diff mbox series

[3/6] selinux: improve debug configuration

Message ID 20230818151220.166215-2-cgzones@googlemail.com (mailing list archive)
State Accepted
Delegated to: Paul Moore
Headers show
Series [1/6] selinux: print sum of chain lengths^2 for hash tables | expand

Commit Message

Christian Göttsche Aug. 18, 2023, 3:12 p.m. UTC
If the SELinux debug configuration is enabled define the macro DEBUG
such that pr_debug() calls are always enabled, regardless of
CONFIG_DYNAMIC_DEBUG, since those message are the main reason for this
configuration in the first place.

Mention example usage in case CONFIG_DYNAMIC_DEBUG is enabled in the
help section of the configuration.

Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
---
 security/selinux/Kconfig  | 10 ++++++++++
 security/selinux/Makefile |  2 ++
 2 files changed, 12 insertions(+)

Comments

Stephen Smalley Sept. 8, 2023, 4:08 p.m. UTC | #1
On Fri, Aug 18, 2023 at 11:12 AM Christian Göttsche
<cgzones@googlemail.com> wrote:
>
> If the SELinux debug configuration is enabled define the macro DEBUG
> such that pr_debug() calls are always enabled, regardless of
> CONFIG_DYNAMIC_DEBUG, since those message are the main reason for this
> configuration in the first place.
>
> Mention example usage in case CONFIG_DYNAMIC_DEBUG is enabled in the
> help section of the configuration.
>
> Signed-off-by: Christian Göttsche <cgzones@googlemail.com>

Reviewed-by: Stephen Smalley <stephen.smalley.work@gmail.com>
Paul Moore Sept. 13, 2023, 5:46 p.m. UTC | #2
On Aug 18, 2023 Stephen Smalley <stephen.smalley.work@gmail.com> wrote:
> 
> If the SELinux debug configuration is enabled define the macro DEBUG
> such that pr_debug() calls are always enabled, regardless of
> CONFIG_DYNAMIC_DEBUG, since those message are the main reason for this
> configuration in the first place.
> 
> Mention example usage in case CONFIG_DYNAMIC_DEBUG is enabled in the
> help section of the configuration.
> 
> Signed-off-by: Christian Göttsche <cgzones@googlemail.com>
> Reviewed-by: Stephen Smalley <stephen.smalley.work@gmail.com>
> ---
>  security/selinux/Kconfig  | 10 ++++++++++
>  security/selinux/Makefile |  2 ++
>  2 files changed, 12 insertions(+)

Merged into selinux/next, thanks!

--
paul-moore.com
diff mbox series

Patch

diff --git a/security/selinux/Kconfig b/security/selinux/Kconfig
index d30348fbe0df..61abc1e094a8 100644
--- a/security/selinux/Kconfig
+++ b/security/selinux/Kconfig
@@ -77,3 +77,13 @@  config SECURITY_SELINUX_DEBUG
 	  This enables debugging code designed to help SELinux kernel
 	  developers, unless you know what this does in the kernel code you
 	  should leave this disabled.
+
+	  To fine control the messages to be printed enable
+	  CONFIG_DYNAMIC_DEBUG and see
+	  Documentation/admin-guide/dynamic-debug-howto.rst for additional
+	  information.
+
+	  Example usage:
+
+		echo -n 'file "security/selinux/*" +p' > \
+			/proc/dynamic_debug/control
diff --git a/security/selinux/Makefile b/security/selinux/Makefile
index 836379639058..c47519ed8156 100644
--- a/security/selinux/Makefile
+++ b/security/selinux/Makefile
@@ -12,6 +12,8 @@  obj-$(CONFIG_SECURITY_SELINUX) := selinux.o
 
 ccflags-y := -I$(srctree)/security/selinux -I$(srctree)/security/selinux/include
 
+ccflags-$(CONFIG_SECURITY_SELINUX_DEBUG) += -DDEBUG
+
 selinux-y := avc.o hooks.o selinuxfs.o netlink.o nlmsgtab.o netif.o \
 	     netnode.o netport.o status.o \
 	     ss/ebitmap.o ss/hashtab.o ss/symtab.o ss/sidtab.o ss/avtab.o \