From cd8143209fa965adbcbdaca1036317969af27846 Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Thu, 7 Sep 2023 00:45:30 +0200
Subject: shell: fix endless loop after redirection

---
 src/cmd/shell/shell.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/cmd/shell/shell.c b/src/cmd/shell/shell.c
index 3f33756..1387e48 100644
--- a/src/cmd/shell/shell.c
+++ b/src/cmd/shell/shell.c
@@ -115,7 +115,7 @@ void run_args(int argc, char **argv, struct redir *redir) {
 			close(p[1]);
 			for (;;) {
 				long len = _sys_read(p[0], buf, buflen, 0);
-				if (len < 0) exit(0);
+				if (len <= 0) exit(0);
 				fwrite(buf, 1, len, f);
 				if (ferror(f)) exit(0);
 			}
-- 
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