From bbd3662a834813730912a58efb44dd6df6d952e6 Mon Sep 17 00:00:00 2001 From: Casey Schaufler Date: Mon, 12 Nov 2018 09:30:56 -0800 Subject: Infrastructure management of the cred security blob Move management of the cred security blob out of the security modules and into the security infrastructre. Instead of allocating and freeing space the security modules tell the infrastructure how much space they require. Signed-off-by: Casey Schaufler Reviewed-by: Kees Cook [kees: adjusted for ordered init series] Signed-off-by: Kees Cook --- include/linux/lsm_hooks.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'include/linux/lsm_hooks.h') diff --git a/include/linux/lsm_hooks.h b/include/linux/lsm_hooks.h index 0c908c091a03..dd33666567bc 100644 --- a/include/linux/lsm_hooks.h +++ b/include/linux/lsm_hooks.h @@ -2027,6 +2027,13 @@ struct security_hook_list { char *lsm; } __randomize_layout; +/* + * Security blob size or offset data. + */ +struct lsm_blob_sizes { + int lbs_cred; +}; + /* * Initializing a security_hook_list structure takes * up a lot of space in a source file. This macro takes @@ -2056,6 +2063,7 @@ struct lsm_info { unsigned long flags; /* Optional: flags describing LSM */ int *enabled; /* Optional: controlled by CONFIG_LSM */ int (*init)(void); /* Required. */ + struct lsm_blob_sizes *blobs; /* Optional: for blob sharing. */ }; extern struct lsm_info __start_lsm_info[], __end_lsm_info[]; @@ -2095,4 +2103,8 @@ static inline void security_delete_hooks(struct security_hook_list *hooks, #define __lsm_ro_after_init __ro_after_init #endif /* CONFIG_SECURITY_WRITABLE_HOOKS */ +#ifdef CONFIG_SECURITY +void __init lsm_early_cred(struct cred *cred); +#endif + #endif /* ! __LINUX_LSM_HOOKS_H */ -- cgit v1.2.3-59-g8ed1b