diff options
Diffstat (limited to 'plugins/housekeeping/gsd-disk-space.c')
| -rw-r--r-- | plugins/housekeeping/gsd-disk-space.c | 1081 |
1 files changed, 1081 insertions, 0 deletions
diff --git a/plugins/housekeeping/gsd-disk-space.c b/plugins/housekeeping/gsd-disk-space.c new file mode 100644 index 0000000..c5ae8f6 --- /dev/null +++ b/plugins/housekeeping/gsd-disk-space.c @@ -0,0 +1,1081 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- + * vim: set et sw=8 ts=8: + * + * Copyright (c) 2008, Novell, Inc. + * + * Authors: Vincent Untz <vuntz@gnome.org> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program 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 General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + * + */ + +#include "config.h" + +#include <sys/statvfs.h> +#include <time.h> +#include <unistd.h> + +#include <glib.h> +#include <glib/gi18n.h> +#include <glib-object.h> +#include <gio/gunixmounts.h> +#include <gio/gio.h> +#include <gtk/gtk.h> +#include <libnotify/notify.h> + +#include "gsd-disk-space.h" +#include "gsd-disk-space-helper.h" + +#define GIGABYTE 1024 * 1024 * 1024 + +#define CHECK_EVERY_X_SECONDS 60 + +#define DISK_SPACE_ANALYZER "baobab" + +#define SETTINGS_HOUSEKEEPING_DIR "org.gnome.settings-daemon.plugins.housekeeping" +#define SETTINGS_FREE_PC_NOTIFY_KEY "free-percent-notify" +#define SETTINGS_FREE_PC_NOTIFY_AGAIN_KEY "free-percent-notify-again" +#define SETTINGS_FREE_SIZE_NO_NOTIFY "free-size-gb-no-notify" +#define SETTINGS_MIN_NOTIFY_PERIOD "min-notify-period" +#define SETTINGS_IGNORE_PATHS "ignore-paths" + +#define PRIVACY_SETTINGS "org.gnome.desktop.privacy" +#define SETTINGS_PURGE_TRASH "remove-old-trash-files" +#define SETTINGS_PURGE_TEMP_FILES "remove-old-temp-files" +#define SETTINGS_PURGE_AFTER "old-files-age" + +typedef struct +{ + GUnixMountEntry *mount; + struct statvfs buf; + time_t notify_time; +} LdsmMountInfo; + +static GHashTable *ldsm_notified_hash = NULL; +static unsigned int ldsm_timeout_id = 0; +static GUnixMountMonitor *ldsm_monitor = NULL; +static double free_percent_notify = 0.05; +static double free_percent_notify_again = 0.01; +static unsigned int free_size_gb_no_notify = 2; +static unsigned int min_notify_period = 10; +static GSList *ignore_paths = NULL; +static GSettings *settings = NULL; +static GSettings *privacy_settings = NULL; +static NotifyNotification *notification = NULL; + +static guint64 *time_read; + +static gboolean purge_trash; +static gboolean purge_temp_files; +static guint purge_after; +static guint purge_trash_id = 0; +static guint purge_temp_id = 0; + +static gchar* +ldsm_get_fs_id_for_path (const gchar *path) +{ + GFile *file; + GFileInfo *fileinfo; + gchar *attr_id_fs; + + file = g_file_new_for_path (path); + fileinfo = g_file_query_info (file, G_FILE_ATTRIBUTE_ID_FILESYSTEM, G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, NULL, NULL); + if (fileinfo) { + attr_id_fs = g_strdup (g_file_info_get_attribute_string (fileinfo, G_FILE_ATTRIBUTE_ID_FILESYSTEM)); + g_object_unref (fileinfo); + } else { + attr_id_fs = NULL; + } + + g_object_unref (file); + + return attr_id_fs; +} + +static gboolean +ldsm_mount_has_trash (const char *path) +{ + const gchar *user_data_dir; + gchar *user_data_attr_id_fs; + gchar *path_attr_id_fs; + gboolean mount_uses_user_trash = FALSE; + gchar *trash_files_dir; + gboolean has_trash = FALSE; + GDir *dir; + + user_data_dir = g_get_user_data_dir (); + user_data_attr_id_fs = ldsm_get_fs_id_for_path (user_data_dir); + + path_attr_id_fs = ldsm_get_fs_id_for_path (path); + + if (g_strcmp0 (user_data_attr_id_fs, path_attr_id_fs) == 0) { + /* The volume that is low on