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ipvs: Stop using NLA_PUT*().

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These macros contain a hidden goto, and are thus extremely error
prone and make code hard to audit.

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Simon Horman <horms@verge.net.au>
This commit is contained in:
David S. Miller 2012-04-01 19:03:15 -04:00
parent bae65be896
commit 969e8e255c
1 changed files with 58 additions and 50 deletions
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108
net/netfilter/ipvs/ip_vs_ctl.c
View File

@ -2816,17 +2816,17 @@ static int ip_vs_genl_fill_stats(struct sk_buff *skb, int container_type,
ip_vs_copy_stats(&ustats, stats);
NLA_PUT_U32(skb, IPVS_STATS_ATTR_CONNS, ustats.conns);
NLA_PUT_U32(skb, IPVS_STATS_ATTR_INPKTS, ustats.inpkts);
NLA_PUT_U32(skb, IPVS_STATS_ATTR_OUTPKTS, ustats.outpkts);
NLA_PUT_U64(skb, IPVS_STATS_ATTR_INBYTES, ustats.inbytes);
NLA_PUT_U64(skb, IPVS_STATS_ATTR_OUTBYTES, ustats.outbytes);
NLA_PUT_U32(skb, IPVS_STATS_ATTR_CPS, ustats.cps);
NLA_PUT_U32(skb, IPVS_STATS_ATTR_INPPS, ustats.inpps);
NLA_PUT_U32(skb, IPVS_STATS_ATTR_OUTPPS, ustats.outpps);
NLA_PUT_U32(skb, IPVS_STATS_ATTR_INBPS, ustats.inbps);
NLA_PUT_U32(skb, IPVS_STATS_ATTR_OUTBPS, ustats.outbps);
if (nla_put_u32(skb, IPVS_STATS_ATTR_CONNS, ustats.conns) ||
nla_put_u32(skb, IPVS_STATS_ATTR_INPKTS, ustats.inpkts) ||
nla_put_u32(skb, IPVS_STATS_ATTR_OUTPKTS, ustats.outpkts) ||
nla_put_u64(skb, IPVS_STATS_ATTR_INBYTES, ustats.inbytes) ||
nla_put_u64(skb, IPVS_STATS_ATTR_OUTBYTES, ustats.outbytes) ||
nla_put_u32(skb, IPVS_STATS_ATTR_CPS, ustats.cps) ||
nla_put_u32(skb, IPVS_STATS_ATTR_INPPS, ustats.inpps) ||
nla_put_u32(skb, IPVS_STATS_ATTR_OUTPPS, ustats.outpps) ||
nla_put_u32(skb, IPVS_STATS_ATTR_INBPS, ustats.inbps) ||
nla_put_u32(skb, IPVS_STATS_ATTR_OUTBPS, ustats.outbps))
goto nla_put_failure;
nla_nest_end(skb, nl_stats);
return 0;
@ -2847,23 +2847,25 @@ static int ip_vs_genl_fill_service(struct sk_buff *skb,
if (!nl_service)
return -EMSGSIZE;
NLA_PUT_U16(skb, IPVS_SVC_ATTR_AF, svc->af);
if (nla_put_u16(skb, IPVS_SVC_ATTR_AF, svc->af))
goto nla_put_failure;
if (svc->fwmark) {
NLA_PUT_U32(skb, IPVS_SVC_ATTR_FWMARK, svc->fwmark);
if (nla_put_u32(skb, IPVS_SVC_ATTR_FWMARK, svc->fwmark))
goto nla_put_failure;
} else {
NLA_PUT_U16(skb, IPVS_SVC_ATTR_PROTOCOL, svc->protocol);
NLA_PUT(skb, IPVS_SVC_ATTR_ADDR, sizeof(svc->addr), &svc->addr);
NLA_PUT_U16(skb, IPVS_SVC_ATTR_PORT, svc->port);
if (nla_put_u16(skb, IPVS_SVC_ATTR_PROTOCOL, svc->protocol) ||
nla_put(skb, IPVS_SVC_ATTR_ADDR, sizeof(svc->addr), &svc->addr) ||
nla_put_u16(skb, IPVS_SVC_ATTR_PORT, svc->port))
goto nla_put_failure;
}
NLA_PUT_STRING(skb, IPVS_SVC_ATTR_SCHED_NAME, svc->scheduler->name);
if (svc->pe)
NLA_PUT_STRING(skb, IPVS_SVC_ATTR_PE_NAME, svc->pe->name);
NLA_PUT(skb, IPVS_SVC_ATTR_FLAGS, sizeof(flags), &flags);
NLA_PUT_U32(skb, IPVS_SVC_ATTR_TIMEOUT, svc->timeout / HZ);
NLA_PUT_U32(skb, IPVS_SVC_ATTR_NETMASK, svc->netmask);
if (nla_put_string(skb, IPVS_SVC_ATTR_SCHED_NAME, svc->scheduler->name) ||
(svc->pe &&
nla_put_string(skb, IPVS_SVC_ATTR_PE_NAME, svc->pe->name)) ||
nla_put(skb, IPVS_SVC_ATTR_FLAGS, sizeof(flags), &flags) ||
nla_put_u32(skb, IPVS_SVC_ATTR_TIMEOUT, svc->timeout / HZ) ||
