local: add LOCAL_RET_* return values for UNIX sockets callbacks

This patch adds the LOCAL_RET_* return values. The return value
LOCAL_RET_STOLEN which allows to leave a client socket open while
waiting for an operation to finish.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/src/local.c b/src/local.c
index 4739e56..feff608 100644
--- a/src/local.c
+++ b/src/local.c
@@ -72,7 +72,7 @@ void local_server_destroy(struct local_server *server)
 }
 
 int do_local_server_step(struct local_server *server, void *data, 
-			 void (*process)(int fd, void *data))
+			 int (*process)(int fd, void *data))
 {
 	int rfd;
 	struct sockaddr_un local;
@@ -82,8 +82,9 @@ int do_local_server_step(struct local_server *server, void *data,
 	if (rfd == -1)
 		return -1;
 
-	process(rfd, data);
-	close(rfd);
+	/* This descriptor will be closed later, we ignore OK and errors */
+	if (process(rfd, data) != LOCAL_RET_STOLEN)
+		close(rfd);
 
 	return 0;
 }