| /* |
| * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org> |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. The name of the author may not be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include <stdio.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| #include "flock.h" |
| |
| #define FILE_LEN 4096 |
| #define EINVAL_STR "-1 EINVAL (Invalid argument)" |
| |
| #define TEST_FLOCK_EINVAL(cmd) test_flock_einval(cmd, #cmd) |
| |
| #ifdef HAVE_TYPEOF |
| # define TYPEOF_FLOCK_OFF_T typeof(((struct_kernel_flock *) NULL)->l_len) |
| #else |
| # define TYPEOF_FLOCK_OFF_T off_t |
| #endif |
| |
| static long |
| invoke_test_syscall(const unsigned int cmd, void *const p) |
| { |
| const unsigned long op = (unsigned long) 0xffffffff00000000 | cmd; |
| |
| return syscall(TEST_SYSCALL_NR, 0, op, (unsigned long) p); |
| } |
| |
| static void |
| test_flock_einval(const int cmd, const char *name) |
| { |
| struct_kernel_flock fl = { |
| .l_type = F_RDLCK, |
| .l_start = (TYPEOF_FLOCK_OFF_T) 0xdefaced1facefeed, |
| .l_len = (TYPEOF_FLOCK_OFF_T) 0xdefaced2cafef00d |
| }; |
| invoke_test_syscall(cmd, &fl); |
| printf("%s(0, %s, {l_type=F_RDLCK, l_whence=SEEK_SET" |
| ", l_start=%jd, l_len=%jd}) = %s\n", TEST_SYSCALL_STR, name, |
| (intmax_t) fl.l_start, (intmax_t) fl.l_len, EINVAL_STR); |
| } |
| |
| static void |
| test_flock(void) |
| { |
| TEST_FLOCK_EINVAL(F_SETLK); |
| TEST_FLOCK_EINVAL(F_SETLKW); |
| |
| struct_kernel_flock fl = { |
| .l_type = F_RDLCK, |
| .l_len = FILE_LEN |
| }; |
| long rc = invoke_test_syscall(F_SETLK, &fl); |
| printf("%s(0, F_SETLK, {l_type=F_RDLCK, l_whence=SEEK_SET" |
| ", l_start=0, l_len=%d}) = %s\n", |
| TEST_SYSCALL_STR, FILE_LEN, rc ? EINVAL_STR : "0"); |
| if (rc) |
| return; |
| |
| invoke_test_syscall(F_GETLK, &fl); |
| printf("%s(0, F_GETLK, {l_type=F_UNLCK, l_whence=SEEK_SET" |
| ", l_start=0, l_len=%d, l_pid=0}) = 0\n", |
| TEST_SYSCALL_STR, FILE_LEN); |
| |
| invoke_test_syscall(F_SETLK, &fl); |
| printf("%s(0, F_SETLK, {l_type=F_UNLCK, l_whence=SEEK_SET" |
| ", l_start=0, l_len=%d}) = 0\n", |
| TEST_SYSCALL_STR, FILE_LEN); |
| } |
| |
| static void |
| create_sample(void) |
| { |
| char fname[] = TEST_SYSCALL_STR "_XXXXXX"; |
| |
| (void) close(0); |
| if (mkstemp(fname)) |
| perror_msg_and_fail("mkstemp: %s", fname); |
| if (unlink(fname)) |
| perror_msg_and_fail("unlink: %s", fname); |
| if (ftruncate(0, FILE_LEN)) |
| perror_msg_and_fail("ftruncate"); |
| } |