diff options
Diffstat (limited to 'kernel/capability.c')
| -rw-r--r-- | kernel/capability.c | 21 |
1 files changed, 13 insertions, 8 deletions
diff --git a/kernel/capability.c b/kernel/capability.c index 0101e847603e..33e51e78c2d8 100644 --- a/kernel/capability.c +++ b/kernel/capability.c | |||
| @@ -486,17 +486,22 @@ asmlinkage long sys_capset(cap_user_header_t header, const cap_user_data_t data) | |||
| 486 | return ret; | 486 | return ret; |
| 487 | } | 487 | } |
| 488 | 488 | ||
| 489 | int __capable(struct task_struct *t, int cap) | 489 | /** |
| 490 | * capable - Determine if the current task has a superior capability in effect | ||
| 491 | * @cap: The capability to be tested for | ||
| 492 | * | ||
| 493 | * Return true if the current task has the given superior capability currently | ||
| 494 | * available for use, false if not. | ||
| 495 | * | ||
| 496 | * This sets PF_SUPERPRIV on the task if the capability is available on the | ||
| 497 | * assumption that it's about to be used. | ||
| 498 | */ | ||
| 499 | int capable(int cap) | ||
| 490 | { | 500 | { |
| 491 | if (security_capable(t, cap) == 0) { | 501 | if (has_capability(current, cap)) { |
| 492 | t->flags |= PF_SUPERPRIV; | 502 | current->flags |= PF_SUPERPRIV; |
| 493 | return 1; | 503 | return 1; |
| 494 | } | 504 | } |
| 495 | return 0; | 505 | return 0; |
| 496 | } | 506 | } |
| 497 | |||
| 498 | int capable(int cap) | ||
| 499 | { | ||
| 500 | return __capable(current, cap); | ||
| 501 | } | ||
| 502 | EXPORT_SYMBOL(capable); | 507 | EXPORT_SYMBOL(capable); |
