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From: Casey Schaufler <casey@schaufler-ca.com>
To: James Morris <jmorris@namei.org>,
	LSM <linux-security-module@vger.kernel.org>,
	LKLM <linux-kernel@vger.kernel.org>,
	SE Linux <selinux@tycho.nsa.gov>
Cc: "John Johansen" <john.johansen@canonical.com>,
	"Kees Cook" <keescook@chromium.org>,
	"Tetsuo Handa" <penguin-kernel@i-love.sakura.ne.jp>,
	"Paul Moore" <paul@paul-moore.com>,
	"linux-fsdevel@vger.kernel.org" <linux-fsdevel@vger.kernel.org>,
	"Stephen Smalley" <sds@tycho.nsa.gov>,
	"Alexey Dobriyan" <adobriyan@gmail.com>,
	"Mickaël Salaün" <mic@digikod.net>,
	"Salvatore Mesoraca" <s.mesoraca16@gmail.com>
Subject: [PATCH v5 16/38] LoadPin: Initialize as ordered LSM
Date: Mon, 26 Nov 2018 15:39:04 -0800
Message-ID: <4145222c-9ae7-4d97-32c3-f0f860a1f401@schaufler-ca.com> (raw)
In-Reply-To: <50db058a-7dde-441b-a7f9-f6837fe8b69f@schaufler-ca.com>

This converts LoadPin from being a direct "minor" LSM into an ordered LSM.

Signed-off-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Casey Schaufler <casey@schaufler-ca.com>
---
 include/linux/lsm_hooks.h  |  5 -----
 security/Kconfig           | 39 +--------------------------------------
 security/loadpin/loadpin.c |  8 +++++++-
 security/security.c        |  1 -
 4 files changed, 8 insertions(+), 45 deletions(-)

diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h
index 7d04a0c32011..b565c0c10269 100644
--- a/include/linux/lsm_hooks.h
+++ b/include/linux/lsm_hooks.h
@@ -2092,10 +2092,5 @@ extern void __init yama_add_hooks(void);
 #else
 static inline void __init yama_add_hooks(void) { }
 #endif
-#ifdef CONFIG_SECURITY_LOADPIN
-void __init loadpin_add_hooks(void);
-#else
-static inline void loadpin_add_hooks(void) { };
-#endif
 
 #endif /* ! __LINUX_LSM_HOOKS_H */
diff --git a/security/Kconfig b/security/Kconfig
index 41aa0be6142f..566d54215cbe 100644
--- a/security/Kconfig
+++ b/security/Kconfig
@@ -239,46 +239,9 @@ source security/yama/Kconfig
 
 source security/integrity/Kconfig
 
-choice
-	prompt "Default security module"
-	default DEFAULT_SECURITY_SELINUX if SECURITY_SELINUX
-	default DEFAULT_SECURITY_SMACK if SECURITY_SMACK
-	default DEFAULT_SECURITY_TOMOYO if SECURITY_TOMOYO
-	default DEFAULT_SECURITY_APPARMOR if SECURITY_APPARMOR
-	default DEFAULT_SECURITY_DAC
-
-	help
-	  Select the security module that will be used by default if the
-	  kernel parameter security= is not specified.
-
-	config DEFAULT_SECURITY_SELINUX
-		bool "SELinux" if SECURITY_SELINUX=y
-
-	config DEFAULT_SECURITY_SMACK
-		bool "Simplified Mandatory Access Control" if SECURITY_SMACK=y
-
-	config DEFAULT_SECURITY_TOMOYO
-		bool "TOMOYO" if SECURITY_TOMOYO=y
-
-	config DEFAULT_SECURITY_APPARMOR
-		bool "AppArmor" if SECURITY_APPARMOR=y
-
-	config DEFAULT_SECURITY_DAC
-		bool "Unix Discretionary Access Controls"
-
-endchoice
-
-config DEFAULT_SECURITY
-	string
-	default "selinux" if DEFAULT_SECURITY_SELINUX
-	default "smack" if DEFAULT_SECURITY_SMACK
-	default "tomoyo" if DEFAULT_SECURITY_TOMOYO
-	default "apparmor" if DEFAULT_SECURITY_APPARMOR
-	default "" if DEFAULT_SECURITY_DAC
-
 config LSM
 	string "Ordered list of enabled LSMs"
-	default "integrity"
+	default "loadpin,integrity,selinux,smack,tomoyo,apparmor"
 	help
 	  A comma-separated list of LSMs, in initialization order.
 	  Any LSMs left off this list will be ignored. This can be
diff --git a/security/loadpin/loadpin.c b/security/loadpin/loadpin.c
index 48f39631b370..055fb0a64169 100644
--- a/security/loadpin/loadpin.c
+++ b/security/loadpin/loadpin.c
@@ -187,13 +187,19 @@ static struct security_hook_list loadpin_hooks[] __lsm_ro_after_init = {
 	LSM_HOOK_INIT(kernel_load_data, loadpin_load_data),
 };
 
