Re: A bug in semctl()

Sorry! I am working FB/6.0. But I have checked the 6.1 code, this prolbem exists too. in __semctl(): error = kern_semctl(td, uap->semid, uap->semnum, uap->cmd, &semun, &rval); but in kern_semctl() there is no convertion 在 06-7-26，李尚杰<[EMAIL PROT

A bug in semctl()

In file kern/sysv_sem.c: 554 __semctl(td, uap) 555 struct thread *td; 556 struct __semctl_args *uap; 557 { 558 int semid = uap->semid; <cmd; 561 u_short *array; 562 union semun *arg = uap->arg; 563 union semun real

A question about ipcperm() call?

The code for ipcperm() call : 78 ipcperm(td, perm, mode) 79 struct thread *td; 80 struct ipc_perm *perm; 81 int mode; 82 { 83 struct ucred *cred = td->td_ucred; 84 int error; 85 86 if (cred->cr_uid != perm->cuid && cred->cr_uid != perm->uid) { 87

An error about IPC permission checking

in the source code kern/sysv_shm.c: 729 error = ipcperm(td, &shmseg->u.shm_perm, mode); 730 #ifdef MAC 731 error = mac_check_sysv_shmget(td->td_ucred, shmseg, uap->shmflg); 732 if (error != 0) 733 MPRINTF(("mac_check_sysv_shmget returned %d\n", error)); 734