From: Bruno Haible <bruno@clisp.org>
Date: Wed, 27 May 2020 18:09:49 +0000 (+0200)
Subject: truncate: Make more robust in multithreaded applications.
X-Git-Tag: v1.0~4035
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=cc5be347286af59f809efa76f7f4fb0e18a0d782;p=thirdparty%2Fgnulib.git

truncate: Make more robust in multithreaded applications.

* lib/truncate.c (truncate): Pass an O_CLOEXEC flag to open().
---

diff --git a/ChangeLog b/ChangeLog
index a3543f8a31..7b837df323 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2020-05-28  Bruno Haible  <bruno@clisp.org>
+
+	truncate: Make more robust in multithreaded applications.
+	* lib/truncate.c (truncate): Pass an O_CLOEXEC flag to open().
+
 2020-05-28  Bruno Haible  <bruno@clisp.org>
 
 	pagealign_alloc: Make more robust in multithreaded applications.
diff --git a/lib/truncate.c b/lib/truncate.c
index 456f7aa486..b04f7c7841 100644
--- a/lib/truncate.c
+++ b/lib/truncate.c
@@ -29,13 +29,13 @@ truncate (const char *filename, off_t length)
 
   if (length == 0)
     {
-      fd = open (filename, O_WRONLY | O_TRUNC);
+      fd = open (filename, O_WRONLY | O_TRUNC | O_CLOEXEC);
       if (fd < 0)
         return -1;
     }
   else
     {
-      fd = open (filename, O_WRONLY);
+      fd = open (filename, O_WRONLY | O_CLOEXEC);
       if (fd < 0)
         return -1;
       if (ftruncate (fd, length) < 0)