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linux_oldmmap.c revision 1.58.4.1 
      1 /*	$NetBSD: linux_oldmmap.c,v 1.58.4.1 2003/10/22 03:47:58 jmc Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1995, 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  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *	This product includes software developed by the NetBSD
     21  *	Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include <sys/cdefs.h>
     40 __KERNEL_RCSID(0, "$NetBSD: linux_oldmmap.c,v 1.58.4.1 2003/10/22 03:47:58 jmc Exp $");
     41 
     42 #include <sys/param.h>
     43 #include <sys/systm.h>
     44 #include <sys/mount.h>
     45 
     46 #include <sys/syscallargs.h>
     47 
     48 #include <compat/linux/common/linux_types.h>
     49 #include <compat/linux/common/linux_mmap.h>
     50 #include <compat/linux/common/linux_oldmmap.h>
     51 #include <compat/linux/common/linux_signal.h>
     52 
     53 #include <compat/linux/linux_syscallargs.h>
     54 
     55 /* Used on: arm, i386, m68k */
     56 /* Not used on: alpha, mips, pcc, sparc, sparc64 */
     57 
     58 #undef DPRINTF
     59 #ifdef DEBUG_LINUX
     60 #define DPRINTF(a)	uprintf a
     61 #else
     62 #define DPRINTF(a)
     63 #endif
     64 
     65 /*
     66  * Linux wants to pass everything to a syscall in registers.
     67  * However mmap() has 6 of them. Oops: out of register error.
     68  * They just pass everything in a structure.
     69  */
     70 int
     71 linux_sys_old_mmap(p, v, retval)
     72 	struct proc *p;
     73 	void *v;
     74 	register_t *retval;
     75 {
     76 	struct linux_sys_old_mmap_args /* {
     77 		syscallarg(struct linux_oldmmap *) lmp;
     78 	} */ *uap = v;
     79 	struct linux_oldmmap lmap;
     80 	struct linux_sys_mmap_args nlmap;
     81 	int error;
     82 
     83 	if ((error = copyin(SCARG(uap, lmp), &lmap, sizeof lmap)))
     84 		return error;
     85 
     86 	if (lmap.lm_pos & PAGE_MASK)
     87 		return EINVAL;
     88 
     89 	SCARG(&nlmap,addr) = (unsigned long)lmap.lm_addr;
     90 	SCARG(&nlmap,len) = lmap.lm_len;
     91 	SCARG(&nlmap,prot) = lmap.lm_prot;
     92 	SCARG(&nlmap,flags) = lmap.lm_flags;
     93 	SCARG(&nlmap,fd) = lmap.lm_fd;
     94 	SCARG(&nlmap,offset) = (unsigned)lmap.lm_pos;
     95 	DPRINTF(("old_mmap(%p, %d, %d, %d, %d, %d)\n",
     96 	    lmap.lm_addr, lmap.lm_len, lmap.lm_prot, lmap.lm_flags,
     97 	    lmap.lm_fd, lmap.lm_pos));
     98 	return linux_sys_mmap(p, &nlmap, retval);
     99 }
    100 
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