mirror of
https://github.com/rd-stuffs/msm-4.14.git
synced 2025-02-20 11:45:48 +08:00
108 lines
2.8 KiB
C
108 lines
2.8 KiB
C
/*
|
|
* 32 bit compatibility code for System V IPC
|
|
*
|
|
* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
|
|
* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
|
|
* Copyright (C) 1999 Arun Sharma <arun.sharma@intel.com>
|
|
* Copyright (C) 2000 VA Linux Co
|
|
* Copyright (C) 2000 Don Dugger <n0ano@valinux.com>
|
|
* Copyright (C) 2000 Hewlett-Packard Co.
|
|
* Copyright (C) 2000 David Mosberger-Tang <davidm@hpl.hp.com>
|
|
* Copyright (C) 2000 Gerhard Tonn (ton@de.ibm.com)
|
|
* Copyright (C) 2000-2002 Andi Kleen, SuSE Labs (x86-64 port)
|
|
* Copyright (C) 2000 Silicon Graphics, Inc.
|
|
* Copyright (C) 2001 IBM
|
|
* Copyright (C) 2004 IBM Deutschland Entwicklung GmbH, IBM Corporation
|
|
* Copyright (C) 2004 Arnd Bergmann (arnd@arndb.de)
|
|
*
|
|
* This code is collected from the versions for sparc64, mips64, s390x, ia64,
|
|
* ppc64 and x86_64, all of which are based on the original sparc64 version
|
|
* by Jakub Jelinek.
|
|
*
|
|
*/
|
|
#include <linux/compat.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/highuid.h>
|
|
#include <linux/init.h>
|
|
#include <linux/msg.h>
|
|
#include <linux/shm.h>
|
|
#include <linux/syscalls.h>
|
|
#include <linux/ptrace.h>
|
|
|
|
#include <linux/mutex.h>
|
|
#include <linux/uaccess.h>
|
|
|
|
#include "util.h"
|
|
|
|
int get_compat_ipc64_perm(struct ipc64_perm *to,
|
|
struct compat_ipc64_perm __user *from)
|
|
{
|
|
struct compat_ipc64_perm v;
|
|
if (copy_from_user(&v, from, sizeof(v)))
|
|
return -EFAULT;
|
|
to->uid = v.uid;
|
|
to->gid = v.gid;
|
|
to->mode = v.mode;
|
|
return 0;
|
|
}
|
|
|
|
int get_compat_ipc_perm(struct ipc64_perm *to,
|
|
struct compat_ipc_perm __user *from)
|
|
{
|
|
struct compat_ipc_perm v;
|
|
if (copy_from_user(&v, from, sizeof(v)))
|
|
return -EFAULT;
|
|
to->uid = v.uid;
|
|
to->gid = v.gid;
|
|
to->mode = v.mode;
|
|
return 0;
|
|
}
|
|
|
|
void to_compat_ipc64_perm(struct compat_ipc64_perm *to, struct ipc64_perm *from)
|
|
{
|
|
to->key = from->key;
|
|
to->uid = from->uid;
|
|
to->gid = from->gid;
|
|
to->cuid = from->cuid;
|
|
to->cgid = from->cgid;
|
|
to->mode = from->mode;
|
|
to->seq = from->seq;
|
|
}
|
|
|
|
void to_compat_ipc_perm(struct compat_ipc_perm *to, struct ipc64_perm *from)
|
|
{
|
|
to->key = from->key;
|
|
SET_UID(to->uid, from->uid);
|
|
SET_GID(to->gid, from->gid);
|
|
SET_UID(to->cuid, from->cuid);
|
|
SET_GID(to->cgid, from->cgid);
|
|
to->mode = from->mode;
|
|
to->seq = from->seq;
|
|
}
|
|
|
|
#ifndef COMPAT_SHMLBA
|
|
#define COMPAT_SHMLBA SHMLBA
|
|
#endif
|
|
|
|
COMPAT_SYSCALL_DEFINE3(shmat, int, shmid, compat_uptr_t, shmaddr, int, shmflg)
|
|
{
|
|
unsigned long ret;
|
|
long err;
|
|
|
|
err = do_shmat(shmid, compat_ptr(shmaddr), shmflg, &ret, COMPAT_SHMLBA);
|
|
if (err)
|
|
return err;
|
|
force_successful_syscall_return();
|
|
return (long)ret;
|
|
}
|
|
|
|
COMPAT_SYSCALL_DEFINE4(semtimedop, int, semid, struct sembuf __user *, tsems,
|
|
unsigned, nsops,
|
|
const struct compat_timespec __user *, timeout)
|
|
{
|
|
struct timespec __user *ts64;
|
|
if (compat_convert_timespec(&ts64, timeout))
|
|
return -EFAULT;
|
|
return sys_semtimedop(semid, tsems, nsops, ts64);
|
|
}
|