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/*
* Copyright (c) Wipro Technologies Ltd, 2002. All Rights Reserved.
*
* 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
* Verify that mount(2) returns -1 and sets errno to EPERM if the user
* is not the super-user.
*
* RESTRICTIONS
* test must be run with the -D option
* test doesn't support -c option to run it in parallel, as mount
* syscall is not supposed to run in parallel.
*/
#include <errno.h>
#include <sys/mount.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/fcntl.h>
#include <pwd.h>
#include "test.h"
#include "usctest.h"
static void help(void);
static void setup(void);
static void cleanup(void);
char *TCID = "mount04";
#define DIR_MODE S_IRWXU | S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP
static char *mntpoint = "mntpoint";
static char *fstype = "ext2";
static char *device;
static int Dflag = 0;
static struct test_case_t {
char *err_desc; /* error description */
int exp_errno; /* Expected error no */
char *exp_errval; /* Expected error value string */
} testcases[] = {
{
"User not Super User/root", EPERM, "EPERM"}
};
int TST_TOTAL = sizeof(testcases) / sizeof(testcases[0]);
static int exp_enos[] = { EPERM, 0 };
static option_t options[] = {
{"T:", NULL, &fstype},
{"D:", &Dflag, &device},
{NULL, NULL, NULL}
};
int main(int ac, char **av)
{
int lc, i;
const char *msg;
if ((msg = parse_opts(ac, av, options, &help)) != NULL)
tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
if (Dflag == 0) {
tst_brkm(TBROK, NULL, "You must specifiy the device used for "
" mounting with -D option.");
tst_exit();
}
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;
for (i = 0; i < TST_TOTAL; ++i) {
TEST(mount(device, mntpoint, fstype, 0, NULL));
/* check return code */
if ((TEST_RETURN == -1) &&
(TEST_ERRNO == testcases[i].exp_errno)) {
tst_resm(TPASS, "mount(2) expected failure; "
"Got errno - %s : %s",
testcases[i].exp_errval,
testcases[i].err_desc);
} else {
if (umount(mntpoint) == -1) {
tst_brkm(TBROK, cleanup, "umount(2) "
"failed to umount mntpoint %s "
"errno - %d : %s", mntpoint,
TEST_ERRNO,
strerror(TEST_ERRNO));
}
tst_resm(TFAIL, "mount(2) failed to produce "
"expected error; %d, errno:%s got %d",
testcases[i].exp_errno,
testcases[i].exp_errval, TEST_ERRNO);
}
TEST_ERROR_LOG(TEST_ERRNO);
}
}
cleanup();
tst_exit();
}
static void setup(void)
{
char nobody_uid[] = "nobody";
struct passwd *ltpuser;
tst_sig(FORK, DEF_HANDLER, cleanup);
tst_require_root(NULL);
tst_mkfs(NULL, device, fstype, NULL);
ltpuser = getpwnam(nobody_uid);
if (seteuid(ltpuser->pw_uid) == -1) {
tst_brkm(TBROK, cleanup,
"seteuid() failed to change euid to %d "
"errno = %d : %s", ltpuser->pw_uid, TEST_ERRNO,
strerror(TEST_ERRNO));
}
tst_tmpdir();
if (mkdir(mntpoint, DIR_MODE)) {
tst_brkm(TBROK, cleanup, "mkdir(%s, %#o) failed; "
"errno = %d: %s", mntpoint, DIR_MODE, errno,
strerror(errno));
}
TEST_EXP_ENOS(exp_enos);
TEST_PAUSE;
return;
}
static void cleanup(void)
{
TEST_CLEANUP;
tst_rmdir();
/* Set effective user id back to root */
if (seteuid(0) == -1) {
tst_resm(TINFO, "seteuid failed to "
"to set the effective uid to root");
perror("seteuid");
}
return;
}
static 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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