Fix coredump not being able to be enabled

Fix resource hard limit being set to zero, since it made it impossible
to reset the limit to a higher value.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1977722
Signed-off-by: Antonio Torres <antorres@redhat.com>

freeradius-Fix-resource-hard-limit-error.patch

@@ -0,0 +1,32 @@
+commit 1ce4508c92493cf03ea1b3c42e83540b387884fa
+Author: Antonio Torres <antorres@redhat.com>
+Date:   Fri Jul 2 07:12:48 2021 -0400
+Subject: [PATCH] debug: don't set resource hard limit to zero
+
+    Setting the resource hard limit to zero is irreversible, meaning if it
+    is set to zero then there is no way to set it higher. This means
+    enabling core dump is not possible, since setting a new resource limit
+    for RLIMIT_CORE would fail. By only setting the soft limit to zero, we
+    can disable and enable core dumps without failures.
+
+    This fix is present in both main and 3.0.x upstream branches.
+    
+    Ticket in RHEL Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1977572
+    Signed-off-by: Antonio Torres antorres@redhat.com
+---
+ src/lib/debug.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/lib/debug.c b/src/lib/debug.c
+index 576bcb2a65..6330c9cb66 100644
+--- a/src/lib/debug.c
++++ b/src/lib/debug.c
+@@ -599,7 +599,7 @@ int fr_set_dumpable(bool allow_core_dumps)
+ 		struct rlimit no_core;
+ 
+ 		no_core.rlim_cur = 0;
+-		no_core.rlim_max = 0;
++		no_core.rlim_max = core_limits.rlim_max;
+ 
+ 		if (setrlimit(RLIMIT_CORE, &no_core) < 0) {
+ 			fr_strerror_printf("Failed disabling core dumps: %s", fr_syserror(errno));

freeradius.spec

@@ -1,7 +1,7 @@
 Summary: High-performance and highly configurable free RADIUS server
 Name: freeradius
 Version: 3.0.21
-Release: 14%{?dist}
+Release: 15%{?dist}
 License: GPLv2+ and LGPLv2+
 URL: http://www.freeradius.org/
 
@@ -25,6 +25,7 @@ Patch2: freeradius-Use-system-crypto-policy-by-default.patch
 Patch3: freeradius-bootstrap-create-only.patch
 Patch4: freeradius-no-buildtime-cert-gen.patch
 Patch5: freeradius-bootstrap-make-permissions.patch
+Patch6: freeradius-Fix-resource-hard-limit-error.patch
 
 %global docdir %{?_pkgdocdir}%{!?_pkgdocdir:%{_docdir}/%{name}-%{version}}
 
@@ -206,6 +207,7 @@ This plugin provides the REST support for the FreeRADIUS server project.
 %patch3 -p1
 %patch4 -p1
 %patch5 -p1
+%patch6 -p1
 
 %build
 # Force compile/link options, extra security for network facing daemon
@@ -838,6 +840,10 @@ exit 0
 %attr(640,root,radiusd) %config(noreplace) /etc/raddb/mods-available/rest
 
 %changelog
+Mon Jul 19 2021 Antonio Torres <antorres@redhat.com> - 3.0.21-15
+- Fix coredump not being able to be enabled
+  Resolves: bz#1977722
+
 * Wed Jun 30 2021 Antonio Torres <antorres@redhat.com> - 3.0.21-14
 - Fix Python3.8 not being linked correctly
   Related: rhbz#1948622