[elinks-users] elinks dies with weird message if ~/.elinks not writeable

[Mikel Ward]

Hi

In elinks 0.11 and 0.12, I get this error message on startup:
  ERROR at interlink.c:329: The call to connect() failed: 13 (Permission denied)

Which doesn't give me enough information to understand the cause.

Running it inside strace shows that it couldn't create a Unix domain
socket in ~/.elinks because that directory wasn't writeable by me.

The attached patch makes it print this instead:
  ERROR at interlink.c:343: connect() failed on /home/mward/.elinks/socket0: 13 
(Permission denied)

I hope you can use it or implement something like it.

Thanks

Mike


diff -Naur elinks-0.12-20081014/src/main/interlink.c elinks-0.12-20081014.socketerror/src/main/interlink.c
--- elinks-0.12-20081014/src/main/interlink.c	2008-10-14 09:40:03.000000000 +1100
+++ elinks-0.12-20081014.socketerror/src/main/interlink.c	2008-10-14 13:21:22.000000000 +1100
@@ -324,10 +324,24 @@
 #define CONNECT_TRIES_DELAY		50000
 
 static void
-report_af_unix_error(unsigned char *function, int error)
+report_af_unix_error(unsigned char *function, int error, struct socket_info *info)
 {
-	ERROR(gettext("The call to %s failed: %d (%s)"),
-	      function, error, (unsigned char *) strerror(error));
+	struct sockaddr_un *addr = NULL;
+	const char *path = NULL;
+	
+	if (info != NULL) {
+		addr = (struct sockaddr_un *)info->addr;
+		if (addr != NULL) {
+			path = addr->sun_path;
+		}
+	}
+
+	if (path == NULL) {
+		path = "(null)";
+	}
+
+	ERROR(gettext("%s failed on %s: %d (%s)"),
+	      function, path, error, (unsigned char *) strerror(error));
 }
 
 /* Called when we receive a connection on listening socket. */
@@ -345,7 +359,7 @@
 	memset(info->addr, 0, l);
 	ns = accept(info->fd, info->addr, &l);
 	if (ns < 0) {
-		report_af_unix_error("accept()", errno);
+		report_af_unix_error("accept()", errno, info);
 		return;
 	}
 
@@ -384,7 +398,7 @@
 	while (1) {
 		s_info_listen.fd = socket(pf, SOCK_STREAM, 0);
 		if (s_info_listen.fd == -1) {
-			report_af_unix_error("socket()", errno);
+			report_af_unix_error("socket()", errno, &s_info_listen);
 			goto free_and_error;
 		}
 
@@ -392,9 +406,10 @@
 
 		if (bind(s_info_listen.fd, s_info_listen.addr, s_info_listen.size) >= 0)
 			break;
-
-		if (errno != EADDRINUSE)
-			report_af_unix_error("bind()", errno);
+ 
+		if (errno != EADDRINUSE) {
+			report_af_unix_error("bind()", errno, &s_info_listen);
+		}
 
 		++attempts;
 
@@ -415,7 +430,7 @@
 	s_info_accept.fd = s_info_listen.fd;
 
 	if (listen(s_info_listen.fd, LISTEN_BACKLOG)) {
-		report_af_unix_error("listen()", errno);
+		report_af_unix_error("listen()", errno, &s_info_listen);
 		goto free_and_error;
 	}
 
@@ -446,7 +461,7 @@
 
 		s_info_connect.fd = socket(pf, SOCK_STREAM, 0);
 		if (s_info_connect.fd == -1) {
-			report_af_unix_error("socket()", errno);
+			report_af_unix_error("socket()", errno, &s_info_connect);
 			break;
 		}
 
@@ -458,7 +473,7 @@
 		close(s_info_connect.fd);
 
 		if (saved_errno != ECONNREFUSED && saved_errno != ENOENT) {
-			report_af_unix_error("connect()", errno);
+			report_af_unix_error("connect()", errno, &s_info_connect);
 			break;
 		}
 

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