/* Testcase for bug in GIO function g_file_query_filesystem_info() * Author: Nelson Benítez León * * This work is provided "as is"; redistribution and modification * in whole or in part, in any medium, physical or electronic is * permitted without restriction. * * This work 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. * * In no event shall the authors or contributors be liable for any * direct, indirect, incidental, special, exemplary, or consequential * damages (including, but not limited to, procurement of substitute * goods or services; loss of use, data, or profits; or business * interruption) however caused and on any theory of liability, whether * in contract, strict liability, or tort (including negligence or * otherwise) arising in any way out of the use of this software, even * if advised of the possibility of such damage. */ #include #include #include #include static void test_filesystem_readonly (gconstpointer with_mount_monitor) { GFileInfo *file_info; GFile *mounted_file; GUnixMountMonitor *mount_monitor = NULL; gchar *bindfs, *fusermount; gchar *command_mount, *command_mount_ro, *command_umount; gchar *curdir, *dir_to_mount, *dir_mountpoint; gchar *file_in_mount, *file_in_mountpoint; /* installed by package 'bindfs' in Fedora */ bindfs = g_find_program_in_path ("bindfs"); /* installed by package 'fuse' in Fedora */ fusermount = g_find_program_in_path ("fusermount"); if (bindfs == NULL || fusermount == NULL) { /* We need these because "mount --bind" requires root privileges */ g_test_skip ("'bindfs' and 'fusermount' commands are needed to run this test"); return; } curdir = g_get_current_dir (); dir_to_mount = g_strdup_printf ("%s/dir_bindfs_to_mount", curdir); file_in_mount = g_strdup_printf ("%s/example.txt", dir_to_mount); dir_mountpoint = g_strdup_printf ("%s/dir_bindfs_mountpoint", curdir); g_mkdir (dir_to_mount, 0777); g_mkdir (dir_mountpoint, 0777); if (! g_file_set_contents (file_in_mount, "Example", -1, NULL)) { g_test_skip ("Failed to create file needed to proceed further with the test"); return; } if (with_mount_monitor) mount_monitor = g_unix_mount_monitor_get (); /* Use bindfs, which does not need root privileges, to mount the contents of one dir * into another dir (and do the mount as readonly as per passed '-o ro' option) */ command_mount_ro = g_strdup_printf ("%s -n -o ro '%s' '%s'", bindfs, dir_to_mount, dir_mountpoint); g_spawn_command_line_sync (command_mount_ro, NULL, NULL, NULL, NULL); /* Let's check now, that the file is in indeed in a readonly filesystem */ file_in_mountpoint = g_strdup_printf ("%s/example.txt", dir_mountpoint); mounted_file = g_file_new_for_path (file_in_mountpoint); if (with_mount_monitor) { /* Let UnixMountMonitor process its 'mounts-changed' * signal triggered by mount operation above */ while (g_main_context_iteration (NULL, FALSE)); } file_info = g_file_query_filesystem_info (mounted_file, G_FILE_ATTRIBUTE_FILESYSTEM_READONLY, NULL, NULL); if (! g_file_info_get_attribute_boolean (file_info, G_FILE_ATTRIBUTE_FILESYSTEM_READONLY)) { g_test_skip ("Failed to create readonly file needed to proceed further with the test"); return; } /* Now we unmount, and mount again but this time rw (not readonly) */ command_umount = g_strdup_printf ("%s -u '%s'", fusermount, dir_mountpoint); g_spawn_command_line_sync (command_umount, NULL, NULL, NULL, NULL); command_mount = g_strdup_printf ("%s -n '%s' '%s'", bindfs, dir_to_mount, dir_mountpoint); g_spawn_command_line_sync (command_mount, NULL, NULL, NULL, NULL); if (with_mount_monitor) { /* Let UnixMountMonitor process its 'mounts-changed' signal * triggered by mount/umount operations above */ while (g_main_context_iteration (NULL, FALSE)); } /* Now let's test if GIO will report the new filesystem state */ g_clear_object (&file_info); g_clear_object (&mounted_file); mounted_file = g_file_new_for_path (file_in_mountpoint); file_info = g_file_query_filesystem_info (mounted_file, G_FILE_ATTRIBUTE_FILESYSTEM_READONLY, NULL, NULL); if (g_file_info_get_attribute_boolean (file_info, G_FILE_ATTRIBUTE_FILESYSTEM_READONLY)) { /* ¡¡ GIO still reports filesystem as being Readonly !! * Let's check if that's true by trying to write to file */ GFileOutputStream *write_stream; write_stream = g_file_append_to (mounted_file, G_FILE_CREATE_NONE, NULL, NULL); if (write_stream != NULL) { /* The file has been opened for writing without error, so ¡¡ GIO IS WRONG !! */ g_object_unref (write_stream); g_test_fail (); /* Marking test as FAILED */ } } /* Clean up */ g_clear_object (&mount_monitor); g_clear_object (&file_info); g_clear_object (&mounted_file); g_spawn_command_line_sync (command_umount, NULL, NULL, NULL, NULL); /* unmount */ g_remove (file_in_mount); g_remove (dir_to_mount); g_remove (dir_mountpoint); g_free (bindfs); g_free (fusermount); g_free (curdir); g_free (dir_to_mount); g_free (dir_mountpoint); g_free (command_mount); g_free (command_mount_ro); g_free (command_umount); g_free (file_in_mount); g_free (file_in_mountpoint); } int main (int argc, char *argv[]) { /* To avoid unnecessary D-Bus calls, see http://goo.gl/ir56j2 */ g_setenv ("GIO_USE_VFS", "local", FALSE); g_test_init (&argc, &argv, NULL); g_test_bug_base ("http://bugzilla.gnome.org/"); g_test_bug ("787731"); g_test_add_data_func ("/g-file-info-filesystem-readonly/test-fs-ro", GINT_TO_POINTER (FALSE), test_filesystem_readonly); /* This second test is using a running GUnixMountMonitor, so the calls to: * g_unix_mount_get(&time_read) - To fill the time_read parameter * g_unix_mounts_changed_since() * * made from inside g_file_query_filesystem_info() will use the mount_poller_time * from the monitoring of /proc/self/mountinfo , while in the previous test new * created timestamps are returned from those g_unix_mount* functions. */ g_test_add_data_func ("/g-file-info-filesystem-readonly/test-fs-ro-with-mount-monitor", GINT_TO_POINTER (TRUE), test_filesystem_readonly); return g_test_run (); }