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Diffstat (limited to 'src/libudev/libudev-queue.c')
-rw-r--r--src/libudev/libudev-queue.c46
1 files changed, 46 insertions, 0 deletions
diff --git a/src/libudev/libudev-queue.c b/src/libudev/libudev-queue.c
index c32a7ef709..d4334b440d 100644
--- a/src/libudev/libudev-queue.c
+++ b/src/libudev/libudev-queue.c
@@ -26,6 +26,7 @@
#include <string.h>
#include <limits.h>
#include <sys/stat.h>
+#include <sys/inotify.h>
#include "libudev.h"
#include "libudev-private.h"
@@ -45,6 +46,7 @@
struct udev_queue {
struct udev *udev;
int refcount;
+ int fd;
};
/**
@@ -69,6 +71,7 @@ _public_ struct udev_queue *udev_queue_new(struct udev *udev)
udev_queue->refcount = 1;
udev_queue->udev = udev;
+ udev_queue->fd = -1;
return udev_queue;
}
@@ -107,6 +110,8 @@ _public_ struct udev_queue *udev_queue_unref(struct udev_queue *udev_queue)
if (udev_queue->refcount > 0)
return NULL;
+ safe_close(udev_queue->fd);
+
free(udev_queue);
return NULL;
}
@@ -222,3 +227,44 @@ _public_ struct udev_list_entry *udev_queue_get_queued_list_entry(struct udev_qu
{
return NULL;
}
+
+/**
+ * udev_queue_get_fd:
+ * @udev_queue: udev queue context
+ *
+ * Returns: a file descriptor to watch for a queue to become empty.
+ */
+_public_ int udev_queue_get_fd(struct udev_queue *udev_queue) {
+ int fd;
+ int r;
+
+ if (udev_queue->fd >= 0)
+ return udev_queue->fd;
+
+ fd = inotify_init1(IN_CLOEXEC);
+ if (fd < 0)
+ return -errno;
+
+ r = inotify_add_watch(fd, "/run/udev/queue" , IN_DELETE);
+ if (r < 0) {
+ r = -errno;
+ close(fd);
+ return r;
+ }
+
+ udev_queue->fd = fd;
+ return fd;
+}
+
+/**
+ * udev_queue_flush:
+ * @udev_queue: udev queue context
+ *
+ * Returns: the result of clearing the watch for queue changes.
+ */
+_public_ int udev_queue_flush(struct udev_queue *udev_queue) {
+ if (udev_queue->fd < 0)
+ return -EINVAL;
+
+ return flush_fd(udev_queue->fd);
+}