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