projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| b168057a | 1 | /* Copyright (C) 1997-2015 Free Software Foundation, Inc. |
| de96d148 DJ |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. | |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| de96d148 DJ |
18 | |
| 19 | #include <errno.h> | |
| 20 | #include <endian.h> | |
| 21 | #include <unistd.h> | |
| 22 | ||
| 23 | #include <sysdep-cancel.h> | |
| 24 | #include <sys/syscall.h> | |
| de96d148 DJ |
25 | |
| 26 | ssize_t | |
| 27 | __libc_pread (fd, buf, count, offset) | |
| 28 | int fd; | |
| 29 | void *buf; | |
| 30 | size_t count; | |
| 31 | off_t offset; | |
| 32 | { | |
| 33 | ssize_t result; | |
| 34 | ||
| 35 | if (SINGLE_THREAD_P) | |
| 36 | { | |
| 37 | /* In the ARM EABI, 64-bit values are aligned to even/odd register | |
| 38 | pairs for syscalls. */ | |
| a2da1673 | 39 | result = INLINE_SYSCALL (pread64, 6, fd, buf, count, 0, |
| de96d148 DJ |
40 | __LONG_LONG_PAIR (offset >> 31, offset)); |
| 41 | ||
| 42 | return result; | |
| 43 | } | |
| 44 | ||
| 45 | int oldtype = LIBC_CANCEL_ASYNC (); | |
| 46 | ||
| 47 | /* In the ARM EABI, 64-bit values are aligned to even/odd register | |
| 48 | pairs for syscalls. */ | |
| a2da1673 | 49 | result = INLINE_SYSCALL (pread64, 6, fd, buf, count, 0, |
| de96d148 DJ |
50 | __LONG_LONG_PAIR (offset >> 31, offset)); |
| 51 | ||
| 52 | LIBC_CANCEL_RESET (oldtype); | |
| 53 | ||
| 54 | return result; | |
| 55 | } | |
| 56 | ||
| 57 | strong_alias (__libc_pread, __pread) | |
| 58 | weak_alias (__libc_pread, pread) |