*
*/
+/* Be careful, this file is not Linux-only: QNX also uses it */
+
#include <config.h>
-#define _GNU_SOURCE
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
+/* QNX's inotify is broken, and requires stdint.h to be manually included first */
+#include <stdint.h>
#include <sys/inotify.h>
#include <sys/types.h>
#include <signal.h>
static DBusLoop *loop = NULL;
static dbus_bool_t
-_inotify_watch_callback (DBusWatch *watch, unsigned int condition, void *data)
-{
- return dbus_watch_handle (watch, condition);
-}
-
-static dbus_bool_t
_handle_inotify_watch (DBusWatch *passed_watch, unsigned int flags, void *data)
{
char buffer[INOTIFY_BUF_LEN];
ssize_t ret = 0;
int i = 0;
- pid_t pid;
- dbus_bool_t have_change = FALSE;
ret = read (inotify_fd, buffer, INOTIFY_BUF_LEN);
if (ret < 0)
_dbus_verbose ("Error reading inotify event: '%s'\n", _dbus_strerror(errno));
else if (!ret)
_dbus_verbose ("Error reading inotify event: buffer too small\n");
+ else
+ {
+ _dbus_verbose ("Sending SIGHUP signal on reception of %ld inotify event(s)\n", (long) ret);
+ (void) kill (_dbus_getpid (), SIGHUP);
+ }
+#ifdef DBUS_ENABLE_VERBOSE_MODE
while (i < ret)
{
struct inotify_event *ev;
- pid = _dbus_getpid ();
ev = (struct inotify_event *) &buffer[i];
i += INOTIFY_EVENT_SIZE + ev->len;
-#ifdef DBUS_ENABLE_VERBOSE_MODE
if (ev->len)
_dbus_verbose ("event name: '%s'\n", ev->name);
_dbus_verbose ("inotify event: wd=%d mask=%u cookie=%u len=%u\n", ev->wd, ev->mask, ev->cookie, ev->len);
-#endif
- _dbus_verbose ("Sending SIGHUP signal on reception of a inotify event\n");
- have_change = TRUE;
}
- if (have_change)
- (void) kill (pid, SIGHUP);
+#endif
return TRUE;
}
-static int
-_init_inotify (BusContext *context)
-{
- int ret = 0;
-
- if (inotify_fd == -1) {
-#ifdef HAVE_INOTIFY_INIT1
- inotify_fd = inotify_init1 (IN_CLOEXEC);
-#else
- inotify_fd = inotify_init ();
-#endif
- if (inotify_fd <= 0) {
- _dbus_warn ("Cannot initialize inotify\n");
- goto out;
- }
- loop = bus_context_get_loop (context);
-
- watch = _dbus_watch_new (inotify_fd, DBUS_WATCH_READABLE, TRUE,
- _handle_inotify_watch, NULL, NULL);
-
- if (watch == NULL)
- {
- _dbus_warn ("Unable to create inotify watch\n");
- goto out;
- }
-
- if (!_dbus_loop_add_watch (loop, watch, _inotify_watch_callback,
- NULL, NULL))
- {
- _dbus_warn ("Unable to add reload watch to main loop");
- _dbus_watch_unref (watch);
- watch = NULL;
- goto out;
- }
- }
-
- ret = 1;
+#include <stdio.h>
-out:
- return ret;
-}
-
-void
-bus_set_watched_dirs (BusContext *context, DBusList **directories)
+static void
+_set_watched_dirs_internal (DBusList **directories)
{
int new_wds[MAX_DIRS_TO_WATCH];
char *new_dirs[MAX_DIRS_TO_WATCH];
DBusList *link;
int i, j, wd;
- if (!_init_inotify (context))
- goto out;
-
for (i = 0; i < MAX_DIRS_TO_WATCH; i++)
{
new_wds[i] = -1;
wd = inotify_add_watch (inotify_fd, new_dirs[i], IN_CLOSE_WRITE | IN_DELETE | IN_MOVED_TO | IN_MOVED_FROM);
if (wd < 0)
{
- _dbus_warn ("Cannot setup inotify for '%s'; error '%s'\n", new_dirs[i], _dbus_strerror (errno));
- goto out;
+ /* Not all service directories need to exist. */
+ if (errno != ENOENT)
+ {
+ _dbus_warn ("Cannot setup inotify for '%s'; error '%s'\n", new_dirs[i], _dbus_strerror (errno));
+ goto out;
+ }
+ else
+ {
+ new_wds[i] = -1;
+ new_dirs[i] = NULL;
+ continue;
+ }
}
new_wds[i] = wd;
new_dirs[i] = _dbus_strdup (new_dirs[i]);
out:;
}
+
+#include <stdio.h>
+static void
+_shutdown_inotify (void *data)
+{
+ DBusList *empty = NULL;
+
+ if (inotify_fd == -1)
+ return;
+
+ _set_watched_dirs_internal (&empty);
+
+ if (watch != NULL)
+ {
+ _dbus_loop_remove_watch (loop, watch);
+ _dbus_watch_invalidate (watch);
+ _dbus_watch_unref (watch);
+ _dbus_loop_unref (loop);
+ }
+ watch = NULL;
+ loop = NULL;
+
+ close (inotify_fd);
+ inotify_fd = -1;
+}
+
+static int
+_init_inotify (BusContext *context)
+{
+ int ret = 0;
+
+ if (inotify_fd == -1)
+ {
+#ifdef HAVE_INOTIFY_INIT1
+ inotify_fd = inotify_init1 (IN_CLOEXEC);
+ /* This ensures we still run on older Linux kernels.
+ * https://bugs.freedesktop.org/show_bug.cgi?id=23957
+ */
+ if (inotify_fd < 0)
+ inotify_fd = inotify_init ();
+#else
+ inotify_fd = inotify_init ();
+#endif
+ if (inotify_fd <= 0)
+ {
+ _dbus_warn ("Cannot initialize inotify\n");
+ goto out;
+ }
+ loop = bus_context_get_loop (context);
+ _dbus_loop_ref (loop);
+
+ watch = _dbus_watch_new (inotify_fd, DBUS_WATCH_READABLE, TRUE,
+ _handle_inotify_watch, NULL, NULL);
+
+ if (watch == NULL)
+ {
+ _dbus_warn ("Unable to create inotify watch\n");
+ goto out;
+ }
+
+ if (!_dbus_loop_add_watch (loop, watch))
+ {
+ _dbus_warn ("Unable to add reload watch to main loop");
+ _dbus_watch_unref (watch);
+ watch = NULL;
+ goto out;
+ }
+
+ if (!_dbus_register_shutdown_func (_shutdown_inotify, NULL))
+ {
+ _dbus_warn ("Unable to register shutdown func");
+ _dbus_watch_unref (watch);
+ watch = NULL;
+ goto out;
+ }
+ }
+
+ ret = 1;
+
+out:
+ return ret;
+}
+
+void
+bus_set_watched_dirs (BusContext *context, DBusList **directories)
+{
+ if (!_init_inotify (context))
+ return;
+
+ _set_watched_dirs_internal (directories);
+}
projects / platform / upstream / dbus.git / blobdiff