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
|
---|
13 | /*
|
---|
14 | makedevs NAME TYPE MAJOR MINOR FIRST LAST [s]
|
---|
15 | TYPEs:
|
---|
16 | b Block device
|
---|
17 | c Character device
|
---|
18 | f FIFO
|
---|
19 |
|
---|
20 | FIRST..LAST specify numbers appended to NAME.
|
---|
21 | If 's' is the last argument, the base device is created as well.
|
---|
22 | Examples:
|
---|
23 | makedevs /dev/ttyS c 4 66 2 63 -> ttyS2-ttyS63
|
---|
24 | makedevs /dev/hda b 3 0 0 8 s -> hda,hda1-hda8
|
---|
25 | */
|
---|
26 | int makedevs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
27 | int makedevs_main(int argc, char **argv)
|
---|
28 | {
|
---|
29 | mode_t mode;
|
---|
30 | char *basedev, *type, *nodname, *buf;
|
---|
31 | int Smajor, Sminor, S, E;
|
---|
32 |
|
---|
33 | if (argc < 7 || argv[1][0] == '-')
|
---|
34 | bb_show_usage();
|
---|
35 |
|
---|
36 | basedev = argv[1];
|
---|
37 | buf = xasprintf("%s%u", argv[1], (unsigned)-1);
|
---|
38 | type = argv[2];
|
---|
39 | Smajor = xatoi_positive(argv[3]);
|
---|
40 | Sminor = xatoi_positive(argv[4]);
|
---|
41 | S = xatoi_positive(argv[5]);
|
---|
42 | E = xatoi_positive(argv[6]);
|
---|
43 | nodname = argv[7] ? basedev : buf;
|
---|
44 |
|
---|
45 | mode = 0660;
|
---|
46 | switch (type[0]) {
|
---|
47 | case 'c':
|
---|
48 | mode |= S_IFCHR;
|
---|
49 | break;
|
---|
50 | case 'b':
|
---|
51 | mode |= S_IFBLK;
|
---|
52 | break;
|
---|
53 | case 'f':
|
---|
54 | mode |= S_IFIFO;
|
---|
55 | break;
|
---|
56 | default:
|
---|
57 | bb_show_usage();
|
---|
58 | }
|
---|
59 |
|
---|
60 | while (S <= E) {
|
---|
61 | sprintf(buf, "%s%u", basedev, S);
|
---|
62 |
|
---|
63 | /* if mode != S_IFCHR and != S_IFBLK,
|
---|
64 | * third param in mknod() ignored */
|
---|
65 | if (mknod(nodname, mode, makedev(Smajor, Sminor)))
|
---|
66 | bb_perror_msg("can't create '%s'", nodname);
|
---|
67 |
|
---|
68 | /*if (nodname == basedev)*/ /* ex. /dev/hda - to /dev/hda1 ... */
|
---|
69 | nodname = buf;
|
---|
70 | S++;
|
---|
71 | Sminor++;
|
---|
72 | }
|
---|
73 |
|
---|
74 | return 0;
|
---|
75 | }
|
---|
76 |
|
---|
77 | #elif ENABLE_FEATURE_MAKEDEVS_TABLE
|
---|
78 |
|
---|
79 | /* Licensed under GPLv2 or later, see file LICENSE in this source tree. */
|
---|
80 |
|
---|
81 | int makedevs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
82 | int makedevs_main(int argc UNUSED_PARAM, char **argv)
|
---|
83 | {
|
---|
84 | parser_t *parser;
|
---|
85 | char *line = (char *)"-";
|
---|
86 | int ret = EXIT_SUCCESS;
|
---|
87 |
|
---|
88 | opt_complementary = "=1"; /* exactly one param */
|
---|
89 | getopt32(argv, "d:", &line);
|
---|
90 | argv += optind;
|
---|
91 |
|
---|
92 | xchdir(*argv); /* ensure root dir exists */
|
---|
93 |
|
---|
94 | umask(0);
|
---|
95 |
|
---|
96 | printf("rootdir=%s\ntable=", *argv);
|
---|
97 | if (NOT_LONE_DASH(line)) {
|
---|
98 | printf("'%s'\n", line);
|
---|
99 | } else {
|
---|
100 | puts("<stdin>");
|
---|
101 | }
|
---|
102 |
|
---|
103 | parser = config_open(line);
|
---|
104 | while (config_read(parser, &line, 1, 1, "# \t", PARSE_NORMAL)) {
|
---|
105 | int linenum;
|
---|
106 | char type;
|
---|
107 | unsigned mode = 0755;
|
---|
108 | unsigned major = 0;
|
---|
109 | unsigned minor = 0;
|
---|
110 | unsigned count = 0;
|
---|
111 | unsigned increment = 0;
|
---|
112 | unsigned start = 0;
|
---|
113 | char name[41];
|
---|
114 | char user[41];
|
---|
115 | char group[41];
|
---|
116 | char *full_name = name;
|
---|
117 | uid_t uid;
|
---|
118 | gid_t gid;
|
