io: fix Linux include and UNIX_PATH_MAX fallback

This makes it easier to compile against other C libraries than glibc.
esmil · Jan 7, 2016 · 9f5ebd9 · 9f5ebd9
1 parent c5dffb8
commit 9f5ebd9
Showing 1 changed file with 5 additions and 4 deletions.
diff --git a/lem/io/core.c b/lem/io/core.c
@@ -37,14 +37,15 @@
 #include <sys/ucred.h>
 #include <netinet/in.h>
 extern char **environ;
-#ifndef UNIX_PATH_MAX
-#define UNIX_PATH_MAX 104
-#endif
 #else
-#include <linux/un.h>
+#include <sys/un.h>
 #include <sys/sendfile.h>
 #endif
 
+#ifndef UNIX_PATH_MAX
+#define UNIX_PATH_MAX  (sizeof ((struct sockaddr_un *)0)->sun_path)
+#endif
+
 #include <lem-parsers.h>
 
 static int