[PATCH v5 10/11] lsm: consolidate all of the LSM framework initcalls

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

The LSM framework itself registers a small number of initcalls, this
patch converts these initcalls into the new initcall mechanism.

Reviewed-by: Casey Schaufler <casey@schaufler-ca.com>
Reviewed-by: John Johansen <john.johhansen@canonical.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>
---
 security/inode.c    |  3 +--
 security/lsm.h      | 20 ++++++++++++++++++++
 security/lsm_init.c | 14 ++++++++++++--
 security/min_addr.c |  5 +++--
 4 files changed, 36 insertions(+), 6 deletions(-)

diff --git a/security/inode.c b/security/inode.c
index 6620c3e42af2..ab8d6a2acadb 100644
--- a/security/inode.c
+++ b/security/inode.c
@@ -368,7 +368,7 @@ static const struct file_operations lsm_ops = {
 };
 #endif
 
-static int __init securityfs_init(void)
+int __init securityfs_init(void)
 {
 	int retval;
 
@@ -387,4 +387,3 @@ static int __init securityfs_init(void)
 #endif
 	return 0;
 }
-core_initcall(securityfs_init);
diff --git a/security/lsm.h b/security/lsm.h
index 8dc267977ae0..81aadbc61685 100644
--- a/security/lsm.h
+++ b/security/lsm.h
@@ -35,4 +35,24 @@ extern struct kmem_cache *lsm_inode_cache;
 int lsm_cred_alloc(struct cred *cred, gfp_t gfp);
 int lsm_task_alloc(struct task_struct *task);
 
+/* LSM framework initializers */
+
+#ifdef CONFIG_MMU
+int min_addr_init(void);
+#else
+static inline int min_addr_init(void)
+{
+	return 0;
+}
+#endif /* CONFIG_MMU */
+
+#ifdef CONFIG_SECURITYFS
+int securityfs_init(void);
+#else
+static inline int securityfs_init(void)
+{
+	return 0;
+}
+#endif /* CONFIG_SECURITYFS */
+
 #endif /* _LSM_H_ */
diff --git a/security/lsm_init.c b/security/lsm_init.c
index aacdac406ba5..0f668bca98f9 100644
--- a/security/lsm_init.c
+++ b/security/lsm_init.c
@@ -488,7 +488,12 @@ int __init security_init(void)
  */
 static int __init security_initcall_pure(void)
 {
-	return lsm_initcall(pure);
+	int rc_adr, rc_lsm;
+
+	rc_adr = min_addr_init();
+	rc_lsm = lsm_initcall(pure);
+
+	return (rc_adr ? rc_adr : rc_lsm);
 }
 pure_initcall(security_initcall_pure);
 
@@ -506,7 +511,12 @@ early_initcall(security_initcall_early);
  */
 static int __init security_initcall_core(void)
 {
-	return lsm_initcall(core);
+	int rc_sfs, rc_lsm;
+
+	rc_sfs = securityfs_init();
+	rc_lsm = lsm_initcall(core);
+
+	return (rc_sfs ? rc_sfs : rc_lsm);
 }
 core_initcall(security_initcall_core);
 
diff --git a/security/min_addr.c b/security/min_addr.c
index c55bb84b8632..0fde5ec9abc8 100644
--- a/security/min_addr.c
+++ b/security/min_addr.c
@@ -5,6 +5,8 @@
 #include <linux/sysctl.h>
 #include <linux/minmax.h>
 
+#include "lsm.h"
+
 /* amount of vm to protect from userspace access by both DAC and the LSM*/
 unsigned long mmap_min_addr;
 /* amount of vm to protect from userspace using CAP_SYS_RAWIO (DAC) */
@@ -52,11 +54,10 @@ static const struct ctl_table min_addr_sysctl_table[] = {
 	},
 };
 
-static int __init init_mmap_min_addr(void)
+int __init min_addr_init(void)
 {
 	register_sysctl_init("vm", min_addr_sysctl_table);
 	update_mmap_min_addr();
 
 	return 0;
 }
-pure_initcall(init_mmap_min_addr);
-- 
2.51.1.dirty