[RFC PATCH v2 21/34] lsm: output available LSMs when debugging

[Paul Moore <paul@paul-moore.com>]

This will display all of the LSMs built into the kernel, regardless
of if they are enabled or not.

Signed-off-by: Paul Moore <paul@paul-moore.com>
---
 security/lsm_init.c | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/security/lsm_init.c b/security/lsm_init.c
index 0a8e4c725055..7e794f4515ea 100644
--- a/security/lsm_init.c
+++ b/security/lsm_init.c
@@ -360,6 +360,8 @@ int __init early_security_init(void)
 {
 	struct lsm_info *lsm;
 
+	/* NOTE: lsm_pr_dbg() doesn't work here as lsm_debug is not yet set */
+
 	lsm_early_for_each_raw(lsm) {
 		lsm_enabled_set(lsm, true);
 		lsm_order_append(lsm, "early");
@@ -382,9 +384,24 @@ int __init security_init(void)
 	struct lsm_info **lsm;
 
 	if (lsm_debug) {
-		lsm_pr("built-in LSM list: %s\n", lsm_order_builtin);
+		struct lsm_info *i;
+
+		cnt = 0;
+		lsm_pr("available LSMs: ");
+		lsm_early_for_each_raw(i)
+			lsm_pr_cont("%s%s(E)", (cnt++ ? "," : ""), i->id->name);
+		lsm_for_each_raw(i)
+			lsm_pr_cont("%s%s", (cnt++ ? "," : ""), i->id->name);
+		lsm_pr_cont("\n");
+
+		lsm_pr("built-in LSM config: %s\n", lsm_order_builtin);
+
 		lsm_pr("legacy LSM parameter: %s\n", lsm_order_legacy);
 		lsm_pr("boot LSM parameter: %s\n", lsm_order_cmdline);
+
+		/* see the note about lsm_pr_dbg() in early_security_init() */
+		lsm_early_for_each_raw(i)
+			lsm_pr("enabled LSM early:%s\n", i->id->name);
 	}
 
 	if (lsm_order_cmdline) {
-- 
2.50.1