ip link: add support for "address ETHADDR". Closes 4862
[oweals/busybox.git] / networking / libiproute / iprule.c
index f62429a7ca410e38a49ad70f754f829b2de8693d..8dbe6bd92a5a1306423ee046dd202a235208b94f 100644 (file)
@@ -1,19 +1,16 @@
 /* vi: set sw=4 ts=4: */
 /*
- * iprule.c            "ip rule".
- *
- *             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.
- *
- * Authors:    Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
+ * 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.
  *
+ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
  *
  * Changes:
  *
- * Rani Assaf <rani@magic.metawire.com> 980929:        resolve addresses
- * initially integrated into busybox by Bernhard Fischer
+ * Rani Assaf <rani@magic.metawire.com> 980929: resolve addresses
+ * initially integrated into busybox by Bernhard Reutner-Fischer
  */
 
 #include <netinet/in.h>
@@ -40,8 +37,8 @@ static void usage(void)
 }
 */
 
-static int print_rule(struct sockaddr_nl *who ATTRIBUTE_UNUSED,
-                                       struct nlmsghdr *n, void *arg ATTRIBUTE_UNUSED)
+static int FAST_FUNC print_rule(const struct sockaddr_nl *who UNUSED_PARAM,
+                                       struct nlmsghdr *n, void *arg UNUSED_PARAM)
 {
        struct rtmsg *r = NLMSG_DATA(n);
        int len = n->nlmsg_len;
@@ -69,25 +66,24 @@ static int print_rule(struct sockaddr_nl *who ATTRIBUTE_UNUSED,
        else if (r->rtm_family == AF_IPX)
                host_len = 80;
 */
-       if (tb[RTA_PRIORITY])
-               printf("%u:\t", *(unsigned*)RTA_DATA(tb[RTA_PRIORITY]));
-       else
-               printf("0:\t");
-
+       printf("%u:\t", tb[RTA_PRIORITY] ?
+                                       *(unsigned*)RTA_DATA(tb[RTA_PRIORITY])
+                                       : 0);
        printf("from ");
        if (tb[RTA_SRC]) {
                if (r->rtm_src_len != host_len) {
                        printf("%s/%u", rt_addr_n2a(r->rtm_family,
-                                                        RTA_PAYLOAD(tb[RTA_SRC]),
-                                                        RTA_DATA(tb[RTA_SRC]),
-                                                        abuf, sizeof(abuf)),
+                                                       RTA_DATA(tb[RTA_SRC]),
+                                                       abuf, sizeof(abuf)),
                                r->rtm_src_len
-                               );
+                       );
                } else {
                        fputs(format_host(r->rtm_family,
-                                                      RTA_PAYLOAD(tb[RTA_SRC]),
-                                                      RTA_DATA(tb[RTA_SRC]),
-                                                      abuf, sizeof(abuf)), stdout);
+                                               RTA_PAYLOAD(tb[RTA_SRC]),
+                                               RTA_DATA(tb[RTA_SRC]),
+                                               abuf, sizeof(abuf)),
+                               stdout
+                       );
                }
        } else if (r->rtm_src_len) {
                printf("0/%d", r->rtm_src_len);
@@ -99,7 +95,6 @@ static int print_rule(struct sockaddr_nl *who ATTRIBUTE_UNUSED,
        if (tb[RTA_DST]) {
                if (r->rtm_dst_len != host_len) {
                        printf("to %s/%u ", rt_addr_n2a(r->rtm_family,
-                                                        RTA_PAYLOAD(tb[RTA_DST]),
                                                         RTA_DATA(tb[RTA_DST]),
                                                         abuf, sizeof(abuf)),
                                r->rtm_dst_len
@@ -115,7 +110,7 @@ static int print_rule(struct sockaddr_nl *who ATTRIBUTE_UNUSED,
        }
 
        if (r->rtm_tos) {
-               printf("tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1, sizeof(b1)));
+               printf("tos %s ", rtnl_dsfield_n2a(r->rtm_tos, b1));
        }
        if (tb[RTA_PROTOINFO]) {
                printf("fwmark %#x ", *(uint32_t*)RTA_DATA(tb[RTA_PROTOINFO]));
@@ -126,7 +121,7 @@ static int print_rule(struct sockaddr_nl *who ATTRIBUTE_UNUSED,
        }
 
        if (r->rtm_table)
-               printf("lookup %s ", rtnl_rttable_n2a(r->rtm_table, b1, sizeof(b1)));
+               printf("lookup %s ", rtnl_rttable_n2a(r->rtm_table, b1));
 
        if (tb[RTA_FLOW]) {
                uint32_t to = *(uint32_t*)RTA_DATA(tb[RTA_FLOW]);
@@ -134,10 +129,10 @@ static int print_rule(struct sockaddr_nl *who ATTRIBUTE_UNUSED,
                to &= 0xFFFF;
                if (from) {
                        printf("realms %s/",
-                               rtnl_rtrealm_n2a(from, b1, sizeof(b1)));
+                               rtnl_rtrealm_n2a(from, b1));
                }
                printf("%s ",
-                       rtnl_rtrealm_n2a(to, b1, sizeof(b1)));
+                       rtnl_rtrealm_n2a(to, b1));
        }
 
        if (r->rtm_type == RTN_NAT) {
@@ -150,10 +145,10 @@ static int print_rule(struct sockaddr_nl *who ATTRIBUTE_UNUSED,
                } else
                        printf("masquerade");
        } else if (r->rtm_type != RTN_UNICAST)
-               fputs(rtnl_rtntype_n2a(r->rtm_type, b1, sizeof(b1)), stdout);
+               fputs(rtnl_rtntype_n2a(r->rtm_type, b1), stdout);
 
        bb_putchar('\n');
-       /*fflush(stdout);*/
+       /*fflush_all();*/
        return 0;
 }
 
