From b0654ca42998440df42ba2ccc3b7dbe3bf5b7bb5 Mon Sep 17 00:00:00 2001 From: Casey Schaufler Date: Wed, 9 Oct 2024 10:32:18 -0700 Subject: lsm: create new security_cred_getlsmprop LSM hook Create a new LSM hook security_cred_getlsmprop() which, like security_cred_getsecid(), fetches LSM specific attributes from the cred structure. The associated data elements in the audit sub-system are changed from a secid to a lsm_prop to accommodate multiple possible LSM audit users. Cc: linux-integrity@vger.kernel.org Cc: audit@vger.kernel.org Cc: selinux@vger.kernel.org Signed-off-by: Casey Schaufler [PM: subj line tweak] Signed-off-by: Paul Moore --- include/linux/lsm_hook_defs.h | 2 ++ include/linux/security.h | 5 +++++ 2 files changed, 7 insertions(+) (limited to 'include/linux') diff --git a/include/linux/lsm_hook_defs.h b/include/linux/lsm_hook_defs.h index 23ad7e4f8c67..eb2937599cb0 100644 --- a/include/linux/lsm_hook_defs.h +++ b/include/linux/lsm_hook_defs.h @@ -218,6 +218,8 @@ LSM_HOOK(int, 0, cred_prepare, struct cred *new, const struct cred *old, LSM_HOOK(void, LSM_RET_VOID, cred_transfer, struct cred *new, const struct cred *old) LSM_HOOK(void, LSM_RET_VOID, cred_getsecid, const struct cred *c, u32 *secid) +LSM_HOOK(void, LSM_RET_VOID, cred_getlsmprop, const struct cred *c, + struct lsm_prop *prop) LSM_HOOK(int, 0, kernel_act_as, struct cred *new, u32 secid) LSM_HOOK(int, 0, kernel_create_files_as, struct cred *new, struct inode *inode) LSM_HOOK(int, 0, kernel_module_request, char *kmod_name) diff --git a/include/linux/security.h b/include/linux/security.h index 2b19ef5d799c..acd2e5d1b0ff 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -488,6 +488,7 @@ void security_cred_free(struct cred *cred); int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); void security_transfer_creds(struct cred *new, const struct cred *old); void security_cred_getsecid(const struct cred *c, u32 *secid); +void security_cred_getlsmprop(const struct cred *c, struct lsm_prop *prop); int security_kernel_act_as(struct cred *new, u32 secid); int security_kernel_create_files_as(struct cred *new, struct inode *inode); int security_kernel_module_request(char *kmod_name); @@ -1229,6 +1230,10 @@ static inline void security_cred_getsecid(const struct cred *c, u32 *secid) *secid = 0; } +static inline void security_cred_getlsmprop(const struct cred *c, + struct lsm_prop *prop) +{ } + static inline int security_kernel_act_as(struct cred *cred, u32 secid) { return 0; -- cgit v1.2.3