regression test for kern/40948

tests/fs/ffs/Atffile

@@ -0,0 +1,6 @@
+Content-Type: application/X-atf-atffile; version="1"
+X-NetBSD-Id: "$NetBSD: Atffile,v 1.1 2009/04/08 12:08:17 pooka Exp $"
+
+prop: test-suite = "NetBSD"
+
+tp: t_renamerace

tests/fs/ffs/Makefile

@@ -0,0 +1,11 @@
+#	$NetBSD: Makefile,v 1.1 2009/04/08 12:08:17 pooka Exp $
+#
+
+TESTSDIR=	${TESTSBASE}/fs/ffs
+
+TESTS_C=	t_renamerace
+
+LDADD.t_renamerace+=	-lukfs -lrumpfs_ffs -lrumpfs_ufs -lrumpvfs -lrump
+LDADD.t_renamerace+=	-lrumpuser -lpthread
+
+.include <bsd.test.mk>

tests/fs/ffs/t_renamerace.c

@@ -0,0 +1,130 @@
+/*	$NetBSD: t_renamerace.c,v 1.1 2009/04/08 12:08:17 pooka Exp $	*/
+
+/*
+ * Modified for rump and atf from a program supplied
+ * by Nicolas Joly in kern/40948
+ */
+
+#include <sys/types.h>
+#include <sys/mount.h>
+
+#include <atf-c.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+
+#include <rump/rump.h>
+#include <rump/rump_syscalls.h>
+#include <rump/ukfs.h>
+
+#include <ufs/ufs/ufsmount.h>
+
+ATF_TC_WITH_CLEANUP(renamerace);
+ATF_TC_HEAD(renamerace, tc)
+{
+	atf_tc_set_md_var(tc, "descr", "rename(2) race against files "
+	    "unlinked mid-operation, kern/40948");
+}
+
+int quit;
+
+static void *
+w1(void *arg)
+{
+	int fd;
+
+	while (!quit) {
+		fd = rump_sys_open("/rename.test1",
+		    O_WRONLY|O_CREAT|O_TRUNC, 0666);
+		rump_sys_unlink("/rename.test1");
+		rump_sys_close(fd);
+	}
+	return NULL;
+}
+
+static void *
+w2(void *arg)
+{
+
+	while (!quit)
+		rump_sys_rename("/rename.test1", "/rename.test2");
+
+	return NULL;
+}
+
+/* XXX: how to do cleanup if we use mkdtemp? */
+#define IMAGENAME "/tmp/ffsatf.img"
+static char image[MAXPATHLEN];
+
+ATF_TC_BODY(renamerace, tc)
+{
+	struct ufs_args args;
+	char cmd[256];
+	struct ukfs *fs;
+	pthread_t pt1, pt2;
+
+#if 0
+	strcpy(image, TMPPATH);
+	if (mkdtemp(image) == NULL)
+		atf_tc_fail("can't create tmpdir %s: %d (%s)",
+		    TMPPATH, errno, strerror(errno));
+	strcat(image, "/ffsatf.img");
+#else
+	strcpy(image, IMAGENAME);
+#endif
+
+	strcpy(cmd, "newfs -F -s 10000 ");
+	strcat(cmd, image);
+
+	if (system(cmd) == -1)
+		atf_tc_fail("newfs failed: %d (%s)", errno, strerror(errno));
+
+	memset(&args, 0, sizeof(args));
+	args.fspec = image;
+
+	ukfs_init();
+	fs = ukfs_mount(MOUNT_FFS, "ffs", UKFS_DEFAULTMP,
+	    0, &args, sizeof(args));
+	if (fs == NULL)
+		atf_tc_fail("ukfs_mount failed: %d (%s)",
+		    errno, strerror(errno));
+
+	pthread_create(&pt1, NULL, w1, fs);
+	pthread_create(&pt2, NULL, w2, fs);
+
+	sleep(10);
+
+	quit = 1;
+	pthread_join(pt1, NULL);
+	pthread_join(pt2, NULL);
+
+	ukfs_release(fs, 0);
+}
+
+ATF_TC_CLEANUP(renamerace, tc)
+{
+#if 0
+	char *img;
+
+	img = strrchr(image, '/');
+	if (!img)
+		return;
+
+	printf("removing %s\n", img+1);
+	unlink(img+1);
+	*img = '\0';
+	rmdir(img);
+#else
+	unlink(IMAGENAME);
+#endif
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+	ATF_TP_ADD_TC(tp, renamerace);
+	return 0; /* ??? */
+}