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046219c7 | 1 | /* Copyright (C) 1997, 1998, 2000 Free Software Foundation, Inc. |
6d4752d8 UD |
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 Library General Public License as | |
7 | published by the Free Software Foundation; either version 2 of the | |
8 | 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 | Library General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Library General Public | |
16 | License along with the GNU C Library; see the file COPYING.LIB. If not, | |
17 | write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
18 | Boston, MA 02111-1307, USA. */ | |
19 | ||
20 | #include <errno.h> | |
21 | #include <unistd.h> | |
22 | ||
23 | #include <sysdep.h> | |
24 | #include <sys/syscall.h> | |
25 | ||
046219c7 AJ |
26 | #include <kernel-features.h> |
27 | ||
28 | #if defined __NR_pwrite || __ASSUME_PWRITE_SYSCALL > 0 | |
6d4752d8 UD |
29 | |
30 | extern ssize_t __syscall_pwrite (int fd, const void *buf, size_t count, | |
31 | int dummy, off_t offset_hi, off_t offset_lo); | |
32 | ||
046219c7 | 33 | # if __ASSUME_PWRITE_SYSCALL == 0 |
6d4752d8 UD |
34 | static ssize_t __emulate_pwrite (int fd, const void *buf, size_t count, |
35 | off_t offset) internal_function; | |
046219c7 | 36 | # endif |
6d4752d8 UD |
37 | |
38 | ssize_t | |
046219c7 | 39 | __libc_pwrite (fd, buf, count, offset) |
6d4752d8 UD |
40 | int fd; |
41 | const void *buf; | |
42 | size_t count; | |
43 | off_t offset; | |
44 | { | |
45 | ssize_t result; | |
46 | ||
47 | /* First try the syscall. */ | |
046219c7 | 48 | # if defined(__MIPSEB__) |
6d4752d8 | 49 | result = INLINE_SYSCALL (pwrite, 6, fd, buf, count, 0, 0, offset); |
046219c7 | 50 | # elif defined(__MIPSEL__) |
6d4752d8 | 51 | result = INLINE_SYSCALL (pwrite, 6, fd, buf, count, 0, offset, 0); |
046219c7 AJ |
52 | # endif |
53 | # if __ASSUME_PWRITE_SYSCALL == 0 | |
6d4752d8 UD |
54 | if (result == -1 && errno == ENOSYS) |
55 | /* No system call available. Use the emulation. */ | |
56 | result = __emulate_pwrite (fd, buf, count, offset); | |
046219c7 | 57 | # endif |
6d4752d8 UD |
58 | |
59 | return result; | |
60 | } | |
61 | ||
046219c7 AJ |
62 | strong_alias (__libc_pwrite, __pwrite) |
63 | weak_alias (__libc_pwrite, pwrite) | |
6d4752d8 | 64 | |
046219c7 | 65 | # define __libc_pwrite(fd, buf, count, offset) \ |
6d4752d8 UD |
66 | static internal_function __emulate_pwrite (fd, buf, count, offset) |
67 | #endif | |
046219c7 AJ |
68 | |
69 | #if __ASSUME_PWRITE_SYSCALL == 0 | |
70 | # include <sysdeps/posix/pwrite.c> | |
71 | #endif |