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/* $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/wait.h>
#include <linux/mm.h>
#include <linux/shm.h>
#include <linux/sem.h>
#include <linux/msg.h>
#include <linux/ipc.h>
#include <asm/uaccess.h>
#include <asm/string.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;
}
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