[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * public domain -- Dave 'Kill a Cop' Cinege <dcinege@psychosis.com>
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| 4 | *
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| 5 | * makedevs
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| 6 | * Make ranges of device files quickly.
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| 7 | * known bugs: can't deal with alpha ranges
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| 8 | */
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| 9 |
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| 10 | #include "busybox.h"
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| 11 | #include <stdio.h>
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| 12 | #include <stdlib.h>
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| 13 | #include <string.h>
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| 14 | #include <fcntl.h>
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| 15 | #include <time.h>
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| 16 | #include <ctype.h>
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| 17 | #include <unistd.h>
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| 18 | #include <sys/types.h>
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| 19 | #include <sys/sysmacros.h> /* major() and minor() */
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| 20 |
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| 21 | #ifdef CONFIG_FEATURE_MAKEDEVS_LEAF
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| 22 | int makedevs_main(int argc, char **argv)
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| 23 | {
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| 24 | mode_t mode;
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| 25 | char *basedev, *type, *nodname, buf[255];
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| 26 | int Smajor, Sminor, S, E;
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| 27 |
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| 28 | if (argc < 7 || *argv[1]=='-')
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| 29 | bb_show_usage();
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| 30 |
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| 31 | basedev = argv[1];
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| 32 | type = argv[2];
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| 33 | Smajor = atoi(argv[3]);
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| 34 | Sminor = atoi(argv[4]);
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| 35 | S = atoi(argv[5]);
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| 36 | E = atoi(argv[6]);
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| 37 | nodname = argc == 8 ? basedev : buf;
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| 38 |
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| 39 | mode = 0660;
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| 40 |
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| 41 | switch (type[0]) {
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| 42 | case 'c':
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| 43 | mode |= S_IFCHR;
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| 44 | break;
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| 45 | case 'b':
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| 46 | mode |= S_IFBLK;
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| 47 | break;
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| 48 | case 'f':
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| 49 | mode |= S_IFIFO;
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| 50 | break;
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| 51 | default:
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| 52 | bb_show_usage();
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| 53 | }
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| 54 |
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| 55 | while (S <= E) {
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| 56 | int sz;
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| 57 |
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| 58 | sz = snprintf(buf, sizeof(buf), "%s%d", basedev, S);
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| 59 | if(sz<0 || sz>=sizeof(buf)) /* libc different */
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| 60 | bb_error_msg_and_die("%s too large", basedev);
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| 61 |
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| 62 | /* if mode != S_IFCHR and != S_IFBLK third param in mknod() ignored */
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| 63 |
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| 64 | if (mknod(nodname, mode, makedev(Smajor, Sminor)))
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| 65 | bb_error_msg("Failed to create: %s", nodname);
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| 66 |
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| 67 | if (nodname == basedev) /* ex. /dev/hda - to /dev/hda1 ... */
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| 68 | nodname = buf;
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| 69 | S++;
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| 70 | Sminor++;
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| 71 | }
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| 72 |
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| 73 | return 0;
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| 74 | }
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| 75 |
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| 76 | #elif defined CONFIG_FEATURE_MAKEDEVS_TABLE
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| 77 |
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| 78 | /* Licensed under the GPL v2 or later, see the file LICENSE in this tarball. */
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| 79 |
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| 80 | int makedevs_main(int argc, char **argv)
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| 81 | {
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| 82 | FILE *table = stdin;
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| 83 | char *rootdir = NULL;
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| 84 | char *line = NULL;
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| 85 | int linenum = 0;
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| 86 | int ret = EXIT_SUCCESS;
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| 87 |
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| 88 | unsigned long flags;
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| 89 | flags = bb_getopt_ulflags(argc, argv, "d:", &line);
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| 90 | if (line)
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| 91 | table = bb_xfopen(line, "r");
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| 92 |
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| 93 | if (optind >= argc || (rootdir=argv[optind])==NULL) {
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| 94 | bb_error_msg_and_die("root directory not specified");
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| 95 | }
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| 96 |
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| 97 | bb_xchdir(rootdir);
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| 98 |
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| 99 | umask(0);
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| 100 |
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| 101 | printf("rootdir=%s\n", rootdir);
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| 102 | if (line) {
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| 103 | printf("table='%s'\n", line);
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| 104 | } else {
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| 105 | printf("table=<stdin>\n");
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| 106 | }
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| 107 |
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| 108 | while ((line = bb_get_chomped_line_from_file(table))) {
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| 109 | char type;
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| 110 | unsigned int mode = 0755;
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| 111 | unsigned int major = 0;
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| 112 | unsigned int minor = 0;
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| 113 | unsigned int count = 0;
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| 114 | unsigned int increment = 0;
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| 115 | unsigned int start = 0;
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| 116 | char name[41];
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| 117 | char user[41];
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| 118 | char group[41];
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| 119 | char *full_name;
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| 120 | uid_t uid;
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| 121 | gid_t gid;
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| 122 |
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| 123 | linenum++;
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| 124 |
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| 125 | if ((2 > sscanf(line, "%40s %c %o %40s %40s %u %u %u %u %u", name,
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| 126 | &type, &mode, user, group, &major,
