44 lines
914 B
C
44 lines
914 B
C
/*
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* Copyright (c) 2015-2018 Dmitry V. Levin <ldv@altlinux.org>
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* All rights reserved.
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "tests.h"
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#include <asm/unistd.h>
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#ifdef __NR_lseek
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# include <stdio.h>
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# include <unistd.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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/*
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* Cannot use syscall because it takes long arguments.
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* Let's call lseek with hope it will invoke lseek syscall.
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*/
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long long rc = lseek(-1, offset, SEEK_SET);
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printf("lseek(-1, %lld, SEEK_SET) = %lld %s (%m)\n",
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(long long) offset, rc, errno2name());
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} else {
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long rc = syscall(__NR_lseek, -1L, offset, SEEK_SET);
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printf("lseek(-1, %ld, SEEK_SET) = %ld %s (%m)\n",
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(long) offset, rc, errno2name());
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}
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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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