projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| de96d148 DJ |
1 | /* Copyright (C) 1997, 1998, 1999, 2000, 2002, 2003, 2005 |
| 2 | Free Software Foundation, Inc. | |
| 3 | This file is part of the GNU C Library. | |
| 4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. | |
| 5 | ||
| 6 | The GNU C Library is free software; you can redistribute it and/or | |
| 7 | modify it under the terms of the GNU Lesser General Public | |
| 8 | License as published by the Free Software Foundation; either | |
| 9 | version 2.1 of the License, or (at your option) any later version. | |
| 10 | ||
| 11 | The GNU C Library is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 14 | Lesser General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU Lesser General Public | |
| ab84e3ff PE |
17 | License along with the GNU C Library. If not, see |
| 18 | <http://www.gnu.org/licenses/>. */ | |
| de96d148 DJ |
19 | |
| 20 | #include <errno.h> | |
| 21 | #include <endian.h> | |
| 22 | #include <unistd.h> | |
| 23 | ||
| 24 | #include <sysdep-cancel.h> | |
| 25 | #include <sys/syscall.h> | |
| 26 | #include <bp-checks.h> | |
| 27 | ||
| 28 | ssize_t | |
| 29 | __libc_pread64 (fd, buf, count, offset) | |
| 30 | int fd; | |
| 31 | void *buf; | |
| 32 | size_t count; | |
| 33 | off64_t offset; | |
| 34 | { | |
| 35 | ssize_t result; | |
| 36 | ||
| 37 | if (SINGLE_THREAD_P) | |
| 38 | { | |
| 39 | /* In the ARM EABI, 64-bit values are aligned to even/odd register | |
| 40 | pairs for syscalls. */ | |
| 41 | result = INLINE_SYSCALL (pread64, 6, fd, CHECK_N (buf, count), count, 0, | |
| 42 | __LONG_LONG_PAIR ((off_t) (offset >> 32), | |
| 43 | (off_t) (offset & 0xffffffff))); | |
| 44 | ||
| 45 | return result; | |
| 46 | } | |
| 47 | ||
| 48 | int oldtype = LIBC_CANCEL_ASYNC (); | |
| 49 | ||
| 50 | /* In the ARM EABI, 64-bit values are aligned to even/odd register | |
| 51 | pairs for syscalls. */ | |
| 52 | result = INLINE_SYSCALL (pread64, 6, fd, CHECK_N (buf, count), count, 0, | |
| 53 | __LONG_LONG_PAIR ((off_t) (offset >> 32), | |
| 54 | (off_t) (offset & 0xffffffff))); | |
| 55 | ||
| 56 | LIBC_CANCEL_RESET (oldtype); | |
| 57 | ||
| 58 | return result; | |
| 59 | } | |
| 60 | ||
| 61 | weak_alias (__libc_pread64, __pread64) | |
| 62 | weak_alias (__libc_pread64, pread64) |