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108 lines
3.5 KiB
108 lines
3.5 KiB
/* |
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* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org> |
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* Copyright (c) 2015-2017 The strace developers. |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. The name of the author may not be used to endorse or promote products |
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* derived from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include <stdio.h> |
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#include <stdint.h> |
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#include <stdlib.h> |
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#include <unistd.h> |
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#include "flock.h" |
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#define FILE_LEN 4096 |
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#define TEST_FLOCK_EINVAL(cmd) test_flock_einval(cmd, #cmd) |
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#ifdef HAVE_TYPEOF |
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# define TYPEOF_FLOCK_OFF_T typeof(((struct_kernel_flock *) NULL)->l_len) |
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#else |
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# define TYPEOF_FLOCK_OFF_T off_t |
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#endif |
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static long |
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invoke_test_syscall(const unsigned int cmd, void *const p) |
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{ |
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const kernel_ulong_t fd = F8ILL_KULONG_MASK; |
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const kernel_ulong_t op = F8ILL_KULONG_MASK | cmd; |
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return syscall(TEST_SYSCALL_NR, fd, op, (unsigned long) p); |
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} |
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static void |
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test_flock_einval(const int cmd, const char *name) |
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{ |
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struct_kernel_flock fl = { |
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.l_type = F_RDLCK, |
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.l_start = (TYPEOF_FLOCK_OFF_T) 0xdefaced1facefeedULL, |
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.l_len = (TYPEOF_FLOCK_OFF_T) 0xdefaced2cafef00dULL |
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}; |
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long rc = invoke_test_syscall(cmd, &fl); |
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printf("%s(0, %s, {l_type=F_RDLCK, l_whence=SEEK_SET" |
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", l_start=%jd, l_len=%jd}) = %s\n", TEST_SYSCALL_STR, name, |
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(intmax_t) fl.l_start, (intmax_t) fl.l_len, sprintrc(rc)); |
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} |
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static void |
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test_flock(void) |
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{ |
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TEST_FLOCK_EINVAL(F_SETLK); |
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TEST_FLOCK_EINVAL(F_SETLKW); |
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struct_kernel_flock fl = { |
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.l_type = F_RDLCK, |
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.l_len = FILE_LEN |
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}; |
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long rc = invoke_test_syscall(F_SETLK, &fl); |
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printf("%s(0, F_SETLK, {l_type=F_RDLCK, l_whence=SEEK_SET" |
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", l_start=0, l_len=%d}) = %s\n", |
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TEST_SYSCALL_STR, FILE_LEN, sprintrc(rc)); |
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if (rc) |
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return; |
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invoke_test_syscall(F_GETLK, &fl); |
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printf("%s(0, F_GETLK, {l_type=F_UNLCK, l_whence=SEEK_SET" |
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", l_start=0, l_len=%d, l_pid=0}) = 0\n", |
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TEST_SYSCALL_STR, FILE_LEN); |
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invoke_test_syscall(F_SETLK, &fl); |
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printf("%s(0, F_SETLK, {l_type=F_UNLCK, l_whence=SEEK_SET" |
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", l_start=0, l_len=%d}) = 0\n", |
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TEST_SYSCALL_STR, FILE_LEN); |
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} |
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static void |
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create_sample(void) |
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{ |
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char fname[] = TEST_SYSCALL_STR "_XXXXXX"; |
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(void) close(0); |
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if (mkstemp(fname)) |
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perror_msg_and_fail("mkstemp: %s", fname); |
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if (unlink(fname)) |
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perror_msg_and_fail("unlink: %s", fname); |
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if (ftruncate(0, FILE_LEN)) |
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perror_msg_and_fail("ftruncate"); |
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}
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