X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=udev%2Fudevadm-settle.c;h=682819201e46fc2f970626246c25b2608b7d1cec;hb=b02140b6bcd080c5fd60306a493447ce7afdad64;hp=f1052aa14896f11d698736c7b0fd2b2f06dce2bf;hpb=f503f6b22fa54d1a65156a51d8b3311190c73ae5;p=elogind.git

diff --git a/udev/udevadm-settle.c b/udev/udevadm-settle.c
index f1052aa14..682819201 100644
--- a/udev/udevadm-settle.c
+++ b/udev/udevadm-settle.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2006-2008 Kay Sievers <kay@vrfy.org>
+ * Copyright (C) 2006-2009 Kay Sievers <kay@vrfy.org>
  * Copyright (C) 2009 Canonical Ltd.
  * Copyright (C) 2009 Scott James Remnant <scott@netsplit.com>
  *
@@ -54,6 +54,7 @@ int udevadm_settle(struct udev *udev, int argc, char *argv[])
 		{ "seq-start", required_argument, NULL, 's' },
 		{ "seq-end", required_argument, NULL, 'e' },
 		{ "timeout", required_argument, NULL, 't' },
+		{ "exit-if-exists", required_argument, NULL, 'E' },
 		{ "quiet", no_argument, NULL, 'q' },
 		{ "help", no_argument, NULL, 'h' },
 		{}
@@ -61,10 +62,11 @@ int udevadm_settle(struct udev *udev, int argc, char *argv[])
 	unsigned long long start = 0;
 	unsigned long long end = 0;
 	int quiet = 0;
-	int timeout = 0;
+	const char *exists = NULL;
+	int timeout = DEFAULT_TIMEOUT;
 	struct sigaction act;
 	struct udev_queue *udev_queue = NULL;
-	int rc = 0;
+	int rc = 1;
 
 	dbg(udev, "version %s\n", VERSION);
 
@@ -80,7 +82,7 @@ int udevadm_settle(struct udev *udev, int argc, char *argv[])
 		int option;
 		int seconds;
 
-		option = getopt_long(argc, argv, "s:e:t:qh", options, NULL);
+		option = getopt_long(argc, argv, "s:e:t:E:qh", options, NULL);
 		if (option == -1)
 			break;
 
@@ -102,25 +104,29 @@ int udevadm_settle(struct udev *udev, int argc, char *argv[])
 		case 'q':
 			quiet = 1;
 			break;
+		case 'E':
+			exists = optarg;
+			break;
 		case 'h':
 			printf("Usage: udevadm settle OPTIONS\n"
-			       "  --timeout=<seconds>   maximum time to wait for events\n"
-			       "  --seq-start=<seqnum>  first seqnum to wait for\n"
-			       "  --seq-end=<seqnum>    last seqnum to wait for\n"
-			       "  --quiet               do not print list after timeout\n"
+			       "  --timeout=<seconds>     maximum time to wait for events\n"
+			       "  --seq-start=<seqnum>    first seqnum to wait for\n"
+			       "  --seq-end=<seqnum>      last seqnum to wait for\n"
+			       "  --exit-if-exists=<file> stop waiting if file exists\n"
+			       "  --quiet                 do not print list after timeout\n"
 			       "  --help\n\n");
-			goto exit;
+			exit(0);
 		}
 	}
 
 	if (timeout > 0)
 		alarm(timeout);
 	else
-		alarm(DEFAULT_TIMEOUT);
+		is_timeout = 1;
 
 	udev_queue = udev_queue_new(udev);
 	if (udev_queue == NULL)
-		goto exit;
+		exit(2);
 
 	if (start > 0) {
 		unsigned long long kernel_seq;
@@ -172,17 +178,31 @@ int udevadm_settle(struct udev *udev, int argc, char *argv[])
 		}
 	}
 
-	while (!is_timeout) {
+	while (1) {
+		struct stat statbuf;
+
+		if (exists != NULL && stat(exists, &statbuf) == 0) {
+			rc = 0;
+			break;
+		}
+
 		if (start > 0) {
 			/* if asked for, wait for a specific sequence of events */
-			if (udev_queue_get_seqnum_sequence_is_finished(udev_queue, start, end) == 1)
+			if (udev_queue_get_seqnum_sequence_is_finished(udev_queue, start, end) == 1) {
+				rc = 0;
 				break;
+			}
 		} else {
 			/* exit if queue is empty */
-			if (udev_queue_get_queue_is_empty(udev_queue))
+			if (udev_queue_get_queue_is_empty(udev_queue)) {
+				rc = 0;
 				break;
+			}
 		}
 
+		if (is_timeout)
+			break;
+
 		usleep(1000 * 1000 / LOOP_PER_SECOND);
 	}
 
@@ -190,7 +210,7 @@ int udevadm_settle(struct udev *udev, int argc, char *argv[])
 	if (is_timeout) {
 		struct udev_list_entry *list_entry;
 
-		if (!quiet) {
+		if (!quiet && udev_queue_get_queued_list_entry(udev_queue) != NULL) {
 			info(udev, "timeout waiting for udev queue\n");
 			printf("\nudevadm 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))
@@ -198,9 +218,8 @@ int udevadm_settle(struct udev *udev, int argc, char *argv[])
 				       udev_list_entry_get_name(list_entry),
 				       udev_list_entry_get_value(list_entry));
 		}
-		rc = 1;
 	}
-exit:
+
 	udev_queue_unref(udev_queue);
 	return rc;
 }