]>
Commit | Line | Data |
---|---|---|
7a770247 | 1 | /* Utilities for reading/writing fstab, mtab, etc. |
6b9fecdc | 2 | Copyright (C) 1995, 1996, 1997, 2000 Free Software Foundation, Inc. |
19361cb7 | 3 | This file is part of the GNU C Library. |
7a770247 | 4 | |
19361cb7 | 5 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
7a770247 | 9 | |
19361cb7 UD |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
7a770247 | 14 | |
41bdb6e2 AJ |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
7a770247 RM |
19 | |
20 | #include <mntent.h> | |
1cab5444 UD |
21 | #include <stdlib.h> |
22 | #include <bits/libc-lock.h> | |
23 | ||
24 | /* We don't want to allocate the static buffer all the time since it | |
25 | is not always used (in fact, rather infrequently). Accept the | |
26 | extra cost of a `malloc'. */ | |
27 | static char *getmntent_buffer; | |
28 | ||
29 | /* This is the size of the buffer. This is really big. */ | |
30 | #define BUFFER_SIZE 4096 | |
31 | ||
32 | ||
33 | static void | |
34 | allocate (void) | |
35 | { | |
36 | getmntent_buffer = (char *) malloc (BUFFER_SIZE); | |
37 | } | |
38 | ||
7a770247 | 39 | |
7a770247 RM |
40 | struct mntent * |
41 | getmntent (FILE *stream) | |
42 | { | |
7a770247 | 43 | static struct mntent m; |
1cab5444 UD |
44 | __libc_once_define (static, once); |
45 | __libc_once (once, allocate); | |
7a770247 | 46 | |
1cab5444 UD |
47 | if (getmntent_buffer == NULL) |
48 | /* If no core is available we don't have a chance to run the | |
49 | program successfully and so returning NULL is an acceptable | |
50 | result. */ | |
51 | return NULL; | |
52 | ||
53 | return __getmntent_r (stream, &m, getmntent_buffer, BUFFER_SIZE); | |
54 | } | |
55 | ||
56 | ||
57 | /* Make sure the memory is freed if the programs ends while in | |
58 | memory-debugging mode and something actually was allocated. */ | |
59 | static void | |
60 | __attribute__ ((unused)) | |
61 | free_mem (void) | |
62 | { | |
6b9fecdc | 63 | free (getmntent_buffer); |
7a770247 | 64 | } |
1cab5444 UD |
65 | |
66 | text_set_element (__libc_subfreeres, free_mem); |