support listening on unix domain sockets

This trivial patch addresses bug 1639. When a bind_to_address argument starts with a slash, assume that it is the address of a Unix domain socket. git-svn-id: https://svn.musicpd.org/mpd/trunk@7235 09075e82-0dd4-0310-85a5-a0d7c8717e4f

support listening on unix domain sockets
d4f319de · Max Kellermann · Eric Wong · 623a86f3 · d4f319de · d4f319de
Commit d4f319de authored Apr 12, 2008 by Max Kellermann Committed by Eric Wong Apr 12, 2008
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listen.c src/listen.c +16 -0

os_compat.h src/os_compat.h +1 -0

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--- a/src/listen.c
+++ b/src/listen.c
@@ -157,6 +157,22 @@ static void parseListenConfigParam(unsigned int port, ConfigParam * param)
 #endif
 			BINDERROR();
 		}
+	} else if (param->value[0] == '/') {
+		size_t path_length;
+		struct sockaddr_un sun;
+
+		path_length = strlen(param->value);
+		if (path_length >= sizeof(sun.sun_path))
+			FATAL("unix socket path is too long\n");
+
+		sun.sun_family = AF_UNIX;
+		memcpy(sun.sun_path, param->value, path_length + 1);
+
+		addrp = (const struct sockaddr *)&sun;
+		addrlen = sizeof(sun);
+
+		if (establishListen(addrp, addrlen) < 0)
+			BINDERROR();
 	} else {
 		struct hostent *he;
 		DEBUG("binding to address for %s\n", param->value);

--- a/src/os_compat.h
+++ b/src/os_compat.h
@@ -64,6 +64,7 @@
 #include <netdb.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>
+#include <sys/un.h>
 #include <pwd.h>
 #include <grp.h>
 #include <limits.h>