// Set updates parameters of the semaphore set.
func (ss *SemaphoreSet) Set(ssi *SemSetInfo) error {
sds := &C.struct_semid_ds{
sem_perm: C.struct_ipc_perm{
uid: C.__uid_t(ssi.Perms.OwnerUID),
gid: C.__gid_t(ssi.Perms.OwnerGID),
mode: C.ushort(ssi.Perms.Mode & 0x1FF),
},
}
rc, err := C.semctl_buf(C.int(ss.id), C.IPC_SET, sds)
if rc == -1 {
return err
}
return nil
}
// Stat produces information about the semaphore set.
func (ss *SemaphoreSet) Stat() (*SemSetInfo, error) {
sds := C.struct_semid_ds{}
rc, err := C.semctl_buf(C.int(ss.id), C.IPC_STAT, &sds)
if rc == -1 {
return nil, err
}
ssinf := SemSetInfo{
Perms: IpcPerms{
OwnerUID: int(sds.sem_perm.uid),
OwnerGID: int(sds.sem_perm.gid),
CreatorUID: int(sds.sem_perm.cuid),
CreatorGID: int(sds.sem_perm.cgid),
Mode: uint16(sds.sem_perm.mode),
},
LastOp: time.Unix(int64(sds.sem_otime), 0),
LastChange: time.Unix(int64(sds.sem_ctime), 0),
Count: uint(sds.sem_nsems),
}
return &ssinf, nil
}