• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1 /*
2  * Copyright (C) 2012 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #include <stdio.h>
18 #include <string.h>
19 #include <stdlib.h>
20 #include <libgen.h>
21 #include "fs_mgr_priv.h"
22 
23 char *me = "";
24 
usage(void)25 static void usage(void)
26 {
27     ERROR("%s: usage: %s <-a | -n mnt_point blk_dev | -u> <fstab_file>\n", me, me);
28     exit(1);
29 }
30 
31 /* Parse the command line.  If an error is encountered, print an error message
32  * and exit the program, do not return to the caller.
33  * Return the number of argv[] entries consumed.
34  */
parse_options(int argc,char * argv[],int * a_flag,int * u_flag,int * n_flag,char ** n_name,char ** n_blk_dev)35 static void parse_options(int argc, char *argv[], int *a_flag, int *u_flag, int *n_flag,
36                      char **n_name, char **n_blk_dev)
37 {
38     me = basename(strdup(argv[0]));
39 
40     if (argc <= 1) {
41         usage();
42     }
43 
44     if (!strcmp(argv[1], "-a")) {
45         if (argc != 3) {
46             usage();
47         }
48         *a_flag = 1;
49     }
50     if (!strcmp(argv[1], "-n")) {
51         if (argc != 5) {
52             usage();
53         }
54         *n_flag = 1;
55         *n_name = argv[2];
56         *n_blk_dev = argv[3];
57     }
58     if (!strcmp(argv[1], "-u")) {
59         if (argc != 3) {
60             usage();
61         }
62         *u_flag = 1;
63     }
64 
65     /* If no flag is specified, it's an error */
66     if (!(*a_flag | *n_flag | *u_flag)) {
67         usage();
68     }
69 
70     /* If more than one flag is specified, it's an error */
71     if ((*a_flag + *n_flag + *u_flag) > 1) {
72         usage();
73     }
74 
75     return;
76 }
77 
main(int argc,char * argv[])78 int main(int argc, char *argv[])
79 {
80     int a_flag=0;
81     int u_flag=0;
82     int n_flag=0;
83     char *n_name;
84     char *n_blk_dev;
85     char *fstab;
86 
87     klog_init();
88     klog_set_level(6);
89 
90     parse_options(argc, argv, &a_flag, &u_flag, &n_flag, &n_name, &n_blk_dev);
91 
92     /* The name of the fstab file is last, after the option */
93     fstab = argv[argc - 1];
94 
95     if (a_flag) {
96         return fs_mgr_mount_all(fstab);
97     } else if (n_flag) {
98         return fs_mgr_do_mount(fstab, n_name, n_blk_dev, 0);
99     } else if (u_flag) {
100         return fs_mgr_unmount_all(fstab);
101     } else {
102         ERROR("%s: Internal error, unknown option\n", me);
103         exit(1);
104     }
105 
106     /* Should not get here */
107     exit(1);
108 }
109 
110