[src/trunk]: src/usr.sbin/ifwatchd We already know the interface name, so don...

[roy <roy%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/a9f977129e8b
branches:  trunk
changeset: 348157:a9f977129e8b
user:      roy <roy%NetBSD.org@localhost>
date:      Thu Oct 06 10:30:31 2016 +0000

description:
We already know the interface name, so don't bother calling if_indextoname
to work it out again.

diffstat:

 usr.sbin/ifwatchd/ifwatchd.c |  53 +++++++++++++++++++------------------------
 1 files changed, 23 insertions(+), 30 deletions(-)

diffs (142 lines):

diff -r 71f1da8faecd -r a9f977129e8b usr.sbin/ifwatchd/ifwatchd.c
--- a/usr.sbin/ifwatchd/ifwatchd.c      Thu Oct 06 03:17:44 2016 +0000
+++ b/usr.sbin/ifwatchd/ifwatchd.c      Thu Oct 06 10:30:31 2016 +0000
@@ -1,6 +1,6 @@
-/*     $NetBSD: ifwatchd.c,v 1.36 2016/09/29 15:25:28 roy Exp $        */
+/*     $NetBSD: ifwatchd.c,v 1.37 2016/10/06 10:30:31 roy Exp $        */
 #include <sys/cdefs.h>
- __RCSID("$NetBSD: ifwatchd.c,v 1.36 2016/09/29 15:25:28 roy Exp $");
+ __RCSID("$NetBSD: ifwatchd.c,v 1.37 2016/10/06 10:30:31 roy Exp $");
 
 /*-
  * Copyright (c) 2002, 2003 The NetBSD Foundation, Inc.
@@ -63,8 +63,8 @@
 static void dispatch(const void *, size_t);
 static enum addrflag check_addrflags(int af, int addrflags);
 static void check_addrs(const struct ifa_msghdr *ifam);
-static void invoke_script(const struct sockaddr *sa, const struct sockaddr *dst,
-    enum event ev, int ifindex, const char *ifname_hint);
+static void invoke_script(const char *ifname, enum event ev,
+    const struct sockaddr *sa, const struct sockaddr *dst);
 static void list_interfaces(const char *ifnames);
 static void check_announce(const struct if_announcemsghdr *ifan);
 static void check_carrier(const struct if_msghdr *ifm);
@@ -346,19 +346,26 @@
                }
                if ((ev == UP && aflag == READY) ||
                    (ev == DOWN && aflag == DETACHED /* XXX why DETACHED? */))
-                       invoke_script(ifa, brd, ev, ifd->index, ifd->ifname);
+                       invoke_script(ifd->ifname, ev, ifa, brd);
        }
 }
 
 static void
-invoke_script(const struct sockaddr *sa, const struct sockaddr *dest,
-    enum event ev, int ifindex, const char *ifname_hint)
+invoke_script(const char *ifname, enum event ev,
+    const struct sockaddr *sa, const struct sockaddr *dest)
 {
-       char addr[NI_MAXHOST], daddr[NI_MAXHOST], ifname_buf[IFNAMSIZ];
-       const char * volatile ifname;
+       char addr[NI_MAXHOST], daddr[NI_MAXHOST];
        const char *script;
        int status;
 
+       if (ifname == NULL)
+               return;
+
+       script = *scripts[ev];
+       if (script == NULL)
+               return;
+
+       addr[0] = daddr[0] = 0;
        if (sa != NULL) {
                if (sa->sa_len == 0) {
                        fprintf(stderr,
@@ -384,15 +391,7 @@
                                return;
                }
                }
-       }
 
-       addr[0] = daddr[0] = 0;
-       ifname = if_indextoname(ifindex, ifname_buf);
-       ifname = ifname ? ifname : ifname_hint;
-       if (ifname == NULL)
-               return;
-
-       if (sa != NULL) {
                if (getnameinfo(sa, sa->sa_len, addr, sizeof addr, NULL, 0,
                    NI_NUMERICHOST)) {
                        if (verbose)
@@ -400,6 +399,7 @@
                        return; /* this address can not be handled */
                }
        }
+
        if (dest != NULL) {
                if (getnameinfo(dest, dest->sa_len, daddr, sizeof daddr,
                    NULL, 0, NI_NUMERICHOST)) {
@@ -409,9 +409,6 @@
                }
        }
 
-       script = *scripts[ev];
-       if (script == NULL) return;
-
        if (verbose)
                (void) printf("calling: %s %s %s %s %s %s\n",
                    script, ifname, DummyTTY, DummySpeed, addr, daddr);
@@ -496,7 +493,7 @@
                                printf("unknown link status ignored\n");
                        return;
                }
-               invoke_script(NULL, NULL, ev, ifm->ifm_index, p->ifname);
+               invoke_script(p->ifname, ev, NULL, NULL);
                p->last_carrier_status = carrier_status;
        }
 }
@@ -513,12 +510,10 @@
 
                switch (ifan->ifan_what) {
                case IFAN_ARRIVAL:
-                       invoke_script(NULL, NULL, ARRIVAL, p->index,
-                           NULL);
+                       invoke_script(p->ifname, ARRIVAL, NULL, NULL);
                        break;
                case IFAN_DEPARTURE:
-                       invoke_script(NULL, NULL, DEPARTURE, p->index,
-                           p->ifname);
+                       invoke_script(p->ifname, DEPARTURE, NULL, NULL);
                        break;
                default:
                        if (verbose)
@@ -592,8 +587,7 @@
 
                ifa = p->ifa_addr;
                if (ifa != NULL && ifa->sa_family == AF_LINK)
-                       invoke_script(NULL, NULL, ARRIVAL, ifd->index,
-                           NULL);
+                       invoke_script(ifd->ifname, ARRIVAL, NULL, NULL);
 
                if ((p->ifa_flags & IFF_UP) == 0)
                        continue;
@@ -608,8 +602,7 @@
                        if (ioctl(s, SIOCGIFMEDIA, &ifmr) != -1
                            && (ifmr.ifm_status & IFM_AVALID)
                            && (ifmr.ifm_status & IFM_ACTIVE)) {
-                               invoke_script(NULL, NULL, CARRIER,
-                                   ifd->index, ifd->ifname);
+                               invoke_script(ifd->ifname, CARRIER, NULL, NULL);
                                ifd->last_carrier_status =
                                    LINK_STATE_UP;
                            }
@@ -618,7 +611,7 @@
                aflag = check_addrflags(ifa->sa_family, p->ifa_addrflags);
                if (aflag != READY)
                        continue;
-               invoke_script(ifa, p->ifa_dstaddr, UP, ifd->index, ifd->ifname);
+               invoke_script(ifd->ifname, UP, ifa, p->ifa_dstaddr);
        }
        freeifaddrs(res);
 out: