source: MondoRescue/branches/2.2.5/mindi-busybox/miscutils/makedevs.c@ 1765

Last change on this file since 1765 was 1765, checked in by Bruno Cornec, 16 years ago

Update to busybox 1.7.2
File size: 5.5 KB
Line 
1/* vi: set sw=4 ts=4: */
2/*
3 * public domain -- Dave 'Kill a Cop' Cinege <dcinege@psychosis.com>
4 *
5 * makedevs
6 * Make ranges of device files quickly.
7 * known bugs: can't deal with alpha ranges
8 */
9
10#include "libbb.h"
11
12#if ENABLE_FEATURE_MAKEDEVS_LEAF
13int makedevs_main(int argc, char **argv);
14int makedevs_main(int argc, char **argv)
15{
16 mode_t mode;
17 char *basedev, *type, *nodname, buf[255];
18 int Smajor, Sminor, S, E;
19
20 if (argc < 7 || *argv[1]=='-')
21 bb_show_usage();
22
23 basedev = argv[1];
24 type = argv[2];
25 Smajor = xatoi_u(argv[3]);
26 Sminor = xatoi_u(argv[4]);
27 S = xatoi_u(argv[5]);
28 E = xatoi_u(argv[6]);
29 nodname = argc == 8 ? basedev : buf;
30
31 mode = 0660;
32
33 switch (type[0]) {
34 case 'c':
35 mode |= S_IFCHR;
36 break;
37 case 'b':
38 mode |= S_IFBLK;
39 break;
40 case 'f':
41 mode |= S_IFIFO;
42 break;
43 default:
44 bb_show_usage();
45 }
46
47 while (S <= E) {
48 int sz;
49
50 sz = snprintf(buf, sizeof(buf), "%s%d", basedev, S);
51 if (sz < 0 || sz >= sizeof(buf)) /* libc different */
52 bb_error_msg_and_die("%s too large", basedev);
53
54 /* if mode != S_IFCHR and != S_IFBLK third param in mknod() ignored */
55
56 if (mknod(nodname, mode, makedev(Smajor, Sminor)))
57 bb_error_msg("failed to create: %s", nodname);
58
59 if (nodname == basedev) /* ex. /dev/hda - to /dev/hda1 ... */
60 nodname = buf;
61 S++;
62 Sminor++;
63 }
64
65 return 0;
66}
67
68#elif ENABLE_FEATURE_MAKEDEVS_TABLE
69
70/* Licensed under the GPL v2 or later, see the file LICENSE in this tarball. */
71
72int makedevs_main(int argc, char **argv);
73int makedevs_main(int argc, char **argv)
74{
75 FILE *table = stdin;
76 char *rootdir = NULL;
77 char *line = NULL;
78 int linenum = 0;
79 int ret = EXIT_SUCCESS;
80
81 getopt32(argv, "d:", &line);
82 if (line)
83 table = xfopen(line, "r");
84
85 if (optind >= argc || (rootdir=argv[optind])==NULL) {
86 bb_error_msg_and_die("root directory not specified");
87 }
88
89 xchdir(rootdir);
90
91 umask(0);
92
93 printf("rootdir=%s\n", rootdir);
94 if (line) {
95 printf("table='%s'\n", line);
96 } else {
97 printf("table=<stdin>\n");
98 }
99
100 while ((line = xmalloc_getline(table))) {
101 char type;
102 unsigned int mode = 0755;
103 unsigned int major = 0;
104 unsigned int minor = 0;
105 unsigned int count = 0;
106 unsigned int increment = 0;
107 unsigned int start = 0;
108 char name[41];
109 char user[41];
110 char group[41];
111 char *full_name;
112 uid_t uid;
113 gid_t gid;
114
115 linenum++;
116
117 if ((2 > sscanf(line, "%40s %c %o %40s %40s %u %u %u %u %u", name,
118 &type, &mode, user, group, &major,
119 &minor, &start, &increment, &count)) ||
120 ((major | minor | start | count | increment) > 255))
121 {
122 if (*line=='\0' || *line=='#' || isspace(*line))
123 continue;
124 bb_error_msg("line %d invalid: '%s'", linenum, line);
