/* vi: set sw=4 ts=4: */
/*
- * $Id: hostname.c,v 1.10 2000/06/19 17:25:39 andersen Exp $
+ * $Id: hostname.c,v 1.26 2001/03/09 21:24:12 andersen Exp $
* Mini hostname implementation for busybox
*
* Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
-#include "internal.h"
+#include "busybox.h"
#include <errno.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <unistd.h>
+#include <string.h>
#include <stdio.h>
+#include <stdlib.h>
-static const char *hostname_usage =
- "hostname [OPTION] {hostname | -F file}\n"
-#ifndef BB_FEATURE_TRIVIAL_HELP
- "\nGet or set the hostname or DNS domain name. If a hostname is given\n"
- "(or a file with the -F parameter), the host name will be set.\n\n"
- "Options:\n"
- "\t-s\t\tShort\n"
-
- "\t-i\t\tAddresses for the hostname\n"
- "\t-d\t\tDNS domain name\n"
- "\t-F FILE\t\tUse the contents of FILE to specify the hostname\n"
-#endif
- ;
-
-
-void do_sethostname(char *s, int isfile)
+static void do_sethostname(char *s, int isfile)
{
FILE *f;
char buf[255];
if (!isfile) {
if (sethostname(s, strlen(s)) < 0) {
if (errno == EPERM)
- fprintf(stderr,
- "hostname: you must be root to change the hostname\n");
+ error_msg_and_die("you must be root to change the hostname");
else
- perror("sethostname");
- exit(1);
+ perror_msg_and_die("sethostname");
}
} else {
- if ((f = fopen(s, "r")) == NULL) {
- perror(s);
- exit(1);
- } else {
- fgets(buf, 255, f);
- fclose(f);
- if (buf[strlen(buf) - 1] == '\n')
- buf[strlen(buf) - 1] = 0;
- if (sethostname(buf, strlen(buf)) < 0) {
- perror("sethostname");
- exit(1);
- }
- }
+ f = xfopen(s, "r");
+ fgets(buf, 255, f);
+ fclose(f);
+ chomp(buf);
+ if (sethostname(buf, strlen(buf)) < 0)
+ perror_msg_and_die("sethostname");
}
}
char *s = NULL;
if (argc < 1)
- usage(hostname_usage);
+ show_usage();
while (--argc > 0 && **(++argv) == '-') {
while (*(++(*argv))) {
break;
case 'F':
if (--argc == 0) {
- usage(hostname_usage);
+ show_usage();
+ }
+ filename = *(++argv);
+ break;
+ case '-':
+ if (strcmp(++(*argv), "file") || --argc ==0 ) {
+ show_usage();
}
filename = *(++argv);
break;
default:
- usage(hostname_usage);
+ show_usage();
}
if (filename != NULL)
break;