glibc/sysdeps/posix/preadv64v2.c

42 lines
1.2 KiB
C

/* Generic version of preadv2.
Copyright (C) 2017-2023 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>
ssize_t
preadv64v2 (int fd, const struct iovec *vector, int count, off64_t offset,
int flags)
{
if (flags != 0)
{
__set_errno (ENOTSUP);
return -1;
}
if (offset == -1)
return __readv (fd, vector, count);
else
return preadv64 (fd, vector, count, offset);
}
#ifdef __OFF_T_MATCHES_OFF64_T
strong_alias (preadv64v2, preadv2)
#endif