launchd-442.21.tar.gz

[apple/launchd.git] / support / wait4path.c

diff --git a/support/wait4path.c b/support/wait4path.c
new file mode 100644 (file)
index 0000000..bc85343
--- /dev/null
+++ b/support/wait4path.c
@@ -0,0 +1,61 @@
+/*
+ * Copyright (c) 2005 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_APACHE_LICENSE_HEADER_START@
+ * 
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * 
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * 
+ * @APPLE_APACHE_LICENSE_HEADER_END@
+ */
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/event.h>
+#include <sys/time.h>
+#include <sys/param.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <errno.h>
+#include <string.h>
+
+int main(int argc, char *argv[])
+{
+       int kq = kqueue();
+       struct kevent kev;
+       struct stat sb;
+
+       if (argc != 2) {
+               fprintf(stderr, "usage: %s <object on mount point>\n", argv[0]);
+               exit(EXIT_FAILURE);
+       }
+
+       EV_SET(&kev, 0, EVFILT_FS, EV_ADD, 0, 0, 0);
+
+       if (kevent(kq, &kev, 1, NULL, 0, NULL) == -1) {
+               fprintf(stderr, "adding EVFILT_FS to kqueue failed: %s\n", strerror(errno));
+               exit(EXIT_FAILURE);
+       }
+
+       if (stat(argv[1], &sb) == 0) {
+               exit(EXIT_SUCCESS);
+       }
+
+       for (;;) {
+               kevent(kq, NULL, 0, &kev, 1, NULL);
+               if (stat(argv[1], &sb) == 0) {
+                       break;
+               }
+       }
+
+       exit(EXIT_SUCCESS);
+}