* Written 2000 by Andi Kleen.
* Busybox port 2002 by Nick Fedchik <nick@fedchik.org.ua>
* Glenn McGrath
+ * Extended matching support 2008 by Nico Erfurth <masta@perlgolf.de>
*
- * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
+//config:config NAMEIF
+//config: bool "nameif"
+//config: default y
+//config: select PLATFORM_LINUX
+//config: select FEATURE_SYSLOG
+//config: help
+//config: nameif is used to rename network interface by its MAC address.
+//config: Renamed interfaces MUST be in the down state.
+//config: It is possible to use a file (default: /etc/mactab)
+//config: with list of new interface names and MACs.
+//config: Maximum interface name length: IFNAMSIZ = 16
+//config: File fields are separated by space or tab.
+//config: File format:
+//config: # Comment
+//config: new_interface_name XX:XX:XX:XX:XX:XX
+//config:
+//config:config FEATURE_NAMEIF_EXTENDED
+//config: bool "Extended nameif"
+//config: default y
+//config: depends on NAMEIF
+//config: help
+//config: This extends the nameif syntax to support the bus_info, driver,
+//config: phyaddr selectors. The syntax is compatible to the normal nameif.
+//config: File format:
+//config: new_interface_name driver=asix bus=usb-0000:00:08.2-3
+//config: new_interface_name bus=usb-0000:00:08.2-3 00:80:C8:38:91:B5
+//config: new_interface_name phy_address=2 00:80:C8:38:91:B5
+//config: new_interface_name mac=00:80:C8:38:91:B5
+//config: new_interface_name 00:80:C8:38:91:B5
+
+//usage:#define nameif_trivial_usage
+//usage: IF_NOT_FEATURE_NAMEIF_EXTENDED(
+//usage: "[-s] [-c FILE] [IFNAME HWADDR]..."
+//usage: )
+//usage: IF_FEATURE_NAMEIF_EXTENDED(
+//usage: "[-s] [-c FILE] [IFNAME SELECTOR]..."
+//usage: )
+//usage:#define nameif_full_usage "\n\n"
+//usage: "Rename network interface while it in the down state."
+//usage: IF_NOT_FEATURE_NAMEIF_EXTENDED(
+//usage: "\nThe device with address HWADDR is renamed to IFACE."
+//usage: )
+//usage: IF_FEATURE_NAMEIF_EXTENDED(
+//usage: "\nThe device matched by SELECTOR is renamed to IFACE."
+//usage: "\nSELECTOR can be a combination of:"
+//usage: "\n driver=STRING"
+//usage: "\n bus=STRING"
+//usage: "\n phy_address=NUM"
+//usage: "\n [mac=]XX:XX:XX:XX:XX:XX"
+//usage: )
+//usage: "\n"
+//usage: "\n -c FILE Configuration file (default: /etc/mactab)"
+//usage: "\n -s Log to syslog"
+//usage:
+//usage:#define nameif_example_usage
+//usage: "$ nameif -s dmz0 00:A0:C9:8C:F6:3F\n"
+//usage: " or\n"
+//usage: "$ nameif -c /etc/my_mactab_file\n"
+
#include "libbb.h"
#include <syslog.h>
#include <net/if.h>
#include <netinet/ether.h>
#include <linux/sockios.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
+#ifndef IFNAMSIZ
+#define IFNAMSIZ 16
#endif
-/* take from linux/sockios.h */
-#define SIOCSIFNAME 0x8923 /* set interface name */
+/* Taken from linux/sockios.h */
+#define SIOCSIFNAME 0x8923 /* set interface name */
/* Octets in one Ethernet addr, from <linux/if_ether.h> */
-#define ETH_ALEN 6
+#define ETH_ALEN 6
#ifndef ifr_newname
#define ifr_newname ifr_ifru.ifru_slave
#if ENABLE_FEATURE_NAMEIF_EXTENDED
char *bus_info;
char *driver;
+ int32_t phy_address;
#endif
} ethtable_t;
uint32_t eedump_len; /* Size of data from ETHTOOL_GEEPROM (bytes) */