space is on the same volume as our home + * directory. This means the trash is at $XDG_DATA_HOME/Trash, + * not at the root of the volume which is full. + */ + mount_uses_user_trash = TRUE; + } + + g_free (user_data_attr_id_fs); + g_free (path_attr_id_fs); + + /* I can't think of a better way to find out if a volume has any trash. Any suggestions? */ + if (mount_uses_user_trash) { + trash_files_dir = g_build_filename (g_get_user_data_dir (), "Trash", "files", NULL); + } else { + gchar *uid; + + uid = g_strdup_printf ("%d", getuid ()); + trash_files_dir = g_build_filename (path, ".Trash", uid, "files", NULL); + if (!g_file_test (trash_files_dir, G_FILE_TEST_IS_DIR)) { + gchar *trash_dir; + + g_free (trash_files_dir); + trash_dir = g_strdup_printf (".Trash-%s", uid); + trash_files_dir = g_build_filename (path, trash_dir, "files", NULL); + g_free (trash_dir); + if (!g_file_test (trash_files_dir, G_FILE_TEST_IS_DIR)) { + g_free (trash_files_dir); + g_free (uid); + return has_trash; + } + } + g_free (uid); + } + + dir = g_dir_open (trash_files_dir, 0, NULL); + if (dir) { + if (g_dir_read_name (dir)) + has_trash = TRUE; + g_dir_close (dir); + } + + g_free (trash_files_dir); + + return has_trash; +} + +static void +ldsm_analyze_path (const gchar *path) +{ + const gchar *argv[] = { DISK_SPACE_ANALYZER, path, NULL }; + + g_spawn_async (NULL, (gchar **) argv, NULL, G_SPAWN_SEARCH_PATH, + NULL, NULL, NULL, NULL); +} + +static void +ignore_callback (NotifyNotification *n, + const char *action) +{ + g_assert (action != NULL); + g_assert (strcmp (action, "ignore") == 0); + + /* Do nothing */ + + notify_notification_close (n, NULL); +} + +static void +examine_callback (NotifyNotification *n, + const char *action, + const char *path) +{ + g_assert (action != NULL); + g_assert (strcmp (action, "examine") == 0); + + ldsm_analyze_path (path); + + notify_notification_close (n, NULL); +} + +static gboolean +should_purge_file (GFile *file, + GCancellable *cancellable, + GDateTime *old) +{ + GFileInfo *info; + GDateTime *date; + gboolean should_purge; + + should_purge = FALSE; + + info = g_file_query_info (file, + G_FILE_ATTRIBUTE_TRASH_DELETION_DATE "," + G_FILE_ATTRIBUTE_UNIX_UID "," + G_FILE_ATTRIBUTE_TIME_CHANGED, + G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, + cancellable, + NULL); + if (!info) + return FALSE; + + date = g_file_info_get_deletion_date (info); + if (date == NULL) { + guint uid; + guint64 ctime; + + uid = g_file_info_get_attribute_uint32 (info, G_FILE_ATTRIBUTE_UNIX_UID); + if (uid != getuid ()) { + should_purge = FALSE; + goto out; + } + + ctime = g_file_info_get_attribute_uint64 (info, G_FILE_ATTRIBUTE_TIME_CHANGED); + date = g_date_time_new_from_unix_local ((gint64) ctime); + } + + should_purge = g_date_time_difference (old, date) >= 0; + g_date_time_unref (date); + +out: + g_object_unref (info); + + return should_purge; +} + +DeleteData * +delete_data_new (GFile *file, + GCancellable *cancellable, + GDateTime *old, + gboolean dry_run, + gboolean trash, + gint depth, + const char *filesystem) +{ + DeleteData *data; + + data = g_new (DeleteData, 1); + g_ref_count_init (&data->ref_count); + data->file = g_object_ref (file); + data->filesystem = g_strdup (filesystem); + data->cancellable = cancellable ? g_object_ref (cancellable) : NULL; + data->old = g_date_time_ref (old); + data->dry_run = dry_run; + data->trash = trash; + data->depth = depth; + data->name = g_file_get_parse_name (data->file); + + return data; +} + +char* +get_filesystem (GFile *file) +{ + g_autoptr(GFileInfo) info = NULL; + + info = g_file_query_info (file, + G_FILE_ATTRIBUTE_ID_FILESYSTEM, + G_FILE_QUERY_INFO_NONE, + NULL, + NULL); + + return