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/* Generic version of preadv2.
Copyright (C) 2017-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <errno.h>
#include <unistd.h>
#include <sys/uio.h>
#ifndef __OFF_T_MATCHES_OFF64_T
/* Since we define no flags for preadv2 just route to preadv. */
ssize_t
preadv2 (int fd, const struct iovec *vector, int count, off_t offset,
int flags)
{
if (flags != 0)
{
__set_errno (ENOTSUP);
return -1;
}
if (offset == -1)
return __readv (fd, vector, count);
else
return preadv (fd, vector, count, offset);
}
#endif
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