X-Git-Url: https://git.librecmc.org/?a=blobdiff_plain;f=miscutils%2Fmakedevs.c;h=1f88f34288437c1e5daf4cba2193cf308d886776;hb=bfc3d82256c45fb1e6e04ca85fac8a65b34b72a1;hp=691236e298694ff6c2da489792b1dc94ca861e71;hpb=cc8ed39b240180b58810784f844e253263594ac3;p=oweals%2Fbusybox.git diff --git a/miscutils/makedevs.c b/miscutils/makedevs.c index 691236e29..1f88f3428 100644 --- a/miscutils/makedevs.c +++ b/miscutils/makedevs.c @@ -1,95 +1,231 @@ +/* vi: set sw=4 ts=4: */ /* * public domain -- Dave 'Kill a Cop' Cinege - * + * * makedevs - * Make ranges of device files quickly. + * Make ranges of device files quickly. * known bugs: can't deal with alpha ranges */ - -#include "internal.h" -#include -#include -#include -#include -#include -#include -#include - -const char makedevs_usage[] = -"makedevs 0.01 -- Create an entire range of device files\n\n" -"\tmakedevs /dev/ttyS c 4 64 0 63 (ttyS0-ttyS63)\n" -"\tmakedevs /dev/hda b 3 0 0 8 s (hda,hda1-hda8)\n"; - -int -makedevs_main(struct FileInfo * i, int argc, char * * argv) + +#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(); -const char *basedev = argv[1]; -const char *type = argv[2]; -int major = atoi(argv[3]); -int Sminor = atoi(argv[4]); -int S = atoi(argv[5]); -int E = atoi(argv[6]); -int sbase = argc == 8 ? 1 : 0; + 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_t mode = 0; -dev_t dev = 0; -char devname[255]; -char buf[255]; + mode = 0660; switch (type[0]) { - case 'c': - mode = S_IFCHR; break; - case 'b': - mode = S_IFBLK; break; - case 'f': - mode = S_IFIFO; break; - default: - usage(makedevs_usage); - return 2; - } - mode |= 0660; - - while ( S <= E ) { - - if (type[0] != 'f') - dev = (major << 8) | Sminor; - strcpy(devname, basedev); - - if (sbase == 0) { - sprintf(buf, "%d", S); - strcat(devname, buf); + 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=\n"); + } + + while ((line = xmalloc_getline(table))) { + char type; + unsigned int mode = 0755; + unsigned int major = 0; + unsigned int minor = 0; + unsigned int count = 0; + unsigned int increment = 0; + unsigned int 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("line %d invalid: '%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 ((mode != -1) && (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 ((mode != -1) && (chmod(full_name, mode) < 0)){ + bb_perror_msg("line %d: chmod failed for %s", linenum, full_name); + ret = EXIT_FAILURE; + goto loop; + } } else { - sbase = 0; + 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) { + int 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 ((mode != -1) && (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 ((mode != -1) && (chmod(full_name, mode) < 0)){ + bb_perror_msg("line %d: chmod failed for %s", linenum, full_name); + ret = EXIT_FAILURE; + } + } } - - if (mknod (devname, mode, dev)) - printf("Failed to create: %s\n", devname); - - S++; Sminor++; +loop: + free(line); + free(full_name); } + fclose(table); -return 0; + return ret; } -/* -And this is what this program replaces. The shell is too slow! - -makedev () { -local basedev=$1; local S=$2; local E=$3 -local major=$4; local Sminor=$5; local type=$6 -local sbase=$7 - - if [ ! "$sbase" = "" ]; then - mknod "$basedev" $type $major $Sminor - S=`expr $S + 1` - Sminor=`expr $Sminor + 1` - fi - - while [ $S -le $E ]; do - mknod "$basedev$S" $type $major $Sminor - S=`expr $S + 1` - Sminor=`expr $Sminor + 1` - done -} -*/ +#else +# error makedevs configuration error, either leaf or table must be selected +#endif