projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| e109c612 UD |
1 | /* Copyright (C) 2009 Free Software Foundation, Inc. |
| 2 | This file is part of the GNU C Library. | |
| 3 | ||
| 4 | The GNU C Library is free software; you can redistribute it and/or | |
| 5 | modify it under the terms of the GNU Lesser General Public | |
| 6 | License as published by the Free Software Foundation; either | |
| 7 | version 2.1 of the License, or (at your option) any later version. | |
| 8 | ||
| 9 | The GNU C Library is distributed in the hope that it will be useful, | |
| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 | Lesser General Public License for more details. | |
| 13 | ||
| 14 | You should have received a copy of the GNU Lesser General Public | |
| 15 | License along with the GNU C Library; if not, write to the Free | |
| 16 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
| 17 | 02111-1307 USA. */ | |
| 18 | ||
| 19 | #include <errno.h> | |
| 20 | #include <stddef.h> | |
| 21 | #include <sys/param.h> | |
| 22 | #if __WORDSIZE == 64 && !defined PWRITEV | |
| 23 | /* Hide the pwritev64 declaration. */ | |
| 24 | # define pwritev64 __redirect_pwritev64 | |
| 25 | #endif | |
| 26 | #include <sys/uio.h> | |
| 27 | ||
| 28 | #include <sysdep-cancel.h> | |
| 29 | #include <sys/syscall.h> | |
| 30 | #include <kernel-features.h> | |
| 31 | ||
| 32 | #ifndef PWRITEV | |
| 33 | # define PWRITEV pwritev | |
| 34 | # define PWRITEV_REPLACEMENT __atomic_pwritev_replacement | |
| 35 | # define PWRITE __pwrite | |
| 36 | # define OFF_T off_t | |
| 37 | #endif | |
| 38 | ||
| f9fe75e9 | 39 | #ifndef __ASSUME_PWRITEV |
| e109c612 UD |
40 | static ssize_t PWRITEV_REPLACEMENT (int, __const struct iovec *, |
| 41 | int, OFF_T) internal_function; | |
| f9fe75e9 | 42 | #endif |
| e109c612 UD |
43 | |
| 44 | ||
| 45 | ssize_t | |
| 46 | PWRITEV (fd, vector, count, offset) | |
| 47 | int fd; | |
| 48 | const struct iovec *vector; | |
| 49 | int count; | |
| 50 | OFF_T offset; | |
| 51 | { | |
| 52 | #ifdef __NR_pwritev | |
| 53 | ssize_t result; | |
| 54 | ||
| 55 | if (SINGLE_THREAD_P) | |
| 56 | result = INLINE_SYSCALL (pwritev, 5, fd, vector, count, offset >> 32, | |
| 57 | offset & 0xffffffff); | |
| 58 | else | |
| 59 | { | |
| 60 | int oldtype = LIBC_CANCEL_ASYNC (); | |
| 61 | ||
| 62 | result = INLINE_SYSCALL (pwritev, 5, fd, vector, count, offset >> 32, | |
| 63 | offset & 0xffffffff); | |
| 64 | ||
| 65 | LIBC_CANCEL_RESET (oldtype); | |
| 66 | } | |
| 67 | # ifdef __ASSUME_PWRITEV | |
| 68 | return result; | |
| 69 | # endif | |
| 70 | #endif | |
| 71 | ||
| 72 | #ifndef __ASSUME_PWRITEV | |
| 73 | # ifdef __NR_pwritev | |
| 74 | if (result >= 0 || errno != ENOSYS) | |
| 75 | return result; | |
| 76 | # endif | |
| 77 | ||
| 78 | return PWRITEV_REPLACEMENT (fd, vector, count, offset); | |
| 79 | #endif | |
| 80 | } | |
| 81 | #if __WORDSIZE == 64 && defined pwritev64 | |
| 82 | # undef pwritev64 | |
| 83 | strong_alias (pwritev, pwritev64) | |
| 84 | #endif | |
| 85 | ||
| 86 | #ifndef __ASSUME_PWRITEV | |
| 87 | # undef PWRITEV | |
| 88 | # define PWRITEV static internal_function PWRITEV_REPLACEMENT | |
| 89 | # include <sysdeps/posix/pwritev.c> | |
| 90 | #endif |