Dmitry V. Levin
cc1e149be9
* tests/struct_flock.c: New file. * tests/struct_flock.test: New test. * tests/Makefile.am (check_PROGRAMS): Add struct_flock. (TESTS): Add struct_flock.test. * tests/.gitignore: Add struct_flock.
140 lines
4.2 KiB
C
140 lines
4.2 KiB
C
/*
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* Copyright (c) 2015 Dmitry V. Levin <ldv@altlinux.org>
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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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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <assert.h>
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#include <errno.h>
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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 <sys/syscall.h>
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#include "flock.h"
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#define FILE_LEN 4096
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static void
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test_flock(int nr, 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 = (off_t) 0xdefaced1facefeed,
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.l_len = (off_t) 0xdefaced2cafef00d
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};
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int rc;
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syscall(nr, -1, F_SETLK, &fl);
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printf("%s(-1, F_SETLK, {l_type=F_RDLCK, l_whence=SEEK_SET"
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", l_start=%jd, l_len=%jd}) = -1 %s\n",
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name, (intmax_t) fl.l_start, (intmax_t) fl.l_len,
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errno == EBADF ? "EBADF (Bad file descriptor)" :
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"EINVAL (Invalid argument)");
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fl.l_start = 0;
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fl.l_len = FILE_LEN;
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rc = syscall(nr, 0, 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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name, FILE_LEN, rc ? "-1 EINVAL (Invalid argument)" : "0");
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if (rc)
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return;
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syscall(nr, 0, 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", name, FILE_LEN);
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syscall(nr, 0, 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", name, FILE_LEN);
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}
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static void
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test_flock64(int nr, const char *name)
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{
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struct_kernel_flock64 fl = {
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.l_type = F_RDLCK,
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.l_start = 0xdefaced1facefeed,
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.l_len = 0xdefaced2cafef00d
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};
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int rc;
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syscall(nr, -1, F_SETLK64, &fl);
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printf("%s(-1, F_SETLK64, {l_type=F_RDLCK, l_whence=SEEK_SET"
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", l_start=%jd, l_len=%jd}) = -1 %s\n",
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name, (intmax_t) fl.l_start, (intmax_t) fl.l_len,
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errno == EBADF ? "EBADF (Bad file descriptor)" :
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"EINVAL (Invalid argument)");
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fl.l_start = 0;
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fl.l_len = FILE_LEN;
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rc = syscall(nr, 0, F_SETLK64, &fl);
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printf("%s(0, F_SETLK64, {l_type=F_RDLCK, l_whence=SEEK_SET"
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", l_start=0, l_len=%d}) = %s\n",
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name, FILE_LEN, rc ? "-1 EINVAL (Invalid argument)" : "0");
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if (rc)
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return;
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syscall(nr, 0, F_GETLK64, &fl);
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printf("%s(0, F_GETLK64, {l_type=F_UNLCK, l_whence=SEEK_SET"
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", l_start=0, l_len=%d, l_pid=0}) = 0\n", name, FILE_LEN);
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syscall(nr, 0, F_SETLK64, &fl);
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printf("%s(0, F_SETLK64, {l_type=F_UNLCK, l_whence=SEEK_SET"
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", l_start=0, l_len=%d}) = 0\n", name, FILE_LEN);
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}
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int
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main(void)
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{
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char fname[] = "struct_flock_XXXXXX";
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(void) close(0);
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assert(mkstemp(fname) == 0);
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assert(unlink(fname) == 0);
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assert(ftruncate(0, FILE_LEN) == 0);
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#ifdef __NR_fcntl
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test_flock(__NR_fcntl, "fcntl");
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test_flock64(__NR_fcntl, "fcntl");
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#endif
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#ifdef __NR_fcntl64
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test_flock(__NR_fcntl64, "fcntl64");
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test_flock64(__NR_fcntl64, "fcntl64");
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#endif
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puts("+++ exited with 0 +++");
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return 0;
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}
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