Dmitry V. Levin
f4d6a0d4e1
* tests/uio.c (main): Use descriptor number 0 in pread/pwrite and preadv/pwritev syscalls. * tests/uio.expected: Update regexps. Reported-by: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
33 lines
664 B
C
33 lines
664 B
C
#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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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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#if defined(HAVE_PREADV) && defined(HAVE_PWRITEV)
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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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#else
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return 77;
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#endif
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}
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