g_file_info_get_attribute_as_string (info, + G_FILE_ATTRIBUTE_ID_FILESYSTEM); +} + +static DeleteData * +delete_data_ref (DeleteData *data) +{ + g_ref_count_inc (&data->ref_count); + + return data; +} + +void +delete_data_unref (DeleteData *data) +{ + if (g_ref_count_dec (&data->ref_count)) { + g_object_unref (data->file); + if (data->cancellable) + g_object_unref (data->cancellable); + g_date_time_unref (data->old); + g_free (data->name); + g_free (data->filesystem); + g_free (data); + } +} + +static void +delete_batch (GObject *source, + GAsyncResult *res, + gpointer user_data) +{ + GFileEnumerator *enumerator = G_FILE_ENUMERATOR (source); + DeleteData *data = user_data; + const char *fs; + GList *files, *f; + GFile *child_file; + DeleteData *child; + GFileInfo *info; + GError *error = NULL; + + files = g_file_enumerator_next_files_finish (enumerator, res, &error); + + g_debug ("GsdHousekeeping: purging %d children of %s", g_list_length (files), data->name); + + if (files) { + for (f = files; f; f = f->next) { + if (g_cancellable_is_cancelled (data->cancellable)) + break; + info = f->data; + + fs = g_file_info_get_attribute_string (info, + G_FILE_ATTRIBUTE_ID_FILESYSTEM); + + /* Do not consider the file if it is on a different file system. + * Ignore data->filesystem if it is NULL (this only happens if + * it is the toplevel trash directory). */ + if (data->filesystem && g_strcmp0 (fs, data->filesystem) != 0) { + g_debug ("GsdHousekeeping: skipping file \"%s\" as it is on a different file system", + g_file_info_get_name (info)); + continue; + } + + child_file = g_file_get_child (data->file, g_file_info_get_name (info)); + child = delete_data_new (child_file, + data->cancellable, + data->old, + data->dry_run, + data->trash, + data->depth + 1, + fs); + delete_recursively_by_age (child); + delete_data_unref (child); + g_object_unref (child_file); + } + g_list_free_full (files, g_object_unref); + if (!g_cancellable_is_cancelled (data->cancellable)) { + g_file_enumerator_next_files_async (enumerator, 20, + 0, + data->cancellable, + delete_batch, + data); + return; + } + } + + g_file_enumerator_close (enumerator, data->cancellable, NULL); + g_object_unref (enumerator); + + if (data->depth > 0 && !g_cancellable_is_cancelled (data->cancellable)) { + if ((data->trash && data->depth > 1) || + should_purge_file (data->file, data->cancellable, data->old)) { + g_debug ("GsdHousekeeping: purging %s\n", data->name); + if (!data->dry_run) { + g_file_delete (data->file, data->cancellable, NULL); + } + } + } + delete_data_unref (data); +} + +static void +delete_subdir (GObject *source, + GAsyncResult *res, + gpointer user_data) +{ + GFile *file = G_FILE (source); + DeleteData *data = user_data; + GFileEnumerator *enumerator; + GError *error = NULL; + + g_debug ("GsdHousekeeping: purging %s in %s\n", + data->trash ? "trash" : "temporary files", data->name); + + enumerator = g_file_enumerate_children_finish (file, res, &error); + if (error) { + if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_NOT_DIRECTORY) && + !g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED) && + !g_error_matches (error, G_IO_ERROR, G_IO_ERROR_PERMISSION_DENIED)) + g_warning ("Failed to enumerate children of %s: %s\n", data->name, error->message); + } + if (enumerator) { + g_file_enumerator_next_files_async (enumerator, 20, + 0, + data->cancellable, + delete_batch, + delete_data_ref (data)); + } else if (data->depth > 0 && g_error_matches (error, G_IO_ERROR, G_IO_ERROR_NOT_DIRECTORY)) { + if ((data->trash && data->depth > 1) || + should_purge_file (data->file, data->cancellable, data->old)) { + g_debug ("Purging %s leaf node", data->name); + if (!data->dry_run) { + g_file_delete (data->file, data->cancellable, NULL); + } + } + } + + if (error) + g_error_free (error); + delete_data_unref (data); +} + +static void +delete_subdir_check_symlink (GObject *source, + GAsyncResult *res, + gpointer user_data) +{ + GFile *file = G_FILE (source); + DeleteData *data = user_data; + GFileInfo *info; + + info = g_file_query_info_finish (file, res, NULL); + if (!info) { + delete_data_unref (data); + return; + } + + if (g_file_info_get_file_type (info) == G_FILE_TYPE_SYMBOLIC_LINK) { + if (should_purge_file (data->file, data->cancellable, data->old)) { + g_debug ("Purging %s leaf node", data->name); + if (!data->dry_run) { + g_file_delete (data->file, data->cancellable, NULL); + } + } + } else if (g_strcmp0 (g_file_info_get_name (info), ".X11-unix") == 0) { + g_debug ("Skipping X11 socket directory"); + } else { + g_file_enumerate_children_async (data->file, + G_FILE_ATTRIBUTE_STANDARD_NAME "," + G_FILE_ATTRIBUTE_STANDARD_TYPE "," + G_FILE_ATTRIBUTE_ID_FILESYSTEM, + G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, + 0, + data->cancellable, + delete_subdir, + delete_data_ref (data)); + } + g_object_unref (info); + delete_data_unref (data); +} + +void +delete_recursively_by_age (DeleteData *data) +{ + if (data->trash && (data->depth == 1) && + !should_purge_file (data->file, data->cancellable, data->old)) { + /* no need to recurse into trashed directories */ + return; + } + + g_file_query_info_async (data->file, + G_FILE_ATTRIBUTE_STANDARD_NAME "," + G_FILE_ATTRIBUTE_STANDARD_TYPE, + G_FILE_QUERY_INFO_NOFOLLOW_SYMLINKS, + 0, + data->cancellable, + delete_subdir_check_symlink, + delete_data_ref (data)); +} + +void +gsd_ldsm_purge_trash (GDateTime *old) +{ + GFile *file; + DeleteData *data; + + file = g_file_new_for_uri ("trash:"); + data = delete_data_new (file, NULL, old, FALSE, TRUE, 0, NULL); + delete_recursively_by_age (data); + delete_data_unref (data); + g_object_unref (file); +} + +void +gsd_ldsm_purge_temp_files (GDateTime *old) +{ + DeleteData *data; + GFile *file; + char *filesystem; + + /* Never clean temporary files on a sane (i.e. systemd managed) + * system. In that case systemd already ships + * /usr/lib/tmpfiles.d/tmp.conf + * which does the trick in a much safer way. + * Ideally we can just drop this feature, I am not sure why it was + * added in the first place though, it does not really seem like a + * privacy feature (also, it was late in the release cycle). + * https://en.wikipedia.org/wiki/Wikipedia:Chesterton%27s_fence + * + * This does the same as sd_booted without needing libsystemd. + */ + if (g_file_test ("/run/systemd/system/", G_FILE_TEST_IS_DIR)) + return; + + file = g_file_new_for_path (g_get_tmp_dir ()); + filesystem = get_filesystem (file); + data = delete_data_new (file, NULL, old, FALSE, FALSE, 0, filesystem); + g_free (filesystem); + delete_recursively_by_age (data); + delete_data_unref (data); + g_object_unref (file); + + if (g_strcmp0 (g_get_tmp_dir (), "/var/tmp") != 0) { + file = g_file_new_for_path ("/var/tmp"); + filesystem = get_filesystem (file); + data = delete_data_new (file, NULL, old, FALSE, FALSE, 0, filesystem); + g_free (filesystem); + delete_recursively_by_age (data); + delete_data_unref (data); + g_object_unref (file); + } + + if (g_strcmp0 (g_get_tmp_dir (), "/tmp") != 0) { + file = g_file_new_for_path ("/tmp"); + filesystem = get_filesystem (file); + data = delete_data_new (file, NULL, old, FALSE, FALSE, 0, filesystem); + g_free (filesystem); + delete_recursively_by_age (data); + delete_data_unref (data); + g_object_unref (file); + } +} + +void +gsd_ldsm_show_empty_trash (void) +{ + GFile *file; + GDateTime *old; + DeleteData *data; + + old = g_date_time_new_now_local (); + file = g_file_new_for_uri ("trash:"); + data = delete_data_new (file, NULL, old, TRUE, TRUE, 0, NULL); + g_object_unref (file); + g_date_time_unref (old); + + delete_recursively_by_age (data); + delete_data_unref (data); +} + +static gboolean +ldsm_purge_trash_and_temp (gpointer data) +{ + GDateTime *now, *old; + + now = g_date_time_new_now_local (); + old = g_date_time_add_days (now, - purge_after); + + if (purge_trash) { + g_debug ("housekeeping: purge trash older than %u days", purge_after); + gsd_ldsm_purge_trash (old); + } + if (purge_temp_files) { + g_debug ("housekeeping: purge temp files older than %u days", purge_after); + gsd_ldsm_purge_temp_files (old); + } + + g_date_time_unref (old); + g_date_time_unref (now); + + return G_SOURCE_CONTINUE; +} + +static void +empty_trash_callback (NotifyNotification *n, + const char *action) +{ + GDateTime *old; + + g_assert (action != NULL); + g_assert (strcmp (action, "empty-trash") == 0); + + old = g_date_time_new_now_local (); + gsd_ldsm_purge_trash (old); + g_date_time_unref (old); + + notify_notification_close (n, NULL); +} + +static void +on_notification_closed (NotifyNotification *n) +{ + g_object_unref (notification); + notification = NULL; +} + +static void +ldsm_notify (const char *summary, + const char *body, + const char *mount_path) +{ + gchar *program; + gboolean has_disk_analyzer; + gboolean has_trash; + + /* Don't show a notice if one is already displayed */ + if (notification != NULL) + return; + + notification = notify_notification_new (summary, body, "drive-harddisk-symbolic"); + g_signal_connect (notification, + "closed", + G_CALLBACK (on_notification_closed), + NULL); + + notify_notification_set_app_name (notification, _("Disk Space")); + notify_notification_set_hint (notification, "transient", g_variant_new_boolean (TRUE)); + notify_notification_set_urgency (notification, NOTIFY_URGENCY_CRITICAL); + notify_notification_set_timeout (notification, NOTIFY_EXPIRES_DEFAULT); + notify_notification_set_hint_string (notification, "desktop-entry", "org.gnome.baobab"); + + program = g_find_program_in_path (DISK_SPACE_ANALYZER); + has_disk_analyzer = (program != NULL); + g_free (program); + + if (has_disk_analyzer) { + notify_notification_add_action (notification, + "examine", + _("Examine"), + (NotifyActionCallback) examine_callback, + g_strdup (mount_path), + g_free); + } + + has_trash = ldsm_mount_has_trash (mount_path); + + if (has_trash) { + notify_notification_add_action (notification, + "empty-trash", + _("Empty Trash"), + (NotifyActionCallback) empty_trash_callback, + NULL, + NULL); + } + + notify_notification_add_action (notification, + "ignore", + _("Ignore"), + (NotifyActionCallback) ignore_callback, + NULL, + NULL); + notify_notification_set_category (notification, "device"); + + if (!notify_notification_show (notification, NULL)) { + g_warning ("failed to send disk space notification\n"); + } +} + +static void +ldsm_notify_for_mount (LdsmMountInfo *mount, + gboolean multiple_volumes) +{ + gboolean has_trash; + gchar *name; + gint64 free_space; + const gchar *path; + char *free_space_str; + char *summary; + char *body; + + name = g_unix_mount_guess_name (mount->mount); + path = g_unix_mount_get_mount_path (mount->mount); + has_trash = ldsm_mount_has_trash (path); + + free_space = (gint64) mount->buf.f_frsize * (gint64) mount->buf.f_bavail; + free_space_str = g_format_size (free_space); + + if (multiple_volumes) { + summary = g_strdup_printf (_("Low