uint32_t regdump_len; /* Size of data from ETHTOOL_GREGS (bytes) */
};
+
+struct ethtool_cmd {
+ uint32_t cmd;
+ uint32_t supported; /* Features this interface supports */
+ uint32_t advertising; /* Features this interface advertises */
+ uint16_t speed; /* The forced speed, 10Mb, 100Mb, gigabit */
+ uint8_t duplex; /* Duplex, half or full */
+ uint8_t port; /* Which connector port */
+ uint8_t phy_address;
+ uint8_t transceiver; /* Which transceiver to use */
+ uint8_t autoneg; /* Enable or disable autonegotiation */
+ uint32_t maxtxpkt; /* Tx pkts before generating tx int */
+ uint32_t maxrxpkt; /* Rx pkts before generating rx int */
+ uint16_t speed_hi;
+ uint16_t reserved2;
+ uint32_t reserved[3];
+};
+
+#define ETHTOOL_GSET 0x00000001 /* Get settings. */
#define ETHTOOL_GDRVINFO 0x00000003 /* Get driver info. */
#endif
#endif
selector = skip_whitespace(selector);
#if ENABLE_FEATURE_NAMEIF_EXTENDED
+ ch->phy_address = -1;
if (*selector == '\0')
break;
/* Search for the end .... */
} else if (strncmp(selector, "driver=", 7) == 0) {
ch->driver = xstrdup(selector + 7);
found_selector++;
+ } else if (strncmp(selector, "phyaddr=", 8) == 0) {
+ ch->phy_address = xatoi_positive(selector + 8);
+ found_selector++;
} else {
#endif
- lmac = ether_aton(selector + (strncmp(selector, "mac=", 4) == 0 ? 4 : 0));
- /* Check ascii selector, convert and copy to *mac */
- if (lmac == NULL)
- bb_error_msg_and_die("cannot parse %s", selector);
- ch->mac = xmalloc(ETH_ALEN);
- memcpy(ch->mac, lmac, ETH_ALEN);
+ lmac = xmalloc(ETH_ALEN);
+ ch->mac = ether_aton_r(selector + (strncmp(selector, "mac=", 4) != 0 ? 0 : 4), lmac);
+ if (ch->mac == NULL)
+ bb_error_msg_and_die("can't parse %s", selector);
#if ENABLE_FEATURE_NAMEIF_EXTENDED
found_selector++;
};
static void prepend_new_eth_table(ethtable_t **clist, char *ifname, char *selector)
{
ethtable_t *ch;
- if (strlen(ifname) >= IF_NAMESIZE)
+ if (strlen(ifname) >= IFNAMSIZ)
bb_error_msg_and_die("interface name '%s' too long", ifname);
ch = xzalloc(sizeof(*ch));
- ch->ifname = ifname;
+ ch->ifname = xstrdup(ifname);
nameif_parse_selector(ch, selector);
ch->next = *clist;
if (*clist)
*clist = ch;
}
+#if ENABLE_FEATURE_CLEAN_UP
+static void delete_eth_table(ethtable_t *ch)
+{
+ free(ch->ifname);
+#if ENABLE_FEATURE_NAMEIF_EXTENDED
+ free(ch->bus_info);
+ free(ch->driver);
+#endif
+ free(ch->mac);
+ free(ch);
+};
+#else
+void delete_eth_table(ethtable_t *ch);
+#endif
+
int nameif_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int nameif_main(int argc, char **argv)
+int nameif_main(int argc UNUSED_PARAM, char **argv)
{
ethtable_t *clist = NULL;
- FILE *ifh;
const char *fname = "/etc/mactab";
- char *line;
- char *line_ptr;
- int linenum;
int ctl_sk;
ethtable_t *ch;
+ parser_t *parser;
+ char *token[2];
if (1 & getopt32(argv, "sc:", &fname)) {
openlog(applet_name, 0, LOG_LOCAL0);
- logmode = LOGMODE_SYSLOG;
+ /* Why not just "="? I assume logging to stderr
+ * can't hurt. 2>/dev/null if you don't like it: */
+ logmode |= LOGMODE_SYSLOG;
}
- argc -= optind;
argv += optind;
- if (argc & 1)
- bb_show_usage();
-
- if (argc) {
- while (*argv) {
- char *ifname = xstrdup(*argv++);
