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/*
* Copyright (c) 2013 Fujitsu Ltd.
* Author: DAN LI <li.dan@cn.fujitsu.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it would be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
/*
* DESCRIPTION
* Test for feature MS_BIND of mount.
* "Perform a bind mount, making a file or a directory subtree visible
* at another point within a file system."
*/
#include <errno.h>
#include <sys/mount.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <fcntl.h>
#include "test.h"
#include "usctest.h"
#include "safe_macros.h"
static void help(void);
static void setup(void);
static void cleanup(void);
char *TCID = "mount05";
int TST_TOTAL = 1;
#define DIR_MODE (S_IRWXU | S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP)
static int dflag;
static char *fstype = "ext2";
static char *device;
static const char file_src[] = "mnt_src/tstfile";
static const char file_des[] = "mnt_des/tstfile";
static const char mntpoint_src[] = "mnt_src";
static const char mntpoint_des[] = "mnt_des";
static option_t options[] = {
{"T:", NULL, &fstype},
{"D:", &dflag, &device},
{NULL, NULL, NULL},
};
int main(int argc, char *argv[])
{
int lc;
const char *msg;
msg = parse_opts(argc, argv, options, &help);
if (msg != NULL)
tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
setup();
for (lc = 0; TEST_LOOPING(lc); lc++) {
tst_count = 0;
TEST(mount(mntpoint_src, mntpoint_des, fstype, MS_BIND, NULL));
if (TEST_RETURN != 0) {
tst_resm(TFAIL | TTERRNO, "mount(2) failed");
} else {
if (open(file_des, O_CREAT | O_EXCL, S_IRWXU) == -1 &&
errno == EEXIST)
tst_resm(TPASS, "bind mount is ok");
else
tst_resm(TFAIL, "file %s is not available",
file_des);
TEST(umount(mntpoint_des));
if (TEST_RETURN != 0)
tst_brkm(TBROK | TTERRNO, cleanup,
"umount(2) failed");
}
}
cleanup();
tst_exit();
}
void setup(void)
{
tst_require_root(NULL);
tst_sig(NOFORK, DEF_HANDLER, cleanup);
tst_tmpdir();
SAFE_MKDIR(cleanup, mntpoint_src, DIR_MODE);
SAFE_MKDIR(cleanup, mntpoint_des, DIR_MODE);
if (dflag) {
tst_mkfs(NULL, device, fstype, NULL);
if (mount(device, mntpoint_src, fstype, 0, NULL) == -1)
tst_brkm(TBROK | TERRNO, cleanup, "mount failed");
}
SAFE_FILE_PRINTF(cleanup, file_src, "TEST FILE");
TEST_PAUSE;
}
void cleanup(void)
{
if (dflag)
if (umount(mntpoint_src) != 0)
tst_brkm(TBROK | TTERRNO, NULL, "umount(2) failed");
TEST_CLEANUP;
tst_rmdir();
}
void help(void)
{
printf("-T type : specifies the type of filesystem to be mounted. "
"Default ext2.\n");
printf("-D device : device used for mounting.\n");
}
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