glibc/sysdeps/posix/pwritev64v2.c
Florian Weimer d4b4a00a46 preadv2/pwritev2: Handle offset == -1 [BZ #22753]
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
2018-02-02 10:46:26 +01:00

43 lines
1.3 KiB
C

/* Generic version of pwritev2.
Copyright (C) 2017-2018 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
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <unistd.h>
#include <sys/uio.h>
/* Since we define no flags for pwritev2 just route to pwritev. */
ssize_t
pwritev64v2 (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 __writev (fd, vector, count);
else
return pwritev64 (fd, vector, count, offset);
}
#ifdef __OFF_T_MATCHES_OFF64_T
strong_alias (pwritev64v2, pwritev2)
#endif