| 716 | }; |
| 717 | #endif |
| 718 | int |
| 719 | sys_ksem_post(struct thread *td, struct ksem_post_args *uap) |
| 720 | { |
| 721 | cap_rights_t rights; |
| 722 | struct file *fp; |
| 723 | struct ksem *ks; |
| 724 | int error; |
| 725 | |
| 726 | AUDIT_ARG_FD(uap->id); |
| 727 | error = ksem_get(td, uap->id, |
| 728 | cap_rights_init_one(&rights, CAP_SEM_POST), &fp); |
| 729 | if (error) |
| 730 | return (error); |
| 731 | ks = fp->f_data; |
| 732 | |
| 733 | mtx_lock(&sem_lock); |
| 734 | #ifdef MAC |
| 735 | error = mac_posixsem_check_post(td->td_ucred, fp->f_cred, ks); |
| 736 | if (error) |
| 737 | goto err; |
| 738 | #endif |
| 739 | if (ks->ks_value == SEM_VALUE_MAX) { |
| 740 | error = EOVERFLOW; |
| 741 | goto err; |
| 742 | } |
| 743 | ++ks->ks_value; |
| 744 | if (ks->ks_waiters > 0) |
| 745 | cv_signal(&ks->ks_cv); |
| 746 | error = 0; |
| 747 | vfs_timestamp(&ks->ks_ctime); |
| 748 | err: |
| 749 | mtx_unlock(&sem_lock); |
| 750 | fdrop(fp, td); |
| 751 | return (error); |
| 752 | } |
| 753 | |
| 754 | #ifndef _SYS_SYSPROTO_H_ |
| 755 | struct ksem_wait_args { |
nothing calls this directly
no test coverage detected