diff options
Diffstat (limited to 'testcases/kernel/syscalls/mlock/mlock02.c')
| -rw-r--r-- | testcases/kernel/syscalls/mlock/mlock02.c | 190 |
1 files changed, 51 insertions, 139 deletions
diff --git a/testcases/kernel/syscalls/mlock/mlock02.c b/testcases/kernel/syscalls/mlock/mlock02.c index 50ee31d1c..921ddeeae 100644 --- a/testcases/kernel/syscalls/mlock/mlock02.c +++ b/testcases/kernel/syscalls/mlock/mlock02.c @@ -1,109 +1,46 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* - * Copyright (c) International Business Machines Corp., 2002 - * 06/2002 Written by Paul Larson + * Copyright (c) International Business Machines Corp., 2002 * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See - * the GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * 06/2002 Written by Paul Larson */ -/* - * Test Description: - * Verify that, - * 1. mlock() fails with -1 return value and sets errno to ENOMEM, - * if some of the specified address range does not correspond to - * mapped pages in the address space of the process. - * 2. mlock() fails with -1 return value and sets errno to ENOMEM, - * if (Linux 2.6.9 and later) the caller had a non-zero RLIMIT_MEMLOCK - * soft resource limit, but tried to lock more memory than the limit - * permitted. This limit is not enforced if the process is privileged - * (CAP_IPC_LOCK). - * 3. mlock() fails with -1 return value and sets errno to EPERM, - * if (Linux 2.6.9 and later) the caller was not privileged (CAP_IPC_LOCK) - * and its RLIMIT_MEMLOCK soft resource limit was 0. +/*\ + * [Description] + * + * Test for ENOMEM, EPERM errors. + * + * 1) mlock(2) fails with ENOMEM if some of the specified address range + * does not correspond to mapped pages in the address space of + * the process. + * + * 2) mlock(2) fails with ENOMEM if the caller had a non-zero RLIMIT_MEMLOCK + * soft resource limit, but tried to lock more memory than the limit + * permitted. This limit is not enforced if the process is + * privileged (CAP_IPC_LOCK). + * + * 3) mlock(2) fails with EPERM if the caller was not privileged (CAP_IPC_LOCK) + * and its RLIMIT_MEMLOCK soft resource limit was 0. */ -#include <errno.h> #include <unistd.h> #include <sys/mman.h> +#include <sys/types.h> #include <pwd.h> - -#include "test.h" -#include "safe_macros.h" - -char *TCID = "mlock02"; - -#if !defined(UCLINUX) - -static void setup(void); -static void cleanup(void); -static void test_enomem1(void); -static void test_enomem2(void); -static void test_eperm(void); -static void mlock_verify(const void *, const size_t, const int); +#include "tst_test.h" static size_t len; static struct rlimit original; static struct passwd *ltpuser; -static void (*test_func[])(void) = { test_enomem1, test_enomem2, test_eperm }; - -int TST_TOTAL = ARRAY_SIZE(test_func); - -int main(int ac, char **av) -{ - int lc, i; - - tst_parse_opts(ac, av, NULL, NULL); - - setup(); - - for (lc = 0; TEST_LOOPING(lc); lc++) { - tst_count = 0; - for (i = 0; i < TST_TOTAL; i++) - (*test_func[i])(); - } - - cleanup(); - tst_exit(); -} - -static void setup(void) -{ - tst_require_root(); - - tst_sig(NOFORK, DEF_HANDLER, cleanup); - - TEST_PAUSE; - - ltpuser = SAFE_GETPWNAM(cleanup, "nobody"); - - len = getpagesize(); - - SAFE_GETRLIMIT(cleanup, RLIMIT_MEMLOCK, &original); -} - static void test_enomem1(void) { void *addr; - struct rlimit rl; - addr = SAFE_MMAP(cleanup, NULL, len, PROT_READ, + addr = SAFE_MMAP(NULL, len, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); - - SAFE_MUNMAP(cleanup, addr, len); - - mlock_verify(addr, len, ENOMEM); + SAFE_MUNMAP(addr, len); + TST_EXP_FAIL(mlock(addr, len), ENOMEM, "mlock(%p, %lu)", addr, len); } static void test_enomem2(void) @@ -113,20 +50,14 @@ static void test_enomem2(void) rl.rlim_max = len - 1; rl.rlim_cur = len - 1; - SAFE_SETRLIMIT(cleanup, RLIMIT_MEMLOCK, &rl); - - addr = SAFE_MMAP(cleanup, NULL, len, PROT_READ, + SAFE_SETRLIMIT(RLIMIT_MEMLOCK, &rl); + addr = SAFE_MMAP(NULL, len, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); - - SAFE_SETEUID(cleanup, ltpuser->pw_uid); - - mlock_verify(addr, len, ENOMEM); - - SAFE_SETEUID(cleanup, 0); - - SAFE_MUNMAP(cleanup, addr, len); - - SAFE_SETRLIMIT(cleanup, RLIMIT_MEMLOCK, &original); + SAFE_SETEUID(ltpuser->pw_uid); + TST_EXP_FAIL(mlock(addr, len), ENOMEM, "mlock(%p, %lu)", addr, len); + SAFE_SETEUID(0); + SAFE_MUNMAP(addr, len); + SAFE_SETRLIMIT(RLIMIT_MEMLOCK, &original); } static void test_eperm(void) @@ -136,51 +67,32 @@ static void test_eperm(void) rl.rlim_max = 0; rl.rlim_cur = 0; - SAFE_SETRLIMIT(cleanup, RLIMIT_MEMLOCK, &rl); - - addr = SAFE_MMAP(cleanup, NULL, len, PROT_READ, + SAFE_SETRLIMIT(RLIMIT_MEMLOCK, &rl); + addr = SAFE_MMAP(NULL, len, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, 0, 0); - - SAFE_SETEUID(cleanup, ltpuser->pw_uid); - - mlock_verify(addr, len, EPERM); - - SAFE_SETEUID(cleanup, 0); - - SAFE_MUNMAP(cleanup, addr, len); - - SAFE_SETRLIMIT(cleanup, RLIMIT_MEMLOCK, &original); + SAFE_SETEUID(ltpuser->pw_uid); + TST_EXP_FAIL(mlock(addr, len), EPERM, "mlock(%p, %lu)", addr, len); + SAFE_SETEUID(0); + SAFE_MUNMAP(addr, len); + SAFE_SETRLIMIT(RLIMIT_MEMLOCK, &original); } -static void mlock_verify(const void *addr, const size_t len, const int error) +static void run(void) { - TEST(mlock(addr, len)); - - if (TEST_RETURN != -1) { - tst_resm(TFAIL, "mlock succeeded unexpectedly"); - return; - } - - if (TEST_ERRNO != error) { - tst_resm(TFAIL | TTERRNO, - "mlock didn't fail as expected; expected - %d : %s", - error, strerror(error)); - } else { - tst_resm(TPASS | TTERRNO, "mlock failed as expected"); - } + test_enomem1(); + test_enomem2(); + test_eperm(); } -static void cleanup(void) -{ -} - -#else - -int TST_TOTAL = 1; - -int main(void) +static void setup(void) { - tst_brkm(TCONF, NULL, "test is not available on uClinux"); + ltpuser = SAFE_GETPWNAM("nobody"); + len = getpagesize(); + SAFE_GETRLIMIT(RLIMIT_MEMLOCK, &original); } -#endif /* if !defined(UCLINUX) */ +static struct tst_test test = { + .needs_root = 1, + .setup = setup, + .test_all = run, +}; |