case 0x00011954: return "ufs"; case 0x9fa2: return "usbdevice"; case 0x01021997: return "v9fs"; case 0xa501FCF5: return "vxfs"; case 0xabba1974: return "xenfs"; 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, FALSE); 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 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, gboolean resolve_basename_symlink) { 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) { 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); } g_free (rootdir); } #endif /* G_OS_WIN32 */ #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wformat-nonliteral" static void g_set_io_error (GError **error, const gchar *msg, GFile *file, gint errsv) { GLocalFile *local = G_LOCAL_FILE (file); gchar *display_name; display_name = g_filename_display_name (local->filename); g_set_error (error, G_IO_ERROR, g_io_error_from_errno (errsv), msg, display_name, g_strerror (errsv)); g_free (display_name); } #pragma GCC diagnostic pop 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", but only on file systems * which are known to not support this (otherwise we can omit metadata for * systems which are legitimately full). */ #if defined(__linux__) if (statfs_result == 0 && statfs_buffer.f_bavail == 0 && statfs_buffer.f_bfree == 0 && (/* linux/ncp_fs.h: NCP_SUPER_MAGIC == 0x564c */ statfs_buffer.f_type == 0x564c || /* man statfs: FUSE_SUPER_MAGIC == 0x65735546 */ statfs_buffer.f_type == 0x65735546)) no_size = TRUE; #endif /* __linux__ */ #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_io_error (error, _("Error getting filesystem info for %s: %s"), file, 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 = 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 = statfs_buffer.f_fstypename; #elif defined(HAVE_STRUCT_STATVFS_F_BASETYPE) fstype = 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 */ } #ifndef G_OS_WIN32 if (g_file_attribute_matcher_matches (attribute_matcher, G_FILE_ATTRIBUTE_FILESYSTEM_REMOTE)) g_file_info_set_attribute_boolean (info, G_FILE_ATTRIBUTE_FILESYSTEM_REMOTE, is_remote_fs_type (fstype)); #endif 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) goto error; mountpoint = find_mountpoint_for (local->filename, buf.st_dev, FALSE); if (mountpoint == NULL) goto error; mount = _g_mount_get_for_mount_path (mountpoint, cancellable); g_free (mountpoint); if (mount) return mount; error: g_set_io_error (error, /* Translators: This is an error message when trying to find * the enclosing (user visible) mount of a file, but none * exists. */ _("Containing mount for file %s not found"), file, 0); 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_io_error (error, _("Error renaming file %s: %s"), new_file, 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 here, * 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_io_error (error, _("Error renaming file %s: %s"), file, 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) { /* Exploit the fact that on W32 the glib filename encoding is UTF8 */ ret = GLIB_PRIVATE_CALL (g_win32_stat_utf8) (local->filename, &buf); if (ret == 0 && S_ISDIR (buf.st_mode)) errsv = EISDIR; } #endif g_set_io_error (error, _("Error opening file %s: %s"), file, errsv); return NULL; } ret = g_local_file_fstat (fd, G_LOCAL_FILE_STAT_FIELD_TYPE, G_LOCAL_FILE_STAT_FIELD_ALL, &buf); if (ret == 0 && S_ISDIR (_g_stat_mode (&buf))) { (void) g_close (fd, NULL); g_set_io_error (error, _("Error opening file %s: %s"), file, EISDIR); 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 clearer error is G_IO_ERROR_NOT_FOUND, and it's what nautilus expects */ if (errsv == EEXIST) errsv = ENOTEMPTY; g_set_io_error (error, _("Error removing file %s: %s"), file, 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 gssize 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 g_canonicalize_filename (symlink_value, NULL); 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 = g_canonicalize_filename (resolved, NULL); g_free (resolved); return canonical; } } static char * expand_symlinks (const char *path, dev_t *dev) { char *tmp, *target; GStatBuf target_stat; int num_recursions; target = g_strdup (path); num_recursions = 0; do { if (g_lstat (target, &target_stat) != 0) { g_free (target); return NULL; } if (S_ISLNK (target_stat.st_mode)) { tmp = target; target = expand_symlink (target); g_free (tmp); } num_recursions++; #ifdef MAXSYMLINKS if (num_recursions > MAXSYMLINKS) #else /* 40 is used in kernel sources currently: * https://github.com/torvalds/linux/include/linux/namei.h */ if (num_recursions > 40) #endif { g_free (target); return NULL; } } while (S_ISLNK (target_stat.st_mode)); if (dev) *dev = target_stat.st_dev; return target; } static char * get_parent (const char *path, dev_t *parent_dev) { char *parent, *res; char *path_copy; path_copy = strip_trailing_slashes (path); parent = g_path_get_dirname (path_copy); if (strcmp (parent, ".") == 0) { g_free (parent); g_free (path_copy); return NULL; } g_free (path_copy); res = expand_symlinks (parent, parent_dev); g_free (parent); return res; } 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 == NULL) return NULL; if (g_strcmp0 (parent, "/") != 0) { parent_expanded = expand_all_symlinks (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); g_free (parent); return res; } static char * find_mountpoint_for (const char *file, dev_t dev, gboolean resolve_basename_symlink) { char *dir, *parent; dev_t dir_dev, parent_dev; if (resolve_basename_symlink) { dir = expand_symlinks (file, NULL); if (dir == NULL) return NULL; } else dir = g_strdup (file); dir_dev = dev; while (g_strcmp0 (dir, "/") != 0) { parent = get_parent (dir, &parent_dev); if (parent == NULL) { g_free (dir); return NULL; } if (parent_dev != dir_dev) { g_free (parent); return dir; } g_free (dir); dir = parent; } return dir; } char * _g_local_file_find_topdir_for (const char *file) { char *dir; char *mountpoint = NULL; dev_t dir_dev; dir = get_parent (file, &dir_dev); if (dir == NULL) return NULL; mountpoint = find_mountpoint_for (dir, dir_dev, TRUE); g_free (dir); return mountpoint; } 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 (path2 != NULL && base2 != NULL && 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 gboolean ignore_trash_mount (GUnixMountEntry *mount) { GUnixMountPoint *mount_point = NULL; const gchar *mount_options; gboolean retval = TRUE; if (g_unix_mount_is_system_internal (mount)) return TRUE; mount_options = g_unix_mount_get_options (mount); if (mount_options == NULL) { mount_point = g_unix_mount_point_at (g_unix_mount_get_mount_path (mount), NULL); if (mount_point != NULL) mount_options = g_unix_mount_point_get_options (mount_point); } if (mount_options == NULL || strstr (mount_options, "x-gvfs-notrash") == NULL) retval = FALSE; g_clear_pointer (&mount_point, g_unix_mount_point_free); return retval; } static gboolean ignore_trash_path (const gchar *topdir) { GUnixMountEntry *mount; gboolean retval = TRUE; mount = g_unix_mount_at (topdir, NULL); if (mount == NULL) goto out; retval = ignore_trash_mount (mount); out: g_clear_pointer (&mount, g_unix_mount_free); return retval; } 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; static gboolean home_dev_valid = FALSE; 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; if (g_stat (g_get_home_dir (), &home_stat) == 0) { home_dev = home_stat.st_dev; home_dev_valid = TRUE; } else { home_dev_valid = FALSE; } g_once_init_leave (&home_dev_set, 1); } /* Assume we can trash to the home */ if (!home_dev_valid) return FALSE; else if (dir_dev == home_dev) return TRUE; topdir = find_mountpoint_for (dirname, dir_dev, TRUE); if (topdir == NULL) return FALSE; if (ignore_trash_path (topdir)) { g_free (topdir); 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, FALSE); 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; char *path; gboolean is_homedir_trash; char *delete_time = NULL; int fd; GStatBuf trash_stat, global_stat; char *dirname, *globaldir; GVfsClass *class; GVfs *vfs; int errsv; if (glib_should_use_portal ()) return g_trash_portal_trash_file (file, error); if (g_lstat (local->filename, &file_stat) != 0) { errsv = errno; g_set_io_error (error, _("Error trashing file %s: %s"), file, errsv); return FALSE; } homedir = g_get_home_dir (); if (g_stat (homedir, &home_stat) != 0) { errsv = errno; g_set_io_error (error, _("Error trashing file %s: %s"), file, errsv); return FALSE; } is_homedir_trash = FALSE; trashdir = NULL; /* On overlayfs, a file's st_dev will be different to the home