Set(const uid_t newuid,
const gid_t newgid)
{
if(!initialized)
{
currentuid = GETEUID();
currentgid = GETEGID();
initialized = true;
}
if(newuid == currentuid && newgid == currentgid)
return;
if(currentuid != 0)
{
SETREUID(-1,0);
SETREGID(-1,0);
}
if(newgid)
{
SETREGID(-1,newgid);
initgroups(newuid,newgid);
}
if(newuid)
SETREUID(-1,newuid);
currentuid = newuid;
currentgid = newgid;
}
int main(int ac, char **av)
{
int lc;
const char *msg;
if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL)
tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
setup();
flag = 0;
for (lc = 0; TEST_LOOPING(lc); lc++) {
int i, pid, status;
tst_count = 0;
if ((pid = FORK_OR_VFORK()) == -1) {
tst_brkm(TBROK, cleanup, "fork failed");
} else if (pid == 0) { /* child */
for (i = 0; i < TST_TOTAL; i++) {
/* Set the real or effective user id */
TEST(SETREUID(cleanup, *test_data[i].real_uid,
*test_data[i].eff_uid));
if (TEST_RETURN != -1) {
tst_resm(TPASS, "setreuid(%d, %d) "
"succeeded as expected.",
*test_data[i].real_uid,
*test_data[i].eff_uid);
} else {
tst_resm(TFAIL, "setreuid(%d, %d) "
"did not return as expected.",
*test_data[i].real_uid,
*test_data[i].eff_uid);
flag = -1;
}
if (STD_FUNCTIONAL_TEST) {
uid_verify(test_data[i].exp_real_usr,
test_data[i].exp_eff_usr,
test_data[i].test_msg);
} else {
tst_resm(TINFO, "Call succeeded.");
}
}
exit(flag);
} else { /* parent */
waitpid(pid, &status, 0);
if (WEXITSTATUS(status) != 0) {
tst_resm(TFAIL, "test failed within "
"child process.");
}
}
}
cleanup();
tst_exit();
}
int main(int argc, char **argv)
{
int lc;
tst_parse_opts(argc, argv, NULL, NULL);
setup();
for (lc = 0; TEST_LOOPING(lc); lc++) {
tst_count = 0;
TEST(SETREUID(cleanup, -1, INVAL_USER));
if (TEST_RETURN != -1) {
tst_resm(TFAIL, "%s did not fail as expected", TCID);
} else if (TEST_ERRNO == EPERM) {
tst_resm(TPASS, "setreuid set errno to EPERM as "
"expected");
} else {
tst_resm(TFAIL, "setreuid FAILED, expected 1 but "
"returned %d", TEST_ERRNO);
}
}
cleanup();
tst_exit();
}
int main(int ac, char **av)
{
int lc;
char *msg;
if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL)
tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
setup();
for (lc = 0; TEST_LOOPING(lc); lc++) {
int i;
tst_count = 0;
for (i = 0; i < TST_TOTAL; i++) {
/* Set the real or effective user id */
TEST(SETREUID(cleanup, *test_data[i].real_uid,
*test_data[i].eff_uid));
if (TEST_RETURN == -1) {
TEST_ERROR_LOG(TEST_ERRNO);
tst_resm(TBROK, "setreuid(%d, %d) failed",
*test_data[i].real_uid,
*test_data[i].eff_uid);
} else {
if (STD_FUNCTIONAL_TEST) {
uid_verify(test_data[i].exp_real_usr,
test_data[i].exp_eff_usr,
test_data[i].test_msg);
} else {
tst_resm(TPASS, "Call succeeded.");
}
}
}
}
cleanup();
tst_exit();
}
int main(int argc, char **argv)
{
int lc;
const char *msg;
if ((msg = parse_opts(argc, argv, NULL, NULL)) != NULL)
tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
setup();
pass = 0;
for (lc = 0; TEST_LOOPING(lc); lc++) {
int i, pid;
tst_count = 0;
if ((pid = FORK_OR_VFORK()) == -1) {
tst_brkm(TBROK, cleanup, "fork failed");
} else if (pid == 0) { /* child */
for (i = 0; i < TST_TOTAL; i++) {
/* Set the real or effective user id */
TEST(SETREUID(cleanup, *test_data[i].real_uid,
*test_data[i].eff_uid));
if (TEST_RETURN == *test_data[i].exp_ret) {
if (TEST_RETURN == neg_one) {
if (TEST_ERRNO != EPERM) {
tst_resm(TFAIL,
"setreuid(%d, %d) "
"did not set errno "
"value as expected.",
*test_data
[i].real_uid,
*test_data
[i].eff_uid);
continue;
}
tst_resm(TPASS,
"setreuid(%d, %d) "
"failed as expected.",
*test_data[i].real_uid,
*test_data[i].eff_uid);
} else {
tst_resm(TPASS,
"setreuid(%d, %d) "
"succeeded as expected.",
*test_data[i].real_uid,
*test_data[i].eff_uid);
}
} else {
tst_resm(TFAIL, "setreuid(%d, %d) "
"did not return as expected.",
*test_data[i].real_uid,
*test_data[i].eff_uid);
}
if (TEST_RETURN == -1) {
TEST_ERROR_LOG(TEST_ERRNO);
}
uid_verify(test_data[i].exp_real_usr,
test_data[i].exp_eff_usr,
test_data[i].test_msg);
}
tst_exit();
} else { /* parent */
tst_record_childstatus(cleanup, pid);
}
}
cleanup();
tst_exit();
}
static void do_master_child(void)
{
int lc;
int pid;
int status;
for (lc = 0; TEST_LOOPING(lc); lc++) {
int tst_fd;
tst_count = 0;
if (SETREUID(NULL, 0, ltpuser->pw_uid) == -1) {
perror("setreuid failed");
exit(TFAIL);
}
/* Test 1: Check the process with new uid cannot open the file
* with RDWR permissions.
*/
TEST(tst_fd = open(testfile, O_RDWR));
if (TEST_RETURN != -1) {
printf("open succeeded unexpectedly\n");
close(tst_fd);
exit(TFAIL);
}
if (TEST_ERRNO == EACCES) {
printf("open failed with EACCES as expected\n");
} else {
perror("open failed unexpectedly");
exit(TFAIL);
}
/* Test 2: Check a son process cannot open the file
* with RDWR permissions.
*/
pid = FORK_OR_VFORK();
if (pid < 0)
tst_brkm(TBROK, cleanup, "Fork failed");
if (pid == 0) {
int tst_fd2;
/* Test to open the file in son process */
TEST(tst_fd2 = open(testfile, O_RDWR));
if (TEST_RETURN != -1) {
printf("call succeeded unexpectedly\n");
close(tst_fd2);
exit(TFAIL);
}
if (TEST_ERRNO == EACCES) {
printf("open failed with EACCES as expected\n");
exit(TPASS);
} else {
printf("open failed unexpectedly\n");
exit(TFAIL);
}
} else {
/* Wait for son completion */
if (waitpid(pid, &status, 0) == -1) {
perror("waitpid failed");
exit(TFAIL);
}
if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0))
exit(WEXITSTATUS(status));
}
/* Test 3: Fallback to initial uid and check we can again open
* the file with RDWR permissions.
*/
tst_count++;
if (SETREUID(NULL, 0, 0) == -1) {
perror("setreuid failed");
exit(TFAIL);
}
TEST(tst_fd = open(testfile, O_RDWR));
if (TEST_RETURN == -1) {
perror("open failed unexpectedly");
exit(TFAIL);
} else {
printf("open call succeeded\n");
close(tst_fd);
}
}
exit(TPASS);
}
