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-rw-r--r--include/linux/capability.h49
1 files changed, 17 insertions, 32 deletions
diff --git a/include/linux/capability.h b/include/linux/capability.h
index fb16a3699b99..d4675af963fa 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -368,6 +368,15 @@ struct cpu_vfs_cap_data {
368 368
369#ifdef __KERNEL__ 369#ifdef __KERNEL__
370 370
371struct dentry;
372struct user_namespace;
373
374struct user_namespace *current_user_ns(void);
375
376extern const kernel_cap_t __cap_empty_set;
377extern const kernel_cap_t __cap_full_set;
378extern const kernel_cap_t __cap_init_eff_set;
379
371/* 380/*
372 * Internal kernel functions only 381 * Internal kernel functions only
373 */ 382 */
@@ -530,40 +539,16 @@ static inline kernel_cap_t cap_raise_nfsd_set(const kernel_cap_t a,
530 cap_intersect(permitted, __cap_nfsd_set)); 539 cap_intersect(permitted, __cap_nfsd_set));
531} 540}
532 541
533extern const kernel_cap_t __cap_empty_set; 542extern bool has_capability(struct task_struct *t, int cap);
534extern const kernel_cap_t __cap_full_set; 543extern bool has_ns_capability(struct task_struct *t,
535extern const kernel_cap_t __cap_init_eff_set; 544 struct user_namespace *ns, int cap);
536 545extern bool has_capability_noaudit(struct task_struct *t, int cap);
537/** 546extern bool capable(int cap);
538 * has_capability - Determine if a task has a superior capability available 547extern bool ns_capable(struct user_namespace *ns, int cap);
539 * @t: The task in question 548extern bool task_ns_capable(struct task_struct *t, int cap);
540 * @cap: The capability to be tested for 549extern bool nsown_capable(int cap);
541 *
542 * Return true if the specified task has the given superior capability
543 * currently in effect, false if not.
544 *
545 * Note that this does not set PF_SUPERPRIV on the task.
546 */
547#define has_capability(t, cap) (security_real_capable((t), (cap)) == 0)
548
549/**
550 * has_capability_noaudit - Determine if a task has a superior capability available (unaudited)
551 * @t: The task in question
552 * @cap: The capability to be tested for
553 *
554 * Return true if the specified task has the given superior capability
555 * currently in effect, false if not, but don't write an audit message for the
556 * check.
557 *
558 * Note that this does not set PF_SUPERPRIV on the task.
559 */
560#define has_capability_noaudit(t, cap) \
561 (security_real_capable_noaudit((t), (cap)) == 0)
562
563extern int capable(int cap);
564 550
565/* audit system wants to get cap info from files as well */ 551/* audit system wants to get cap info from files as well */
566struct dentry;
567extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps); 552extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps);
568 553
569#endif /* __KERNEL__ */ 554#endif /* __KERNEL__ */