diff options
authorBrandon Casey <>2010-03-15 22:10:06 (GMT)
committerJunio C Hamano <>2010-03-17 02:07:09 (GMT)
commit3aff874af239965ea78c37d14266d6c2233ad431 (patch)
parent8fcaca3ff29a193f50a44bb3d5734a503e0539a6 (diff)
daemon.c: avoid accessing ss_family member of struct sockaddr_storage
When NO_SOCKADDR_STORAGE is set for a platform, either sockaddr_in or sockaddr_in6 is used intead. Neither of which has an ss_family member. They have an sin_family and sin6_family member respectively. Since the addrcmp() function accesses the ss_family member of a sockaddr_storage struct, compilation fails on platforms which define NO_SOCKADDR_STORAGE. Since any sockaddr_* structure can be cast to a struct sockaddr and have its sa_family member read, do so here to workaround this issue. Thanks to Martin Storsjö for pointing out the fix, and Gary Vaughan for drawing attention to the issue. Signed-off-by: Brandon Casey <> Signed-off-by: Junio C Hamano <>
1 files changed, 7 insertions, 4 deletions
diff --git a/daemon.c b/daemon.c
index 3769b6f..2e6766f 100644
--- a/daemon.c
+++ b/daemon.c
@@ -590,14 +590,17 @@ static int execute(struct sockaddr *addr)
static int addrcmp(const struct sockaddr_storage *s1,
const struct sockaddr_storage *s2)
- if (s1->ss_family != s2->ss_family)
- return s1->ss_family - s2->ss_family;
- if (s1->ss_family == AF_INET)
+ const struct sockaddr *sa1 = (const struct sockaddr*) s1;
+ const struct sockaddr *sa2 = (const struct sockaddr*) s2;
+ if (sa1->sa_family != sa2->sa_family)
+ return sa1->sa_family - sa2->sa_family;
+ if (sa1->sa_family == AF_INET)
return memcmp(&((struct sockaddr_in *)s1)->sin_addr,
&((struct sockaddr_in *)s2)->sin_addr,
sizeof(struct in_addr));
#ifndef NO_IPV6
- if (s1->ss_family == AF_INET6)
+ if (sa1->sa_family == AF_INET6)
return memcmp(&((struct sockaddr_in6 *)s1)->sin6_addr,
&((struct sockaddr_in6 *)s2)->sin6_addr,
sizeof(struct in6_addr));