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
|
/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <libgen.h>
#include "fs_mgr_priv.h"
char *me = "";
static void usage(void)
{
ERROR("%s: usage: %s <-a | -n mnt_point blk_dev | -u> <fstab_file>\n", me, me);
exit(1);
}
/* Parse the command line. If an error is encountered, print an error message
* and exit the program, do not return to the caller.
* Return the number of argv[] entries consumed.
*/
static void parse_options(int argc, char *argv[], int *a_flag, int *u_flag, int *n_flag,
char **n_name, char **n_blk_dev)
{
me = basename(strdup(argv[0]));
if (argc <= 1) {
usage();
}
if (!strcmp(argv[1], "-a")) {
if (argc != 3) {
usage();
}
*a_flag = 1;
}
if (!strcmp(argv[1], "-n")) {
if (argc != 5) {
usage();
}
*n_flag = 1;
*n_name = argv[2];
*n_blk_dev = argv[3];
}
if (!strcmp(argv[1], "-u")) {
if (argc != 3) {
usage();
}
*u_flag = 1;
}
/* If no flag is specified, it's an error */
if (!(*a_flag | *n_flag | *u_flag)) {
usage();
}
/* If more than one flag is specified, it's an error */
if ((*a_flag + *n_flag + *u_flag) > 1) {
usage();
}
return;
}
int main(int argc, char *argv[])
{
int a_flag=0;
int u_flag=0;
int n_flag=0;
char *n_name;
char *n_blk_dev;
char *fstab;
klog_init();
klog_set_level(6);
parse_options(argc, argv, &a_flag, &u_flag, &n_flag, &n_name, &n_blk_dev);
/* The name of the fstab file is last, after the option */
fstab = argv[argc - 1];
if (a_flag) {
return fs_mgr_mount_all(fstab);
} else if (n_flag) {
return fs_mgr_do_mount(fstab, n_name, n_blk_dev, 0);
} else if (u_flag) {
return fs_mgr_unmount_all(fstab);
} else {
ERROR("%s: Internal error, unknown option\n", me);
exit(1);
}
/* Should not get here */
exit(1);
}
|
