From 50b2ff1bc47baacb8e9882b2b2a74b240ddbeecf Mon Sep 17 00:00:00 2001 From: Paul Moore Date: Tue, 21 Apr 2009 10:04:22 +0000 Subject: netlabel: Always remove the correct address selector The NetLabel address selector mechanism has a problem where it can get mistakenly remove the wrong selector when similar addresses are used. The problem is caused when multiple addresses are configured that have different netmasks but the same address, e.g. 127.0.0.0/8 and 127.0.0.0/24. This patch fixes the problem. Reported-by: Etienne Basset Signed-off-by: Paul Moore Acked-by: James Morris Tested-by: Etienne Basset Signed-off-by: David S. Miller --- net/netlabel/netlabel_addrlist.c | 26 ++++++++++---------------- 1 file changed, 10 insertions(+), 16 deletions(-) diff --git a/net/netlabel/netlabel_addrlist.c b/net/netlabel/netlabel_addrlist.c index 834c6eb7f48..c0519139679 100644 --- a/net/netlabel/netlabel_addrlist.c +++ b/net/netlabel/netlabel_addrlist.c @@ -256,13 +256,11 @@ struct netlbl_af4list *netlbl_af4list_remove(__be32 addr, __be32 mask, { struct netlbl_af4list *entry; - entry = netlbl_af4list_search(addr, head); - if (entry != NULL && entry->addr == addr && entry->mask == mask) { - netlbl_af4list_remove_entry(entry); - return entry; - } - - return NULL; + entry = netlbl_af4list_search_exact(addr, mask, head); + if (entry == NULL) + return NULL; + netlbl_af4list_remove_entry(entry); + return entry; } #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) @@ -299,15 +297,11 @@ struct netlbl_af6list *netlbl_af6list_remove(const struct in6_addr *addr, { struct netlbl_af6list *entry; - entry = netlbl_af6list_search(addr, head); - if (entry != NULL && - ipv6_addr_equal(&entry->addr, addr) && - ipv6_addr_equal(&entry->mask, mask)) { - netlbl_af6list_remove_entry(entry); - return entry; - } - - return NULL; + entry = netlbl_af6list_search_exact(addr, mask, head); + if (entry == NULL) + return NULL; + netlbl_af6list_remove_entry(entry); + return entry; } #endif /* IPv6 */ -- cgit v1.2.3-18-g5258