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 232