use error to detect lockfile open failures vs. max connections reached

and report an appropriate error message

1 files changed, 4 insertions, 1 deletions

diff --git a/connection.c b/connection.c
index 1025c8fc..ec726075 100644
--- a/connection.c
+++ b/connection.c
@@ -29,7 +29,7 @@ int claim_connection(char *fname,int max_connections)
 
 	if (max_connections <= 0)
 		return 1;
-	
+
 	fd = open(fname,O_RDWR|O_CREAT, 0600);
 
 	if (fd == -1) {
@@ -41,6 +41,9 @@ int claim_connection(char *fname,int max_connections)
 		if (lock_range(fd, i*4, 4)) return 1;
 	}		
 
+	/* only interested in open failures */
+	errno = 0;
+
 	close(fd);
 	return 0;
 }