diff options
Diffstat (limited to 'src/udisksdaemonutil.c')
| -rw-r--r-- | src/udisksdaemonutil.c | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/udisksdaemonutil.c b/src/udisksdaemonutil.c index 06982d1..23bc3ed 100644 --- a/src/udisksdaemonutil.c +++ b/src/udisksdaemonutil.c @@ -21,6 +21,7 @@ #include "config.h" #include <glib/gi18n-lib.h> #include <glib/gstdio.h> +#include <gio/gunixfdlist.h> #include <stdio.h> @@ -1238,3 +1239,133 @@ udisks_daemon_util_file_set_contents (const gchar *filename, g_free (tmpl); return ret; } + +/* ---------------------------------------------------------------------------------------------------- */ + +/** + * UDisksInhibitCookie: + * + * Opaque data structure used in udisks_daemon_util_inhibit_system_sync() and + * udisks_daemon_util_uninhibit_system_sync(). + */ +struct UDisksInhibitCookie +{ + /*< private >*/ + gint32 magic; +#ifdef HAVE_LIBSYSTEMD_LOGIN + gint fd; +#endif +}; + +/** + * udisks_daemon_util_inhibit_system_sync: + * @reason: A human readable explanation of why the system is being inhibited. + * + * Tries to inhibit the system. + * + * Right now only + * <ulink url="http://www.freedesktop.org/wiki/Software/systemd/inhibit">systemd</ulink> + * inhibitors are supported but other inhibitors can be added in the future. + * + * Returns: A cookie that can be used with udisks_daemon_util_uninhibit_system_sync(). + */ +UDisksInhibitCookie * +udisks_daemon_util_inhibit_system_sync (const gchar *reason) +{ + g_return_val_if_fail (reason != NULL, NULL); + +#ifdef HAVE_LIBSYSTEMD_LOGIN + UDisksInhibitCookie *ret; + GDBusConnection *connection = NULL; + GVariant *value = NULL; + GUnixFDList *fd_list = NULL; + gint32 index = -1; + GError *error = NULL; + + connection = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, &error); + if (connection == NULL) + { + udisks_error ("Error getting system bus: %s (%s, %d)", + error->message, g_quark_to_string (error->domain), error->code); + g_clear_error (&error); + goto out; + } + + value = g_dbus_connection_call_with_unix_fd_list_sync (connection, + "org.freedesktop.login1", + "/org/freedesktop/login1", + "org.freedesktop.login1.Manager", + "Inhibit", + g_variant_new ("(ssss)", + "sleep:shutdown:idle", /* what */ + "Disk Manager", /* who */ + reason, /* why */ + "block"), /* mode */ + G_VARIANT_TYPE ("(h)"), + G_DBUS_CALL_FLAGS_NONE, + -1, /* default timeout */ + NULL, /* fd_list */ + &fd_list, /* out_fd_list */ + NULL, /* GCancellable */ + &error); + if (value == NULL) + { + udisks_error ("Error inhibiting: %s (%s, %d)", + error->message, g_quark_to_string (error->domain), error->code); + g_clear_error (&error); + goto out; + } + + g_variant_get (value, "(h)", &index); + g_assert (index >= 0 && index < g_unix_fd_list_get_length (fd_list)); + + ret = g_new0 (UDisksInhibitCookie, 1); + ret->magic = 0xdeadbeef; + ret->fd = g_unix_fd_list_get (fd_list, index, &error); + if (ret->fd == -1) + { + udisks_error ("Error getting fd: %s (%s, %d)", + error->message, g_quark_to_string (error->domain), error->code); + g_clear_error (&error); + g_free (ret); + ret = NULL; + goto out; + } + + out: + if (value != NULL) + g_variant_unref (value); + g_clear_object (&fd_list); + g_clear_object (&connection); + return ret; +#else + /* non-systemd: just return a dummy pointer */ + return (UDisksInhibitCookie* ) &udisks_daemon_util_inhibit_system_sync; +#endif +} + +/** + * udisks_daemon_util_uninhibit_system_sync: + * @cookie: %NULL or a cookie obtained from udisks_daemon_util_inhibit_system_sync(). + * + * Does nothing if @cookie is %NULL, otherwise uninhibits. + */ +void +udisks_daemon_util_uninhibit_system_sync (UDisksInhibitCookie *cookie) +{ +#ifdef HAVE_LIBSYSTEMD_LOGIN + if (cookie != NULL) + { + g_assert (cookie->magic == 0xdeadbeef); + if (close (cookie->fd) != 0) + { + udisks_error ("Error closing inhbit-fd: %m"); + } + g_free (cookie); + } +#else + /* non-systemd: check dummy pointer */ + g_warn_if_fail (cookie == (UDisksInhibitCookie* ) &udisks_daemon_util_inhibit_system_sync); +#endif +} + |