Dmitry V. Levin
ddbede5d9c
* lseek.c (SYS_FUNC(lseek)): Print offset using %lld format. (SYS_FUNC(llseek)): Likewise. Treat high and low components of offset as unsigned long integers. * tests/llseek.c (main): Check that negative offset is printed properly. * tests/lseek.c (main): Likewise.
68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
/*
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* Copyright (c) 2015-2016 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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#include "tests.h"
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#include <sys/syscall.h>
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#ifdef __NR_lseek
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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 <unistd.h>
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# include "kernel_types.h"
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int
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main(void)
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{
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const kernel_ulong_t offset = (kernel_ulong_t) 0xfacefeeddeadbeefULL;
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if (sizeof(offset) > sizeof(long))
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assert(lseek(-1, offset, SEEK_SET) == -1);
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else
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assert(syscall(__NR_lseek, -1L, offset, SEEK_SET) == -1);
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if (EBADF != errno)
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perror_msg_and_skip("lseek");
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if (sizeof(offset) > sizeof(long))
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printf("lseek(-1, %lld, SEEK_SET) = -1 EBADF (%m)\n",
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(long long) offset);
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else
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printf("lseek(-1, %ld, SEEK_SET) = -1 EBADF (%m)\n",
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(long) offset);
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puts("+++ exited with 0 +++");
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return 0;
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}
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#else
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SKIP_MAIN_UNDEFINED("__NR_lseek")
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#endif
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