directory's. * We still want to create our trash directory under the home directory, so * instead we should stat the directory that the file we're deleting is in as * this will have the same st_dev. */ if (!S_ISDIR (file_stat.st_mode)) { path = g_path_get_dirname (local->filename); /* If the parent is a symlink to a different device then it might have * st_dev equal to the home directory's, in which case we will end up * trying to rename across a filesystem boundary, which doesn't work. So * we use g_stat here instead of g_lstat, to know where the symlink * points to. */ g_stat (path, &file_stat); g_free (path); } 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; 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 = _g_local_file_find_topdir_for (local->filename); if (topdir == NULL) { g_set_io_error (error, _("Unable to find toplevel directory to trash %s"), file, ENOTSUP); return FALSE; } if (ignore_trash_path (topdir)) { g_set_error (error, G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED, _("Trashing on system internal mounts is not supported")); g_free (topdir); 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_io_error (error, _("Unable to find or create trash directory for %s"), file, G_IO_ERROR_NOT_SUPPORTED); 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_io_error (error, _("Unable to find or create trash directory for %s"), file, G_IO_ERROR_NOT_SUPPORTED); 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); errsv = errno; } while (fd == -1 && errsv == EEXIST); g_free (basename); g_free (infodir); if (fd == -1) { errsv = errno; g_free (filesdir); g_free (topdir); g_free (trashname); g_free (infofile); g_set_io_error (error, _("Unable to create trashing info file for %s: %s"), file, errsv); return FALSE; } (void) g_close (fd, NULL); /* Write the full content of the info file before trashing to make * sure someone doesn't read an empty file. See #749314 */ /* 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); { GDateTime *now = g_date_time_new_now_local (); if (now != NULL) delete_time = g_date_time_format (now, "%Y-%m-%dT%H:%M:%S"); else delete_time = g_strdup ("9999-12-31T23:59:59"); g_date_time_unref (now); } data = g_strdup_printf ("[Trash Info]\nPath=%s\nDeletionDate=%s\n", original_name_escaped, delete_time); g_free (delete_time); g_file_set_contents_full (infofile, data, -1, G_FILE_SET_CONTENTS_CONSISTENT | G_FILE_SET_CONTENTS_ONLY_EXISTING, 0600, 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) { errsv = errno; g_unlink (infofile); 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_io_error (error, _("Unable to trash file %s across filesystem boundaries"), file, ENOTSUP); else g_set_io_error (error, _("Unable to trash file %s: %s"), file, 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? */ 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_io_error (error, _("Unable to trash file %s: %s"), file, ECANCELED); success = FALSE; } else if (!success) g_set_io_error (error, _("Unable to trash file %s"), file, 0); 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_io_error (error, _("Error creating directory %s: %s"), file, errsv); return FALSE; } return TRUE; } #ifdef HAVE_SYMLINK static gboolean g_local_file_make_symbolic_link (GFile *file, const char *symlink_value, GCancellable *cancellable, GError **error) { 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_io_error (error, _("Error making symbolic link %s: %s"), file, errsv); return FALSE; } return TRUE; } #endif 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_io_error (error, _("Error moving file %s: %s"), source, 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_io_error (error, _("Error moving file %s: %s"), source, EEXIST); 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_io_error (error, _("Error moving file %s: %s"), source, 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 gboolean g_local_file_is_nfs_home (const gchar *filename) { return FALSE; } #else static gboolean is_remote_fs_type (const gchar *fsname) { if (fsname != NULL) { if (strcmp (fsname, "nfs") == 0) return TRUE; if (strcmp (fsname, "nfs4") == 0) return TRUE; if (strcmp (fsname, "cifs") == 0) return TRUE; if (strcmp (fsname, "smb") == 0) return TRUE; if (strcmp (fsname, "smb2") == 0) return TRUE; } return FALSE; } gboolean g_local_file_is_nfs_home (const gchar *filename) { static gboolean remote_home = FALSE; static gsize initialized; const gchar *home; home = g_get_home_dir (); if (path_has_prefix (filename, home)) { if (g_once_init_enter (&initialized)) { GFile *file; GFileInfo *info; const gchar *fs_type = NULL; file = _g_local_file_new (home); info = g_local_file_query_filesystem_info (file, G_FILE_ATTRIBUTE_FILESYSTEM_TYPE, NULL, NULL); if (info != NULL) fs_type = g_file_info_get_attribute_string (info, G_FILE_ATTRIBUTE_FILESYSTEM_TYPE); if (g_strcmp0 (fs_type, "nfs") == 0 || g_strcmp0 (fs_type, "nfs4") == 0) remote_home = TRUE; g_clear_object (&info); g_object_unref (file); 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_file_monitor_new_for_path (local_file->filename, TRUE, flags, 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_for_path (local_file->filename, FALSE, flags, error); } /* Here is the GLocalFile implementation of g_file_measure_disk_usage(). * * If available, we use fopenat() in preference to filenames for * efficiency and safety reasons. We know that fopenat() is available * based on if AT_FDCWD is defined. POSIX guarantees that this will be * defined as a macro. * * We use a linked list of stack-allocated GSList nodes in order to be * able to reconstruct the filename for error messages. We actually * pass the filename to operate on through the top node of the list. * * In case we're using openat(), this top filename will be a basename * which should be opened in the directory which has also had its fd * passed along. If we're not using openat() then it will be a full * absolute filename. */ static gboolean g_local_file_measure_size_error (GFileMeasureFlags flags, gint saved_errno, GSList *name, GError **error) { /* Only report an error if we were at the toplevel or if the caller * requested reporting of all errors. */ if ((name->next == NULL) || (flags & G_FILE_MEASURE_REPORT_ANY_ERROR)) { GString *filename; GSList *node; /* Skip some work if there is no error return */ if (!error) return FALSE; #ifdef AT_FDCWD /* If using openat() we need to rebuild the filename for the message */ filename = g_string_new (name->data); for (node = name->next; node; node = node->next) { gchar *utf8; g_string_prepend_c (filename, G_DIR_SEPARATOR); utf8 = g_filename_display_name (node->data); g_string_prepend (filename, utf8); g_free (utf8); } #else { gchar *utf8; /* Otherwise, we already have it, so just use it. */ node = name; filename = g_string_new (NULL); utf8 = g_filename_display_name (node->data); g_string_append (filename, utf8); g_free (utf8); } #endif g_set_error (error, G_IO_ERROR, g_io_error_from_errno (saved_errno), _("Could not determine the disk usage of %s: %s"), filename->str, g_strerror (saved_errno)); g_string_free (filename, TRUE); return FALSE; } else /* We're not reporting this error... */ return TRUE; } typedef struct { GFileMeasureFlags flags; dev_t contained_on; GCancellable *cancellable; GFileMeasureProgressCallback progress_callback; gpointer progress_data; guint64 disk_usage; guint64 num_dirs; guint64 num_files; guint64 last_progress_report; } MeasureState; static gboolean g_local_file_measure_size_of_contents (gint fd, GSList *dir_name, MeasureState *state, GError **error); static gboolean g_local_file_measure_size_of_file (gint parent_fd, GSList *name, MeasureState *state, GError **error) { GLocalFileStat buf; if (g_cancellable_set_error_if_cancelled (state->cancellable, error)) return FALSE; #if defined (AT_FDCWD) if (g_local_file_fstatat (parent_fd, name->data, AT_SYMLINK_NOFOLLOW, G_LOCAL_FILE_STAT_FIELD_BASIC_STATS, G_LOCAL_FILE_STAT_FIELD_ALL & (~G_LOCAL_FILE_STAT_FIELD_ATIME), &buf) != 0) { int errsv = errno; return g_local_file_measure_size_error (state->flags, errsv, name, error); } #elif defined (HAVE_LSTAT) || !defined (G_OS_WIN32) if (g_lstat (name->data, &buf) != 0) { int errsv = errno; return g_local_file_measure_size_error (state->flags, errsv, name, error); } #else /* !AT_FDCWD && !HAVE_LSTAT && G_OS_WIN32 */ if (GLIB_PRIVATE_CALL (g_win32_lstat_utf8) (name->data, &buf) != 0) { int errsv = errno; return g_local_file_measure_size_error (state->flags, errsv, name, error); } #endif