diff options
Diffstat (limited to 'usr.sbin/sasyncd/carp.c')
| -rw-r--r-- | usr.sbin/sasyncd/carp.c | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/usr.sbin/sasyncd/carp.c b/usr.sbin/sasyncd/carp.c index 918328dc51e..7c67dc1aed0 100644 --- a/usr.sbin/sasyncd/carp.c +++ b/usr.sbin/sasyncd/carp.c @@ -1,4 +1,4 @@ -/* $OpenBSD: carp.c,v 1.3 2006/06/01 22:43:12 mcbride Exp $ */ +/* $OpenBSD: carp.c,v 1.4 2006/06/02 20:09:43 mcbride Exp $ */ /* * Copyright (c) 2005 Håkan Olsson. All rights reserved. @@ -43,6 +43,8 @@ #include "sasyncd.h" +int carp_demoted = 0; + static enum RUNSTATE carp_map_state(u_char link_state) { @@ -94,6 +96,54 @@ carp_get_state(char *ifname) return carp_map_state(ifrdat.ifi_link_state); } +void +carp_demote(int demote, int force) +{ + struct ifgroupreq ifgr; + int s; + + if (carp_demoted + demote < 0) { + log_msg(1, "carp_demote: mismatched promotion"); + return; + } + + s = socket(AF_INET, SOCK_DGRAM, 0); + if (s < 0) { + log_msg(1, "carp_demote: couldn't open socket"); + return; + } + + bzero(&ifgr, sizeof(ifgr)); + strlcpy(ifgr.ifgr_name, cfgstate.carp_ifgroup, sizeof(ifgr.ifgr_name)); + + /* Unless we force it, don't demote if we're not demoting already. */ + if (!force) { + if (ioctl(s, SIOCGIFGATTR, (caddr_t)&ifgr) == -1) { + log_msg(1, "carp_demote: unable to get " + "the demote state of group '%s'", + cfgstate.carp_ifgroup); + goto done; + } + + if (ifgr.ifgr_attrib.ifg_carp_demoted == 0) + goto done; + } + + ifgr.ifgr_attrib.ifg_carp_demoted = demote; + if (ioctl(s, SIOCSIFGATTR, (caddr_t)&ifgr) == -1) + log_msg(1, "carp_demote: unable to %s the demote state " + "of group '%s'", (demote > 0) ? + "increment" : "decrement", cfgstate.carp_ifgroup); + else { + carp_demoted += demote; + log_msg(1, "carp_demote: %sed the demote state " + "of group '%s'", (demote > 0) ? + "increment" : "decrement", cfgstate.carp_ifgroup); + } +done: + close(s); +} + const char* carp_state_name(enum RUNSTATE state) { |