Bug#597130: atd fails when hardlink protection enabled

[Kees Cook]

Package: at
Version: 3.1.12-1
Severity: normal
Tags: patch
User: ubuntu-de...@lists.ubuntu.com
Usertags: origin-ubuntu maverick ubuntu-patch

Ubuntu has applied the attached patch to fix atd to work when running
with hardlink restrictions (Ubuntu's Yama, or with a grsecurity or
OpenWall kernel).

Thanks,

-Kees

-- 
Kees Cook                                            @debian.org

--- at-3.1.12.orig/atd.c
+++ at-3.1.12/atd.c
@@ -252,7 +252,10 @@
      * somebody else has already locked it (a second atd?); log the
      * fact and return.
      */
-    if (link(filename, newname) == -1) {
+    PRIV_START
+    rc = link(filename, newname);
+    PRIV_END
+    if (rc == -1) {
 	if (errno == EEXIST) {
 	    free(mailname);
 	    free(newname);