| /* |
| * Copyright (C) Bull S.A. 2005. $ |
| * |
| * 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. |
| * |
| */ |
| /************************************************************************** |
| * |
| * TEST IDENTIFIER : mlockall03 |
| * |
| * EXECUTED BY : root / superuser |
| * |
| * TEST TITLE : Test for checking basic error conditions for |
| * mlockall(2) |
| * |
| * TEST CASE TOTAL : 3 |
| * |
| * AUTHOR : Jacky Malcles |
| * |
| * SIGNALS |
| * Uses SIGUSR1 to pause before test if option set. |
| * (See the parse_opts(3) man page). |
| * |
| * DESCRIPTION |
| *$ |
| * Verify that mlockall(2) returns -1 and sets errno to |
| * |
| * 1) ENOMEM - If the caller had a non-zero RLIMIT_MEMLOCK |
| * and tried to lock more memory than the limit permitted. |
| * 2) EPERM - If the caller was not privileged |
| * and its RLIMIT_MEMLOCK soft resource limit was 0. |
| * 3) EINVAL - Unknown flags were specified. |
| * |
| * Setup: |
| * Setup signal handling. |
| * Pause for SIGUSR1 if option specified. |
| * |
| * Test: |
| * Loop if the proper options are given. |
| * Do necessary setup for each test. |
| * Execute system call |
| * Check return code, if system call failed and errno == expected errno |
| * Issue sys call passed with expected return value and errno. |
| * Otherwise, |
| * Issue sys call failed to produce expected error. |
| * Do cleanup for each test. |
| * |
| * Cleanup: |
| * Print errno log and/or timing stats if options given |
| * |
| * USAGE: <for command-line> |
| * mlockall03 [-c n] [-e] [-i n] [-I x] [-p x] [-t] |
| * where, |
| * -c n : Run n copies concurrently |
| * -e : Turn on errno logging. |
| * -h : Show this help screen |
| * -i n : Execute test n times. |
| * -I x : Execute test for x seconds. |
| * -p : Pause for SIGUSR1 before starting |
| * -P x : Pause for x seconds between iterations. |
| * -t : Turn on syscall timing. |
| * |
| * RESTRICTIONS |
| * Test must run as root. |
| *****************************************************************************/ |
| #include <errno.h> |
| #include <unistd.h> |
| #include <pwd.h> |
| #include <ctype.h> |
| #include <sys/mman.h> |
| #include "test.h" |
| #include "usctest.h" |
| #include <sys/resource.h> |
| #include <sys/utsname.h> |
| |
| void setup(); |
| int setup_test(int); |
| int compare(char s1[], char s2[]); |
| void cleanup_test(int); |
| void cleanup(); |
| |
| char *TCID = "mlockall03"; |
| int TST_TOTAL = 3; |
| |
| #if !defined(UCLINUX) |
| |
| char *ref_release = "2.6.8\0"; |
| int exp_enos[] = { ENOMEM, EPERM, EINVAL, 0 }; |
| |
| struct test_case_t { |
| int flag; /* flag value */ |
| int error; /* error description */ |
| char *edesc; /* Expected error no */ |
| } TC[] = { |
| { |
| MCL_CURRENT, ENOMEM, |
| "tried to lock more memory than the limit permitted"}, { |
| MCL_CURRENT, EPERM, "Not a superuser and RLIMIT_MEMLOCK was 0"}, { |
| ~(MCL_CURRENT | MCL_FUTURE), EINVAL, "Unknown flag"} |
| }; |
| |
| int main(int ac, char **av) |
| { |
| int lc, i; |
| const char *msg; |
| struct utsname *buf; |
| |
| if ((msg = parse_opts(ac, av, NULL, NULL)) != NULL) { |
| tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg); |
| tst_exit(); |
| } |
| |
| /* allocate some space for buf */ |
| if ((buf = (struct utsname *)malloc((size_t) |
| sizeof(struct utsname))) == NULL) { |
| tst_resm(TFAIL, "malloc failed for buf"); |
| tst_exit(); |
| } |
| |
| if (uname(buf) < 0) { |
| tst_resm(TFAIL, "uname failed getting release number"); |
| } |
| |
| if ((compare(ref_release, buf->release)) <= 0) { |
| tst_resm(TCONF, |
| "In Linux 2.6.8 and earlier this test will not run."); |
