make_ext4fs_main.c revision 983fb19d83d2391b19b289fc150495d8642378c4 
1/*
2 * Copyright (C) 2010 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 <unistd.h>
18#include <libgen.h>
19
20#if defined(__linux__)
21#include <linux/fs.h>
22#elif defined(__APPLE__) && defined(__MACH__)
23#include <sys/disk.h>
24#endif
25
26#include "make_ext4fs.h"
27
28extern struct fs_info info;
29
30
31static void usage(char *path)
32{
33        fprintf(stderr, "%s [ -l <len> ] [ -j <journal size> ] [ -b <block_size> ]\n", basename(path));
34        fprintf(stderr, "    [ -g <blocks per group> ] [ -i <inodes> ] [ -I <inode size> ]\n");
35        fprintf(stderr, "    [ -L <label> ] [ -f ] [ -a <android mountpoint> ]\n");
36        fprintf(stderr, "    [ -z | -s ] [ -J ]\n");
37        fprintf(stderr, "    <filename> [<directory>]\n");
38}
39
40int main(int argc, char **argv)
41{
42        int opt;
43        const char *filename = NULL;
44        const char *directory = NULL;
45        char *mountpoint = "";
46        int android = 0;
47        int gzip = 0;
48        int sparse = 0;
49        int crc = 0;
50
51        while ((opt = getopt(argc, argv, "l:j:b:g:i:I:L:a:fzJsc")) != -1) {
52                switch (opt) {
53                case 'l':
54                        info.len = parse_num(optarg);
55                        break;
56                case 'j':
57                        info.journal_blocks = parse_num(optarg);
58                        break;
59                case 'b':
60                        info.block_size = parse_num(optarg);
61                        break;
62                case 'g':
63                        info.blocks_per_group = parse_num(optarg);
64                        break;
65                case 'i':
66                        info.inodes = parse_num(optarg);
67                        break;
68                case 'I':
69                        info.inode_size = parse_num(optarg);
70                        break;
71                case 'L':
72                        info.label = optarg;
73                        break;
74                case 'f':
75                        force = 1;
76                        break;
77                case 'a':
78                        android = 1;
79                        mountpoint = optarg;
80                        break;
81                case 'z':
82                        gzip = 1;
83                        break;
84		case 'J':
85			info.no_journal = 1;
86			break;
87		case 'c':
88			crc = 1;
89			break;
90                case 's':
91                        sparse = 1;
92                        break;
93                default: /* '?' */
94                        usage(argv[0]);
95                        exit(EXIT_FAILURE);
96                }
97        }
98
99	if (gzip && sparse) {
100                fprintf(stderr, "Cannot specify both gzip and sparse\n");
101                usage(argv[0]);
102                exit(EXIT_FAILURE);
103	}
104
105        if (optind >= argc) {
106                fprintf(stderr, "Expected filename after options\n");
107                usage(argv[0]);
108                exit(EXIT_FAILURE);
109        }
110
111        filename = argv[optind++];
112
113        if (optind < argc)
114                directory = argv[optind++];
115
116        if (optind < argc) {
117                fprintf(stderr, "Unexpected argument: %s\n", argv[optind]);
118                usage(argv[0]);
119                exit(EXIT_FAILURE);
120        }
121
122        return make_ext4fs_internal(filename, directory, mountpoint, android, gzip,
123        		sparse, crc);
124}
125