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authorGlenn L McGrath2002-12-13 00:01:44 +0000
committerGlenn L McGrath2002-12-13 00:01:44 +0000
commitf03c933e473760cb3776aee8283ecb3e4bddf097 (patch)
treeba401fac3566fc280a93c7933e4c33767acd99ee
parent9130c8584783a4449b01cce2a780add080f23dd9 (diff)
downloadbusybox-f03c933e473760cb3776aee8283ecb3e4bddf097.zip
busybox-f03c933e473760cb3776aee8283ecb3e4bddf097.tar.gz
New applet, nameif by Nick Fedchik and myself.
-rw-r--r--include/applets.h3
-rw-r--r--include/usage.h13
-rw-r--r--networking/Config.in14
-rw-r--r--networking/Makefile.in1
-rw-r--r--networking/nameif.c217
5 files changed, 248 insertions, 0 deletions
diff --git a/include/applets.h b/include/applets.h
index 9257fc9..bd20530 100644
--- a/include/applets.h
+++ b/include/applets.h
@@ -368,6 +368,9 @@
#ifdef CONFIG_MV
APPLET(mv, mv_main, _BB_DIR_BIN, _BB_SUID_NEVER)
#endif
+#ifdef CONFIG_NAMEIF
+ APPLET(nameif, nameif_main, _BB_DIR_SBIN, _BB_SUID_NEVER)
+#endif
#ifdef CONFIG_NC
APPLET(nc, nc_main, _BB_DIR_USR_BIN, _BB_SUID_NEVER)
#endif
diff --git a/include/usage.h b/include/usage.h
index f484ee9..d3c1e50 100644
--- a/include/usage.h
+++ b/include/usage.h
@@ -1453,6 +1453,19 @@
#define mv_example_usage \
"$ mv /tmp/foo /bin/bar\n"
+#define nameif_trivial_usage \
+ "[OPTIONS] [{IFNAME MACADDR}]"
+#define nameif_full_usage \
+ "Nameif renaming network interface while it in the down state.\n\n" \
+ "Options:\n" \
+ "\t-c FILE\t\tUse another configuration file (default is /etc/mactab)\n" \
+ "\t-s\t\tUse syslog (LOCAL0 facility).\n" \
+ "\tIFNAME MACADDR\tnew_interface_name interface_mac_address\n"
+#define nameif_example_usage \
+ "$ nameif -s dmz0 00:A0:C9:8C:F6:3F\n" \
+ " or\n" \
+ "$ nameif -c /etc/my_mactab_file\n" \
+
#define nc_trivial_usage \
"[OPTIONS] [IP] [port]"
#define nc_full_usage \
diff --git a/networking/Config.in b/networking/Config.in
index 92467b7..b4b9462 100644
--- a/networking/Config.in
+++ b/networking/Config.in
@@ -192,6 +192,20 @@ config CONFIG_IPTUNNEL
help
Please submit a patch to add help text for this item.
+config CONFIG_NAMEIF
+ bool "nameif"
+ default n
+ help
+ nameif used to rename network interface by its MAC address.
+ Renamed interfaces MUST be in the down state.
+ It is possible to use file (default: /etc/mactab)
+ with list of new interface names and MACs.
+ Maximum interface name length: IF_NAMESIZE = 16
+ File fields are sepatated by space or tab.
+ File format:
+ # Comment
+ new_interface_name XX:XX:XX:XX:XX:XX
+
config CONFIG_NC
bool "nc"
default n
diff --git a/networking/Makefile.in b/networking/Makefile.in
index fc6a3b7..e72b001 100644
--- a/networking/Makefile.in
+++ b/networking/Makefile.in
@@ -32,6 +32,7 @@ NETWORKING-$(CONFIG_IPADDR) += ipaddr.o
NETWORKING-$(CONFIG_IPLINK) += iplink.o
NETWORKING-$(CONFIG_IPROUTE) += iproute.o
NETWORKING-$(CONFIG_IPTUNNEL) += iptunnel.o
+NETWORKING-$(CONFIG_NAMEIF) += nameif.o
NETWORKING-$(CONFIG_NC) += nc.o
NETWORKING-$(CONFIG_NETSTAT) += netstat.o
NETWORKING-$(CONFIG_NSLOOKUP) += nslookup.o
diff --git a/networking/nameif.c b/networking/nameif.c
new file mode 100644
index 0000000..1edd641
--- /dev/null
+++ b/networking/nameif.c
@@ -0,0 +1,217 @@
+/*
+ * nameif.c - Naming Interfaces based on MAC address for busybox.
+ *
+ * Writen 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
+ *
+ */
+
+#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 <net/if.h>
+#include <netinet/ether.h>
+
+#include "busybox.h"
+
+/* set interface name, from <linux/sockios.h> */
+#define SIOCSIFNAME 0x8923
+/* Octets in one ethernet addr, from <linux/if_ether.h> */
+#define ETH_ALEN 6
+
+#ifndef ifr_newname
+#define ifr_newname ifr_ifru.ifru_slave
+#endif
+
+typedef struct mactable_s {
+ struct mactable_s *next;
+ struct mactable_s **pprev;
+ char *ifname;
+ struct ether_addr *mac;
+} mactable_t;
+
+static void serror_msg_and_die(const char use_syslog, const char *s, ...)
