rc_getline keeps expanding it's malloced buffer until it has read a whole line or EOF. All functions which read into static buffers have been changed to use fhis function to avoid any potential overflows and to ensure we really do read a long long config line.

src/rc/runscript.c

@@ -451,7 +451,7 @@ static bool svc_exec (const char *arg1, const char *arg2)
 	}
 
 	selfd = MAX (master_tty, signal_pipe[0]) + 1;
-	buffer = xmalloc (sizeof (char) * RC_LINEBUFFER);
+	buffer = xmalloc (sizeof (char) * BUFSIZ);
 	while (1) {
 		FD_ZERO (&rset);
 		FD_SET (signal_pipe[0], &rset);
@@ -467,7 +467,7 @@ static bool svc_exec (const char *arg1, const char *arg2)
 
 		if (s > 0) {
 			if (master_tty >= 0 && FD_ISSET (master_tty, &rset)) {
-				bytes = read (master_tty, buffer, RC_LINEBUFFER);
+				bytes = read (master_tty, buffer, BUFSIZ);
 				write_prefix (buffer, bytes, &prefixed);
 			}