X-Git-Url: http://git.tuebingen.mpg.de/?a=blobdiff_plain;f=net.c;h=d1dcba0a26a27472606c48f66d17296faf04fcd7;hb=f8cc8caab7176a65731520f3130dc059e5d5773e;hp=ba19408e11337a82aaa380d2e8fe96ceca0c5673;hpb=4fbe16430b4776814128d7110682c69d1b047c57;p=paraslash.git

diff --git a/net.c b/net.c
index ba19408e..d1dcba0a 100644
--- a/net.c
+++ b/net.c
@@ -886,14 +886,13 @@ int dccp_available_ccids(uint8_t **ccid_array)
  * The first call to this function tries to bind a socket to the abstract name
  * space. The result of this test is stored in a static variable. Subsequent
  * calls read this variable and create abstract sockets on systems that support
- * them.
+ * them. If a NULL pointer is passed as the name, the function only
+ * initializes the static variable.
  */
 static int init_unix_addr(struct sockaddr_un *u, const char *name)
 {
 	static int use_abstract;
 
-	if (strlen(name) + 1 >= UNIX_PATH_MAX)
-		return -E_NAME_TOO_LONG;
 	memset(u->sun_path, 0, UNIX_PATH_MAX);
 	u->sun_family = PF_UNIX;
 	if (use_abstract == 0) { /* executed only once */
@@ -907,6 +906,10 @@ static int init_unix_addr(struct sockaddr_un *u, const char *name)
 		PARA_NOTICE_LOG("%susing abstract socket namespace\n",
 			use_abstract == 1? "" : "not ");
 	}
+	if (!name)
+		return 0;
+	if (strlen(name) + 1 >= UNIX_PATH_MAX)
+		return -E_NAME_TOO_LONG;
 	strcpy(u->sun_path + (use_abstract == 1? 1 : 0), name);
 	return 1;
 }
@@ -931,7 +934,7 @@ int create_local_socket(const char *name)
 	int fd, ret;
 
 	ret = init_unix_addr(&unix_addr, name);
-	if (ret < 0)
+	if (ret <= 0) /* error, or name was NULL */
 		return ret;
 	ret = socket(PF_UNIX, SOCK_STREAM, 0);
 	if (ret < 0)