1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/* vi: set sw=4 ts=4: */
/*
* Mini swapon/swapoff implementation for busybox
*
* Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen
* Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <stdio.h>
#include <mntent.h>
#include <dirent.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <sys/mount.h>
#if __GNU_LIBRARY__ < 5
/* libc5 doesn't have sys/swap.h, define these here. */
extern int swapon (__const char *__path, int __flags);
extern int swapoff (__const char *__path);
#else
#include <sys/swap.h>
#endif
#include "busybox.h"
static int whichApp;
static const int SWAPON_APP = 1;
static const int SWAPOFF_APP = 2;
static void swap_enable_disable(char *device)
{
int status;
if (whichApp == SWAPON_APP)
status = swapon(device, 0);
else
status = swapoff(device);
if (status != 0)
perror_msg_and_die(applet_name);
}
static void do_em_all(void)
{
struct mntent *m;
FILE *f = setmntent("/etc/fstab", "r");
if (f == NULL)
perror_msg_and_die("/etc/fstab");
while ((m = getmntent(f)) != NULL) {
if (strcmp(m->mnt_type, MNTTYPE_SWAP)==0) {
swap_enable_disable(m->mnt_fsname);
}
}
endmntent(f);
exit(EXIT_SUCCESS);
}
extern int swap_on_off_main(int argc, char **argv)
{
if (strcmp(applet_name, "swapon") == 0) {
whichApp = SWAPON_APP;
} else {
whichApp = SWAPOFF_APP;
}
if (argc != 2) {
goto usage_and_exit;
}
argc--;
argv++;
/* Parse any options */
while (**argv == '-') {
while (*++(*argv))
switch (**argv) {
case 'a':
{
struct stat statBuf;
if (stat("/etc/fstab", &statBuf) < 0)
error_msg_and_die("/etc/fstab file missing");
}
do_em_all();
break;
default:
goto usage_and_exit;
}
}
swap_enable_disable(*argv);
return EXIT_SUCCESS;
usage_and_exit:
show_usage();
}
|
