minix/tests/fs/common/snapshot.c
Lionel Sambuc 11be35a165 Importing NetBSD "Kyua" test framework
To do so, a few dependencies have been imported:

 * external/bsd/lutok
 * external/mit/lua
 * external/public-domain/sqlite
 * external/public-domain/xz

The Kyua framework is the new generation of ATF (Automated Test
Framework), it is composed of:

 * external/bsd/atf
 * external/bsd/kyua-atf-compat
 * external/bsd/kyua-cli
 * external/bsd/kyua-tester
 * tests

Kyua/ATF being written in C++, it depends on libstdc++ which is
provided by GCC. As this is not part of the sources, Kyua is only
compiled when the native GCC utils are installed.

To install Kyua do the following:

 * In a cross-build enviromnent, add the following to the build.sh
   commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes

WARNING:
  At this point the import is still experimental, and not supported
  on native builds (a.k.a make build).

Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada
2013-07-23 20:43:41 +02:00

228 lines
5.2 KiB
C

/* $NetBSD: snapshot.c,v 1.7 2013/02/06 09:05:01 hannken 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 <pthread.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");
}
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 (fssfd == -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_TC_WITH_CLEANUP(snapshotstress);
ATF_TC_HEAD(snapshotstress, tc)
{
atf_tc_set_md_var(tc, "descr", "snapshot on active file system");
}
#define NACTIVITY 4
static bool activity_stop = false;
static pid_t wrkpid;
static void *
fs_activity(void *arg)
{
int di, fi;
char *prefix = arg, path[128];
rump_pub_lwproc_newlwp(wrkpid);
RL(rump_sys_mkdir(prefix, 0777));
while (! activity_stop) {
for (di = 0; di < 5; di++) {
snprintf(path, sizeof(path), "%s/d%d", prefix, di);
RL(rump_sys_mkdir(path, 0777));
for (fi = 0; fi < 5; fi++) {
snprintf(path, sizeof(path), "%s/d%d/f%d",
prefix, di, fi);
makefile(path);
}
}
for (di = 0; di < 5; di++) {
for (fi = 0; fi < 5; fi++) {
snprintf(path, sizeof(path), "%s/d%d/f%d",
prefix, di, fi);
RL(rump_sys_unlink(path));
}
snprintf(path, sizeof(path), "%s/d%d", prefix, di);
RL(rump_sys_rmdir(path));
}
}
RL(rump_sys_rmdir(prefix));
rump_pub_lwproc_releaselwp();
return NULL;
}
ATF_TC_BODY(snapshotstress, tc)
{
pthread_t at[NACTIVITY];
struct fss_set fss;
char prefix[NACTIVITY][128];
int i, fssfd;
if (system(NEWFS) == -1)
atf_tc_fail_errno("cannot create file system");
/* Force SMP so the stress makes sense. */
RL(setenv("RUMP_NCPU", "4", 1));
RZ(rump_init());
/* Prepare for fsck to use the RUMP /dev/fss0. */
RL(rump_init_server("unix://commsock"));
RL(setenv("LD_PRELOAD", "/usr/lib/librumphijack.so", 1));
RL(setenv("RUMP_SERVER", "unix://commsock", 1));
RL(setenv("RUMPHIJACK", "blanket=/dev/rfss0", 1));
begin();
RL(rump_sys_mkdir("/mnt", 0777));
rump_pub_etfs_register("/diskdev", IMGNAME, RUMP_ETFS_BLK);
mount_diskfs("/diskdev", "/mnt");
/* Start file system activity. */
RL(wrkpid = rump_sys_getpid());
for (i = 0; i < NACTIVITY; i++) {
snprintf(prefix[i], sizeof(prefix[i]), "/mnt/a%d", i);
RL(pthread_create(&at[i], NULL, fs_activity, prefix[i]));
sleep(1);
}
fssfd = rump_sys_open("/dev/rfss0", O_RDWR);
if (fssfd == -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");
activity_stop = true;
for (i = 0; i < NACTIVITY; i++)
RL(pthread_join(at[i], NULL));
RL(system(FSCK " /dev/rfss0"));
}
ATF_TC_CLEANUP(snapshotstress, tc)
{
unlink(IMGNAME);
}
ATF_TP_ADD_TCS(tp)
{
ATF_TP_ADD_TC(tp, snapshot);
ATF_TP_ADD_TC(tp, snapshotstress);
return 0;
}