From: Ludwig Nussel <ludwig.nussel@suse.de>
Date: Tue, 5 Jun 2012 13:31:24 +0000 (+0200)
Subject: su: preserve errno in cleanup_pam()
X-Git-Tag: v2.22-rc1~316
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=8ce7dfa341fa969ba08438f97b0d875dbb78d75d;p=thirdparty%2Futil-linux.git

su: preserve errno in cleanup_pam()

Signed-off-by: Ludwig Nussel <ludwig.nussel@suse.de>
---

diff --git a/login-utils/su.c b/login-utils/su.c
index 944d6558e8..0f535b9b72 100644
--- a/login-utils/su.c
+++ b/login-utils/su.c
@@ -153,6 +153,8 @@ static struct pam_conv conv =
 static void
 cleanup_pam (int retcode)
 {
+  int saved_errno = errno;
+
   if (_pam_session_opened)
     pam_close_session (pamh, 0);
 
@@ -160,6 +162,8 @@ cleanup_pam (int retcode)
     pam_setcred (pamh, PAM_DELETE_CRED | PAM_SILENT);
 
   pam_end(pamh, retcode);
+
+  errno = saved_errno;
 }
 
 /* Signal handler for parent process.  */