From 56628b1d8964eb7ac924154d60b5d874bfb2b1e8 Mon Sep 17 00:00:00 2001 From: Pavel Emelyanov Date: Tue, 12 Feb 2008 22:37:19 -0800 Subject: [NETLABEL]: Don't produce unused variables when IPv6 is off. Some code declares variables on the stack, but uses them under #ifdef CONFIG_IPV6, so thay become unused when ipv6 is off. Fortunately, they are used in a switch's case branches, so the fix is rather simple. Is it OK from coding style POV to add braces inside "cases", or should I better avoid such style and rework the patch? Signed-off-by: Pavel Emelyanov Signed-off-by: David S. Miller --- net/netlabel/netlabel_unlabeled.c | 28 ++++++++++++++++++---------- 1 file changed, 18 insertions(+), 10 deletions(-) diff --git a/net/netlabel/netlabel_unlabeled.c b/net/netlabel/netlabel_unlabeled.c index 42e81fd8cc49..3587874d64ec 100644 --- a/net/netlabel/netlabel_unlabeled.c +++ b/net/netlabel/netlabel_unlabeled.c @@ -617,8 +617,6 @@ static int netlbl_unlhsh_add(struct net *net, int ifindex; struct net_device *dev; struct netlbl_unlhsh_iface *iface; - struct in_addr *addr4, *mask4; - struct in6_addr *addr6, *mask6; struct audit_buffer *audit_buf = NULL; char *secctx = NULL; u32 secctx_len; @@ -651,7 +649,9 @@ static int netlbl_unlhsh_add(struct net *net, audit_buf = netlbl_audit_start_common(AUDIT_MAC_UNLBL_STCADD, audit_info); switch (addr_len) { - case sizeof(struct in_addr): + case sizeof(struct in_addr): { + struct in_addr *addr4, *mask4; + addr4 = (struct in_addr *)addr; mask4 = (struct in_addr *)mask; ret_val = netlbl_unlhsh_add_addr4(iface, addr4, mask4, secid); @@ -661,8 +661,11 @@ static int netlbl_unlhsh_add(struct net *net, addr4->s_addr, mask4->s_addr); break; + } #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) - case sizeof(struct in6_addr): + case sizeof(struct in6_addr): { + struct in6_addr *addr6, *mask6; + addr6 = (struct in6_addr *)addr; mask6 = (struct in6_addr *)mask; ret_val = netlbl_unlhsh_add_addr6(iface, addr6, mask6, secid); @@ -671,6 +674,7 @@ static int netlbl_unlhsh_add(struct net *net, dev_name, addr6, mask6); break; + } #endif /* IPv6 */ default: ret_val = -EINVAL; @@ -1741,10 +1745,6 @@ int netlbl_unlabel_getattr(const struct sk_buff *skb, u16 family, struct netlbl_lsm_secattr *secattr) { - struct iphdr *hdr4; - struct ipv6hdr *hdr6; - struct netlbl_unlhsh_addr4 *addr4; - struct netlbl_unlhsh_addr6 *addr6; struct netlbl_unlhsh_iface *iface; rcu_read_lock(); @@ -1752,21 +1752,29 @@ int netlbl_unlabel_getattr(const struct sk_buff *skb, if (iface == NULL) goto unlabel_getattr_nolabel; switch (family) { - case PF_INET: + case PF_INET: { + struct iphdr *hdr4; + struct netlbl_unlhsh_addr4 *addr4; + hdr4 = ip_hdr(skb); addr4 = netlbl_unlhsh_search_addr4(hdr4->saddr, iface); if (addr4 == NULL) goto unlabel_getattr_nolabel; secattr->attr.secid = addr4->secid; break; + } #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) - case PF_INET6: + case PF_INET6: { + struct ipv6hdr *hdr6; + struct netlbl_unlhsh_addr6 *addr6; + hdr6 = ipv6_hdr(skb); addr6 = netlbl_unlhsh_search_addr6(&hdr6->saddr, iface); if (addr6 == NULL) goto unlabel_getattr_nolabel; secattr->attr.secid = addr6->secid; break; + } #endif /* IPv6 */ default: goto unlabel_getattr_nolabel; -- cgit v1.2.3