[src/trunk]: src/tests/fs/ffs test for the very basic snapshot features

[pooka <pooka%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/c92bc6934e46
branches:  trunk
changeset: 753867:c92bc6934e46
user:      pooka <pooka%NetBSD.org@localhost>
date:      Mon Apr 12 22:58:53 2010 +0000

description:
test for the very basic snapshot features

diffstat:

 tests/fs/ffs/Makefile     |    4 +-
 tests/fs/ffs/t_snapshot.c |  136 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 139 insertions(+), 1 deletions(-)

diffs (160 lines):

diff -r fcaa44531572 -r c92bc6934e46 tests/fs/ffs/Makefile
--- a/tests/fs/ffs/Makefile     Mon Apr 12 22:38:36 2010 +0000
+++ b/tests/fs/ffs/Makefile     Mon Apr 12 22:58:53 2010 +0000
@@ -1,4 +1,4 @@
-#      $NetBSD: Makefile,v 1.6 2010/03/29 13:26:32 pooka Exp $
+#      $NetBSD: Makefile,v 1.7 2010/04/12 22:58:53 pooka Exp $
 #
 
 TESTSDIR=      ${TESTSBASE}/fs/ffs
@@ -6,8 +6,10 @@
 
 TESTS_C=       t_renamerace
 TESTS_C+=      t_fifos
+TESTS_C+=      t_snapshot
 
 LDADD+=-lrumpfs_ffs                                            # ffs
+LDADD+=-lrumpdev_fss                                           # snapshot dev
 LDADD+=-lrumpdev_disk -lrumpdev                                        # disk device
 LDADD+=-lrumpvfs_fifofs -lrumpnet_local -lrumpnet_net -lrumpnet        # fifos
 LDADD+=-lrumpvfs -lrump -lrumpuser -lpthread                   # base
diff -r fcaa44531572 -r c92bc6934e46 tests/fs/ffs/t_snapshot.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/tests/fs/ffs/t_snapshot.c Mon Apr 12 22:58:53 2010 +0000
@@ -0,0 +1,136 @@
+/*     $NetBSD: t_snapshot.c,v 1.1 2010/04/12 22:58:53 pooka Exp $     */
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/mount.h>
+
+#include <dev/fssvar.h>
+
+#include <rump/rump.h>
+#include <rump/rump_syscalls.h>
+
+#include <ufs/ufs/ufsmount.h>
+
+#include <atf-c.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "../../h_macros.h"
+
+#define IMGNAME "ffs.img"
+#define NEWFS "newfs -F -s 10000 " IMGNAME
+#define BAKNAME "/mnt/bak.img"
+
+ATF_TC_WITH_CLEANUP(snapshot);
+ATF_TC_HEAD(snapshot, tc)
+{
+
+       atf_tc_set_md_var(tc, "descr", "basic snapshot features");
+}
+
+static void
+makefile(const char *path)
+{
+       int fd;
+
+       fd = rump_sys_open(path, O_CREAT | O_RDWR, 0777);
+       if (fd == -1)
+               atf_tc_fail_errno("create %s", path);
+       rump_sys_close(fd);
+}
+
+ATF_TC_BODY(snapshot, tc)
+{
+       char buf[1024];
+       struct ufs_args uargs;
+       struct fss_set fss;
+       int fssfd;
+       int fd, fd2;
+
+       if (system(NEWFS) == -1)
+               atf_tc_fail_errno("cannot create file system");
+
+       rump_init();
+
+       if (rump_sys_mkdir("/mnt", 0777) == -1)
+               atf_tc_fail_errno("mount point create");
+       if (rump_sys_mkdir("/snap", 0777) == -1)
+               atf_tc_fail_errno("mount point 2 create");
+
+       rump_pub_etfs_register("./ffs.img", "./ffs.img", RUMP_ETFS_BLK);
+
+       uargs.fspec = __UNCONST("./ffs.img");
+
+       if (rump_sys_mount(MOUNT_FFS, "/mnt", 0, &uargs, sizeof(uargs)) == -1)
+               atf_tc_fail_errno("mount ffs");
+
+#define TESTSTR1 "huihai\n"
+#define TESTSZ1 (sizeof(TESTSTR1)-1)
+#define TESTSTR2 "baana liten\n"
+#define TESTSZ2 (sizeof(TESTSTR2)-1)
+
+       fd = rump_sys_open("/mnt/myfile", O_RDWR | O_CREAT, 0777);
+       if (fd == -1)
+               atf_tc_fail_errno("create file");
+       if (rump_sys_write(fd, TESTSTR1, TESTSZ1) != TESTSZ1)
+               atf_tc_fail_errno("write fail");
+
+       fssfd = rump_sys_open("/dev/rfss0", O_RDWR);
+       if (fd == -1)
+               atf_tc_fail_errno("cannot open fss");
+       makefile(BAKNAME);
+       memset(&fss, 0, sizeof(fss));
+       fss.fss_mount = __UNCONST("/mnt");
+       fss.fss_bstore = __UNCONST(BAKNAME);
+       fss.fss_csize = 0;
+       if (rump_sys_ioctl(fssfd, FSSIOCSET, &fss) == -1)
+               atf_tc_fail_errno("create snapshot");
+
+       if (rump_sys_pwrite(fd, TESTSTR2, TESTSZ2, 0) != TESTSZ2)
+               atf_tc_fail_errno("write fail");
+       rump_sys_sync();
+
+       uargs.fspec = __UNCONST("/dev/fss0");
+
+       /* technically we should fsck it first? */
+       if (rump_sys_mount(MOUNT_FFS, "/snap", 0, &uargs, sizeof(uargs)) == -1)
+               atf_tc_fail_errno("mount snapshot");
+
+       /* check for old contents */
+       fd2 = rump_sys_open("/snap/myfile", O_RDONLY);
+       if (fd2 == -1)
+               atf_tc_fail_errno("fail");
+       memset(buf, 0, sizeof(buf));
+       if (rump_sys_read(fd2, buf, sizeof(buf)) == -1)
+               atf_tc_fail_errno("read snap");
+
+       /* check that new files are invisible in the snapshot */
+       makefile("/mnt/newfile");
+       if (rump_sys_open("/snap/newfile", O_RDONLY) != -1)
+               atf_tc_fail("newfile exists in snapshot");
+       if (errno != ENOENT)
+               atf_tc_fail_errno("newfile open should fail with ENOENT");
+
+       /* check that removed files are still visible in the snapshot */
+       rump_sys_unlink("/mnt/myfile");
+
+       if (rump_sys_open("/snap/myfile", O_RDONLY) == -1)
+               atf_tc_fail_errno("unlinked file no longer in snapshot");
+
+       ATF_CHECK(strcmp(buf, TESTSTR1) == 0);
+}
+
+ATF_TC_CLEANUP(snapshot, tc)
+{
+
+       unlink(IMGNAME);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+       ATF_TP_ADD_TC(tp, snapshot);
+       return 0;
+}