empty stdin behaviour fixed

1 files changed, 12 insertions, 7 deletions

diff --git a/rpt.c b/rpt.c
index b6d65be..6642491 100644
--- a/rpt.c
+++ b/rpt.c
@@ -17,7 +17,7 @@
 
 /* Clone of stdin.  Used to perform lseek(2) calls between each child
    process. */
-FILE *stdin_clone;
+FILE *stdin_clone = NULL;
 
 /* File descriptor associated to the clone of stdin. */
 int clone_fd;
@@ -69,12 +69,15 @@ exec_child(char **argv)
 {
 	int status;
 
-	status = lseek(clone_fd, 0, L_SET);
-
-	if (status < 0)
+	if (stdin_clone)
 	{
-		perror("rpt[child process]");
-		exit(4);
+		status = lseek(clone_fd, 0, L_SET);
+
+		if (status < 0)
+		{
+			perror("rpt[child process]");
+			exit(4);
+		}
 	}
 
 	status = dup2(clone_fd, STDIN_FILENO);
@@ -240,6 +243,8 @@ main(int argc, char* argv[])
 
 	repeat_cmd(argv + optind, count, handle_error_f);
 
-	fclose(stdin_clone);
+	if (stdin_clone)
+		fclose(stdin_clone);
+
 	return 0;
 }