From 1ce7c55227119b03dccb9cd97139a1d626f0f6e9 Mon Sep 17 00:00:00 2001
From: Till Kamppeter <till.kamppeter@gmail.com>
Date: Mon, 30 Nov 2020 22:23:43 +0100
Subject: [PATCH] libcupsfilters: In pdftops() do not close stdin to not
 confuse pipe creation

---
 cupsfilters/pdftops.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/cupsfilters/pdftops.c b/cupsfilters/pdftops.c
index 78d49f7f6..d12e0cb4c 100644
--- a/cupsfilters/pdftops.c
+++ b/cupsfilters/pdftops.c
@@ -349,8 +349,11 @@ pdftops(int inputfd,         /* I - File descriptor input stream */
   while ((bytes = fread(buffer, 1, sizeof(buffer), inputfp)) > 0)
     bytes = write(fd, buffer, bytes);
 
-  fclose(inputfp);
-  close(inputfd);
+  if (inputfd)
+  {
+    fclose(inputfp);
+    close(inputfd);
+  }
   close(fd);
 
   filename = tempfile;
@@ -1697,6 +1700,9 @@ pdftops(int inputfd,         /* I - File descriptor input stream */
 
   error:
 
+  if (log) log(ld, FILTER_LOGLEVEL_DEBUG,
+	       "pdftops: Closing files ...");
+
   close(outputfd);
 
   //if (tempfile[0])
-- 
2.47.3