| /* |
| * 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_MOVE of mount(2). |
| * "Move an existing mount point to the new location." |
| */ |
| |
| #include <errno.h> |
| #include <sys/mount.h> |
| #include <unistd.h> |
| #include <fcntl.h> |
| |
| #include "test.h" |
| #include "usctest.h" |
| #include "safe_macros.h" |
| |
| #ifndef MS_MOVE |
| #define MS_MOVE 8192 |
| #endif |
| |
| #ifndef MS_PRIVATE |
| #define MS_PRIVATE (1 << 18) |
| #endif |
| |
| #define MNTPOINT_SRC "mnt_src" |
| #define MNTPOINT_DES "mnt_des" |
| #define LINELENGTH 256 |
| #define DIR_MODE (S_IRWXU | S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP) |
| |
| static int ismount(char *mntpoint); |
| static void setup(void); |
| static void cleanup(void); |
| static void help(void); |
| |
| char *TCID = "mount06"; |
| int TST_TOTAL = 1; |
| |
| static char *fstype = "ext2"; |
| |
| static int dflag; |
| static char *device; |
| static char path_name[PATH_MAX]; |
| static char mntpoint_src[PATH_MAX]; |
| static char mntpoint_des[PATH_MAX]; |
| |
| static option_t options[] = { |
| {"T:", NULL, &fstype}, |
| {"D:", &dflag, &device}, |
| {NULL, NULL, NULL}, |
| }; |
| |
| int main(int argc, char *argv[]) |
| { |
| int lc; |
| char *msg; |
| |
| msg = parse_opts(argc, argv, options, &help); |
| if (msg != NULL) |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| |
| /* Check for mandatory option of the testcase */ |
| if (!dflag) |
| tst_brkm(TBROK, NULL, |
| "you must specify the device used for mounting with " |
| "the -D option"); |
| |
| if (STD_COPIES != 1) { |
| tst_resm(TINFO, "-c option has no effect for this testcase - " |
| "%s doesn't allow running more than one instance " |
| "at a time", TCID); |
| STD_COPIES = 1; |
| } |
| |
| setup(); |
| |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| tst_count = 0; |
| |
| if (mount(device, mntpoint_src, fstype, 0, NULL) == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, "mount %s failed", |
| mntpoint_src); |
| |
| TEST(mount(mntpoint_src, mntpoint_des, fstype, MS_MOVE, NULL)); |
| |
| if (TEST_RETURN != 0) { |
| tst_resm(TFAIL | TTERRNO, "mount(2) failed"); |
| } else { |
| |
| if (!ismount(mntpoint_src) && ismount(mntpoint_des)) |
| tst_resm(TPASS, "move mount is ok"); |
| else |
| tst_resm(TFAIL, "move mount does not work"); |
| |
| TEST(umount(mntpoint_des)); |
| if (TEST_RETURN != 0) |
| tst_brkm(TBROK | TTERRNO, cleanup, |
| "umount(2) failed"); |
| } |
| } |
| cleanup(); |
| |
| tst_exit(); |
| } |
| |
| int ismount(char *mntpoint) |
| { |
| int ret = 0; |
| FILE *file; |
| char line[LINELENGTH]; |
| |
| file = fopen("/proc/mounts", "r"); |
| if (file == NULL) |
| tst_brkm(TFAIL | TERRNO, NULL, "Open /proc/mounts failed"); |
| |
| while (fgets(line, LINELENGTH, file) != NULL) { |
| if (strstr(line, mntpoint) != NULL) { |
| ret = 1; |
| break; |
| } |
| } |
| fclose(file); |
| return ret; |
| } |
| |
| void setup(void) |
| { |
| tst_require_root(NULL); |
| tst_mkfs(NULL, device, fstype, NULL); |
| |
| tst_sig(NOFORK, DEF_HANDLER, cleanup); |
| |
| tst_tmpdir(); |
| |
| if (getcwd(path_name, sizeof(path_name)) == NULL) |
| tst_brkm(TBROK, cleanup, "getcwd failed"); |
| |
| /* |
| * Turn current dir into a private mount point being a parent |
| * mount which is required by move mount. |
| */ |
| if (mount(path_name, path_name, "none", MS_BIND, NULL) == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, "bind mount failed"); |
| |
| if (mount("none", path_name, "none", MS_PRIVATE, NULL) == -1) |
| tst_brkm(TBROK | TERRNO, cleanup, "mount private failed"); |
| |
| snprintf(mntpoint_src, PATH_MAX, "%s/%s", path_name, MNTPOINT_SRC); |
| snprintf(mntpoint_des, PATH_MAX, "%s/%s", path_name, MNTPOINT_DES); |
| |
| SAFE_MKDIR(cleanup, mntpoint_src, DIR_MODE); |
| SAFE_MKDIR(cleanup, mntpoint_des, DIR_MODE); |
| |
| TEST_PAUSE; |
| } |
| |
| void cleanup(void) |
| { |
| if (umount(path_name) != 0) |
| tst_brkm(TBROK | TERRNO, NULL, "umount(2) %s failed", |
| path_name); |
| |
| 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"); |
| } |