/*
* 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 <unistd.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 */
-/* 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 unsigned long flags;
-static void serror(const char *s, ...) __attribute__ ((noreturn));
+static void serror(const char *s, ...) ATTRIBUTE_NORETURN;
static void serror(const char *s, ...)
{
va_start(ap, s);
- if (use_syslog) {
+ if (flags & 1) {
openlog(bb_applet_name, 0, LOG_LOCAL0);
vsyslog(LOG_ERR, s, ap);
closelog();
bb_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;
const char *fname = "/etc/mactab";
char *line;
int ctl_sk;
- int opt;
int if_index = 1;
mactable_t *ch;
-
- while ((opt = getopt(argc, argv, "c:s")) != -1) {
- switch (opt) {
- case 'c':
- fname = optarg;
- break;
- case 's':
- use_syslog = 1;
- break;
- default:
- bb_show_usage();
- }
- }
+ flags = bb_getopt_ulflags(argc, argv, "sc:", &fname);
if ((argc - optind) & 1)
bb_show_usage();
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->ifname = bb_xstrndup(line_ptr, name_length);
while (clist) {
struct ifreq ifr;
- bzero(&ifr, sizeof(struct ifreq));
+ memset(&ifr, 0, sizeof(struct ifreq));
if_index++;
ifr.ifr_ifindex = if_index;