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author | David S. Miller <davem@davemloft.net> | 2012-04-01 19:03:15 -0400 |
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committer | David S. Miller <davem@davemloft.net> | 2012-04-02 04:33:41 -0400 |
commit | 969e8e255c0a18c30cf78feca2d2e546b5746fc4 (patch) | |
tree | 309f3674ec0dfc87479cdb039654d9c6a0a20689 /net/netfilter/ipvs | |
parent | bae65be896cc420f58460cb6f6ac03e71d1bf240 (diff) | |
download | op-kernel-dev-969e8e255c0a18c30cf78feca2d2e546b5746fc4.zip op-kernel-dev-969e8e255c0a18c30cf78feca2d2e546b5746fc4.tar.gz |
ipvs: Stop using NLA_PUT*().
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>
Diffstat (limited to 'net/netfilter/ipvs')
-rw-r--r-- | net/netfilter/ipvs/ip_vs_ctl.c | 108 |
1 files changed, 58 insertions, 50 deletions
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c index b3afe18..964d426 100644 --- a/net/netfilter/ipvs/ip_vs_ctl.c +++ b/net/netfilter/ipvs/ip_vs_ctl.c @@ -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; } |