+{
+ va_list ap;
+
+ va_start(ap, s);
+
+ if (use_syslog) {
+ openlog("nameif", 0, LOG_LOCAL0);
+ syslog(LOG_ERR, s, ap);
+ closelog();
+ } else {
+ vfprintf(stderr, s, ap);
+ putc('\n', stderr);
+ }
+
+ va_end(ap);
+
+ exit(EXIT_FAILURE);
+}
+
+int nameif_main(int argc, char **argv)
+{
+ mactable_t *clist = NULL;
+ FILE *ifh;
+ char *fname = "/etc/mactab";
+ char *line;
+ unsigned short linenum = 0;
+ unsigned char use_syslog = 0;
+ int ctl_sk = -1;
+ int opt;
+
+ 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 ((argc - optind) & 1) {
+ show_usage();
+ }
+
+ if (optind < argc) {
+ while (optind < argc) {
+ struct ether_addr *mac;
+ mactable_t *ch;
+
+ if (strlen(argv[optind]) > IF_NAMESIZE) {
+ serror_msg_and_die(use_syslog, "interface name `%s' too long", argv[optind]);
+ }
+ optind++;
+ mac = ether_aton(argv[optind]);
+ if (mac == NULL) {
+ serror_msg_and_die(use_syslog, "cannot parse MAC %s", argv[optind]);
+ }
+ ch = xcalloc(1, sizeof(mactable_t));
+ ch->ifname = strdup(argv[optind - 1]);
+ ch->mac = xcalloc(1, ETH_ALEN);
+ memcpy(ch->mac, &mac, ETH_ALEN);
+ optind++;
+ if (clist)
+ clist->pprev = &ch->next;
+ ch->next = clist;
+ ch->pprev = &clist;
+ clist = ch;
+ }
+ } else {
+ ifh = xfopen(fname, "r");
+
+ while ((line = get_line_from_file(ifh)) != NULL) {
+ struct ether_addr *mac;
+ mactable_t *ch;
+ char *line_ptr;
+ unsigned short name_length;
+
+ line_ptr = line + strspn(line, " \t");
+ if ((line_ptr[0] == '#') || (line_ptr[0] == '\n'))
+ continue;
+ name_length = strcspn(line_ptr, " \t");
+ if (name_length > IF_NAMESIZE) {
+ serror_msg_and_die(use_syslog, "interface name `%s' too long", argv[optind]);
+ }
+ ch = xcalloc(1, sizeof(mactable_t));
+ ch->ifname = strndup(line_ptr, name_length);
+ line_ptr += name_length;
+ line_ptr += strspn(line_ptr, " \t");
+ name_length = strspn(line_ptr, "0123456789ABCDEFabcdef:");
+ line_ptr[name_length] = '\0';
+ mac = ether_aton(line_ptr);
+ if (mac == NULL) {
+ serror_msg_and_die(use_syslog, "cannot parse MAC %s", argv[optind]);
+ }
+ ch->mac = xcalloc(1, ETH_ALEN);
+ memcpy(ch->mac, mac, ETH_ALEN);
+ if (clist)
+ clist->pprev = &ch->next;
+ ch->next = clist;
+ ch->pprev = &clist;
+ clist = ch;
+ free(line);
+ }
+ fclose(ifh);
+ }
+
+ ifh = xfopen("/proc/net/dev", "r");
+ while ((line = get_line_from_file(ifh)) != NULL) {
+ char *line_ptr;
+ unsigned short iface_name_length;
+ struct ifreq ifr;
+ mactable_t *ch = NULL;
+
+ linenum++;
+ if (linenum < 3)
+ continue;
+ line_ptr = line + strspn(line, " \t");
+ if (line_ptr[0] == '\n')
+ continue;
+ iface_name_length = strcspn(line_ptr, ":");
+ if (ctl_sk < 0)
+ ctl_sk = socket(PF_INET, SOCK_DGRAM, 0);
+ memset(&ifr, 0, sizeof(struct ifreq));
+ strncpy(ifr.ifr_name, line_ptr, iface_name_length);
+ if (ioctl(ctl_sk, SIOCGIFHWADDR, &ifr) < 0) {
+ serror_msg_and_die(use_syslog, "cannot change name of %s to %s: %s", ifr.ifr_name, ch->ifname, strerror(errno));
+ }
+ for (ch = clist; ch; ch = ch->next)
+ if (!memcmp(ch->mac, ifr.ifr_hwaddr.sa_data, ETH_ALEN))
+ break;
+ if (ch == NULL) {
+ continue;
+ }
+ strcpy(ifr.ifr_newname, ch->ifname);
+
+ if (ioctl(ctl_sk, SIOCSIFNAME, &ifr) < 0) {;
+ serror_msg_and_die(use_syslog, "cannot change name of %s to %s: %s", ifr.ifr_name, ch->ifname, strerror(errno));
+ }
+ *ch->pprev = ch->next;
+ free(ch);
+ free(line);
+ }
+ fclose(ifh);
+
+ while (clist) {
+ mactable_t *ch;
+
+ ch = clist;
+ clist = clist->next;
+ free(ch);
+ }
+
+ return 0;
+}