44 lines
877 B
C
44 lines
877 B
C
/*
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* Copyright (c) 2014-2016 Dmitry V. Levin <ldv@altlinux.org>
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* Copyright (c) 2014-2018 The strace developers.
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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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#if defined(HAVE_PREADV) && defined(HAVE_PWRITEV)
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# include <fcntl.h>
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# include <unistd.h>
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# include <sys/uio.h>
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# include <assert.h>
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int
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main(void)
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{
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const off_t offset = 0xdefaceddeadbeefLL;
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char buf[4];
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struct iovec iov = { buf, sizeof(buf) };
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(void) close(0);
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assert(open("/dev/zero", O_RDONLY) == 0);
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assert(pread(0, buf, sizeof(buf), offset) == 4);
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assert(preadv(0, &iov, 1, offset) == 4);
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assert(!close(0));
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assert(open("/dev/null", O_WRONLY) == 0);
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assert(pwrite(0, buf, sizeof(buf), offset) == 4);
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assert(pwritev(0, &iov, 1, offset) == 4);
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assert(!close(0));
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return 0;
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}
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#else
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SKIP_MAIN_UNDEFINED("HAVE_PREADV && HAVE_PWRITEV")
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#endif
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