1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
|
/* vi: set sw=4 ts=4: */
/*
* public domain -- Dave 'Kill a Cop' Cinege <dcinege@psychosis.com>
*
* makedevs
* Make ranges of device files quickly.
* known bugs: can't deal with alpha ranges
*/
//usage:#if ENABLE_FEATURE_MAKEDEVS_LEAF
//usage:#define makedevs_trivial_usage
//usage: "NAME TYPE MAJOR MINOR FIRST LAST [s]"
//usage:#define makedevs_full_usage "\n\n"
//usage: "Create a range of block or character special files"
//usage: "\n"
//usage: "\nTYPE is:"
//usage: "\n b Block device"
//usage: "\n c Character device"
//usage: "\n f FIFO, MAJOR and MINOR are ignored"
//usage: "\n"
//usage: "\nFIRST..LAST specify numbers appended to NAME."
//usage: "\nIf 's' is the last argument, the base device is created as well."
//usage: "\n"
//usage: "\nExamples:"
//usage: "\n makedevs /dev/ttyS c 4 66 2 63 -> ttyS2-ttyS63"
//usage: "\n makedevs /dev/hda b 3 0 0 8 s -> hda,hda1-hda8"
//usage:
//usage:#define makedevs_example_usage
//usage: "# makedevs /dev/ttyS c 4 66 2 63\n"
//usage: "[creates ttyS2-ttyS63]\n"
//usage: "# makedevs /dev/hda b 3 0 0 8 s\n"
//usage: "[creates hda,hda1-hda8]\n"
//usage:#endif
//usage:
//usage:#if ENABLE_FEATURE_MAKEDEVS_TABLE
//usage:#define makedevs_trivial_usage
//usage: "[-d device_table] rootdir"
//usage:#define makedevs_full_usage "\n\n"
//usage: "Create a range of special files as specified in a device table.\n"
//usage: "Device table entries take the form of:\n"
//usage: "<type> <mode> <uid> <gid> <major> <minor> <start> <inc> <count>\n"
//usage: "Where name is the file name, type can be one of:\n"
//usage: " f Regular file\n"
//usage: " d Directory\n"
//usage: " c Character device\n"
//usage: " b Block device\n"
//usage: " p Fifo (named pipe)\n"
//usage: "uid is the user id for the target file, gid is the group id for the\n"
//usage: "target file. The rest of the entries (major, minor, etc) apply to\n"
//usage: "to device special files. A '-' may be used for blank entries."
//usage:
//usage:#define makedevs_example_usage
//usage: "For example:\n"
//usage: "<name> <type> <mode><uid><gid><major><minor><start><inc><count>\n"
//usage: "/dev d 755 0 0 - - - - -\n"
//usage: "/dev/console c 666 0 0 5 1 - - -\n"
//usage: "/dev/null c 666 0 0 1 3 0 0 -\n"
//usage: "/dev/zero c 666 0 0 1 5 0 0 -\n"
//usage: "/dev/hda b 640 0 0 3 0 0 0 -\n"
//usage: "/dev/hda b 640 0 0 3 1 1 1 15\n\n"
//usage: "Will Produce:\n"
//usage: "/dev\n"
//usage: "/dev/console\n"
//usage: "/dev/null\n"
//usage: "/dev/zero\n"
//usage: "/dev/hda\n"
//usage: "/dev/hda[0-15]\n"
//usage:#endif
#include "libbb.h"
#if ENABLE_FEATURE_MAKEDEVS_LEAF
/*
makedevs NAME TYPE MAJOR MINOR FIRST LAST [s]
TYPEs:
b Block device
c Character device
f FIFO
FIRST..LAST specify numbers appended to NAME.
If 's' is the last argument, the base device is created as well.
