/* $Id: ipc.c,v 1.5 1999/12/09 00:41:00 davem Exp $ * ipc.c: Solaris IPC emulation * * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) */#include <linux/kernel.h>#include <linux/types.h>#include <linux/smp_lock.h>#include <linux/wait.h>#include <linux/mm.h>#include <linux/shm.h>#include <linux/sem.h>#include <linux/msg.h>#include <asm/uaccess.h>#include <asm/string.h>#include <asm/ipc.h>#include "conv.h"struct solaris_ipc_perm {	s32	uid;	s32	gid;	s32	cuid;	s32	cgid;	u32	mode;	u32	seq;	int	key;	s32	pad[4];};struct solaris_shmid_ds {	struct solaris_ipc_perm	shm_perm;	int			shm_segsz;	u32			shm_amp;	unsigned short		shm_lkcnt;	char			__padxx[2];	s32			shm_lpid;	s32			shm_cpid;	u32			shm_nattch;	u32			shm_cnattch;	s32			shm_atime;	s32			shm_pad1;	s32			shm_dtime;	s32			shm_pad2;	s32			shm_ctime;	s32			shm_pad3;	unsigned short		shm_cv;	char			shm_pad4[2];	u32			shm_sptas;	s32			shm_pad5[2];};asmlinkage long solaris_shmsys(int cmd, u32 arg1, u32 arg2, u32 arg3){	int (*sys_ipc)(unsigned,int,int,unsigned long,void __user *,long) = 		(int (*)(unsigned,int,int,unsigned long,void __user *,long))SYS(ipc);	mm_segment_t old_fs;	unsigned long raddr;	int ret;			switch (cmd) {	case 0: /* shmat */		old_fs = get_fs();		set_fs(KERNEL_DS);		ret = sys_ipc(SHMAT, arg1, arg3 & ~0x4000, (unsigned long)&raddr, A(arg2), 0);		set_fs(old_fs);		if (ret >= 0) return (u32)raddr;		else return ret;	case 1: /* shmctl */		switch (arg2) {		case 3: /* SHM_LOCK */		case 4: /* SHM_UNLOCK */			return sys_ipc(SHMCTL, arg1, (arg2 == 3) ? SHM_LOCK : SHM_UNLOCK, 0, NULL, 0);		case 10: /* IPC_RMID */			return sys_ipc(SHMCTL, arg1, IPC_RMID, 0, NULL, 0);		case 11: /* IPC_SET */			{				struct shmid_ds s;				struct solaris_shmid_ds __user *p = A(arg3);								if (get_user (s.shm_perm.uid, &p->shm_perm.uid) ||				    __get_user (s.shm_perm.gid, &p->shm_perm.gid) || 				    __get_user (s.shm_perm.mode, &p->shm_perm.mode))					return -EFAULT;				old_fs = get_fs();				set_fs(KERNEL_DS);				ret = sys_ipc(SHMCTL, arg1, IPC_SET, 0, &s, 0);				set_fs(old_fs);				return ret;			}		case 12: /* IPC_STAT */			{				struct shmid_ds s;				struct solaris_shmid_ds __user *p = A(arg3);								old_fs = get_fs();				set_fs(KERNEL_DS);				ret = sys_ipc(SHMCTL, arg1, IPC_SET, 0, &s, 0);				set_fs(old_fs);				if (put_user (s.shm_perm.uid, &(p->shm_perm.uid)) ||				    __put_user (s.shm_perm.gid, &(p->shm_perm.gid)) || 				    __put_user (s.shm_perm.cuid, &(p->shm_perm.cuid)) ||				    __put_user (s.shm_perm.cgid, &(p->shm_perm.cgid)) || 				    __put_user (s.shm_perm.mode, &(p->shm_perm.mode)) ||				    __put_user (s.shm_perm.seq, &(p->shm_perm.seq)) ||				    __put_user (s.shm_perm.key, &(p->shm_perm.key)) ||				    __put_user (s.shm_segsz, &(p->shm_segsz)) ||				    __put_user (s.shm_lpid, &(p->shm_lpid)) ||				    __put_user (s.shm_cpid, &(p->shm_cpid)) ||				    __put_user (s.shm_nattch, &(p->shm_nattch)) ||				    __put_user (s.shm_atime, &(p->shm_atime)) ||				    __put_user (s.shm_dtime, &(p->shm_dtime)) ||				    __put_user (s.shm_ctime, &(p->shm_ctime)))					return -EFAULT;				return ret;			}		default: return -EINVAL;		}	case 2: /* shmdt */		return sys_ipc(SHMDT, 0, 0, 0, A(arg1), 0);	case 3: /* shmget */		return sys_ipc(SHMGET, arg1, arg2, arg3, NULL, 0);	}	return -EINVAL;}