bsd/kern/sysv_sem.c

120 		int semid, int semnum, int adjval);
121 static void semundo_clear(int semid, int semnum);
549 semundo_adjust(struct proc *p, int *supidx, int semid,
590 		if (sueptr->une_id != semid || sueptr->une_num != semnum)
628 	new_sueptr->une_id = semid;
637 semundo_clear(int semid, int semnum)
651 			if (sueptr->une_id == semid) {
679 	int semid = uap->semid;
690 	AUDIT_ARG(svipc_id, semid);
695 	printf("call to semctl(%d, %d, %d, 0x%qx)\n", semid, semnum, cmd, user_arg);
698 	semid = IPCID_TO_IX(semid);
700 	if (semid < 0 || semid >= seminfo.semmni) {
702 		printf("Invalid semid\n");
708 	semakptr = &sema[semid];
710 	    semakptr->u.sem_perm._seq != IPCID_TO_SEQ(uap->semid)) {
742 		semundo_clear(semid, -1);
864 		semundo_clear(semid, semnum);
882 		semundo_clear(semid, -1);
901 	int semid, eval;
919 		for (semid = 0; semid < seminfo.semmni; semid++) {
920 			if ((sema[semid].u.sem_perm.mode & SEM_ALLOC) &&
921 			    sema[semid].u.sem_perm._key == key)
924 		if (semid < seminfo.semmni) {
928 			if ((eval = ipcperm(cred, &sema[semid].u.sem_perm,
931 			if (nsems < 0 || sema[semid].u.sem_nsems < nsems) {
946 			eval = mac_sysvsem_check_semget(cred, &sema[semid]);
979 		for (semid = 0; semid < seminfo.semmni; semid++) {
980 			if ((sema[semid].u.sem_perm.mode & SEM_ALLOC) == 0)
983 		if (semid == seminfo.semmni) {
997 		printf("semid %d is available\n", semid);
999 		sema[semid].u.sem_perm._key = key;
1000 		sema[semid].u.sem_perm.cuid = kauth_cred_getuid(cred);
1001 		sema[semid].u.sem_perm.uid = kauth_cred_getuid(cred);
1002 		sema[semid].u.sem_perm.cgid = kauth_cred_getgid(cred);
1003 		sema[semid].u.sem_perm.gid = kauth_cred_getgid(cred);
1004 		sema[semid].u.sem_perm.mode = (semflg & 0777) | SEM_ALLOC;
1005 		sema[semid].u.sem_perm._seq =
1006 		    (sema[semid].u.sem_perm._seq + 1) & 0x7fff;
1007 		sema[semid].u.sem_nsems = nsems;
1008 		sema[semid].u.sem_otime = 0;
1009 		sema[semid].u.sem_ctime = sysv_semtime();
1010 		sema[semid].u.sem_base = &sem_pool[semtot];
1012 		bzero(sema[semid].u.sem_base,
1013 		    sizeof(sema[semid].u.sem_base[0])*nsems);
1015 		mac_sysvsem_label_associate(cred, &sema[semid]);
1018 		printf("sembase = 0x%x, next = 0x%x\n", sema[semid].u.sem_base,
1030 	*retval = IXSEQ_TO_IPCID(semid, sema[semid].u.sem_perm);
1045 	int semid = uap->semid;
1055 	AUDIT_ARG(svipc_id, uap->semid);
1060 	printf("call to semop(%d, 0x%x, %d)\n", semid, sops, nsops);
1063 	semid = IPCID_TO_IX(semid);	/* Convert back to zero origin */
1065 	if (semid < 0 || semid >= seminfo.semmni) {
1070 	semakptr = &sema[semid];
1075 	if (semakptr->u.sem_perm._seq != IPCID_TO_SEQ(uap->semid)) {
1247 	 	semakptr = &sema[semid];   /* sema may have been reallocated */
1249 		    semakptr->u.sem_perm._seq != IPCID_TO_SEQ(uap->semid) ||
1303 			eval = semundo_adjust(p, &supidx, semid,
1323 				if (semundo_adjust(p, &supidx, semid,
1421 			int semid;
1427 			semid = sueptr->une_id;
1431 			semakptr = &sema[semid];
1433 				panic("semexit - semid not allocated");
1440 			       semid,