---|
119 |
|
---|
120 | linenum = parser->lineno;
|
---|
121 |
|
---|
122 | if ((2 > sscanf(line, "%40s %c %o %40s %40s %u %u %u %u %u",
|
---|
123 | name, &type, &mode, user, group,
|
---|
124 | &major, &minor, &start, &increment, &count))
|
---|
125 | || ((unsigned)(major | minor | start | count | increment) > 255)
|
---|
126 | ) {
|
---|
127 | bb_error_msg("invalid line %d: '%s'", linenum, line);
|
---|
128 | ret = EXIT_FAILURE;
|
---|
129 | continue;
|
---|
130 | }
|
---|
131 |
|
---|
132 | gid = (*group) ? get_ug_id(group, xgroup2gid) : getgid();
|
---|
133 | uid = (*user) ? get_ug_id(user, xuname2uid) : getuid();
|
---|
134 | /* We are already in the right root dir,
|
---|
135 | * so make absolute paths relative */
|
---|
136 | if ('/' == *full_name)
|
---|
137 | full_name++;
|
---|
138 |
|
---|
139 | if (type == 'd') {
|
---|
140 | bb_make_directory(full_name, mode | S_IFDIR, FILEUTILS_RECUR);
|
---|
141 | if (chown(full_name, uid, gid) == -1) {
|
---|
142 | chown_fail:
|
---|
143 | bb_perror_msg("line %d: can't chown %s", linenum, full_name);
|
---|
144 | ret = EXIT_FAILURE;
|
---|
145 | continue;
|
---|
146 | }
|
---|
147 | if (chmod(full_name, mode) < 0) {
|
---|
148 | chmod_fail:
|
---|
149 | bb_perror_msg("line %d: can't chmod %s", linenum, full_name);
|
---|
150 | ret = EXIT_FAILURE;
|
---|
151 | continue;
|
---|
152 | }
|
---|
153 | } else if (type == 'f') {
|
---|
154 | struct stat st;
|
---|
155 | if ((stat(full_name, &st) < 0 || !S_ISREG(st.st_mode))) {
|
---|
156 | bb_perror_msg("line %d: regular file '%s' does not exist", linenum, full_name);
|
---|
157 | ret = EXIT_FAILURE;
|
---|
158 | continue;
|
---|
159 | }
|
---|
160 | if (chown(full_name, uid, gid) < 0)
|
---|
161 | goto chown_fail;
|
---|
162 | if (chmod(full_name, mode) < 0)
|
---|
163 | goto chmod_fail;
|
---|
164 | } else {
|
---|
165 | dev_t rdev;
|
---|
166 | unsigned i;
|
---|
167 | char *full_name_inc;
|
---|
168 |
|
---|
169 | if (type == 'p') {
|
---|
170 | mode |= S_IFIFO;
|
---|
171 | } else if (type == 'c') {
|
---|
172 | mode |= S_IFCHR;
|
---|
173 | } else if (type == 'b') {
|
---|
174 | mode |= S_IFBLK;
|
---|
175 | } else {
|
---|
176 | bb_error_msg("line %d: unsupported file type %c", linenum, type);
|
---|
177 | ret = EXIT_FAILURE;
|
---|
178 | continue;
|
---|
179 | }
|
---|
180 |
|
---|
181 | full_name_inc = xmalloc(strlen(full_name) + sizeof(int)*3 + 2);
|
---|
182 | if (count)
|
---|
183 | count--;
|
---|
184 | for (i = start; i <= start + count; i++) {
|
---|
185 | sprintf(full_name_inc, count ? "%s%u" : "%s", full_name, i);
|
---|
186 | rdev = makedev(major, minor + (i - start) * increment);
|
---|
187 | if (mknod(full_name_inc, mode, rdev) < 0) {
|
---|
188 | bb_perror_msg("line %d: can't create node %s", linenum, full_name_inc);
|
---|
189 | ret = EXIT_FAILURE;
|
---|
190 | } else if (chown(full_name_inc, uid, gid) < 0) {
|
---|
191 | bb_perror_msg("line %d: can't chown %s", linenum, full_name_inc);
|
---|
192 | ret = EXIT_FAILURE;
|
---|
193 | } else if (chmod(full_name_inc, mode) < 0) {
|
---|
194 | bb_perror_msg("line %d: can't chmod %s", linenum, full_name_inc);
|
---|
195 | ret = EXIT_FAILURE;
|
---|
196 | }
|
---|
197 | }
|
---|
198 | free(full_name_inc);
|
---|
199 | }
|
---|
200 | }
|
---|
201 | if (ENABLE_FEATURE_CLEAN_UP)
|
---|
202 | config_close(parser);
|
---|
203 |
|
---|
204 | return ret;
|
---|
205 | }
|
---|
206 |
|
---|
207 | #else
|
---|
208 | # error makedevs configuration error, either leaf or table must be selected
|
---|
209 | #endif
|
---|