Examples:
makedevs /dev/ttyS c 4 66 2 63 -> ttyS2-ttyS63
makedevs /dev/hda b 3 0 0 8 s -> hda,hda1-hda8
*/
int makedevs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int makedevs_main(int argc, char **argv)
{
mode_t mode;
char *basedev, *type, *nodname, *buf;
int Smajor, Sminor, S, E;
if (argc < 7 || argv[1][0] == '-')
bb_show_usage();
basedev = argv[1];
buf = xasprintf("%s%u", argv[1], (unsigned)-1);
type = argv[2];
Smajor = xatoi_positive(argv[3]);
Sminor = xatoi_positive(argv[4]);
S = xatoi_positive(argv[5]);
E = xatoi_positive(argv[6]);
nodname = argv[7] ? basedev : buf;
mode = 0660;
switch (type[0]) {
case 'c':
mode |= S_IFCHR;
break;
case 'b':
mode |= S_IFBLK;
break;
case 'f':
mode |= S_IFIFO;
break;
default:
bb_show_usage();
}
while (S <= E) {
sprintf(buf, "%s%u", basedev, S);
/* if mode != S_IFCHR and != S_IFBLK,
* third param in mknod() ignored */
if (mknod(nodname, mode, makedev(Smajor, Sminor)))
bb_perror_msg("can't create '%s'", nodname);
/*if (nodname == basedev)*/ /* ex. /dev/hda - to /dev/hda1 ... */
nodname = buf;
S++;
Sminor++;
}
return 0;
}
#elif ENABLE_FEATURE_MAKEDEVS_TABLE
/* Licensed under GPLv2 or later, see file LICENSE in this source tree. */
int makedevs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int makedevs_main(int argc UNUSED_PARAM, char **argv)
{
parser_t *parser;
char *line = (char *)"-";
int ret = EXIT_SUCCESS;
opt_complementary = "=1"; /* exactly one param */
getopt32(argv, "d:", &line);
argv += optind;
xchdir(*argv); /* ensure root dir exists */
umask(0);
printf("rootdir=%s\ntable=", *argv);
if (NOT_LONE_DASH(line)) {
printf("'%s'\n", line);
} else {
puts("<stdin>");
}
parser = config_open(line);
while (config_read(parser, &line, 1, 1, "# \t", PARSE_NORMAL)) {
int linenum;
char type;
unsigned mode = 0755;
unsigned major = 0;
unsigned minor = 0;
unsigned count = 0;
unsigned increment = 0;
unsigned start = 0;
char name[41];
char user[41];
char group[41];
char *full_name = name;
uid_t uid;
gid_t gid;
linenum = parser->lineno;
if ((2 > sscanf(line, "%40s %c %o %40s %40s %u %u %u %u %u",
name, &type, &mode, user, group,
&major, &minor, &start, &increment, &count))
|| ((unsigned)(major | minor | start | count | increment) > 255)
) {
bb_error_msg("invalid line %d: '%s'", linenum, line);
ret = EXIT_FAILURE;
continue;
}
gid = (*group) ? get_ug_id(group, xgroup2gid) : getgid();
uid = (*user) ? get_ug_id(user, xuname2uid) : getuid();
/* We are already in the right root dir,
* so make absolute paths relative */
if ('/' == *full_name)
full_name++;
if (type == 'd') {
bb_make_directory(full_name, mode | S_IFDIR, FILEUTILS_RECUR);
if (chown(full_name, uid, gid) == -1) {
chown_fail:
bb_perror_msg("line %d: can't chown %s", linenum, full_name);
ret = EXIT_FAILURE;
continue;
}
if (chmod(full_name, mode) < 0) {
chmod_fail:
bb_perror_msg("line %d: can't chmod %s", linenum, full_name);
ret = EXIT_FAILURE;
continue;
}
} else if (type == 'f') {
struct stat st;
if ((stat(full_name, &st) < 0 || !S_ISREG(st.st_mode))) {
bb_perror_msg("line %d: regular file '%s' does not exist", linenum, full_name);
ret = EXIT_FAILURE;
continue;
}
if (chown(full_name, uid, gid) < 0)
goto chown_fail;
if (chmod(full_name, mode) < 0)
goto chmod_fail;
} else {
dev_t rdev;
unsigned i;
char *full_name_inc;
if (type == 'p') {
mode |= S_IFIFO;
} else if (type == 'c') {
mode |= S_IFCHR;
} else if (type == 'b') {
mode |= S_IFBLK;
} else {
bb_error_msg("line %d: unsupported file type %c", linenum, type);
ret = EXIT_FAILURE;
continue;
}
full_name_inc = xmalloc(strlen(full_name) + sizeof(int)*3 + 2);
if (count)
count--;
for (i = start; i <= start + count; i++) {
sprintf(full_name_inc, count ? "%s%u" : "%s", full_name, i);
rdev = makedev(major, minor + (i - start) * increment);
if (mknod(full_name_inc, mode, rdev) < 0) {
bb_perror_msg("line %d: can't create node %s", linenum, full_name_inc);
ret = EXIT_FAILURE;
} else if (chown(full_name_inc, uid, gid) < 0) {
bb_perror_msg("line %d: can't chown %s", linenum, full_name_inc);
ret = EXIT_FAILURE;
} else if (chmod(full_name_inc, mode) < 0) {
bb_perror_msg("line %d: can't chmod %s", linenum, full_name_inc);
ret = EXIT_FAILURE;
}
}
free(full_name_inc);
}
}
if (ENABLE_FEATURE_CLEAN_UP)
config_close(parser);
return ret;
}
#else
# error makedevs configuration error, either leaf or table must be selected
#endif
|
