strace/tests/lseek.c
Dmitry V. Levin fa5e5d9854 tests: do not include <assert.h> unnecessarily
Automatically change tests/*.c files using the following script:

for f in tests/*.c; do
	grep -q '\<assert(' "$f" ||
		sed -i '/# *include *<assert\.h>/d' "$f"
done
2016-04-21 22:05:57 +00:00

65 lines
2.2 KiB
C

/*
* 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 "tests.h"
#include <sys/syscall.h>
#ifdef __NR_lseek
# include <stdio.h>
# include <unistd.h>
# include "kernel_types.h"
int
main(void)
{
const kernel_ulong_t offset = (kernel_ulong_t) 0xfacefeeddeadbeefULL;
if (sizeof(offset) > sizeof(long)) {
/*
* Cannot use syscall because it takes long arguments.
* Let's call lseek with hope it will invoke lseek syscall.
*/
long long rc = lseek(-1, offset, SEEK_SET);
printf("lseek(-1, %lld, SEEK_SET) = %lld %s (%m)\n",
(long long) offset, rc, errno2name());
} else {
long rc = syscall(__NR_lseek, -1L, offset, SEEK_SET);
printf("lseek(-1, %ld, SEEK_SET) = %ld %s (%m)\n",
(long) offset, rc, errno2name());
}
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_lseek")
#endif