diff options
Diffstat (limited to 'security/apparmor/include/context.h')
-rw-r--r-- | security/apparmor/include/context.h | 61 |
1 files changed, 43 insertions, 18 deletions
diff --git a/security/apparmor/include/context.h b/security/apparmor/include/context.h index a9cbee4..d44ba58 100644 --- a/security/apparmor/include/context.h +++ b/security/apparmor/include/context.h @@ -21,6 +21,9 @@ #include "policy.h" +#define cred_cxt(X) (X)->security +#define current_cxt() cred_cxt(current_cred()) + /* struct aa_file_cxt - the AppArmor context the file was opened in * @perms: the permission the file was opened with * @@ -80,23 +83,8 @@ int aa_replace_current_profile(struct aa_profile *profile); int aa_set_current_onexec(struct aa_profile *profile); int aa_set_current_hat(struct aa_profile *profile, u64 token); int aa_restore_previous_profile(u64 cookie); +struct aa_profile *aa_get_task_profile(struct task_struct *task); -/** - * __aa_task_is_confined - determine if @task has any confinement - * @task: task to check confinement of (NOT NULL) - * - * If @task != current needs to be called in RCU safe critical section - */ -static inline bool __aa_task_is_confined(struct task_struct *task) -{ - struct aa_task_cxt *cxt = __task_cred(task)->security; - - BUG_ON(!cxt || !cxt->profile); - if (unconfined(aa_newest_version(cxt->profile))) - return 0; - - return 1; -} /** * aa_cred_profile - obtain cred's profiles @@ -108,12 +96,36 @@ static inline bool __aa_task_is_confined(struct task_struct *task) */ static inline struct aa_profile *aa_cred_profile(const struct cred *cred) { - struct aa_task_cxt *cxt = cred->security; + struct aa_task_cxt *cxt = cred_cxt(cred); BUG_ON(!cxt || !cxt->profile); return aa_newest_version(cxt->profile); } /** + * __aa_task_profile - retrieve another task's profile + * @task: task to query (NOT NULL) + * + * Returns: @task's profile without incrementing its ref count + * + * If @task != current needs to be called in RCU safe critical section + */ +static inline struct aa_profile *__aa_task_profile(struct task_struct *task) +{ + return aa_cred_profile(__task_cred(task)); +} + +/** + * __aa_task_is_confined - determine if @task has any confinement + * @task: task to check confinement of (NOT NULL) + * + * If @task != current needs to be called in RCU safe critical section + */ +static inline bool __aa_task_is_confined(struct task_struct *task) +{ + return !unconfined(__aa_task_profile(task)); +} + +/** * __aa_current_profile - find the current tasks confining profile * * Returns: up to date confining profile or the ns unconfined profile (NOT NULL) @@ -136,7 +148,7 @@ static inline struct aa_profile *__aa_current_profile(void) */ static inline struct aa_profile *aa_current_profile(void) { - const struct aa_task_cxt *cxt = current_cred()->security; + const struct aa_task_cxt *cxt = current_cxt(); struct aa_profile *profile; BUG_ON(!cxt || !cxt->profile); @@ -151,4 +163,17 @@ static inline struct aa_profile *aa_current_profile(void) return profile; } +/** + * aa_clear_task_cxt_trans - clear transition tracking info from the cxt + * @cxt: task context to clear (NOT NULL) + */ +static inline void aa_clear_task_cxt_trans(struct aa_task_cxt *cxt) +{ + aa_put_profile(cxt->previous); + aa_put_profile(cxt->onexec); + cxt->previous = NULL; + cxt->onexec = NULL; + cxt->token = 0; +} + #endif /* __AA_CONTEXT_H */ |