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LSM: Infrastructure management of the inode security

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Move management of the inode->i_security blob out
of the individual security modules and into the security
infrastructure. Instead of allocating the blobs from within
the modules the modules tell the infrastructure how much
space is required, and the space is allocated there.

Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
[kees: adjusted for ordered init series]
Signed-off-by: Kees Cook <keescook@chromium.org>
This commit is contained in:
Casey Schaufler
2018-09-21 17:19:29 -07:00
committed by Kees Cook
parent fb4021b6fb
commit afb1cbe374
6 changed files with 93 additions and 98 deletions
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3
include/linux/lsm_hooks.h
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@@ -2033,6 +2033,7 @@ struct security_hook_list {
struct lsm_blob_sizes {
int lbs_cred;
int lbs_file;
int lbs_inode;
};
/*
@@ -2104,6 +2105,8 @@ static inline void security_delete_hooks(struct security_hook_list *hooks,
#define __lsm_ro_after_init __ro_after_init
#endif /* CONFIG_SECURITY_WRITABLE_HOOKS */
extern int lsm_inode_alloc(struct inode *inode);
#ifdef CONFIG_SECURITY
void __init lsm_early_cred(struct cred *cred);
#endif