-void __init loadpin_add_hooks(void)
+static int __init loadpin_init(void)
 {
 	pr_info("ready to pin (currently %senforcing)\n",
 		enforce ? "" : "not ");
 	security_add_hooks(loadpin_hooks, ARRAY_SIZE(loadpin_hooks), "loadpin");
+	return 0;
 }
 
+DEFINE_LSM(loadpin) = {
+	.name = "loadpin",
+	.init = loadpin_init,
+};
+
 /* Should not be mutable after boot, so not listed in sysfs (perm == 0). */
 module_param(enforce, int, 0);
 MODULE_PARM_DESC(enforce, "Enforce module/firmware pinning");
diff --git a/security/security.c b/security/security.c
index 3fac0ff39944..0c092d62cc47 100644
--- a/security/security.c
+++ b/security/security.c
@@ -275,7 +275,6 @@ int __init security_init(void)
 	 */
 	capability_add_hooks();
 	yama_add_hooks();
-	loadpin_add_hooks();
 
 	/* Load LSMs in specified order. */
 	ordered_lsm_init();
-- 
2.14.5



  parent reply index

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-26 23:22 [PATCH v5 00/38] LSM: Module stacking for SARA and Landlock Casey Schaufler
2018-11-26 23:26 ` [PATCH v5 01/38] LSM: Introduce LSM_FLAG_LEGACY_MAJOR Casey Schaufler
2018-11-27  5:34   ` Kees Cook
2018-11-27 13:51     ` Ondrej Mosnacek
2018-11-27 19:27     ` Casey Schaufler
2018-11-26 23:27 ` [PATCH v5 02/38] LSM: Provide separate ordered initialization Casey Schaufler
2018-11-26 23:28 ` [PATCH v5 03/38] LSM: Plumb visibility into optional "enabled" state Casey Schaufler
2018-11-26 23:29 ` [PATCH v5 04/38] LSM: Lift LSM selection out of individual LSMs Casey Schaufler
2018-11-26 23:30 ` [PATCH v5 05/38] LSM: Build ordered list of LSMs to initialize Casey Schaufler
2018-11-26 23:31 ` [PATCH v5 06/38] LSM: Introduce CONFIG_LSM Casey Schaufler
2018-11-26 23:31 ` [PATCH v5 07/38] LSM: Introduce "lsm=" for boottime LSM selection Casey Schaufler
2018-11-26 23:32 ` [PATCH v5 08/38] LSM: Tie enabling logic to presence in ordered list Casey Schaufler
2018-11-26 23:33 ` [PATCH v5 09/38] LSM: Prepare for reorganizing "security=" logic Casey Schaufler
2018-11-26 23:34 ` [PATCH v5 10/38] LSM: Refactor "security=" in terms of enable/disable Casey Schaufler
2018-11-26 23:34 ` [PATCH v5 11/38] LSM: Separate idea of "major" LSM from "exclusive" LSM Casey Schaufler
2018-11-26 23:35 ` [PATCH v5 12/38] apparmor: Remove SECURITY_APPARMOR_BOOTPARAM_VALUE Casey Schaufler
2018-11-26 23:36 ` [PATCH v5 13/38] selinux: Remove SECURITY_SELINUX_BOOTPARAM_VALUE Casey Schaufler
2018-11-26 23:37 ` [PATCH v5 14/38] LSM: Add all exclusive LSMs to ordered initialization Casey Schaufler
2018-11-26 23:38 ` [PATCH v5 15/38] LSM: Split LSM preparation from initialization Casey Schaufler
2018-11-26 23:39 ` Casey Schaufler [this message]
