chiark / gitweb /
udevadm: settle - use libudev queue
authorKay Sievers <kay.sievers@vrfy.org>
Wed, 1 Oct 2008 07:42:03 +0000 (09:42 +0200)
committerKay Sievers <kay.sievers@vrfy.org>
Wed, 1 Oct 2008 07:42:03 +0000 (09:42 +0200)
NEWS
TODO
udev/Makefile.am
udev/udevadm-settle.c

diff --git a/NEWS b/NEWS
index 260fb65..e43dde8 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -4,7 +4,7 @@ More libudev work. Most of udevadm's functionality comes from libudev
 now.
 
 udevadm trigger has a new option --type, which allows to trigger events
-for "devices", for "subsystems" and "failed" devices. The old option
+for "devices", for "subsystems", or "failed" devices. The old option
 --retry-failed" still works, but is no longer mentioned in the man page.
 
 udev 128
diff --git a/TODO b/TODO
index 8c74f65..dbdadc7 100644 (file)
--- a/TODO
+++ b/TODO
@@ -1,7 +1,5 @@
-  o test --type=failed
-  o add libudev queue - interface for /dev/.udev/queue/ state
-      use queue interface for "settle"
-      use queue interface for --type=failed
+  o use queue interface for --type=failed
+  o check "enumerate" on SYSFS_DEPRECATED
 #129
 
   o use libudev device in udev_rules.c
@@ -15,4 +13,5 @@
     the default rules
   o "udevadm control" commands will only accept the --<command> syntax
   o symlink names to udevadm will no longer be resolved to old command names
+  o remove "udevinfo -V"
   o get distros to agree on a default set of rules
index 6f9acce..b28546b 100644 (file)
@@ -34,6 +34,7 @@ common_files = \
        lib/libudev-device.c \
        lib/libudev-monitor.c \
        lib/libudev-enumerate.c \
+       lib/libudev-queue.c \
        lib/libudev-ctrl.c
 
 if USE_SELINUX
index 78ac47f..d066ef9 100644 (file)
 #define DEFAULT_TIMEOUT                        180
 #define LOOP_PER_SECOND                        20
 
-static void print_queue(struct udev *udev, const char *dir)
-{
-       LIST_HEAD(files);
-       struct name_entry *item;
-
-       if (add_matching_files(udev, &files, dir, NULL) < 0)
-               return;
-
-       printf("\n\nAfter the udevadm settle timeout, the events queue contains:\n\n");
-
-       list_for_each_entry(item, &files, node) {
-               char target[UTIL_NAME_SIZE];
-               size_t len;
-               const char *filename = strrchr(item->name, '/');
-
-               if (filename == NULL)
-                       continue;
-               filename++;
-               if (*filename == '\0')
-                       continue;
-
-               len = readlink(item->name, target, sizeof(target));
-               if (len < 0)
-                       continue;
-               target[len] = '\0';
-
-               printf("%s: %s\n", filename, target);
-       }
-
-       printf("\n\n");
-}
-
 int udevadm_settle(struct udev *udev, int argc, char *argv[])
 {
-       char queuename[UTIL_PATH_SIZE];
-       char filename[UTIL_PATH_SIZE];
-       unsigned long long seq_kernel;
-       unsigned long long seq_udev;
-       char seqnum[32];
-       int fd;
-       ssize_t len;
-       int timeout = DEFAULT_TIMEOUT;
-       int loop;
        static const struct option options[] = {
                { "timeout", 1, NULL, 't' },
                { "help", 0, NULL, 'h' },
                {}
        };
-       int option;
-       int rc = 1;
-       int seconds;
+       int timeout = DEFAULT_TIMEOUT;
+       struct udev_queue *udev_queue;
+       int loop;
+       int rc = 0;
 
        dbg(udev, "version %s\n", VERSION);
 
        while (1) {
+               int option;
+               int seconds;
+
                option = getopt_long(argc, argv, "t:h", options, NULL);
                if (option == -1)
                        break;
@@ -107,65 +70,27 @@ int udevadm_settle(struct udev *udev, int argc, char *argv[])
                }
        }
 
-       util_strlcpy(queuename, udev_get_dev_path(udev), sizeof(queuename));
-       util_strlcat(queuename, "/.udev/queue", sizeof(queuename));
-
+       udev_queue = udev_queue_new(udev);
+       if (udev_queue == NULL)
+               goto exit;
        loop = timeout * LOOP_PER_SECOND;
        while (loop--) {
-               /* wait for events in queue to finish */
-               while (loop--) {
-                       struct stat statbuf;
-
-                       if (stat(queuename, &statbuf) < 0) {
-                               info(udev, "queue is empty\n");
-                               break;
-                       }
-                       usleep(1000 * 1000 / LOOP_PER_SECOND);
-               }
-               if (loop <= 0) {
-                       info(udev, "timeout waiting for queue\n");
-                       print_queue(udev, queuename);
-                       goto exit;
-               }
-
-               /* read current udev seqnum */
-               util_strlcpy(filename, udev_get_dev_path(udev), sizeof(filename));
-               util_strlcat(filename, "/.udev/uevent_seqnum", sizeof(filename));
-               fd = open(filename, O_RDONLY);
-               if (fd < 0)
-                       goto exit;
-               len = read(fd, seqnum, sizeof(seqnum)-1);
-               close(fd);
-               if (len <= 0)
-                       goto exit;
-               seqnum[len] = '\0';
-               seq_udev = strtoull(seqnum, NULL, 10);
-               info(udev, "udev seqnum = %llu\n", seq_udev);
-
-               /* read current kernel seqnum */
-               util_strlcpy(filename, udev_get_sys_path(udev), sizeof(filename));
-               util_strlcat(filename, "/kernel/uevent_seqnum", sizeof(filename));
-               fd = open(filename, O_RDONLY);
-               if (fd < 0)
-                       goto exit;
-               len = read(fd, seqnum, sizeof(seqnum)-1);
-               close(fd);
-               if (len <= 0)
-                       goto exit;
-               seqnum[len] = '\0';
-               seq_kernel = strtoull(seqnum, NULL, 10);
-               info(udev, "kernel seqnum = %llu\n", seq_kernel);
-
-               /* make sure all kernel events have arrived in the queue */
-               if (seq_udev >= seq_kernel) {
-                       info(udev, "queue is empty and no pending events left\n");
-                       rc = 0;
-                       goto exit;
-               }
+               if (udev_queue_get_queue_is_empty(udev_queue))
+                       break;
                usleep(1000 * 1000 / LOOP_PER_SECOND);
-               info(udev, "queue is empty, but events still pending\n");
        }
-
+       if (loop <= 0) {
+               struct udev_list_entry *list_entry;
+
+               info(udev, "timeout waiting for udev queue\n");
+               printf("\ndevadm settle timeout of %i seconds reached, the event queue contains:\n", timeout);
+               udev_list_entry_foreach(list_entry, udev_queue_get_queued_list_entry(udev_queue))
+                       printf("  '%s' [%s]\n",
+                              udev_list_entry_get_name(list_entry),
+                              udev_list_entry_get_value(list_entry));
+               rc = 1;
+       }
 exit:
+       udev_queue_unref(udev_queue);
        return rc;
 }