- prepend_new_eth_table(&clist, ifname, *argv++);
- }
+ if (argv[0]) {
+ do {
+ if (!argv[1])
+ bb_show_usage();
+ prepend_new_eth_table(&clist, argv[0], argv[1]);
+ argv += 2;
+ } while (*argv);
} else {
- ifh = xfopen(fname, "r");
- while ((line = xmalloc_fgets(ifh)) != NULL) {
- char *next;
-
- line_ptr = skip_whitespace(line);
- if ((line_ptr[0] == '#') || (line_ptr[0] == '\n')) {
- free(line);
- continue;
- }
- next = skip_non_whitespace(line_ptr);
- if (*next)
- *next++ = '\0';
- prepend_new_eth_table(&clist, line_ptr, next);
- free(line);
- }
- fclose(ifh);
+ parser = config_open(fname);
+ while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL))
+ prepend_new_eth_table(&clist, token[0], token[1]);
+ config_close(parser);
}
ctl_sk = xsocket(PF_INET, SOCK_DGRAM, 0);
- ifh = xfopen("/proc/net/dev", "r");
+ parser = config_open2("/proc/net/dev", xfopen_for_read);
- linenum = 0;
- while (clist) {
+ while (clist && config_read(parser, token, 2, 2, "\0: \t", PARSE_NORMAL)) {
struct ifreq ifr;
#if ENABLE_FEATURE_NAMEIF_EXTENDED
struct ethtool_drvinfo drvinfo;
+ struct ethtool_cmd eth_settings;
#endif
-
- line = xmalloc_fgets(ifh);
- if (line == NULL)
- break; /* Seems like we're done */
- if (linenum++ < 2 )
- goto next_line; /* Skip the first two lines */
+ if (parser->lineno <= 2)
+ continue; /* Skip the first two lines */
/* Find the current interface name and copy it to ifr.ifr_name */
- line_ptr = skip_whitespace(line);
- *skip_non_whitespace(line_ptr) = '\0';
-
memset(&ifr, 0, sizeof(struct ifreq));
- strncpy(ifr.ifr_name, line_ptr, sizeof(ifr.ifr_name));
+ strncpy_IFNAMSIZ(ifr.ifr_name, token[0]);
#if ENABLE_FEATURE_NAMEIF_EXTENDED
+ /* Check for phy address */
+ memset(ð_settings, 0, sizeof(eth_settings));
+ eth_settings.cmd = ETHTOOL_GSET;
+ ifr.ifr_data = (caddr_t) ð_settings;
+ ioctl(ctl_sk, SIOCETHTOOL, &ifr);
+
/* Check for driver etc. */
- memset(&drvinfo, 0, sizeof(struct ethtool_drvinfo));
+ memset(&drvinfo, 0, sizeof(drvinfo));
drvinfo.cmd = ETHTOOL_GDRVINFO;
ifr.ifr_data = (caddr_t) &drvinfo;
/* Get driver and businfo first, so we have it in drvinfo */
continue;
if (ch->driver && strcmp(ch->driver, drvinfo.driver) != 0)
continue;
+ if (ch->phy_address != -1 && ch->phy_address != eth_settings.phy_address)
+ continue;
#endif
if (ch->mac && memcmp(ch->mac, ifr.ifr_hwaddr.sa_data, ETH_ALEN) != 0)
continue;
goto found;
}
/* Nothing found for current interface */
- goto next_line;
+ continue;
found:
if (strcmp(ifr.ifr_name, ch->ifname) != 0) {
strcpy(ifr.ifr_newname, ch->ifname);
ioctl_or_perror_and_die(ctl_sk, SIOCSIFNAME, &ifr,
- "cannot change ifname %s to %s",
+ "can't change ifname %s to %s",
ifr.ifr_name, ch->ifname);
}
/* Remove list entry of renamed interface */
clist = ch->next;
if (ch->next != NULL)
ch->next->prev = ch->prev;
- if (ENABLE_FEATURE_CLEAN_UP) {
- free(ch->ifname);
- free(ch->mac);
- free(ch);
- }
- next_line:
- free(line);
- }
+ if (ENABLE_FEATURE_CLEAN_UP)
+ delete_eth_table(ch);
+ } /* while */
+
if (ENABLE_FEATURE_CLEAN_UP) {
- fclose(ifh);
+ ethtable_t *next;
+ for (ch = clist; ch; ch = next) {
+ next = ch->next;
+ delete_eth_table(ch);
+ }
+ config_close(parser);
};
return 0;
projects / oweals / busybox.git / blobdiff