/*      $NetBSD: linux_oldmmap.c,v 1.74 2021/11/25 03:08:04 ryo Exp $   */

/*-
* Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Frank van der Linden and Eric Haszlakiewicz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
*    notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: linux_oldmmap.c,v 1.74 2021/11/25 03:08:04 ryo Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mount.h>

#include <sys/sched.h>
#include <sys/syscallargs.h>

#include <uvm/uvm_param.h>

#ifdef __amd64__
#include <compat/netbsd32/netbsd32.h>

#include <compat/linux32/common/linux32_types.h>
#include <compat/linux32/common/linux32_machdep.h>
#endif

#include <compat/linux/common/linux_types.h>
#include <compat/linux/common/linux_mmap.h>
#include <compat/linux/common/linux_oldmmap.h>
#include <compat/linux/common/linux_signal.h>
#include <compat/linux/common/linux_ipc.h>
#include <compat/linux/common/linux_sem.h>

#include <compat/linux/linux_syscallargs.h>

/* Used on: arm, i386, m68k */
/* Used for linux32 on: aarch64, amd64 */
/* Not used on: alpha, mips, pcc, sparc, sparc64 */

#undef DPRINTF
#ifdef DEBUG_LINUX
#define DPRINTF(a)      uprintf a
#else
#define DPRINTF(a)
#endif

/*
* Linux wants to pass everything to a syscall in registers.
* However mmap() has 6 of them. Oops: out of register error.
* They just pass everything in a structure.
*/
int
linux_sys_old_mmap(struct lwp *l, const struct linux_sys_old_mmap_args *uap, register_t *retval)
{
       /* {
               syscallarg(struct linux_oldmmap *) lmp;
       } */
       struct linux_oldmmap lmap;
       struct linux_sys_mmap_args nlmap;
       int error;

       if ((error = copyin(SCARG(uap, lmp), &lmap, sizeof lmap)))
               return error;

       if (lmap.lm_offset & PAGE_MASK) {
               DPRINTF(("old_mmap: 0x%x\n", lmap.lm_offset));
               return EINVAL;
       }

       SCARG(&nlmap,addr) = lmap.lm_addr;
       SCARG(&nlmap,len) = lmap.lm_len;
       SCARG(&nlmap,prot) = lmap.lm_prot;
       SCARG(&nlmap,flags) = lmap.lm_flags;
       SCARG(&nlmap,fd) = lmap.lm_fd;
       SCARG(&nlmap,offset) = lmap.lm_offset;
       error = linux_sys_mmap(l, &nlmap, retval);
       DPRINTF(("old_mmap(%#x, %u, %u, %u, %d, %u) = %d\n",
           lmap.lm_addr, lmap.lm_len, lmap.lm_prot, lmap.lm_flags,
           lmap.lm_fd, lmap.lm_offset, error));
       return error;
}