| /* 64-bit pwritev. |
| Copyright (C) 2012-2014 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 <stddef.h> |
| #include <sys/param.h> |
| /* Hide the pwritev64 declaration. */ |
| #define pwritev64 __redirect_pwritev64 |
| #include <sys/uio.h> |
| |
| #include <sysdep-cancel.h> |
| #include <sys/syscall.h> |
| #include <kernel-features.h> |
| |
| #ifndef __ASSUME_PWRITEV |
| static ssize_t __atomic_pwritev_replacement (int, const struct iovec *, |
| int, off_t) internal_function; |
| #endif |
| |
| ssize_t |
| pwritev (int fd, const struct iovec *vector, int count, off_t offset) |
| { |
| #ifdef __NR_pwritev |
| ssize_t result; |
| |
| if (SINGLE_THREAD_P) |
| result = INLINE_SYSCALL (pwritev, 4, fd, vector, count, offset); |
| else |
| { |
| int oldtype = LIBC_CANCEL_ASYNC (); |
| |
| result = INLINE_SYSCALL (pwritev, 4, fd, vector, count, offset); |
| |
| LIBC_CANCEL_RESET (oldtype); |
| } |
| # ifdef __ASSUME_PWRITEV |
| return result; |
| # endif |
| #endif |
| |
| #ifndef __ASSUME_PWRITEV |
| # ifdef __NR_pwritev |
| if (result >= 0 || errno != ENOSYS) |
| return result; |
| # endif |
| |
| return __atomic_pwritev_replacement (fd, vector, count, offset); |
| #endif |
| } |
| #undef pwritev64 |
| strong_alias (pwritev, pwritev64) |
| |
| #ifndef __ASSUME_PWRITEV |
| # define PWRITE __pwrite |
| # define PWRITEV static internal_function __atomic_pwritev_replacement |
| # define OFF_T off_t |
| # include <sysdeps/posix/pwritev.c> |
| #endif |
