set socket file mode to owner+group R+W

src/ckdb.c

@@ -1265,6 +1265,7 @@ void logmsg(int loglevel, const char *fmt, ...)
 		fprintf(LOGFP, "%s %s", stamp, buf);
 		if (loglevel <= LOG_ERR && errno != 0)
 			fprintf(LOGFP, " with errno %d: %s", errno, strerror(errno));
+		errno = 0;
 		fprintf(LOGFP, "\n");
 		flock(logfd, LOCK_UN);
 	}
@@ -1272,6 +1273,7 @@ void logmsg(int loglevel, const char *fmt, ...)
 		if (loglevel <= LOG_ERR && errno != 0) {
 			fprintf(stderr, "%s %s with errno %d: %s%s\n",
 					stamp, buf, errno, strerror(errno), extra);
+			errno = 0;
 		} else
 			fprintf(stderr, "%s %s%s\n", stamp, buf, extra);
 		fflush(stderr);

src/libckpool.c

@@ -499,6 +499,7 @@ void close_unix_socket(const int sockd, const char *server_path)
 
 int _open_unix_server(const char *server_path, const char *file, const char *func, const int line)
 {
+	mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP; // Owner+Group R+W
 	struct sockaddr_un serveraddr;
 	int sockd = -1, len, ret;
 	struct stat buf;
@@ -546,6 +547,10 @@ int _open_unix_server(const char *server_path, const char *file, const char *fun
 		goto out;
 	}
 
+	ret = chmod(server_path, mode);
+	if (unlikely(ret < 0))
+		LOGERR("Failed to set mode in open_unix_server - continuing");
+
 	ret = listen(sockd, 10);
 	if (unlikely(ret < 0)) {
 		LOGERR("Failed to listen to socket in open_unix_server");