source: MondoRescue/trunk/mindi-busybox/miscutils/makedevs.c@ 956

Last change on this file since 956 was 821, checked in by Bruno Cornec, 18 years ago

Addition of busybox 1.2.1 as a mindi-busybox new package
This should avoid delivering binary files in mindi not built there (Fedora and Debian are quite serious about that)
File size: 5.7 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 "busybox.h"
11#include <stdio.h>
12#include <stdlib.h>
13#include <string.h>
14#include <fcntl.h>
15#include <time.h>
16#include <ctype.h>
17#include <unistd.h>
18#include <sys/types.h>
19#include <sys/sysmacros.h> /* major() and minor() */
20
21#ifdef CONFIG_FEATURE_MAKEDEVS_LEAF
22int makedevs_main(int argc, char **argv)
23{
24 mode_t mode;
25 char *basedev, *type, *nodname, buf[255];
26 int Smajor, Sminor, S, E;
27
28 if (argc < 7 || *argv[1]=='-')
29 bb_show_usage();
30
31 basedev = argv[1];
32 type = argv[2];
33 Smajor = atoi(argv[3]);
34 Sminor = atoi(argv[4]);
35 S = atoi(argv[5]);
36 E = atoi(argv[6]);
37 nodname = argc == 8 ? basedev : buf;
38
39 mode = 0660;
40
41 switch (type[0]) {
42 case 'c':
43 mode |= S_IFCHR;
44 break;
45 case 'b':
46 mode |= S_IFBLK;
47 break;
48 case 'f':
49 mode |= S_IFIFO;
50 break;
51 default:
52 bb_show_usage();
53 }
54
55 while (S <= E) {
56 int sz;
57
58 sz = snprintf(buf, sizeof(buf), "%s%d", basedev, S);
59 if(sz<0 || sz>=sizeof(buf)) /* libc different */
60 bb_error_msg_and_die("%s too large", basedev);
61
62 /* if mode != S_IFCHR and != S_IFBLK third param in mknod() ignored */
63
64 if (mknod(nodname, mode, makedev(Smajor, Sminor)))
65 bb_error_msg("Failed to create: %s", nodname);
66
67 if (nodname == basedev) /* ex. /dev/hda - to /dev/hda1 ... */
68 nodname = buf;
69 S++;
70 Sminor++;
71 }
72
73 return 0;
74}
75
76#elif defined CONFIG_FEATURE_MAKEDEVS_TABLE
77
78/* Licensed under the GPL v2 or later, see the file LICENSE in this tarball. */
79
80int makedevs_main(int argc, char **argv)
81{
82 FILE *table = stdin;
83 char *rootdir = NULL;
84 char *line = NULL;
85 int linenum = 0;
86 int ret = EXIT_SUCCESS;
87
88 unsigned long flags;
89 flags = bb_getopt_ulflags(argc, argv, "d:", &line);
90 if (line)
91 table = bb_xfopen(line, "r");
92
93 if (optind >= argc || (rootdir=argv[optind])==NULL) {
94 bb_error_msg_and_die("root directory not specified");
95 }
96
97 bb_xchdir(rootdir);
98
99 umask(0);
100
101 printf("rootdir=%s\n", rootdir);
102 if (line) {
103 printf("table='%s'\n", line);
104 } else {
105 printf("table=<stdin>\n");
106 }
107
108 while ((line = bb_get_chomped_line_from_file(table))) {
109 char type;
110 unsigned int mode = 0755;
111 unsigned int major = 0;
112 unsigned int minor = 0;
113 unsigned int count = 0;
114 unsigned int increment = 0;
115 unsigned int start = 0;
116 char name[41];
117 char user[41];
118 char group[41];
119 char *full_name;
120 uid_t uid;
121 gid_t gid;
122
123 linenum++;
124
125 if ((2 > sscanf(line, "%40s %c %o %40s %40s %u %u %u %u %u", name,
126 &type, &mode, user, group, &major,
127 &minor, &start, &increment, &count)) ||
128 ((major | minor | start | count | increment) > 255))
129 {
130 if (*line=='\0' || *line=='#' || isspace(*line))
