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tomoyo: avoid get+put of task_struct

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Use task_cred_xxx(task, security) in tomoyo_real_domain() to
avoid a get+put of the target cred.

Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Acked-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: James Morris <jmorris@namei.org>
This commit is contained in:
Serge E. Hallyn 2009-06-01 22:47:19 -05:00 committed by James Morris
parent 13b297d943
commit fbeb4a9c20
1 changed files with 1 additions and 8 deletions
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9
security/tomoyo/tomoyo.h
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@ -90,17 +90,10 @@ static inline struct tomoyo_domain_info *tomoyo_domain(void)
return current_cred()->security; return current_cred()->security;
} }
/* Caller holds tasklist_lock spinlock. */
static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct static inline struct tomoyo_domain_info *tomoyo_real_domain(struct task_struct
*task) *task)
{ {
/***** CRITICAL SECTION START *****/ return task_cred_xxx(task, security);
const struct cred *cred = get_task_cred(task);
struct tomoyo_domain_info *domain = cred->security;
put_cred(cred);
return domain;
/***** CRITICAL SECTION END *****/
} }
#endif /* !defined(_SECURITY_TOMOYO_TOMOYO_H) */ #endif /* !defined(_SECURITY_TOMOYO_TOMOYO_H) */