zdtm: Add fanotify00 test

This one is pretty trivial and need to be extented for
more masks and flags, but fine for now.
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/zdtm.sh

@@ -129,6 +129,7 @@ static/socket-tcpbuf6
 static/eventfs00
 static/signalfd00
 static/inotify00
+static/fanotify00
 $IPC_TEST_LIST
 "
 

test/zdtm/live/static/Makefile

@@ -66,6 +66,7 @@ TST_NOFILE	=				\
 		eventfs00			\
 		signalfd00			\
 		inotify00			\
+		fanotify00			\
 		uptime_grow			\
 		session00			\
 		rlimits00			\

test/zdtm/live/static/fanotify00.c

+#define _GNU_SOURCE         /* See feature_test_macros(7) */
+#include <unistd.h>
+#include <limits.h>
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+#include <sys/inotify.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <linux/fanotify.h>
+
+#include "zdtmtst.h"
+
+#ifdef __x86_64__
+# define __NR_fanotify_init	300
+# define __NR_fanotify_mark	301
+#else
+# define __NR_fanotify_init	338
+# define __NR_fanotify_mark	339
+#endif
+
+const char *test_doc	= "Check for fanotify delivery";
+const char *test_author	= "Cyrill Gorcunov <gorcunov@openvz.org>";
+
+const char fanotify_path[] = "fanotify-del-after-cr";
+
+#define BUFF_SIZE ((sizeof(struct inotify_event) + PATH_MAX))
+
+static int fanotify_init(unsigned int flags, unsigned int event_f_flags)
+{
+	return syscall(__NR_fanotify_init, flags, event_f_flags);
+}
+
+static int fanotify_mark(int fanotify_fd, unsigned int flags, unsigned long mask,
+			 int dfd, const char *pathname)
+{
+	return syscall(__NR_fanotify_mark, fanotify_fd, flags, mask, dfd, pathname);
+}
+
+int main (int argc, char *argv[])
+{
+	char buf[BUFF_SIZE];
+	int fa_fd, fd, del_after;
+
+	test_init(argc, argv);
+
+	fa_fd = fanotify_init(FAN_NONBLOCK | O_RDONLY | O_LARGEFILE |
+			      FAN_CLASS_NOTIF | FAN_UNLIMITED_QUEUE,
+			      0);
+	if (fa_fd < 0) {
+		fail("fanotify_init failed\n");
+		exit(1);
+	}
+
+	del_after = open(fanotify_path, O_CREAT | O_TRUNC);
+	if (del_after < 0) {
+		fail("open failed\n");
+		exit(1);
+	}
+
+	if (fanotify_mark(fa_fd, FAN_MARK_ADD,
+			  FAN_MODIFY | FAN_ACCESS | FAN_OPEN | FAN_CLOSE,
+			  AT_FDCWD, fanotify_path)) {
+		fail("fanotify_mark failed\n");
+		exit(1);
+	}
+
+	if (fanotify_mark(fa_fd, FAN_MARK_ADD | FAN_MARK_MOUNT,
+			  FAN_ONDIR | FAN_OPEN | FAN_CLOSE,
+			  AT_FDCWD, "/")) {
+		fail("fanotify_mark failed\n");
+		exit(1);
+	}
+
+	if (fanotify_mark(fa_fd, FAN_MARK_ADD | FAN_MARK_MOUNT |
+			  FAN_MARK_IGNORED_MASK | FAN_MARK_IGNORED_SURV_MODIFY,
+			  FAN_MODIFY | FAN_ACCESS,
+			  AT_FDCWD, "/")) {
+		fail("fanotify_mark failed\n");
+		exit(1);
+	}
+
+	test_daemon();
+	test_waitsig();
+
+	fd = open("/", O_RDONLY);
+	close(fd);
+
+	fd = open(fanotify_path, O_RDWR);
+	close(fd);
+
+	if (unlink(fanotify_path)) {
+		fail("can't unlink %s\n", fanotify_path);
+		exit(1);
+	}
+
+	if (read(fa_fd, buf, sizeof(buf)) <= 0) {
+		fail("No events in fanotify queue\n");
+		exit(1);
+	}
+
+	pass();
+
+	return 0;
+}