From: Tobias Stoeckmann <tobias@stoeckmann.org>
Date: Mon, 23 Feb 2026 18:57:34 +0000 (+0100)
Subject: lib/pager: Handle dup errors
X-Git-Tag: v2.43-devel~51^2
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4de94662efe7cdb5d4a2bc55662110cb29653177;p=thirdparty%2Futil-linux.git

lib/pager: Handle dup errors

If dup fails, e.g. due to open file descriptor limitations, gracefully
handle the situation and do not start the pager.

Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
---

diff --git a/lib/pager.c b/lib/pager.c
index 3dc213dc9..81111830a 100644
--- a/lib/pager.c
+++ b/lib/pager.c
@@ -249,11 +249,14 @@ void pager_open(void)
 	pager_process.org_out = dup(STDOUT_FILENO);
 	pager_process.org_err = dup(STDERR_FILENO);
 
-	__setup_pager();
+	if (pager_process.org_out != -1 && pager_process.org_err != -1)
+		__setup_pager();
 
 	if (!pager_process.pid) {
-		close(pager_process.org_out);
-		close(pager_process.org_err);
+		if (pager_process.org_out != -1)
+			close(pager_process.org_out);
+		if (pager_process.org_err != -1)
+			close(pager_process.org_err);
 		memset(&pager_process, 0, sizeof(pager_process));
 	}
 }