| tst_exit(); |
| } |
| |
| setup(); |
| |
| /* check looping state */ |
| for (lc = 0; TEST_LOOPING(lc); lc++) { |
| |
| tst_count = 0; |
| |
| for (i = 0; i < TST_TOTAL; i++) { |
| |
| if (setup_test(i)) { |
| tst_resm(TFAIL, "mlockall() Failed while setup " |
| "for checking error %s", TC[i].edesc); |
| continue; |
| } |
| |
| TEST(mlockall(TC[i].flag)); |
| |
| /* check return code */ |
| if (TEST_RETURN == -1) { |
| TEST_ERROR_LOG(TEST_ERRNO); |
| if (TEST_ERRNO != TC[i].error) |
| tst_brkm(TFAIL, cleanup, |
| "mlockall() Failed with wrong " |
| "errno, expected errno=%s, " |
| "got errno=%d : %s", |
| TC[i].edesc, TEST_ERRNO, |
| strerror(TEST_ERRNO)); |
| else |
| tst_resm(TPASS, |
| "expected failure - errno " |
| "= %d : %s", |
| TEST_ERRNO, |
| strerror(TEST_ERRNO)); |
| } else { |
| tst_brkm(TFAIL, cleanup, |
| "mlockall() Failed, expected " |
| "return value=-1, got %ld", |
| TEST_RETURN); |
| } |
| cleanup_test(i); |
| } |
| } |
| |
| /* cleanup and exit */ |
| cleanup(); |
| |
| tst_exit(); |
| } |
| |
| /* |
| * setup() - performs all ONE TIME setup for this test. |
| */ |
| void setup(void) |
| { |
| |
| tst_sig(FORK, DEF_HANDLER, cleanup); |
| |
| /* set the expected errnos... */ |
| TEST_EXP_ENOS(exp_enos); |
| |
| TEST_PAUSE; |
| |
| return; |
| } |
| |
| int compare(char s1[], char s2[]) |
| { |
| int i = 0; |
| while (s1[i] == s2[i] && s1[i]) |
| i++; |
| |
| if (i < 4) |
| return s2[i] - s1[i]; |
| if ((i == 4) && (isalnum(s2[i + 1]))) { |
| return 1; |
| } else { |
| /* it is not an alphanumeric character */ |
| return s2[i] - s1[i]; |
| } |
| return 0; |
| } |
| |
| int setup_test(int i) |
| { |
| struct rlimit rl; |
| char nobody_uid[] = "nobody"; |
| struct passwd *ltpuser; |
| |
| switch (i) { |
| case 0: |
| 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)); |
| return 1; |
| } |
| |
| rl.rlim_max = 10; |
| rl.rlim_cur = 7; |
| |
| if (setrlimit(RLIMIT_MEMLOCK, &rl) != 0) { |
| tst_resm(TWARN, "setrlimit failed to set the " |
| "resource for RLIMIT_MEMLOCK to check " |
| "for mlockall() error %s\n", TC[i].edesc); |
| return 1; |
| } |
| return 0; |
| case 1: |
| rl.rlim_max = 0; |
| rl.rlim_cur = 0; |
| |
| if (setrlimit(RLIMIT_MEMLOCK, &rl) != 0) { |
| tst_resm(TWARN, "setrlimit failed to set the " |
| "resource for RLIMIT_MEMLOCK to check " |
| "for mlockall() error %s\n", TC[i].edesc); |
| return 1; |
| } |
| |
| 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)); |
| return 1; |
| } |
| |
| return 0; |
| } |
| return 0; |
| } |
| |
| void cleanup_test(int i) |
| { |
| struct rlimit rl; |
| |
| switch (i) { |
| case 0: |
| if (seteuid(0) == -1) { |
| tst_brkm(TBROK, cleanup, "seteuid() failed to " |
| "change euid to %d errno = %d : %s", |
| 0, TEST_ERRNO, strerror(TEST_ERRNO)); |
| } |
| |
| rl.rlim_max = -1; |
| rl.rlim_cur = -1; |
| |
| if (setrlimit(RLIMIT_MEMLOCK, &rl) != 0) { |
| tst_brkm(TFAIL, cleanup, |
| "setrlimit failed to reset the " |
| "resource for RLIMIT_MEMLOCK while " |
| "checking for mlockall() error %s\n", |
| TC[i].edesc); |
| } |
| |
| return; |
| |
| case 1: |
| if (seteuid(0) == -1) { |
| tst_brkm(TBROK, cleanup, "seteuid() failed to " |
| "change euid to %d errno = %d : %s", |
| 0, TEST_ERRNO, strerror(TEST_ERRNO)); |
| } |
| return; |
| |
| } |
| } |
| |
| #else |
| |
| int main(void) |
| { |
| tst_resm(TINFO, "test is not available on uClinux"); |
| tst_exit(); |
| } |
| |
| #endif /* if !defined(UCLINUX) */ |
| |
| /* |
| * cleanup() - performs all ONE TIME cleanup for this test at |
| * completion or premature exit. |
| */ |
| void cleanup(void) |
| { |
| TEST_CLEANUP; |
| |
| return; |
| } |