Disk Space on “%s”"), name); + if (has_trash) { + body = g_strdup_printf (_("The volume “%s” has only %s disk space remaining. You may free up some space by emptying the trash."), + name, + free_space_str); + } else { + body = g_strdup_printf (_("The volume “%s” has only %s disk space remaining."), + name, + free_space_str); + } + } else { + summary = g_strdup (_("Low Disk Space")); + if (has_trash) { + body = g_strdup_printf (_("This computer has only %s disk space remaining. You may free up some space by emptying the trash."), + free_space_str); + } else { + body = g_strdup_printf (_("This computer has only %s disk space remaining."), + free_space_str); + } + } + + ldsm_notify (summary, body, path); + + g_free (free_space_str); + g_free (summary); + g_free (body); + g_free (name); +} + +static gboolean +ldsm_mount_has_space (LdsmMountInfo *mount) +{ + gdouble free_space; + + free_space = (double) mount->buf.f_bavail / (double) mount->buf.f_blocks; + /* enough free space, nothing to do */ + if (free_space > free_percent_notify) + return TRUE; + + if (((gint64) mount->buf.f_frsize * (gint64) mount->buf.f_bavail) > ((gint64) free_size_gb_no_notify * GIGABYTE)) + return TRUE; + + /* If we got here, then this volume is low on space */ + return FALSE; +} + +static gboolean +ldsm_mount_is_virtual (LdsmMountInfo *mount) +{ + if (mount->buf.f_blocks == 0) { + /* Filesystems with zero blocks are virtual */ + return TRUE; + } + + return FALSE; +} + +static gint +ldsm_ignore_path_compare (gconstpointer a, + gconstpointer b) +{ + return g_strcmp0 ((const gchar *)a, (const gchar *)b); +} + +static gboolean +ldsm_mount_is_user_ignore (const gchar *path) +{ + if (g_slist_find_custom (ignore_paths, path, (GCompareFunc) ldsm_ignore_path_compare) != NULL) + return TRUE; + else + return FALSE; +} + + +static void +ldsm_free_mount_info (gpointer data) +{ + LdsmMountInfo *mount = data; + + g_return_if_fail (mount != NULL); + + g_unix_mount_free (mount->mount); + g_free (mount); +} + +static void +ldsm_maybe_warn_mounts (GList *mounts, + gboolean multiple_volumes) +{ + GList *l; + gboolean done = FALSE; + + for (l = mounts; l != NULL; l = l->next) { + LdsmMountInfo *mount_info = l->data; + LdsmMountInfo *previous_mount_info; + gdouble free_space; + gdouble previous_free_space; + time_t curr_time; + const gchar *path; + gboolean show_notify; + + if (done) { + /* Don't show any more dialogs if the user took action with the last one. The user action + * might free up space on multiple volumes, making the next dialog redundant. + */ + ldsm_free_mount_info (mount_info); + continue; + } + + path = g_unix_mount_get_mount_path (mount_info->mount); + + previous_mount_info = g_hash_table_lookup (ldsm_notified_hash, path); + if (previous_mount_info != NULL) + previous_free_space = (gdouble) previous_mount_info->buf.f_bavail / (gdouble) previous_mount_info->buf.f_blocks; + + free_space = (gdouble) mount_info->buf.f_bavail / (gdouble) mount_info->buf.f_blocks; + + if (previous_mount_info == NULL) { + /* We haven't notified for this mount yet */ + show_notify = TRUE; + mount_info->notify_time = time (NULL); + g_hash_table_replace (ldsm_notified_hash, g_strdup (path), mount_info); + } else if ((previous_free_space - free_space) > free_percent_notify_again) { + /* We've notified for this mount before and free space has decreased sufficiently since last time to notify again */ + curr_time = time (NULL); + if (difftime (curr_time, previous_mount_info->notify_time) > (gdouble)(min_notify_period * 60)) { + show_notify = TRUE; + mount_info->notify_time = curr_time; + } else { + /* It's too soon to show the dialog