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      1 /*	$NetBSD: linux_mmap.h,v 1.22 2021/09/23 06:56:27 ryo Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Frank van der Linden and Eric Haszlakiewicz.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #ifndef _LINUX_MMAP_H
     33 #define _LINUX_MMAP_H
     34 
     35 #define LINUX_PROT_NONE		0x00
     36 #define LINUX_PROT_READ		0x01
     37 #define LINUX_PROT_WRITE	0x02
     38 #define LINUX_PROT_EXEC		0x04
     39 #define LINUX_PROT_GROWSDOWN	0x01000000
     40 #define LINUX_PROT_GROWSUP	0x02000000
     41 
     42 #define LINUX_MAP_SHARED	0x0001
     43 #define LINUX_MAP_PRIVATE	0x0002
     44 
     45 #if defined(__i386__)
     46 #include <compat/linux/arch/i386/linux_mmap.h>
     47 #elif defined(__m68k__)
     48 #include <compat/linux/arch/m68k/linux_mmap.h>
     49 #elif defined(__alpha__)
     50 #include <compat/linux/arch/alpha/linux_mmap.h>
     51 #elif defined(__powerpc__)
     52 #include <compat/linux/arch/powerpc/linux_mmap.h>
     53 #elif defined(__mips__)
     54 #include <compat/linux/arch/mips/linux_mmap.h>
     55 #elif defined(__aarch64__)
     56 #include <compat/linux/arch/aarch64/linux_mmap.h>
     57 #elif defined(__arm__)
     58 #include <compat/linux/arch/arm/linux_mmap.h>
     59 #elif defined(__amd64__)
     60 #include <compat/linux/arch/amd64/linux_mmap.h>
     61 /*
     62  * XXX ERH: All below here are guesses.  The header
     63  * XXX ERH: files are correct but the defined(*)
     64  * XXX ERH: probably aren't
     65  *
     66  * XXX ERH: Can probably drop some of these headers: linux
     67  * XXX ERH: is stupid about compat stuff.  It doesn't really
     68  * XXX ERH: use all the defines, but I don't want to go looking
     69  * XXX ERH: through all the kernel sources right now.
     70  */
     71 #elif defined(__sparc__)
     72 #include <compat/linux/arch/sparc/linux_mmap.h>
     73 #else
     74 #error Undefined linux_mmap.h machine type.
     75 #endif
     76 
     77 /*
     78  * Ensure the linux_sys_mmap syscall appears to exist:
     79  */
     80 struct linux_sys_mmap_args;
     81 struct linux_sys_mmap_args {
     82 	syscallarg(unsigned long) addr;
     83 	syscallarg(size_t) len;
     84 	syscallarg(int) prot;
     85 	syscallarg(int) flags;
     86 	syscallarg(int) fd;
     87 	syscallarg(linux_off_t) offset;
     88 };
     89 
     90 /*
     91  * Same arguments, but different meaning for "offset".
     92  * See linux_misc.c:linux_sys_mmap2().
     93  */
     94 #define linux_sys_mmap2_args linux_sys_mmap_args
     95 
     96 #ifdef _KERNEL
     97 __BEGIN_DECLS
     98 int linux_sys_mmap(struct lwp *p, const struct linux_sys_mmap_args *v, register_t *retval);
     99 int linux_sys_mmap2(struct lwp *p, const struct linux_sys_mmap2_args *v, register_t *retval);
    100 
    101 __END_DECLS
    102 #endif /* !_KERNEL */
    103 
    104 #endif /* !_LINUX_MMAP_H */
    105