52745eef3f
as the implementation is non trivial or is compat. mark old mount() properly instead of manually #if'ing ito to ENOSYS.
96 lines
3.2 KiB
C
96 lines
3.2 KiB
C
/* $NetBSD: netbsd32_vm.c,v 1.1 2018/12/24 21:27:06 mrg Exp $ */
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/*
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* Copyright (c) 1998, 2001, 2008, 2018 Matthew R. Green
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: NetBSD: netbsd32_netbsd.c,v 1.221 2018/12/24 20:44:39 mrg Exp
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: netbsd32_vm.c,v 1.1 2018/12/24 21:27:06 mrg Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/mman.h>
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#include <sys/filedesc.h>
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#include <sys/vfs_syscalls.h>
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#include <compat/sys/mman.h>
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#include <compat/netbsd32/netbsd32.h>
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#include <compat/netbsd32/netbsd32_syscall.h>
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#include <compat/netbsd32/netbsd32_syscallargs.h>
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#include <compat/netbsd32/netbsd32_conv.h>
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int
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netbsd32_mmap(struct lwp *l, const struct netbsd32_mmap_args *uap, register_t *retval)
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{
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/* {
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syscallarg(netbsd32_voidp) addr;
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syscallarg(netbsd32_size_t) len;
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syscallarg(int) prot;
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syscallarg(int) flags;
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syscallarg(int) fd;
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syscallarg(netbsd32_long) PAD;
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syscallarg(netbsd32_off_t) pos;
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} */
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struct sys_mmap_args ua;
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int error;
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NETBSD32TOP_UAP(addr, void);
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NETBSD32TOX_UAP(len, size_t);
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NETBSD32TO64_UAP(prot);
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NETBSD32TO64_UAP(flags);
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#ifdef __x86_64__
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/*
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* Ancient kernel on x86 did not obey PROT_EXEC on i386 at least
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* and ld.so did not turn it on!
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*/
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if (SCARG(&ua, flags) & COMPAT_MAP_COPY) {
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SCARG(&ua, flags) = MAP_PRIVATE
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| (SCARG(&ua, flags) & ~COMPAT_MAP_COPY);
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SCARG(&ua, prot) |= PROT_EXEC;
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}
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#endif
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NETBSD32TO64_UAP(fd);
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NETBSD32TOX_UAP(PAD, long);
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NETBSD32TOX_UAP(pos, off_t);
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#ifdef DEBUG_MMAP
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printf("mmap(addr=0x%lx, len=0x%lx, prot=0x%lx, flags=0x%lx, "
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"fd=%ld, pos=0x%lx);\n",
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(long)SCARG(&ua, addr), (long)SCARG(&ua, len),
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(long)SCARG(&ua, prot), (long)SCARG(&ua, flags),
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(long)SCARG(&ua, fd), (long)SCARG(&ua, pos));
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#endif
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error = sys_mmap(l, &ua, retval);
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if ((u_long)*retval > (u_long)UINT_MAX) {
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printf("netbsd32_mmap: retval out of range: 0x%lx\n",
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(u_long)*retval);
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/* Should try to recover and return an error here. */
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}
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return error;
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}
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