again. However, we still replace the LdsmMountInfo + * struct in the hash table, but give it the notfiy time from the previous dialog. + * This will stop the notification from reappearing unnecessarily as soon as the timeout expires. + */ + show_notify = FALSE; + mount_info->notify_time = previous_mount_info->notify_time; + } + g_hash_table_replace (ldsm_notified_hash, g_strdup (path), mount_info); + } else { + /* We've notified for this mount before, but the free space hasn't decreased sufficiently to notify again */ + ldsm_free_mount_info (mount_info); + show_notify = FALSE; + } + + if (show_notify) { + ldsm_notify_for_mount (mount_info, multiple_volumes); + done = TRUE; + } + } +} + +static gboolean +ldsm_check_all_mounts (gpointer data) +{ + GList *mounts; + GList *l; + GList *check_mounts = NULL; + GList *full_mounts = NULL; + guint number_of_mounts = 0; + gboolean multiple_volumes = FALSE; + + /* We iterate through the static mounts in /etc/fstab first, seeing if + * they're mounted by checking if the GUnixMountPoint has a corresponding GUnixMountEntry. + * Iterating through the static mounts means we automatically ignore dynamically mounted media. + */ + mounts = g_unix_mount_points_get (time_read); + + for (l = mounts; l != NULL; l = l->next) { + GUnixMountPoint *mount_point = l->data; + GUnixMountEntry *mount; + LdsmMountInfo *mount_info; + const gchar *path; + + path = g_unix_mount_point_get_mount_path (mount_point); + mount = g_unix_mount_at (path, time_read); + g_unix_mount_point_free (mount_point); + if (mount == NULL) { + /* The GUnixMountPoint is not mounted */ + continue; + } + + mount_info = g_new0 (LdsmMountInfo, 1); + mount_info->mount = mount; + + path = g_unix_mount_get_mount_path (mount); + + if (g_unix_mount_is_readonly (mount)) { + ldsm_free_mount_info (mount_info); + continue; + } + + if (ldsm_mount_is_user_ignore (path)) { + ldsm_free_mount_info (mount_info); + continue; + } + + if (gsd_should_ignore_unix_mount (mount)) { + ldsm_free_mount_info (mount_info); + continue; + } + + if (statvfs (path, &mount_info->buf) != 0) { + ldsm_free_mount_info (mount_info); + continue; + } + + if (ldsm_mount_is_virtual (mount_info)) { + ldsm_free_mount_info (mount_info); + continue; + } + + check_mounts = g_list_prepend (check_mounts, mount_info); + number_of_mounts += 1; + } + + g_list_free (mounts); + + if (number_of_mounts > 1) + multiple_volumes = TRUE; + + for (l = check_mounts; l != NULL; l = l->next) { + LdsmMountInfo *mount_info = l->data; + + if (!ldsm_mount_has_space (mount_info)) { + full_mounts = g_list_prepend (full_mounts, mount_info); + } else { + g_hash_table_remove (ldsm_notified_hash, g_unix_mount_get_mount_path (mount_info->mount)); + ldsm_free_mount_info (mount_info); + } + } + + ldsm_maybe_warn_mounts (full_mounts, multiple_volumes); + + g_list_free (check_mounts); + g_list_free (full_mounts); + + return TRUE; +} + +static gboolean +ldsm_is_hash_item_not_in_mounts (gpointer key, + gpointer value, + gpointer user_data) +{ + GList *l; + + for (l = (GList *) user_data; l != NULL; l = l->next) { + GUnixMountEntry *mount = l->data; + const char *path; + + path = g_unix_mount_get_mount_path (mount); + + if (strcmp (path, key) == 0) + return FALSE; + } + + return TRUE; +} + +static void +ldsm_mounts_changed (GObject *monitor, + gpointer data) +{ + GList *mounts; + + /* remove the saved data for mounts that got removed */ + mounts = g_unix_mounts_get (time_read); + g_hash_table_foreach_remove (ldsm_notified_hash, + ldsm_is_hash_item_not_in_mounts, mounts); + g_list_free_full (mounts, (GDestroyNotify) g_unix_mount_free); + + /* check the status now, for the new mounts */ + ldsm_check_all_mounts (NULL); + + /* and reset the timeout */ + if (ldsm_timeout_id) + g_source_remove (ldsm_timeout_id); + ldsm_timeout_id = g_timeout_add_seconds (CHECK_EVERY_X_SECONDS, + ldsm_check_all_mounts, NULL); + g_source_set_name_by_id (ldsm_timeout_id, "[gnome-settings-daemon] ldsm_check_all_mounts"); +} + +static gboolean +ldsm_is_hash_item_in_ignore_paths (gpointer key, + gpointer value, + gpointer user_data) +{ + return ldsm_mount_is_user_ignore (key); +} + +static void +gsd_ldsm_get_config (void) +{ + gchar **settings_list; + + free_percent_notify = g_settings_get_double (settings, SETTINGS_FREE_PC_NOTIFY_KEY); + free_percent_notify_again = g_settings_get_double (settings, SETTINGS_FREE_PC_NOTIFY_AGAIN_KEY); + + free_size_gb_no_notify = g_settings_get_int (settings, SETTINGS_FREE_SIZE_NO_NOTIFY); + min_notify_period = g_settings_get_int (settings, SETTINGS_MIN_NOTIFY_PERIOD); + + if (ignore_paths != NULL) { + g_slist_foreach (ignore_paths, (GFunc) g_free, NULL); + g_clear_pointer (&ignore_paths, g_slist_free); + } + + settings_list = g_settings_get_strv (settings, SETTINGS_IGNORE_PATHS); + if (settings_list != NULL) { + guint i; + + for (i = 0; settings_list[i] != NULL; i++) + ignore_paths = g_slist_prepend (ignore_paths, g_strdup (settings_list[i])); + + /* Make sure we dont leave stale entries in ldsm_notified_hash */ + g_hash_table_foreach_remove (ldsm_notified_hash, + ldsm_is_hash_item_in_ignore_paths, NULL); + + g_strfreev (settings_list); + } + + purge_trash = g_settings_get_boolean (privacy_settings, SETTINGS_PURGE_TRASH); + purge_temp_files = g_settings_get_boolean (privacy_settings, SETTINGS_PURGE_TEMP_FILES); + purge_after = g_settings_get_uint (privacy_settings, SETTINGS_PURGE_AFTER); +} + +static void +gsd_ldsm_update_config (GSettings *settings, + const gchar *key, + gpointer user_data) +{ + gsd_ldsm_get_config (); +} + +void +gsd_ldsm_setup (gboolean check_now) +{ + if (ldsm_notified_hash || ldsm_timeout_id || ldsm_monitor) { + g_warning ("Low disk space monitor already initialized."); + return; + } + + ldsm_notified_hash = g_hash_table_new_full (g_str_hash, g_str_equal, + g_free, + ldsm_free_mount_info); + + settings = g_settings_new (SETTINGS_HOUSEKEEPING_DIR); + privacy_settings = g_settings_new (PRIVACY_SETTINGS); + gsd_ldsm_get_config (); + g_signal_connect (G_OBJECT (settings), "changed", + G_CALLBACK (gsd_ldsm_update_config), NULL); + + ldsm_monitor = g_unix_mount_monitor_get (); + g_signal_connect (ldsm_monitor, "mounts-changed", + G_CALLBACK (ldsm_mounts_changed), NULL); + + if (check_now) + ldsm_check_all_mounts (NULL); + + ldsm_timeout_id = g_timeout_add_seconds (CHECK_EVERY_X_SECONDS, + ldsm_check_all_mounts, NULL); + g_source_set_name_by_id (ldsm_timeout_id, "[gnome-settings-daemon] ldsm_check_all_mounts"); + + purge_trash_id = g_timeout_add_seconds (3600, ldsm_purge_trash_and_temp, NULL); + g_source_set_name_by_id (purge_trash_id, "[gnome-settings-daemon] ldsm_purge_trash_and_temp"); +} + +void +gsd_ldsm_clean (void) +{ + if (purge_trash_id) + g_source_remove (purge_trash_id); + purge_trash_id = 0; + + if (purge_temp_id) + g_source_remove (purge_temp_id); + purge_temp_id = 0; + + if (ldsm_timeout_id) + g_source_remove (ldsm_timeout_id); + ldsm_timeout_id = 0; + + g_clear_pointer (&ldsm_notified_hash, g_hash_table_destroy); + g_clear_object (&ldsm_monitor); + g_clear_object (&settings); + g_clear_object (&privacy_settings); + /* NotifyNotification::closed callback will drop reference */ + if (notification != NULL) + notify_notification_close (notification, NULL); + g_slist_free_full (ignore_paths, g_free); + ignore_paths = NULL; +} + |