if (name->next) { /* If not at the toplevel, check for a device boundary. */ if (state->flags & G_FILE_MEASURE_NO_XDEV) if (state->contained_on != _g_stat_dev (&buf)) return TRUE; } else { /* If, however, this is the toplevel, set the device number so * that recursive invocations can compare against it. */ state->contained_on = _g_stat_dev (&buf); } #if defined (G_OS_WIN32) if (~state->flags & G_FILE_MEASURE_APPARENT_SIZE) state->disk_usage += buf.allocated_size; else #elif defined (HAVE_STRUCT_STAT_ST_BLOCKS) if (~state->flags & G_FILE_MEASURE_APPARENT_SIZE) state->disk_usage += _g_stat_blocks (&buf) * G_GUINT64_CONSTANT (512); else #endif state->disk_usage += _g_stat_size (&buf); if (S_ISDIR (_g_stat_mode (&buf))) state->num_dirs++; else state->num_files++; if (state->progress_callback) { /* We could attempt to do some cleverness here in order to avoid * calling clock_gettime() so much, but we're doing stats and opens * all over the place already... */ if (state->last_progress_report) { guint64 now; now = g_get_monotonic_time (); if (state->last_progress_report + 200 * G_TIME_SPAN_MILLISECOND < now) { (* state->progress_callback) (TRUE, state->disk_usage, state->num_dirs, state->num_files, state->progress_data); state->last_progress_report = now; } } else { /* We must do an initial report to inform that more reports * will be coming. */ (* state->progress_callback) (TRUE, 0, 0, 0, state->progress_data); state->last_progress_report = g_get_monotonic_time (); } } if (S_ISDIR (_g_stat_mode (&buf))) { int dir_fd = -1; #ifdef AT_FDCWD int errsv; #endif if (g_cancellable_set_error_if_cancelled (state->cancellable, error)) return FALSE; #ifdef AT_FDCWD #ifdef HAVE_OPEN_O_DIRECTORY dir_fd = openat (parent_fd, name->data, O_RDONLY|O_DIRECTORY); #else dir_fd = openat (parent_fd, name->data, O_RDONLY); #endif errsv = errno; if (dir_fd < 0) return g_local_file_measure_size_error (state->flags, errsv, name, error); #endif if (!g_local_file_measure_size_of_contents (dir_fd, name, state, error)) return FALSE; } return TRUE; } static gboolean g_local_file_measure_size_of_contents (gint fd, GSList *dir_name, MeasureState *state, GError **error) { gboolean success = TRUE; const gchar *name; GDir *dir; #ifdef AT_FDCWD { /* If this fails, we want to preserve the errno from fopendir() */ DIR *dirp; dirp = fdopendir (fd); dir = dirp ? GLIB_PRIVATE_CALL(g_dir_new_from_dirp) (dirp) : NULL; } #else dir = GLIB_PRIVATE_CALL(g_dir_open_with_errno) (dir_name->data, 0); #endif if (dir == NULL) { gint saved_errno = errno; #ifdef AT_FDCWD close (fd); #endif return g_local_file_measure_size_error (state->flags, saved_errno, dir_name, error); } while (success && (name = g_dir_read_name (dir))) { GSList node; node.next = dir_name; #ifdef AT_FDCWD node.data = (gchar *) name; #else node.data = g_build_filename (dir_name->data, name, NULL); #endif success = g_local_file_measure_size_of_file (fd, &node, state, error); #ifndef AT_FDCWD g_free (node.data); #endif } g_dir_close (dir); return success; } static gboolean g_local_file_measure_disk_usage (GFile *file, GFileMeasureFlags flags, GCancellable *cancellable, GFileMeasureProgressCallback progress_callback, gpointer progress_data, guint64 *disk_usage, guint64 *num_dirs, guint64 *num_files, GError **error) { GLocalFile *local_file = G_LOCAL_FILE (file); MeasureState state = { 0, }; gint root_fd = -1; GSList node; state.flags = flags; state.cancellable = cancellable; state.progress_callback = progress_callback; state.progress_data = progress_data; #ifdef AT_FDCWD root_fd = AT_FDCWD; #endif node.data = local_file->filename; node.next = NULL; if (!g_local_file_measure_size_of_file (root_fd, &node, &state, error)) return FALSE; if (disk_usage) *disk_usage = state.disk_usage; if (num_dirs) *num_dirs = state.num_dirs; if (num_files) *num_files = state.num_files; return TRUE; } 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; #ifdef HAVE_SYMLINK iface->make_symbolic_link = g_local_file_make_symbolic_link; #endif iface->move = g_local_file_move; iface->monitor_dir = g_local_file_monitor_dir; iface->monitor_file = g_local_file_monitor_file; iface->measure_disk_usage = g_local_file_measure_disk_usage; iface->supports_thread_contexts = TRUE; }