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1 | /* Write block at given position in file without changing file pointer. |
2 | Hurd version. | |
c0c71388 | 3 | Copyright (C) 1999,2001 Free Software Foundation, Inc. |
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4 | This file is part of the GNU C Library. |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
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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. | |
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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 | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
8b2134db | 15 | |
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16 | You should have received a copy of the GNU Lesser General Public |
17 | License along with the GNU C Library; if not, write to the Free | |
18 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
19 | 02111-1307 USA. */ | |
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20 | |
21 | #include <errno.h> | |
22 | #include <unistd.h> | |
c768719d | 23 | #include <hurd/fd.h> |
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24 | |
25 | /* Write NBYTES of BUF to FD at given position OFFSET without changing | |
26 | the file position. Return the number written, or -1. */ | |
27 | ssize_t | |
221dc560 | 28 | __libc_pwrite (int fd, const void *buf, size_t nbytes, off_t offset) |
8b2134db | 29 | { |
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30 | error_t err; |
31 | if (offset < 0) | |
32 | err = EINVAL; | |
33 | else | |
34 | err = HURD_FD_USE (fd, _hurd_fd_write (descriptor, buf, &nbytes, offset)); | |
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35 | return err ? __hurd_dfail (fd, err) : nbytes; |
36 | } | |
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37 | |
38 | #ifndef __libc_pwrite | |
39 | strong_alias (__libc_pwrite, __pwrite) | |
40 | weak_alias (__libc_pwrite, pwrite) | |
41 | #endif |