| /* 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 |
| */ |
| |
| #include "libbb.h" |
| |
| #if ENABLE_FEATURE_MAKEDEVS_LEAF |
| 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[255]; |
| int Smajor, Sminor, S, E; |
| |
| if (argc < 7 || *argv[1]=='-') |
| bb_show_usage(); |
| |
| basedev = argv[1]; |
| type = argv[2]; |
| Smajor = xatoi_u(argv[3]); |
| Sminor = xatoi_u(argv[4]); |
| S = xatoi_u(argv[5]); |
| E = xatoi_u(argv[6]); |
| nodname = argc == 8 ? 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) { |
| int sz; |
| |
| sz = snprintf(buf, sizeof(buf), "%s%d", basedev, S); |
| if (sz < 0 || sz >= sizeof(buf)) /* libc different */ |
| bb_error_msg_and_die("%s too large", basedev); |
| |
| /* if mode != S_IFCHR and != S_IFBLK third param in mknod() ignored */ |
| |
| if (mknod(nodname, mode, makedev(Smajor, Sminor))) |
| bb_error_msg("failed to 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 the GPL v2 or later, see the file LICENSE in this tarball. */ |
| |
| int makedevs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int makedevs_main(int argc, char **argv) |
| { |
| FILE *table = stdin; |
| char *rootdir = NULL; |
| char *line = NULL; |
| int linenum = 0; |
| int ret = EXIT_SUCCESS; |
| |
| getopt32(argv, "d:", &line); |
| if (line) |
| table = xfopen(line, "r"); |
| |
| if (optind >= argc || (rootdir=argv[optind])==NULL) { |
| bb_error_msg_and_die("root directory not specified"); |
| } |
| |
| xchdir(rootdir); |
| |
| umask(0); |
| |
| printf("rootdir=%s\n", rootdir); |
| if (line) { |
| printf("table='%s'\n", line); |
| } else { |
| printf("table=<stdin>\n"); |
| } |
| |
| while ((line = xmalloc_fgetline(table)) != NULL) { |
| 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; |
| uid_t uid; |
| gid_t gid; |
| |
| linenum++; |
| |
| if ((2 > sscanf(line, "%40s %c %o %40s %40s %u %u %u %u %u", name, |
| &type, &mode, user, group, &major, |
| &minor, &start, &increment, &count)) || |
| ((major | minor | start | count | increment) > 255)) |
| { |
| if (*line=='\0' || *line=='#' || isspace(*line)) |
| continue; |
| bb_error_msg("invalid line %d: '%s'", linenum, line); |
| ret = EXIT_FAILURE; |
| continue; |
| } |
| if (name[0] == '#') { |
| continue; |
| } |
| |
| gid = (*group) ? get_ug_id(group, xgroup2gid) : getgid(); |
| uid = (*user) ? get_ug_id(user, xuname2uid) : getuid(); |
| full_name = concat_path_file(rootdir, name); |
| |
| if (type == 'd') { |
| bb_make_directory(full_name, mode | S_IFDIR, FILEUTILS_RECUR); |
| if (chown(full_name, uid, gid) == -1) { |
| bb_perror_msg("line %d: chown failed for %s", linenum, full_name); |
| ret = EXIT_FAILURE; |
| goto loop; |
| } |
| if (chmod(full_name, mode) < 0) { |
| bb_perror_msg("line %d: chmod failed for %s", linenum, full_name); |
| ret = EXIT_FAILURE; |
| goto loop; |
| } |
| } 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; |
| goto loop; |
| } |
| if (chown(full_name, uid, gid) == -1) { |
| bb_perror_msg("line %d: chown failed for %s", linenum, full_name); |
| ret = EXIT_FAILURE; |
| goto loop; |
| } |
| if (chmod(full_name, mode) < 0) { |
| bb_perror_msg("line %d: chmod failed for %s", linenum, full_name); |
| ret = EXIT_FAILURE; |
| goto loop; |
| } |
| } else { |
| dev_t rdev; |
| |
| 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; |
| goto loop; |
| } |
| |
| if (count > 0) { |
| unsigned i; |
| char *full_name_inc; |
| |
| full_name_inc = xmalloc(strlen(full_name) + 4); |
| for (i = start; i < count; i++) { |
| sprintf(full_name_inc, "%s%d", full_name, i); |
| rdev = makedev(major, minor + (i * increment - start)); |
| if (mknod(full_name_inc, mode, rdev) == -1) { |
| bb_perror_msg("line %d: cannot create node %s", linenum, full_name_inc); |
| ret = EXIT_FAILURE; |
| } |
| else if (chown(full_name_inc, uid, gid) == -1) { |
| bb_perror_msg("line %d: chown failed for %s", linenum, full_name_inc); |
| ret = EXIT_FAILURE; |
| } |
| if (chmod(full_name_inc, mode) < 0) { |
| bb_perror_msg("line %d: chmod failed for %s", linenum, full_name_inc); |
| ret = EXIT_FAILURE; |
| } |
| } |
| free(full_name_inc); |
| } else { |
| rdev = makedev(major, minor); |
| if (mknod(full_name, mode, rdev) == -1) { |
| bb_perror_msg("line %d: cannot create node %s", linenum, full_name); |
| ret = EXIT_FAILURE; |
| } |
| else if (chown(full_name, uid, gid) == -1) { |
| bb_perror_msg("line %d: chown failed for %s", linenum, full_name); |
| ret = EXIT_FAILURE; |
| } |
| if (chmod(full_name, mode) < 0) { |
| bb_perror_msg("line %d: chmod failed for %s", linenum, full_name); |
| ret = EXIT_FAILURE; |
| } |
| } |
| } |
| loop: |
| free(line); |
| free(full_name); |
| } |
| fclose(table); |
| |
| return ret; |
| } |
| |
| #else |
| # error makedevs configuration error, either leaf or table must be selected |
| #endif |