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1/*-
2 * Copyright (c) 1995 The NetBSD Foundation, Inc.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Christos Zoulas.
7 *
8 * Redistribution and use in source and binary forms, with or without

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66 * to preprocessor conditionals). A nice project for a kernel hacking
67 * novice might be to MakeItGo, but I have more important fish to fry
68 * at present.
69 *
70 * Derived from: $NetBSD: svr4_ipc.c,v 1.7 1998/10/19 22:43:00 tron Exp $
71 */
72
73#include <sys/cdefs.h>
74__FBSDID("$FreeBSD: head/sys/compat/svr4/svr4_ipc.c 159991 2006-06-27 18:28:50Z jhb $");
74__FBSDID("$FreeBSD: head/sys/compat/svr4/svr4_ipc.c 159993 2006-06-27 18:31:36Z jhb $");
75
76#include "opt_sysvipc.h"
77
78#include <sys/param.h>
79#include <sys/ipc.h>
80#include <sys/msg.h>
81#include <sys/proc.h>
82#include <sys/sem.h>

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645};
646
647int
648svr4_shmctl(td, v)
649 struct thread *td;
650 void *v;
651{
652 struct svr4_sys_shmctl_args *uap = v;
653 int error;
654 caddr_t sg = stackgap_init();
655 struct shmctl_args ap;
653 struct shmid_ds bs;
654 struct svr4_shmid_ds ss;
655 size_t bufsize;
656 int cmd, error;
657
659 ap.shmid = uap->shmid;
660
658 if (uap->buf != NULL) {
662 ap.buf = stackgap_alloc(&sg, sizeof (struct shmid_ds));
659 switch (uap->cmd) {
660 case SVR4_IPC_SET:
661 case SVR4_IPC_RMID:
662 case SVR4_SHM_LOCK:
663 case SVR4_SHM_UNLOCK:
668 error = copyin(uap->buf, (caddr_t) &ss,
669 sizeof ss);
664 error = copyin(uap->buf, &ss, sizeof(ss));
665 if (error)
671 return error;
666 return (error);
667 svr4_to_bsd_shmid_ds(&ss, &bs);
673 error = copyout(&bs, ap.buf, sizeof bs);
674 if (error)
675 return error;
668 break;
669 default:
678 break;
670 return (EINVAL);
671 }
672 }
681 else
682 ap.buf = NULL;
673
684
674 switch (uap->cmd) {
675 case SVR4_IPC_STAT:
687 ap.cmd = IPC_STAT;
688 if ((error = shmctl(td, &ap)) != 0)
689 return error;
690 if (uap->buf == NULL)
691 return 0;
692 error = copyin(&bs, ap.buf, sizeof bs);
693 if (error)
694 return error;
695 bsd_to_svr4_shmid_ds(&bs, &ss);
696 return copyout(&ss, uap->buf, sizeof ss);
697
676 cmd = IPC_STAT;
677 break;
678 case SVR4_IPC_SET:
699 ap.cmd = IPC_SET;
700 return shmctl(td, &ap);
701
679 cmd = IPC_SET;
680 break;
681 case SVR4_IPC_RMID:
682 cmd = IPC_RMID;
683 break;
684 case SVR4_SHM_LOCK:
685 cmd = SHM_LOCK;
686 break;
687 case SVR4_SHM_UNLOCK:
705 switch (uap->cmd) {
706 case SVR4_IPC_RMID:
707 ap.cmd = IPC_RMID;
708 break;
709 case SVR4_SHM_LOCK:
710 ap.cmd = SHM_LOCK;
711 break;
712 case SVR4_SHM_UNLOCK:
713 ap.cmd = SHM_UNLOCK;
714 break;
715 default:
716 return EINVAL;
717 }
718 return shmctl(td, &ap);
719
688 cmd = SHM_UNLOCK;
689 break;
690 default:
721 return EINVAL;
691 return (EINVAL);
692 }
693
694 error = kern_shmctl(td, uap->shmid, cmd, &bs, &bufsize);
695 if (error)
696 return (error);
697
698 switch (uap->cmd) {
699 case SVR4_IPC_STAT:
700 if (uap->buf != NULL) {
701 bsd_to_svr4_shmid_ds(&bs, &ss);
702 error = copyout(&ss, uap->buf, sizeof(ss));
703 }
704 break;
705 }
706
707 return (error);
708}
709
710int
711svr4_sys_shmsys(td, uap)
712 struct thread *td;
713 struct svr4_sys_shmsys_args *uap;
714{
715

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