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linux_ptrace.c revision 1.1 
      1 /*	$NetBSD: linux_ptrace.c,v 1.1 1999/12/12 00:00:16 tron Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Matthias Scheler.
      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/types.h>
     40 #include <sys/param.h>
     41 #include <sys/mount.h>
     42 #include <sys/proc.h>
     43 #include <sys/ptrace.h>
     44 #include <sys/systm.h>
     45 #include <sys/syscallargs.h>
     46 
     47 #include <compat/linux/common/linux_types.h>
     48 #include <compat/linux/common/linux_ptrace.h>
     49 #include <compat/linux/common/linux_signal.h>
     50 
     51 #include <compat/linux/common/linux_util.h>
     52 #include <compat/linux/common/linux_machdep.h>
     53 
     54 #include <compat/linux/linux_syscallargs.h>
     55 
     56 int
     57 linux_sys_ptrace(p, v, retval)
     58 	struct proc *p;
     59 	void *v;
     60 	register_t *retval;
     61 {
     62 	struct linux_sys_ptrace_args /* {
     63 		syscallarg(int) request;
     64 		syscallarg(int) pid;
     65 		syscallarg(int) addr;
     66 		syscallarg(int) data;
     67 	} */ *uap = v;
     68 	struct sys_ptrace_args pta;
     69 	caddr_t sg;
     70 
     71 	sg = stackgap_init(p->p_emul);
     72 
     73 	SCARG(&pta, pid) = SCARG(uap, pid);
     74 	SCARG(&pta, addr) = (caddr_t)SCARG(uap, addr);
     75 	SCARG(&pta, data) = SCARG(uap, data);
     76 
     77 	switch (SCARG(uap, request)) {
     78 	case LINUX_PTRACE_TRACEME:
     79 		SCARG(&pta, req) = PT_TRACE_ME;
     80 		break;
     81 	case LINUX_PTRACE_KILL:
     82 		SCARG(&pta, req) = PT_KILL;
     83 		break;
     84 	case LINUX_PTRACE_ATTACH:
     85 		SCARG(&pta, req) = PT_ATTACH;
     86 		break;
     87 	case LINUX_PTRACE_DETACH:
     88 		SCARG(&pta, req) = PT_DETACH;
     89 		break;
     90 	default:
     91 		return EIO;
     92 	}
     93 
     94 	return sys_ptrace(p, &pta, retval);
     95 }
     96