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| 127 | &minor, &start, &increment, &count)) ||
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| 128 | ((major | minor | start | count | increment) > 255))
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| 129 | {
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| 130 | if (*line=='\0' || *line=='#' || isspace(*line))
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| 131 | continue;
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| 132 | bb_error_msg("line %d invalid: '%s'\n", linenum, line);
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| 133 | ret = EXIT_FAILURE;
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| 134 | continue;
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| 135 | }
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| 136 | if (name[0] == '#') {
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| 137 | continue;
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| 138 | }
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| 139 |
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| 140 | gid = (*group) ? get_ug_id(group, bb_xgetgrnam) : getgid();
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| 141 | uid = (*user) ? get_ug_id(user, bb_xgetpwnam) : getuid();
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| 142 | full_name = concat_path_file(rootdir, name);
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| 143 |
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| 144 | if (type == 'd') {
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| 145 | bb_make_directory(full_name, mode | S_IFDIR, FILEUTILS_RECUR);
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| 146 | if (chown(full_name, uid, gid) == -1) {
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| 147 | bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
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| 148 | ret = EXIT_FAILURE;
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| 149 | goto loop;
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| 150 | }
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| 151 | if ((mode != -1) && (chmod(full_name, mode) < 0)){
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| 152 | bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
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| 153 | ret = EXIT_FAILURE;
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| 154 | goto loop;
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| 155 | }
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| 156 | } else if (type == 'f') {
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| 157 | struct stat st;
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| 158 | if ((stat(full_name, &st) < 0 || !S_ISREG(st.st_mode))) {
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| 159 | bb_perror_msg("line %d: regular file '%s' does not exist", linenum, full_name);
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| 160 | ret = EXIT_FAILURE;
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| 161 | goto loop;
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| 162 | }
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| 163 | if (chown(full_name, uid, gid) == -1) {
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| 164 | bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
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| 165 | ret = EXIT_FAILURE;
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| 166 | goto loop;
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| 167 | }
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| 168 | if ((mode != -1) && (chmod(full_name, mode) < 0)){
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| 169 | bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
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| 170 | ret = EXIT_FAILURE;
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| 171 | goto loop;
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| 172 | }
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| 173 | } else
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| 174 | {
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| 175 | dev_t rdev;
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| 176 |
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| 177 | if (type == 'p') {
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| 178 | mode |= S_IFIFO;
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| 179 | }
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| 180 | else if (type == 'c') {
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| 181 | mode |= S_IFCHR;
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| 182 | }
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| 183 | else if (type == 'b') {
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| 184 | mode |= S_IFBLK;
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| 185 | } else {
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| 186 | bb_error_msg("line %d: unsupported file type %c", linenum, type);
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| 187 | ret = EXIT_FAILURE;
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| 188 | goto loop;
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| 189 | }
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| 190 |
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| 191 | if (count > 0) {
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| 192 | int i;
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| 193 | char *full_name_inc;
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| 194 |
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| 195 | full_name_inc = xmalloc(strlen(full_name) + 4);
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| 196 | for (i = start; i < count; i++) {
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| 197 | sprintf(full_name_inc, "%s%d", full_name, i);
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| 198 | rdev = (major << 8) + minor + (i * increment - start);
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| 199 | if (mknod(full_name_inc, mode, rdev) == -1) {
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| 200 | bb_perror_msg("line %d: could not create node %s", linenum, full_name_inc);
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| 201 | ret = EXIT_FAILURE;
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| 202 | }
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| 203 | else if (chown(full_name_inc, uid, gid) == -1) {
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| 204 | bb_perror_msg("line %d: chown failed for %s", linenum, full_name_inc);
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| 205 | ret = EXIT_FAILURE;
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| 206 | }
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| 207 | if ((mode != -1) && (chmod(full_name_inc, mode) < 0)){
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| 208 | bb_perror_msg("line %d: chmod failed for %s", linenum, full_name_inc);
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| 209 | ret = EXIT_FAILURE;
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| 210 | }
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| 211 | }
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| 212 | free(full_name_inc);
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| 213 | } else {
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| 214 | rdev = (major << 8) + minor;
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| 215 | if (mknod(full_name, mode, rdev) == -1) {
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| 216 | bb_perror_msg("line %d: could not create node %s", linenum, full_name);
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| 217 | ret = EXIT_FAILURE;
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| 218 | }
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| 219 | else if (chown(full_name, uid, gid) == -1) {
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| 220 | bb_perror_msg("line %d: chown failed for %s", linenum, full_name);
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| 221 | ret = EXIT_FAILURE;
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| 222 | }
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| 223 | if ((mode != -1) && (chmod(full_name, mode) < 0)){
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| 224 | bb_perror_msg("line %d: chmod failed for %s", linenum, full_name);
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| 225 | ret = EXIT_FAILURE;
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| 226 | }
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| 227 | }
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| 228 | }
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| 229 | loop:
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| 230 | free(line);
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| 231 | free(full_name);
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| 232 | }
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| 233 | fclose(table);
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| 234 |
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| 235 | return ret;
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| 236 | }
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| 237 |
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| 238 | #else
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| 239 | # error makedevs configuration error, either leaf or table must be selected
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| 240 | #endif
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