123 lines
2.8 KiB
C
123 lines
2.8 KiB
C
/* $NetBSD: snapshot.c,v 1.4 2010/06/04 08:39:40 jmmv Exp $ */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/mount.h>
|
|
|
|
#include <dev/fssvar.h>
|
|
|
|
#include <atf-c.h>
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
ATF_TC_WITH_CLEANUP(snapshot);
|
|
ATF_TC_HEAD(snapshot, tc)
|
|
{
|
|
|
|
atf_tc_set_md_var(tc, "descr", "basic snapshot features");
|
|
atf_tc_set_md_var(tc, "use.fs", "true");
|
|
}
|
|
|
|
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 fss_set fss;
|
|
int fssfd;
|
|
int fd, fd2, i;
|
|
|
|
if (system(NEWFS) == -1)
|
|
atf_tc_fail_errno("cannot create file system");
|
|
|
|
rump_init();
|
|
begin();
|
|
|
|
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("/diskdev", IMGNAME, RUMP_ETFS_BLK);
|
|
|
|
mount_diskfs("/diskdev", "/mnt");
|
|
|
|
#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");
|
|
|
|
for (i = 0; i < 10000; i++) {
|
|
if (rump_sys_write(fd, TESTSTR2, TESTSZ2) != TESTSZ2)
|
|
atf_tc_fail_errno("write fail");
|
|
}
|
|
rump_sys_sync();
|
|
|
|
/* technically we should fsck it first? */
|
|
mount_diskfs("/dev/fss0", "/snap");
|
|
|
|
/* 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");
|
|
ATF_CHECK(strcmp(buf, TESTSTR1) == 0);
|
|
|
|
/* 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");
|
|
|
|
/* done for now */
|
|
}
|
|
|
|
ATF_TC_CLEANUP(snapshot, tc)
|
|
{
|
|
|
|
unlink(IMGNAME);
|
|
}
|
|
|
|
ATF_TP_ADD_TCS(tp)
|
|
{
|
|
ATF_TP_ADD_TC(tp, snapshot);
|
|
return 0;
|
|
}
|