88 static int semvalid(int semid, struct prison *rpr,
110     int semid, int semseq, int semnum, int adjval);
111 static void semundo_clear(int semid, int semnum);
442 semundo_adjust(struct thread *td, struct sem_undo **supptr, int semid,  in semundo_adjust()  argument
478 		if (sunptr->un_id != semid || sunptr->un_num != semnum)  in semundo_adjust()
506 		sunptr->un_id = semid;  in semundo_adjust()
515 semundo_clear(int semid, int semnum)  in semundo_clear()  argument
525 			if (sunptr->un_id != semid)  in semundo_clear()
543 semvalid(int semid, struct prison *rpr, struct semid_kernel *semakptr)  in semvalid()  argument
547 	    semakptr->u.sem_perm.seq != IPCID_TO_SEQ(semid) ||  in semvalid()
625 	int	semid;  member
672 	error = kern_semctl(td, uap->semid, uap->semnum, uap->cmd, &semun,  in sys___semctl()
690 kern_semctl(struct thread *td, int semid, int semnum, int cmd,  in kern_semctl()  argument
704 	    semid, semnum, cmd, arg));  in kern_semctl()
707 	AUDIT_ARG_SVIPC_ID(semid);  in kern_semctl()
721 		if (semid < 0 || semid >= seminfo.semmni)  in kern_semctl()
723 		semakptr = &sema[semid];  in kern_semctl()
724 		sema_mtxp = &sema_mtx[semid];  in kern_semctl()
742 		*rval = IXSEQ_TO_IPCID(semid, semakptr->u.sem_perm);  in kern_semctl()
747 	semidx = IPCID_TO_IX(semid);  in kern_semctl()
768 		if ((error = semvalid(semid, rpr, semakptr)) != 0)  in kern_semctl()
777 		if ((error = semvalid(semid, rpr, semakptr)) != 0)  in kern_semctl()
790 		if ((error = semvalid(semid, rpr, semakptr)) != 0)  in kern_semctl()
807 		if ((error = semvalid(semid, rpr, semakptr)) != 0)  in kern_semctl()
819 		if ((error = semvalid(semid, rpr, semakptr)) != 0)  in kern_semctl()
831 		if ((error = semvalid(semid, rpr, semakptr)) != 0)  in kern_semctl()
867 		if ((error = semvalid(semid, rpr, semakptr)) != 0)  in kern_semctl()
880 		if ((error = semvalid(semid, rpr, semakptr)) != 0)  in kern_semctl()
892 		if ((error = semvalid(semid, rpr, semakptr)) != 0)  in kern_semctl()
923 		if ((error = semvalid(semid, rpr, semakptr)) != 0)  in kern_semctl()
966 	int semid, error = 0;  in sys_semget()  local
981 		for (semid = 0; semid < seminfo.semmni; semid++) {  in sys_semget()
982 			if ((sema[semid].u.sem_perm.mode & SEM_ALLOC) &&  in sys_semget()
983 			    sema[semid].cred != NULL &&  in sys_semget()
984 			    sema[semid].cred->cr_prison == cred->cr_prison &&  in sys_semget()
985 			    sema[semid].u.sem_perm.key == key)  in sys_semget()
988 		if (semid < seminfo.semmni) {  in sys_semget()
989 			AUDIT_ARG_SVIPC_ID(semid);  in sys_semget()
996 			if ((error = ipcperm(td, &sema[semid].u.sem_perm,  in sys_semget()
1000 			if (nsems > 0 && sema[semid].u.sem_nsems < nsems) {  in sys_semget()
1006 			error = mac_sysvsem_check_semget(cred, &sema[semid]);  in sys_semget()
1029 		for (semid = 0; semid < seminfo.semmni; semid++) {  in sys_semget()
1030 			if ((sema[semid].u.sem_perm.mode & SEM_ALLOC) == 0)  in sys_semget()
1033 		if (semid == seminfo.semmni) {  in sys_semget()
1049 		DPRINTF(("semid %d is available\n", semid));  in sys_semget()
1050 		mtx_lock(&sema_mtx[semid]);  in sys_semget()
1051 		KASSERT((sema[semid].u.sem_perm.mode & SEM_ALLOC) == 0,  in sys_semget()
1052 		    ("Lost semaphore %d", semid));  in sys_semget()
1053 		sema[semid].u.sem_perm.key = key;  in sys_semget()
1054 		sema[semid].u.sem_perm.cuid = cred->cr_uid;  in sys_semget()
1055 		sema[semid].u.sem_perm.uid = cred->cr_uid;  in sys_semget()
1056 		sema[semid].u.sem_perm.cgid = cred->cr_gid;  in sys_semget()
1057 		sema[semid].u.sem_perm.gid = cred->cr_gid;  in sys_semget()
1058 		sema[semid].u.sem_perm.mode = (semflg & 0777) | SEM_ALLOC;  in sys_semget()
1059 		sema[semid].cred = crhold(cred);  in sys_semget()
1060 		sema[semid].u.sem_perm.seq =  in sys_semget()
1061 		    (sema[semid].u.sem_perm.seq + 1) & 0x7fff;  in sys_semget()
1062 		sema[semid].u.sem_nsems = nsems;  in sys_semget()
1063 		sema[semid].u.sem_otime = 0;  in sys_semget()
1064 		sema[semid].u.sem_ctime = time_second;  in sys_semget()
1065 		sema[semid].u.__sem_base = &sem[semtot];  in sys_semget()
1067 		bzero(sema[semid].u.__sem_base,  in sys_semget()
1068 		    sizeof(sema[semid].u.__sem_base[0])*nsems);  in sys_semget()
1070 		mac_sysvsem_create(cred, &sema[semid]);  in sys_semget()
1072 		mtx_unlock(&sema_mtx[semid]);  in sys_semget()
1074 		    sema[semid].u.__sem_base, &sem[semtot]));  in sys_semget()
1082 	td->td_retval[0] = IXSEQ_TO_IPCID(semid, sema[semid].u.sem_perm);  in sys_semget()
1090 	int	semid;  member
1099 	return (kern_semop(td, uap->semid, uap->sops, uap->nsops, NULL));  in sys_semop()
1108 	int semid;  in kern_semop()  local
1133 	semid = IPCID_TO_IX(usemid);	/* Convert back to zero origin */  in kern_semop()
1135 	if (semid < 0 || semid >= seminfo.semmni)  in kern_semop()
1185 	semakptr = &sema[semid];  in kern_semop()
1186 	sema_mtxp = &sema_mtx[semid];  in kern_semop()
1374 			error = semundo_adjust(td, &suptr, semid, seq,  in kern_semop()
1395 				if (semundo_adjust(td, &suptr, semid, seq,  in kern_semop()
1447 	int semid, semnum, adjval, ix;  in semexit_myhook()  local
1476 			semid = suptr->un_ent[ix].un_id;  in semexit_myhook()
1480 			semakptr = &sema[semid];  in semexit_myhook()
1481 			sema_mtxp = &sema_mtx[semid];  in semexit_myhook()
1811 	int	semid;  member
1865 	error = kern_semctl(td, uap->semid, uap->semnum, uap->cmd, &semun,  in freebsd7___semctl()
1962 	error = kern_semctl(td, uap->semid, uap->semnum, uap->cmd, &semun,  in freebsd7_freebsd32___semctl()
2034 	error = kern_semctl(td, uap->semid, uap->semnum, uap->cmd, &semun,  in freebsd32___semctl()