zdtm: Add testing of irmap cache generation

Signed-off-by: Pavel Emelyanov <xemul@parallels.com>

test/zdtm.sh

@@ -68,6 +68,7 @@ static/unlink_mmap02
 static/eventfs00
 static/signalfd00
 static/inotify00
+static/inotify_irmap
 static/fanotify00
 static/unbound_sock
 static/fifo-rowo-pair
@@ -162,6 +163,7 @@ maps007
 tempfs
 bind-mount
 mountpoints
+inotify_irmap
 "
 
 source $(readlink -f `dirname $0`/env.sh) || exit 1
@@ -469,6 +471,10 @@ EOF
 		ps_args="--auto-dedup"
 	fi
 
+	if echo $tname | fgrep -q 'irmap'; then
+		args="$args --force-irmap"
+	fi
+
 	for i in `seq $ITERATIONS`; do
 		local dump_only=
 		local postdump=

test/zdtm/live/static/Makefile

@@ -73,6 +73,7 @@ TST_NOFILE	=				\
 		eventfs00			\
 		signalfd00			\
 		inotify00			\
+		inotify_irmap			\
 		fanotify00			\
 		uptime_grow			\
 		session00			\

test/zdtm/live/static/inotify_irmap.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 "zdtmtst.h"
+
+const char *test_doc	= "Check for irmap";
+const char *test_author	= "Pavel Emelyanov <xemul@parallels.com>";
+
+#define TDIR	"/etc"
+#define TFIL	TDIR"/zdtm-test"
+
+#define BUFF_SIZE ((sizeof(struct inotify_event) + PATH_MAX))
+
+int main (int argc, char *argv[])
+{
+	char buf[BUFF_SIZE];
+	int fd, wd;
+
+	test_init(argc, argv);
+
+	mkdir(TDIR, 0600);
+	unlink(TFIL);
+	if (creat(TFIL, 0600) < 0) {
+		err("Can't make test file");
+		exit(1);
+	}
+
+	fd = inotify_init1(IN_NONBLOCK);
+	if (fd < 0) {
+		fail("inotify_init failed");
+		unlink(TFIL);
+		exit(1);
+	}
+
+	wd = inotify_add_watch(fd, TFIL, IN_OPEN);
+	if (wd < 0) {
+		fail("inotify_add_watch failed");
+		unlink(TFIL);
+		exit(1);
+	}
+
+	test_daemon();
+	test_waitsig();
+
+	memset(buf, 0, sizeof(buf));
+	wd = open(TFIL, O_RDONLY);
+	if (read(fd, buf, sizeof(buf)) <= 0) {
+		unlink(TFIL);
+		fail("No events in queue");
+		exit(1);
+	}
+
+	close(wd);
+	close(fd);
+	unlink(TFIL);
+	pass();
+	return 0;
+}