2018-11-26 23:39 ` [PATCH v5 17/38] Yama: Initialize as ordered LSM Casey Schaufler
2018-11-26 23:40 ` [PATCH v5 18/38] LSM: Introduce enum lsm_order Casey Schaufler
2018-11-26 23:41 ` [PATCH v5 19/38] capability: Initialize as LSM_ORDER_FIRST Casey Schaufler
2018-11-26 23:41 ` [PATCH v5 20/38] procfs: add smack subdir to attrs Casey Schaufler
2018-11-26 23:42 ` [PATCH v5 21/38] Smack: Abstract use of cred security blob Casey Schaufler
2018-11-26 23:43 ` [PATCH v5 22/38] SELinux: " Casey Schaufler
2018-11-26 23:44 ` [PATCH v5 23/38] SELinux: Remove cred security blob poisoning Casey Schaufler
2018-11-26 23:45 ` [PATCH v5 24/38] SELinux: Remove unused selinux_is_enabled Casey Schaufler
2018-11-26 23:45 ` [PATCH v5 25/38] AppArmor: Abstract use of cred security blob Casey Schaufler
2018-11-26 23:46 ` [PATCH v5 26/38] TOMOYO: " Casey Schaufler
2018-11-26 23:47 ` [PATCH v5 27/38] Infrastructure management of the " Casey Schaufler
2018-11-26 23:48 ` [PATCH v5 28/38] SELinux: Abstract use of file " Casey Schaufler
2018-11-26 23:49 ` [PATCH v5 29/38] Smack: " Casey Schaufler
2018-11-26 23:50 ` [PATCH v5 30/38] LSM: Infrastructure management of the file security Casey Schaufler
2018-11-26 23:51 ` [PATCH v5 31/38] SELinux: Abstract use of inode security blob Casey Schaufler
2018-11-26 23:52 ` [PATCH v5 32/38] Smack: " Casey Schaufler
2018-11-26 23:53 ` [PATCH v5 33/38] LSM: Infrastructure management of the inode security Casey Schaufler
2018-11-26 23:53 ` [PATCH v5 34/38] LSM: Infrastructure management of the task security Casey Schaufler
2018-11-26 23:54 ` [PATCH v5 35/38] SELinux: Abstract use of ipc security blobs Casey Schaufler
2018-11-26 23:55 ` [PATCH v5 36/38] Smack: " Casey Schaufler
2018-11-26 23:56 ` [PATCH v5 37/38] LSM: Infrastructure management of the ipc security blob Casey Schaufler
2018-11-26 23:57 ` [PATCH v5 38/38] TOMOYO: Update LSM flags to no longer be exclusive Casey Schaufler
2018-12-05  0:31 ` [PATCH v5 00/38] LSM: Module stacking for SARA and Landlock Kees Cook
2018-12-05  2:37   ` Casey Schaufler
2018-12-05  2:52     ` John Johansen
2018-12-11 18:57   ` James Morris
2018-12-11 21:02     ` Tetsuo Handa
2018-12-12 19:33       ` James Morris
2018-12-11 21:19     ` Kees Cook
2019-01-08  1:29       ` Kees Cook
2019-01-08 21:05         ` James Morris
2019-01-08 21:37           ` Casey Schaufler
2019-01-08 21:42             ` Kees Cook
2019-01-08 23:05               ` Casey Schaufler
2018-12-11 22:42 Casey Schaufler
2018-12-11 22:42 ` [PATCH v5 16/38] LoadPin: Initialize as ordered LSM Casey Schaufler

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