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45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* Copyright (C) 1991-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <unistd.h>
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/* Read NBYTES into BUF from FD at the given position OFFSET without
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changing the file pointer. Return the number read or -1. */
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ssize_t
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__libc_pread (int fd, void *buf, size_t nbytes, off_t offset)
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{
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if (nbytes == 0)
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return 0;
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if (fd < 0)
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{
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__set_errno (EBADF);
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return -1;
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}
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if (buf == NULL || offset < 0)
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{
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__set_errno (EINVAL);
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return -1;
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}
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__set_errno (ENOSYS);
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return -1;
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}
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strong_alias (__libc_pread, __pread)
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weak_alias (__libc_pread, pread)
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stub_warning (pread)
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