131 continue;
132 bb_error_msg("line %d invalid: '%s'\n", linenum, line);
133 ret = EXIT_FAILURE;
134 continue;
135 }
136 if (name[0] == '#') {
137 continue;
138 }
139
140 gid = (*group) ? get_ug_id(group, bb_xgetgrnam) : getgid();
141 uid = (*user) ? get_ug_id(user, bb_xgetpwnam) : getuid();
142 full_name = concat_path_file(rootdir, name);
143
144 if (type == 'd') {
145 bb_make_directory(full_name, mode | S_IFDIR, FILEUTILS_RECUR);
146 if (chown(full_name, uid, gid) == -1) {
147 bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
148 ret = EXIT_FAILURE;
149 goto loop;
150 }
151 if ((mode != -1) && (chmod(full_name, mode) < 0)){
152 bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
153 ret = EXIT_FAILURE;
154 goto loop;
155 }
156 } else if (type == 'f') {
157 struct stat st;
158 if ((stat(full_name, &st) < 0 || !S_ISREG(st.st_mode))) {
159 bb_perror_msg("line %d: regular file '%s' does not exist", linenum, full_name);
160 ret = EXIT_FAILURE;
161 goto loop;
162 }
163 if (chown(full_name, uid, gid) == -1) {
164 bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
165 ret = EXIT_FAILURE;
166 goto loop;
167 }
168 if ((mode != -1) && (chmod(full_name, mode) < 0)){
169 bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
170 ret = EXIT_FAILURE;
171 goto loop;
172 }
173 } else
174 {
175 dev_t rdev;
176
177 if (type == 'p') {
178 mode |= S_IFIFO;
179 }
180 else if (type == 'c') {
181 mode |= S_IFCHR;
182 }
183 else if (type == 'b') {
184 mode |= S_IFBLK;
185 } else {
186 bb_error_msg("line %d: unsupported file type %c", linenum, type);
187 ret = EXIT_FAILURE;
188 goto loop;
189 }
190
191 if (count > 0) {
192 int i;
193 char *full_name_inc;
194
195 full_name_inc = xmalloc(strlen(full_name) + 4);
196 for (i = start; i < count; i++) {
197 sprintf(full_name_inc, "%s%d", full_name, i);
198 rdev = (major << 8) + minor + (i * increment - start);
199 if (mknod(full_name_inc, mode, rdev) == -1) {
200 bb_perror_msg("line %d: could not create node %s", linenum, full_name_inc);
201 ret = EXIT_FAILURE;
202 }
203 else if (chown(full_name_inc, uid, gid) == -1) {
204 bb_perror_msg("line %d: chown failed for %s", linenum, full_name_inc);
205 ret = EXIT_FAILURE;
206 }
207 if ((mode != -1) && (chmod(full_name_inc, mode) < 0)){
208 bb_perror_msg("line %d: chmod failed for %s", linenum, full_name_inc);
209 ret = EXIT_FAILURE;
210 }
211 }
212 free(full_name_inc);
213 } else {
214 rdev = (major << 8) + minor;
215 if (mknod(full_name, mode, rdev) == -1) {
216 bb_perror_msg("line %d: could not create node %s", linenum, full_name);
217 ret = EXIT_FAILURE;
218 }
219 else if (chown(full_name, uid, gid) == -1) {
220 bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
221 ret = EXIT_FAILURE;
222 }
223 if ((mode != -1) && (chmod(full_name, mode) < 0)){
224 bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
225 ret = EXIT_FAILURE;
226 }
227 }
228 }
229loop:
230 free(line);
231 free(full_name);
232 }
233 fclose(table);
234
235 return ret;
236}
237
238#else
239# error makedevs configuration error, either leaf or table must be selected
240#endif
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