Fix coredump not being able to be enabled

If resource hard limit is set to zero, then it cannot be raised again,
and this causes coredump to not being able to be enabled.

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: 3.0.23
-Release: 4%{?dist}
+Release: 5%{?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}}
 
@@ -207,6 +208,7 @@ 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
@@ -894,6 +896,9 @@ exit 0
 %attr(640,root,radiusd) %config(noreplace) /etc/raddb/mods-available/rest
 
 %changelog
+* Thu Jul 15 2021 Antonio Torres <antorres@redhat.com> - 3.0.23-5
+- Fix coredump not being able to be enabled
+
 * Sat Jul 10 2021 Björn Esser <besser82@fedoraproject.org> - 3.0.23-4
 - Rebuild for versioned symbols in json-c