@@ -168,7 +163,7 @@ static int iprule_list(char **argv)
 
        if (*argv) {
                //bb_error_msg("\"rule show\" needs no arguments");
-               bb_warn_ignoring_args(1);
+               bb_warn_ignoring_args(*argv);
                return -1;
        }
 
@@ -195,9 +190,9 @@ static int iprule_modify(int cmd, char **argv)
        bool table_ok = 0;
        struct rtnl_handle rth;
        struct {
-               struct nlmsghdr n;
-               struct rtmsg    r;
-               char            buf[1024];
+               struct nlmsghdr n;
+               struct rtmsg    r;
+               char            buf[1024];
        } req;
        smalluint key;
 
@@ -220,7 +215,7 @@ static int iprule_modify(int cmd, char **argv)
        while (*argv) {
                key = index_in_substrings(keywords, *argv) + 1;
                if (key == 0) /* no match found in keywords array, bail out. */
-                       bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name);
+                       invarg(*argv, applet_name);
                if (key == ARG_from) {
                        inet_prefix dst;
                        NEXT_ARG();
@@ -235,11 +230,11 @@ static int iprule_modify(int cmd, char **argv)
                        addattr_l(&req.n, sizeof(req), RTA_DST, &dst.data, dst.bytelen);
                } else if (key == ARG_preference ||
                           key == ARG_order ||
-                          key == ARG_priority) {
+                          key == ARG_priority
+               ) {
                        uint32_t pref;
                        NEXT_ARG();
-                       if (get_u32(&pref, *argv, 0))
-                               invarg(*argv, "preference");
+                       pref = get_u32(*argv, "preference");
                        addattr32(&req.n, sizeof(req), RTA_PRIORITY, pref);
                } else if (key == ARG_tos) {
                        uint32_t tos;
@@ -250,8 +245,7 @@ static int iprule_modify(int cmd, char **argv)
                } else if (key == ARG_fwmark) {
                        uint32_t fwmark;
                        NEXT_ARG();
-                       if (get_u32(&fwmark, *argv, 0))
-                               invarg(*argv, "fwmark");
+                       fwmark = get_u32(*argv, "fwmark");
                        addattr32(&req.n, sizeof(req), RTA_PROTOINFO, fwmark);
                } else if (key == ARG_realms) {
                        uint32_t realm;
@@ -260,7 +254,8 @@ static int iprule_modify(int cmd, char **argv)
                                invarg(*argv, "realms");
                        addattr32(&req.n, sizeof(req), RTA_FLOW, realm);
                } else if (key == ARG_table ||
-                          key == ARG_lookup) {
+                          key == ARG_lookup
+               ) {
                        uint32_t tid;
                        NEXT_ARG();
                        if (rtnl_rttable_a2n(&tid, *argv))
@@ -268,11 +263,13 @@ static int iprule_modify(int cmd, char **argv)
                        req.r.rtm_table = tid;
                        table_ok = 1;
                } else if (key == ARG_dev ||
-                          key == ARG_iif) {
+                          key == ARG_iif
+               ) {
                        NEXT_ARG();
                        addattr_l(&req.n, sizeof(req), RTA_IIF, *argv, strlen(*argv)+1);
                } else if (key == ARG_nat ||
-                          key == ARG_map_to) {
+                          key == ARG_map_to
+               ) {
                        NEXT_ARG();
                        addattr32(&req.n, sizeof(req), RTA_GATEWAY, get_addr32(*argv));
                        req.r.rtm_type = RTN_NAT;
@@ -306,29 +303,17 @@ static int iprule_modify(int cmd, char **argv)
 }
 
 /* Return value becomes exitcode. It's okay to not return at all */
-int do_iprule(char **argv)
+int FAST_FUNC do_iprule(char **argv)
 {
        static const char ip_rule_commands[] ALIGN1 =
                "add\0""delete\0""list\0""show\0";
-       int cmd = 2; /* list */
-
-       if (!*argv)
-               return iprule_list(argv);
-
-       cmd = index_in_substrings(ip_rule_commands, *argv);
-       switch (cmd) {
-               case 0: /* add */
-                       cmd = RTM_NEWRULE;
-                       break;
-               case 1: /* delete */
-                       cmd = RTM_DELRULE;
-                       break;
-               case 2: /* list */
-               case 3: /* show */
-                       return iprule_list(argv+1);
-                       break;
-               default:
-                       bb_error_msg_and_die("unknown command %s", *argv);
+       if (*argv) {
+               int cmd = index_in_substrings(ip_rule_commands, *argv);
+               if (cmd < 0)
+                       invarg(*argv, applet_name);
+               argv++;
+               if (cmd < 2)
+                       return iprule_modify((cmd == 0) ? RTM_NEWRULE : RTM_DELRULE, argv);
        }
-       return iprule_modify(cmd, argv+1);
+       return iprule_list(argv);
 }