| /* Copyright (C) 2011-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. |
| Based on work contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. |
| |
| 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 <assert.h> |
| #include <errno.h> |
| #include <endian.h> |
| #include <unistd.h> |
| #include <sys/uio.h> |
| |
| #include <sysdep-cancel.h> |
| #include <sys/syscall.h> |
| |
| #include <kernel-features.h> |
| |
| static ssize_t |
| do_preadv (int fd, const struct iovec *vector, int count, off_t offset) |
| { |
| assert (sizeof (offset) == 4); |
| return INLINE_SYSCALL (preadv, __ALIGNMENT_COUNT (5, 6), fd, |
| vector, count, __ALIGNMENT_ARG |
| __LONG_LONG_PAIR (offset >> 31, offset)); |
| } |
| |
| ssize_t |
| __libc_preadv (int fd, const struct iovec *vector, int count, off_t offset) |
| { |
| if (SINGLE_THREAD_P) |
| return do_preadv (fd, vector, count, offset); |
| |
| int oldtype = LIBC_CANCEL_ASYNC (); |
| |
| ssize_t result = do_preadv (fd, vector, count, offset); |
| |
| LIBC_CANCEL_RESET (oldtype); |
| |
| return result; |
| } |
| strong_alias (__libc_preadv, __preadv) |
| weak_alias (__libc_preadv, preadv) |
