164 lines
3.6 KiB
C
164 lines
3.6 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_MOVE of mount(2).
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* "Move an existing mount point to the new location."
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*/
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#include <errno.h>
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#include <sys/mount.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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#ifndef MS_MOVE
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#define MS_MOVE 8192
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#endif
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#ifndef MS_PRIVATE
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#define MS_PRIVATE (1 << 18)
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#endif
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#define MNTPOINT_SRC "mnt_src"
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#define MNTPOINT_DES "mnt_des"
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#define LINELENGTH 256
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#define DIR_MODE (S_IRWXU | S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP)
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static int ismount(char *mntpoint);
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static void setup(void);
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static void cleanup(void);
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char *TCID = "mount06";
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int TST_TOTAL = 1;
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static const char *fs_type;
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static const char *device;
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static char path_name[PATH_MAX];
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static char mntpoint_src[PATH_MAX];
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static char mntpoint_des[PATH_MAX];
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static int mount_flag;
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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, NULL, NULL);
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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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SAFE_MOUNT(cleanup, device, mntpoint_src, fs_type, 0, NULL);
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TEST(mount(mntpoint_src, mntpoint_des, fs_type, MS_MOVE, 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 (!ismount(mntpoint_src) && ismount(mntpoint_des))
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tst_resm(TPASS, "move mount is ok");
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else
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tst_resm(TFAIL, "move mount does not work");
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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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int ismount(char *mntpoint)
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{
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int ret = 0;
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FILE *file;
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char line[LINELENGTH];
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file = fopen("/proc/mounts", "r");
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if (file == NULL)
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tst_brkm(TFAIL | TERRNO, NULL, "Open /proc/mounts failed");
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while (fgets(line, LINELENGTH, file) != NULL) {
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if (strstr(line, mntpoint) != NULL) {
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ret = 1;
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break;
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}
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}
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fclose(file);
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return ret;
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}
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static 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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fs_type = tst_dev_fs_type();
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device = tst_acquire_device(cleanup);
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if (!device)
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tst_brkm(TCONF, cleanup, "Failed to obtain block device");
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tst_mkfs(cleanup, device, fs_type, NULL, NULL);
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if (getcwd(path_name, sizeof(path_name)) == NULL)
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tst_brkm(TBROK, cleanup, "getcwd failed");
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/*
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* Turn current dir into a private mount point being a parent
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* mount which is required by move mount.
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*/
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SAFE_MOUNT(cleanup, path_name, path_name, "none", MS_BIND, NULL);
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mount_flag = 1;
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SAFE_MOUNT(cleanup, "none", path_name, "none", MS_PRIVATE, NULL);
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snprintf(mntpoint_src, PATH_MAX, "%s/%s", path_name, MNTPOINT_SRC);
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snprintf(mntpoint_des, PATH_MAX, "%s/%s", path_name, MNTPOINT_DES);
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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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TEST_PAUSE;
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}
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static void cleanup(void)
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{
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if (mount_flag && tst_umount(path_name) != 0)
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tst_resm(TWARN | TERRNO, "umount(2) %s failed", path_name);
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if (device)
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tst_release_device(device);
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tst_rmdir();
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}
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