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authorLennart Poettering <lennart@poettering.net>2012-12-22 19:30:07 +0100
committerLennart Poettering <lennart@poettering.net>2012-12-22 22:17:58 +0100
commit01e10de3c2b9c2944bd86b12fab83d1164d0b64a (patch)
tree5d3a8f55246b255879b2fe199c5321508ba45f83 /src/shared
parent842f3b0fc983d9161e152da5b765008e3e6942a8 (diff)
socket: support socket activation of containers
Diffstat (limited to 'src/shared')
-rw-r--r--src/shared/socket-util.c49
-rw-r--r--src/shared/socket-util.h2
2 files changed, 51 insertions, 0 deletions
diff --git a/src/shared/socket-util.c b/src/shared/socket-util.c
index 42ea545917..56ec99f442 100644
--- a/src/shared/socket-util.c
+++ b/src/shared/socket-util.c
@@ -515,6 +515,55 @@ bool socket_ipv6_is_supported(void) {
return enabled;
}
+bool socket_address_matches_fd(const SocketAddress *a, int fd) {
+ union sockaddr_union sa;
+ socklen_t salen = sizeof(sa), solen;
+ int protocol, type;
+
+ assert(a);
+ assert(fd >= 0);
+
+ if (getsockname(fd, &sa.sa, &salen) < 0)
+ return false;
+
+ if (sa.sa.sa_family != a->sockaddr.sa.sa_family)
+ return false;
+
+ solen = sizeof(type);
+ if (getsockopt(fd, SOL_SOCKET, SO_TYPE, &type, &solen) < 0)
+ return false;
+
+ if (type != a->type)
+ return false;
+
+ if (a->protocol != 0) {
+ solen = sizeof(protocol);
+ if (getsockopt(fd, SOL_SOCKET, SO_PROTOCOL, &protocol, &solen) < 0)
+ return false;
+
+ if (protocol != a->protocol)
+ return false;
+ }
+
+ switch (sa.sa.sa_family) {
+
+ case AF_INET:
+ return sa.in4.sin_port == a->sockaddr.in4.sin_port &&
+ sa.in4.sin_addr.s_addr == a->sockaddr.in4.sin_addr.s_addr;
+
+ case AF_INET6:
+ return sa.in6.sin6_port == a->sockaddr.in6.sin6_port &&
+ memcmp(&sa.in6.sin6_addr, &a->sockaddr.in6.sin6_addr, sizeof(struct in6_addr)) == 0;
+
+ case AF_UNIX:
+ return salen == a->size &&
+ memcmp(sa.un.sun_path, a->sockaddr.un.sun_path, salen - offsetof(struct sockaddr_un, sun_path)) == 0;
+
+ }
+
+ return false;
+}
+
static const char* const netlink_family_table[] = {
[NETLINK_ROUTE] = "route",
[NETLINK_FIREWALL] = "firewall",
diff --git a/src/shared/socket-util.h b/src/shared/socket-util.h
index 04cfb83f5a..771765d323 100644
--- a/src/shared/socket-util.h
+++ b/src/shared/socket-util.h
@@ -86,6 +86,8 @@ int socket_address_listen(
bool socket_address_is(const SocketAddress *a, const char *s, int type);
bool socket_address_is_netlink(const SocketAddress *a, const char *s);
+bool socket_address_matches_fd(const SocketAddress *a, int fd);
+
bool socket_address_equal(const SocketAddress *a, const SocketAddress *b);
bool socket_address_needs_mount(const SocketAddress *a, const char *prefix);