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226 lines
5.1 KiB
C
226 lines
5.1 KiB
C
/* vi: set sw=4 ts=4: */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/sysmacros.h> /* major() and minor() */
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#include "busybox.h"
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#ifdef CONFIG_FEATURE_MAKEDEVS_LEAF
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/*
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* public domain -- Dave 'Kill a Cop' Cinege <dcinege@psychosis.com>
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*
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* makedevs
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* Make ranges of device files quickly.
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* known bugs: can't deal with alpha ranges
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*/
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int makedevs_main(int argc, char **argv)
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{
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mode_t mode;
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char *basedev, *type, *nodname, buf[255];
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int Smajor, Sminor, S, E;
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if (argc < 7 || *argv[1]=='-')
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bb_show_usage();
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basedev = argv[1];
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type = argv[2];
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Smajor = atoi(argv[3]);
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Sminor = atoi(argv[4]);
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S = atoi(argv[5]);
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E = atoi(argv[6]);
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nodname = argc == 8 ? basedev : buf;
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mode = 0660;
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switch (type[0]) {
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case 'c':
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mode |= S_IFCHR;
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break;
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case 'b':
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mode |= S_IFBLK;
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break;
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case 'f':
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mode |= S_IFIFO;
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break;
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default:
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bb_show_usage();
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}
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while (S <= E) {
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int sz;
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sz = snprintf(buf, sizeof(buf), "%s%d", basedev, S);
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if(sz<0 || sz>=sizeof(buf)) /* libc different */
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bb_error_msg_and_die("%s too large", basedev);
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/* if mode != S_IFCHR and != S_IFBLK third param in mknod() ignored */
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if (mknod(nodname, mode, makedev(Smajor, Sminor)))
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bb_error_msg("Failed to create: %s", nodname);
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if (nodname == basedev) /* ex. /dev/hda - to /dev/hda1 ... */
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nodname = buf;
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S++;
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Sminor++;
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}
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return 0;
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}
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#elif defined CONFIG_FEATURE_MAKEDEVS_TABLE
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Library General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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*/
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static const struct option makedevs_long_options[] = {
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{"root", 1, NULL, 'r'},
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{0, 0, 0, 0}
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};
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extern int makedevs_main(int argc, char **argv)
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{
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FILE *table;
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int opt;
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char *rootdir = "./";
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char *line;
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int ret = EXIT_SUCCESS;
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bb_opt_complementaly = "d~r";
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bb_applet_long_options = makedevs_long_options;
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opt = bb_getopt_ulflags(argc, argv, "d:r:", &rootdir, &rootdir);
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if (optind + 1 == argc) {
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table = bb_xfopen(argv[optind], "r");
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} else {
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table = stdin;
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}
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if (chdir(rootdir) == -1) {
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bb_perror_msg_and_die("Couldnt chdor to %s", rootdir);
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}
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umask(0);
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while ((line = bb_get_chomped_line_from_file(table))) {
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char type;
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unsigned int mode = 0755;
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unsigned int major = 0;
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unsigned int minor = 0;
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unsigned int count = 0;
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unsigned int increment = 0;
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unsigned int start = 0;
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char name[41];
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char user[41];
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char group[41];
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char *full_name;
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uid_t uid;
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gid_t gid;
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if ((2 > sscanf(line, "%40s %c %o %40s %40s %u %u %u %u %u", name,
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&type, &mode, user, group, &major,
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&minor, &start, &increment, &count)) ||
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((major | minor | start | count | increment) > 255)) {
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bb_error_msg("Ignoring invalid line\n%s\n", line);
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ret = EXIT_FAILURE;
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continue;
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}
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if (name[0] == '#') {
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continue;
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}
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if (group) {
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gid = get_ug_id(group, my_getgrnam);
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} else {
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gid = getgid();
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}
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if (user) {
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uid = get_ug_id(user, my_getpwnam);
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} else {
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uid = getuid();
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}
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full_name = concat_path_file(rootdir, name);
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if (type == 'd') {
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bb_make_directory(full_name, mode | S_IFDIR, 0);
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if (chown(full_name, uid, gid) == -1) {
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bb_perror_msg("chown failed for %s", full_name);
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ret = EXIT_FAILURE;
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goto loop;
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}
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} else {
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dev_t rdev;
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if (type == 'p') {
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mode |= S_IFIFO;
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}
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else if (type == 'c') {
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mode |= S_IFCHR;
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}
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else if (type == 'b') {
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mode |= S_IFBLK;
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} else {
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bb_error_msg("Unsupported file type %c", type);
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ret = EXIT_FAILURE;
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goto loop;
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}
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if (count > 0) {
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int i;
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char *full_name_inc;
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full_name_inc = xmalloc(strlen(full_name) + 4);
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for (i = start; i < count; i++) {
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sprintf(full_name_inc, "%s%d", full_name, i);
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rdev = (major << 8) + minor + (i * increment - start);
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if (mknod(full_name_inc, mode, rdev) == -1) {
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bb_perror_msg("Couldnt create node %s", full_name_inc);
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ret = EXIT_FAILURE;
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}
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else if (chown(full_name_inc, uid, gid) == -1) {
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bb_perror_msg("chown failed for %s", full_name_inc);
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ret = EXIT_FAILURE;
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}
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}
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free(full_name_inc);
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} else {
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rdev = (major << 8) + minor;
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if (mknod(full_name, mode, rdev) == -1) {
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bb_perror_msg("Couldnt create node %s", full_name);
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ret = EXIT_FAILURE;
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}
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else if (chown(full_name, uid, gid) == -1) {
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bb_perror_msg("chown failed for %s", full_name);
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ret = EXIT_FAILURE;
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}
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}
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}
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loop:
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free(line);
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free(full_name);
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}
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fclose(table);
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return 0;
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}
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#else
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# error makdedevs configuration error, either leaf or table must be selected
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#endif
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