125 ret = EXIT_FAILURE;
126 continue;
127 }
128 if (name[0] == '#') {
129 continue;
130 }
131
132 gid = (*group) ? get_ug_id(group, xgroup2gid) : getgid();
133 uid = (*user) ? get_ug_id(user, xuname2uid) : getuid();
134 full_name = concat_path_file(rootdir, name);
135
136 if (type == 'd') {
137 bb_make_directory(full_name, mode | S_IFDIR, FILEUTILS_RECUR);
138 if (chown(full_name, uid, gid) == -1) {
139 bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
140 ret = EXIT_FAILURE;
141 goto loop;
142 }
143 if ((mode != -1) && (chmod(full_name, mode) < 0)){
144 bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
145 ret = EXIT_FAILURE;
146 goto loop;
147 }
148 } else if (type == 'f') {
149 struct stat st;
150 if ((stat(full_name, &st) < 0 || !S_ISREG(st.st_mode))) {
151 bb_perror_msg("line %d: regular file '%s' does not exist", linenum, full_name);
152 ret = EXIT_FAILURE;
153 goto loop;
154 }
155 if (chown(full_name, uid, gid) == -1) {
156 bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
157 ret = EXIT_FAILURE;
158 goto loop;
159 }
160 if ((mode != -1) && (chmod(full_name, mode) < 0)){
161 bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
162 ret = EXIT_FAILURE;
163 goto loop;
164 }
165 } else {
166 dev_t rdev;
167
168 if (type == 'p') {
169 mode |= S_IFIFO;
170 }
171 else if (type == 'c') {
172 mode |= S_IFCHR;
173 }
174 else if (type == 'b') {
175 mode |= S_IFBLK;
176 } else {
177 bb_error_msg("line %d: unsupported file type %c", linenum, type);
178 ret = EXIT_FAILURE;
179 goto loop;
180 }
181
182 if (count > 0) {
183 int i;
184 char *full_name_inc;
185
186 full_name_inc = xmalloc(strlen(full_name) + 4);
187 for (i = start; i < count; i++) {
188 sprintf(full_name_inc, "%s%d", full_name, i);
189 rdev = makedev(major, minor + (i * increment - start));
190 if (mknod(full_name_inc, mode, rdev) == -1) {
191 bb_perror_msg("line %d: cannot create node %s", linenum, full_name_inc);
192 ret = EXIT_FAILURE;
193 }
194 else if (chown(full_name_inc, uid, gid) == -1) {
195 bb_perror_msg("line %d: chown failed for %s", linenum, full_name_inc);
196 ret = EXIT_FAILURE;
197 }
198 if ((mode != -1) && (chmod(full_name_inc, mode) < 0)){
199 bb_perror_msg("line %d: chmod failed for %s", linenum, full_name_inc);
200 ret = EXIT_FAILURE;
201 }
202 }
203 free(full_name_inc);
204 } else {
205 rdev = makedev(major, minor);
206 if (mknod(full_name, mode, rdev) == -1) {
207 bb_perror_msg("line %d: cannot create node %s", linenum, full_name);
208 ret = EXIT_FAILURE;
209 }
210 else if (chown(full_name, uid, gid) == -1) {
211 bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
212 ret = EXIT_FAILURE;
213 }
214 if ((mode != -1) && (chmod(full_name, mode) < 0)){
215 bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
216 ret = EXIT_FAILURE;
217 }
218 }
219 }
220loop:
221 free(line);
222 free(full_name);
223 }
224 fclose(table);
225
226 return ret;
227}
228
229#else
230# error makedevs configuration error, either leaf or table must be selected
231#endif
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