| /* 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 <errno.h> |
| #include <glib.h> |
| #include <glib/gstdio.h> |
| #include <gio/gio.h> |
| #include <gio/gunixmounts.h> |
| |
| static gboolean |
| run (GError **error, |
| const gchar *argv0, |
| ...) |
| { |
| GPtrArray *args; |
| const gchar *arg; |
| va_list ap; |
| GSubprocess *subprocess; |
| gchar *command_line = NULL; |
| gboolean success; |
| |
| args = g_ptr_array_new (); |
| |
| va_start (ap, argv0); |
| g_ptr_array_add (args, (gchar *) argv0); |
| while ((arg = va_arg (ap, const gchar *))) |
| g_ptr_array_add (args, (gchar *) arg); |
| g_ptr_array_add (args, NULL); |
| va_end (ap); |
| |
| command_line = g_strjoinv (" ", (gchar **) args->pdata); |
| g_test_message ("Running command `%s`", command_line); |
| g_free (command_line); |
| |
| subprocess = g_subprocess_newv ((const gchar * const *) args->pdata, G_SUBPROCESS_FLAGS_NONE, error); |
| g_ptr_array_free (args, TRUE); |
| |
| if (subprocess == NULL) |
| return FALSE; |
| |
| success = g_subprocess_wait_check (subprocess, NULL, error); |
| g_object_unref (subprocess); |
| |
| return success; |
| } |
| |
| static void |
| assert_remove (const gchar *file) |
| { |
| if (g_remove (file) != 0) |
| g_error ("failed to remove %s: %s", file, g_strerror (errno)); |
| } |
| |
| static gboolean |
| fuse_module_loaded (void) |
| { |
| char *contents = NULL; |
| gboolean ret; |
| |
| if (!g_file_get_contents ("/proc/modules", &contents, NULL, NULL) || |
| contents == NULL) |
| { |
| g_free (contents); |
| return FALSE; |
| } |
| |
| ret = (strstr (contents, "\nfuse ") != NULL); |
| g_free (contents); |
| return ret; |
| } |
| |
| static void |
| test_filesystem_readonly (gconstpointer with_mount_monitor) |
| { |
| GFileInfo *file_info; |
| GFile *mounted_file; |
| GUnixMountMonitor *mount_monitor = NULL; |
| gchar *bindfs, *fusermount; |
| gchar *curdir, *dir_to_mount, *dir_mountpoint; |
| gchar *file_in_mount, *file_in_mountpoint; |
| GError *error = NULL; |
| |
| /* 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"); |
| g_free (fusermount); |
| g_free (bindfs); |
| return; |
| } |
| |
| /* If the fuse module is loaded but there's no /dev/fuse, then we're |
| * we're probably in a rootless container and won't be able to |
| * use bindfs to run our tests */ |
| if (fuse_module_loaded () && |
| !g_file_test ("/dev/fuse", G_FILE_TEST_EXISTS)) |
| { |
| g_test_skip ("fuse support is needed to run this test (rootless container?)"); |
| g_free (fusermount); |
| g_free (bindfs); |
| 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) */ |
| if (!run (&error, bindfs, "-n", "-o", "ro", dir_to_mount, dir_mountpoint, NULL)) |
| { |
| gchar *skip_message = g_strdup_printf ("Failed to run bindfs to set up test: %s", error->message); |
| g_test_skip (skip_message); |
| g_free (skip_message); |
| g_clear_error (&error); |
| return; |
| } |
| |
| /* 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, &error); |
| g_assert_no_error (error); |
| g_assert_nonnull (file_info); |
| 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) */ |
| run (&error, fusermount, "-z", "-u", dir_mountpoint, NULL); |
| g_assert_no_error (error); |
| run (&error, bindfs, "-n", dir_to_mount, dir_mountpoint, NULL); |
| g_assert_no_error (error); |
| |
| 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, &error); |
| g_assert_no_error (error); |
| g_assert_nonnull (file_info); |
| |
| g_assert_false (g_file_info_get_attribute_boolean (file_info, G_FILE_ATTRIBUTE_FILESYSTEM_READONLY)); |
| |
| /* Clean up */ |
| g_clear_object (&mount_monitor); |
| g_clear_object (&file_info); |
| g_clear_object (&mounted_file); |
| run (&error, fusermount, "-z", "-u", dir_mountpoint, NULL); |
| g_assert_no_error (error); |
| |
| assert_remove (file_in_mount); |
| assert_remove (dir_to_mount); |
| assert_remove (dir_mountpoint); |
| |
| g_free (bindfs); |
| g_free (fusermount); |
| g_free (curdir); |
| g_free (dir_to_mount); |
| g_free (dir_mountpoint); |
| 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 ("https://bugzilla.gnome.org/show_bug.cgi?id=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 (); |
| } |