From 30b1089d33d73e2f1ba32d9f419400d07ebf4b27 Mon Sep 17 00:00:00 2001 From: mr Date: Thu, 13 Sep 2001 21:06:41 +0000 Subject: PR: kern/29698 (part) Reviewed by: audit Implement SEM_STAT (like IPC_STAT but treats semid as sema-index). The linuxerator will need it. --- sys/kern/sysv_sem.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'sys/kern/sysv_sem.c') diff --git a/sys/kern/sysv_sem.c b/sys/kern/sysv_sem.c index a1deec7..81e00b8 100644 --- a/sys/kern/sysv_sem.c +++ b/sys/kern/sysv_sem.c @@ -499,6 +499,25 @@ __semctl(td, uap) goto done2; } + switch(cmd) { + case SEM_STAT: + if (semid < 0 || semid >= seminfo.semmsl) + return(EINVAL); + semaptr = &sema[semid]; + if ((semaptr->sem_perm.mode & SEM_ALLOC) == 0 ) + return(EINVAL); + if ((error = ipcperm(td, &semaptr->sem_perm, IPC_R))) + return(error); + if ((error = copyin(arg, &real_arg, sizeof(real_arg))) != 0) + return(error); + error = copyout((caddr_t)semaptr, real_arg.buf, + sizeof(struct semid_ds)); + rval = IXSEQ_TO_IPCID(semid,semaptr->sem_perm); + if (error == 0) + td->td_retval[0] = rval; + goto done2; + } + semid = IPCID_TO_IX(semid); if (semid < 0 || semid >= seminfo.semmsl) { error = EINVAL; -- cgit v1.1