nla_put_u32(skb, IPVS_SVC_ATTR_NETMASK, svc->netmask))
goto nla_put_failure;
if (ip_vs_genl_fill_stats(skb, IPVS_SVC_ATTR_STATS, &svc->stats))
goto nla_put_failure;
@ -3038,21 +3040,22 @@ static int ip_vs_genl_fill_dest(struct sk_buff *skb, struct ip_vs_dest *dest)
if (!nl_dest)
return -EMSGSIZE;
NLA_PUT(skb, IPVS_DEST_ATTR_ADDR, sizeof(dest->addr), &dest->addr);
NLA_PUT_U16(skb, IPVS_DEST_ATTR_PORT, dest->port);
NLA_PUT_U32(skb, IPVS_DEST_ATTR_FWD_METHOD,
atomic_read(&dest->conn_flags) & IP_VS_CONN_F_FWD_MASK);
NLA_PUT_U32(skb, IPVS_DEST_ATTR_WEIGHT, atomic_read(&dest->weight));
NLA_PUT_U32(skb, IPVS_DEST_ATTR_U_THRESH, dest->u_threshold);
NLA_PUT_U32(skb, IPVS_DEST_ATTR_L_THRESH, dest->l_threshold);
NLA_PUT_U32(skb, IPVS_DEST_ATTR_ACTIVE_CONNS,
atomic_read(&dest->activeconns));
NLA_PUT_U32(skb, IPVS_DEST_ATTR_INACT_CONNS,
atomic_read(&dest->inactconns));
NLA_PUT_U32(skb, IPVS_DEST_ATTR_PERSIST_CONNS,
atomic_read(&dest->persistconns));
if (nla_put(skb, IPVS_DEST_ATTR_ADDR, sizeof(dest->addr), &dest->addr) ||
nla_put_u16(skb, IPVS_DEST_ATTR_PORT, dest->port) ||
nla_put_u32(skb, IPVS_DEST_ATTR_FWD_METHOD,
(atomic_read(&dest->conn_flags) &
IP_VS_CONN_F_FWD_MASK)) ||
nla_put_u32(skb, IPVS_DEST_ATTR_WEIGHT,
atomic_read(&dest->weight)) ||
nla_put_u32(skb, IPVS_DEST_ATTR_U_THRESH, dest->u_threshold) ||
nla_put_u32(skb, IPVS_DEST_ATTR_L_THRESH, dest->l_threshold) ||
nla_put_u32(skb, IPVS_DEST_ATTR_ACTIVE_CONNS,
atomic_read(&dest->activeconns)) ||
nla_put_u32(skb, IPVS_DEST_ATTR_INACT_CONNS,
atomic_read(&dest->inactconns)) ||
nla_put_u32(skb, IPVS_DEST_ATTR_PERSIST_CONNS,
atomic_read(&dest->persistconns)))
goto nla_put_failure;
if (ip_vs_genl_fill_stats(skb, IPVS_DEST_ATTR_STATS, &dest->stats))
goto nla_put_failure;
@ -3181,10 +3184,10 @@ static int ip_vs_genl_fill_daemon(struct sk_buff *skb, __be32 state,
if (!nl_daemon)
return -EMSGSIZE;
NLA_PUT_U32(skb, IPVS_DAEMON_ATTR_STATE, state);
NLA_PUT_STRING(skb, IPVS_DAEMON_ATTR_MCAST_IFN, mcast_ifn);
NLA_PUT_U32(skb, IPVS_DAEMON_ATTR_SYNC_ID, syncid);
if (nla_put_u32(skb, IPVS_DAEMON_ATTR_STATE, state) ||
nla_put_string(skb, IPVS_DAEMON_ATTR_MCAST_IFN, mcast_ifn) ||
nla_put_u32(skb, IPVS_DAEMON_ATTR_SYNC_ID, syncid))
goto nla_put_failure;
nla_nest_end(skb, nl_daemon);
return 0;
@ -3473,21 +3476,26 @@ static int ip_vs_genl_get_cmd(struct sk_buff *skb, struct genl_info *info)
__ip_vs_get_timeouts(net, &t);
#ifdef CONFIG_IP_VS_PROTO_TCP
NLA_PUT_U32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP, t.tcp_timeout);
NLA_PUT_U32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN,
t.tcp_fin_timeout);
if (nla_put_u32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP,
t.tcp_timeout) ||
nla_put_u32(msg, IPVS_CMD_ATTR_TIMEOUT_TCP_FIN,
t.tcp_fin_timeout))
goto nla_put_failure;
#endif
#ifdef CONFIG_IP_VS_PROTO_UDP
NLA_PUT_U32(msg, IPVS_CMD_ATTR_TIMEOUT_UDP, t.udp_timeout);
if (nla_put_u32(msg, IPVS_CMD_ATTR_TIMEOUT_UDP, t.udp_timeout))
goto nla_put_failure;
#endif
break;
}
case IPVS_CMD_GET_INFO:
NLA_PUT_U32(msg, IPVS_INFO_ATTR_VERSION, IP_VS_VERSION_CODE);
NLA_PUT_U32(msg, IPVS_INFO_ATTR_CONN_TAB_SIZE,
ip_vs_conn_tab_size);
if (nla_put_u32(msg, IPVS_INFO_ATTR_VERSION,
IP_VS_VERSION_CODE) ||
nla_put_u32(msg, IPVS_INFO_ATTR_CONN_TAB_SIZE,
ip_vs_conn_tab_size))
goto nla_put_failure;
break;
}