+/* vi: set sw=4 ts=4: */
/*
* nameif.c - Naming Interfaces based on MAC address for busybox.
*
- * Writen 2000 by Andi Kleen.
+ * Written 2000 by Andi Kleen.
* Busybox port 2002 by Nick Fedchik <nick@fedchik.org.ua>
- * Glenn McGrath <bug1@optushome.com.au>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307 USA
+ * Glenn McGrath <bug1@iinet.net.au>
*
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
-
-#include <sys/syslog.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <errno.h>
-#include <getopt.h>
-#include <stdlib.h>
-#include <string.h>
+#include "busybox.h"
+#include <syslog.h>
#include <net/if.h>
#include <netinet/ether.h>
-#include "busybox.h"
+
+/* Older versions of net/if.h do not appear to define IF_NAMESIZE. */
+#ifndef IF_NAMESIZE
+# ifdef IFNAMSIZ
+# define IF_NAMESIZE IFNAMSIZ
+# else
+# define IF_NAMESIZE 16
+# endif
+#endif
/* take from linux/sockios.h */
-#define SIOCSIFNAME 0x8923 /* set interface name */
+#define SIOCSIFNAME 0x8923 /* set interface name */
-/* Octets in one ethernet addr, from <linux/if_ether.h> */
+/* Octets in one Ethernet addr, from <linux/if_ether.h> */
#define ETH_ALEN 6
#ifndef ifr_newname
struct ether_addr *mac;
} mactable_t;
-static unsigned char use_syslog;
-
-static void serror(const char *s, ...) __attribute__ ((noreturn));
-
-static void serror(const char *s, ...)
-{
- va_list ap;
-
- va_start(ap, s);
-
- if (use_syslog) {
- openlog(applet_name, 0, LOG_LOCAL0);
- vsyslog(LOG_ERR, s, ap);
- closelog();
- } else {
- verror_msg(s, ap);
- putc('\n', stderr);
- }
-
- va_end(ap);
-
- exit(EXIT_FAILURE);
-}
-
/* Check ascii str_macaddr, convert and copy to *mac */
-struct ether_addr *cc_macaddr(char *str_macaddr)
+static struct ether_addr *cc_macaddr(const char *str_macaddr)
{
struct ether_addr *lmac, *mac;
lmac = ether_aton(str_macaddr);
if (lmac == NULL)
- serror("cannot parse MAC %s", str_macaddr);
+ bb_error_msg_and_die("cannot parse MAC %s", str_macaddr);
mac = xmalloc(ETH_ALEN);
memcpy(mac, lmac, ETH_ALEN);
return mac;
}
+int nameif_main(int argc, char **argv);
int nameif_main(int argc, char **argv)
{
mactable_t *clist = NULL;
const char *fname = "/etc/mactab";
char *line;
int ctl_sk;
- int opt;
int if_index = 1;
mactable_t *ch;
- static struct option opts[] = {
- {"syslog", 0, NULL, 's'},
- {"configfile", 1, NULL, 'c'},
- {NULL},
- };
-
- while ((opt = getopt_long(argc, argv, "c:s", opts, NULL)) != -1) {
- switch (opt) {
- case 'c':
- fname = optarg;
- break;
- case 's':
- use_syslog = 1;
- break;
- default:
- show_usage();
- }
+ if (1 & getopt32(argc, argv, "sc:", &fname)) {
+ openlog(applet_name, 0, LOG_LOCAL0);
+ logmode = LOGMODE_SYSLOG;
}
if ((argc - optind) & 1)
- show_usage();
+ bb_show_usage();
if (optind < argc) {
char **a = argv + optind;
while (*a) {
-
if (strlen(*a) > IF_NAMESIZE)
- serror("interface name `%s' too long", *a);
- ch = xcalloc(1, sizeof(mactable_t));
+ bb_error_msg_and_die("interface name '%s' "
+ "too long", *a);
+ ch = xzalloc(sizeof(mactable_t));
ch->ifname = xstrdup(*a++);
ch->mac = cc_macaddr(*a++);
if (clist)
} else {
ifh = xfopen(fname, "r");
- while ((line = get_line_from_file(ifh)) != NULL) {
+ while ((line = xmalloc_fgets(ifh)) != NULL) {
char *line_ptr;
size_t name_length;
line_ptr = line + strspn(line, " \t");
- if ((line_ptr[0] == '#') || (line_ptr[0] == '\n'))
+ if ((line_ptr[0] == '#') || (line_ptr[0] == '\n')) {
+ free(line);
continue;
+ }
name_length = strcspn(line_ptr, " \t");
- ch = xcalloc(1, sizeof(mactable_t));
+ ch = xzalloc(sizeof(mactable_t));
ch->ifname = xstrndup(line_ptr, name_length);
if (name_length > IF_NAMESIZE)
- serror("interface name `%s' too long",
- ch->ifname);
+ bb_error_msg_and_die("interface name '%s' "
+ "too long", ch->ifname);
line_ptr += name_length;
line_ptr += strspn(line_ptr, " \t");
name_length = strspn(line_ptr, "0123456789ABCDEFabcdef:");
fclose(ifh);
}
- if ((ctl_sk = socket(PF_INET, SOCK_DGRAM, 0)) == -1)
- serror("socket: %m");
+ ctl_sk = xsocket(PF_INET, SOCK_DGRAM, 0);
while (clist) {
struct ifreq ifr;
- bzero(&ifr, sizeof(struct ifreq));
+ memset(&ifr, 0, sizeof(struct ifreq));
if_index++;
ifr.ifr_ifindex = if_index;
strcpy(ifr.ifr_newname, ch->ifname);
if (ioctl(ctl_sk, SIOCSIFNAME, &ifr) < 0)
- serror("cannot change ifname %s to %s: %m",
+ bb_perror_msg_and_die("cannot change ifname %s to %s",
ifr.ifr_name, ch->ifname);
/* Remove list entry of renamed interface */
}
if (ch->next != NULL)
(ch->next)->prev = ch->prev;
-#ifdef CONFIG_FEATURE_CLEAN_UP
- free(ch->ifname);
- free(ch->mac);
- free(ch);
-#endif
+ if (ENABLE_FEATURE_CLEAN_UP) {
+ free(ch->ifname);
+ free(ch->mac);
+ free(ch);
+ }
}
return 0;
projects / oweals / busybox.git / blobdiff