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authorErik Andersen2000-02-08 19:58:47 +0000
committerErik Andersen2000-02-08 19:58:47 +0000
commite49d5ecbbe51718fa925b6890a735e5937cc2aa2 (patch)
treec90bda10731ad9333ce3b404f993354c9fc104b8 /hostname.c
parentc0bf817bbc5c7867fbe8fb76d5c39f8ee802692f (diff)
downloadbusybox-e49d5ecbbe51718fa925b6890a735e5937cc2aa2.zip
busybox-e49d5ecbbe51718fa925b6890a735e5937cc2aa2.tar.gz
Some formatting updates (ran the code through indent)
-Erik
Diffstat (limited to 'hostname.c')
-rw-r--r--hostname.c193
1 files changed, 100 insertions, 93 deletions
diff --git a/hostname.c b/hostname.c
index 68a5609..8cc334d 100644
--- a/hostname.c
+++ b/hostname.c
@@ -1,5 +1,6 @@
+/* vi: set sw=4 ts=4: */
/*
- * $Id: hostname.c,v 1.6 2000/02/07 05:29:42 erik Exp $
+ * $Id: hostname.c,v 1.7 2000/02/08 19:58:47 erik Exp $
* Mini hostname implementation for busybox
*
* Copyright (C) 1999 by Randolph Chung <tausq@debian.org>
@@ -29,110 +30,116 @@
#include <unistd.h>
#include <stdio.h>
-static const char* hostname_usage =
-"hostname [OPTION] {hostname | -F file}\n\n"
-"Get 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";
+static const char *hostname_usage =
+ "hostname [OPTION] {hostname | -F file}\n\n"
+ "Get 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";
void do_sethostname(char *s, int isfile)
{
- FILE *f;
- char buf[255];
-
- if (!s) return;
- if (!isfile) {
- if (sethostname(s, strlen(s)) < 0) {
- if (errno == EPERM)
- fprintf(stderr, "hostname: you must be root to change the hostname\n");
- else
- perror("sethostname");
- exit(1);
- }
- } else {
- if ((f = fopen(s, "r")) == NULL) {
- perror(s);
- exit(1);
+ FILE *f;
+ char buf[255];
+
+ if (!s)
+ return;
+ if (!isfile) {
+ if (sethostname(s, strlen(s)) < 0) {
+ if (errno == EPERM)
+ fprintf(stderr,
+ "hostname: you must be root to change the hostname\n");
+ else
+ perror("sethostname");
+ 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);
- }
+ 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);
+ }
+ }
}
- }
}
int hostname_main(int argc, char **argv)
{
- int opt_short = 0;
- int opt_domain = 0;
- int opt_ip = 0;
- struct hostent *h;
- char *filename = NULL;
- char buf[255];
- char *s = NULL;
-
- if (argc < 1) usage(hostname_usage);
+ int opt_short = 0;
+ int opt_domain = 0;
+ int opt_ip = 0;
+ struct hostent *h;
+ char *filename = NULL;
+ char buf[255];
+ char *s = NULL;
- while (--argc > 0 && **(++argv) == '-') {
- while (*(++(*argv))) {
- switch (**argv) {
- case 's':
- opt_short = 1;
- break;
- case 'i':
- opt_ip = 1;
- break;
- case 'd':
- opt_domain = 1;
- break;
- case 'F':
- filename = optarg;
- if (--argc == 0) {
- usage(hostname_usage);
- }
- filename = *(++argv);
- break;
- default:
+ if (argc < 1)
usage(hostname_usage);
- }
- if (filename!=NULL)
- break;
+
+ while (--argc > 0 && **(++argv) == '-') {
+ while (*(++(*argv))) {
+ switch (**argv) {
+ case 's':
+ opt_short = 1;
+ break;
+ case 'i':
+ opt_ip = 1;
+ break;
+ case 'd':
+ opt_domain = 1;
+ break;
+ case 'F':
+ filename = optarg;
+ if (--argc == 0) {
+ usage(hostname_usage);
+ }
+ filename = *(++argv);
+ break;
+ default:
+ usage(hostname_usage);
+ }
+ if (filename != NULL)
+ break;
+ }
}
- }
- if (argc >= 1) {
- do_sethostname(*argv, 0);
- } else if (filename!=NULL) {
- do_sethostname(filename, 1);
- } else {
- gethostname(buf, 255);
- if (opt_short) {
- s = strchr(buf, '.');
- if (!s) s = buf; *s = 0;
- printf("%s\n", buf);
- } else if (opt_domain) {
- s = strchr(buf, '.');
- printf("%s\n", (s ? s+1 : ""));
- } else if (opt_ip) {
- h = gethostbyname(buf);
- if (!h) {
- printf("Host not found\n");
- exit(1);
- }
- printf("%s\n", inet_ntoa(*(struct in_addr *)(h->h_addr)));
- } else {
- printf("%s\n", buf);
- }
- }
- exit( 0);
+ if (argc >= 1) {
+ do_sethostname(*argv, 0);
+ } else if (filename != NULL) {
+ do_sethostname(filename, 1);
+ } else {
+ gethostname(buf, 255);
+ if (opt_short) {
+ s = strchr(buf, '.');
+ if (!s)
+ s = buf;
+ *s = 0;
+ printf("%s\n", buf);
+ } else if (opt_domain) {
+ s = strchr(buf, '.');
+ printf("%s\n", (s ? s + 1 : ""));
+ } else if (opt_ip) {
+ h = gethostbyname(buf);
+ if (!h) {
+ printf("Host not found\n");
+ exit(1);
+ }
+ printf("%s\n", inet_ntoa(*(struct in_addr *) (h->h_addr)));
+ } else {
+ printf("%s\n", buf);
+ }
+ }
+ exit(0);
}
-