1 /* vi: set sw=4 ts=4: */
3 * Mini hostname implementation for busybox
5 * Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
7 * adjusted by Erik Andersen <andersen@codepoet.org> to remove
8 * use of long options and GNU getopt. Improved the usage info.
10 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
12 * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
17 static void do_sethostname(char *s, int isfile)
24 if (sethostname(s, strlen(s)) < 0) {
26 bb_error_msg_and_die(bb_msg_perm_denied_are_you_root);
27 bb_perror_msg_and_die("sethostname");
31 #define strbuf bb_common_bufsiz1
32 while (fgets(strbuf, sizeof(strbuf), f) != NULL) {
33 if (strbuf[0] == '#') {
37 do_sethostname(strbuf, 0);
39 if (ENABLE_FEATURE_CLEAN_UP)
44 int hostname_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
45 int hostname_main(int argc, char **argv)
62 getopt32(argv, "dfisF:", &hostname_str);
64 buf = safe_gethostname();
66 /* Output in desired format */
67 if (option_mask32 & OPT_dfis) {
70 hp = xgethostbyname(buf);
71 p = strchr(hp->h_name, '.');
72 if (option_mask32 & OPT_f) {
74 } else if (option_mask32 & OPT_s) {
78 } else if (option_mask32 & OPT_d) {
81 } else if (option_mask32 & OPT_i) {
82 while (hp->h_addr_list[0]) {
83 printf("%s ", inet_ntoa(*(struct in_addr *) (*hp->h_addr_list++)));
88 /* Set the hostname */
89 else if (option_mask32 & OPT_F) {
90 do_sethostname(hostname_str, 1);
92 do_sethostname(argv[0], 0);
94 /* Or if all else fails,
95 * just print the current hostname */
99 if (ENABLE_FEATURE_CLEAN_UP)