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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /* $NetBSD: procfs_regs.c,v 1.8 1994/06/29 06:34:54 cgd Exp $ */
26:
27: /*
28: * Copyright (c) 1993 Jan-Simon Pendry
29: * Copyright (c) 1993
30: * The Regents of the University of California. All rights reserved.
31: *
32: * This code is derived from software contributed to Berkeley by
33: * Jan-Simon Pendry.
34: *
35: * Redistribution and use in source and binary forms, with or without
36: * modification, are permitted provided that the following conditions
37: * are met:
38: * 1. Redistributions of source code must retain the above copyright
39: * notice, this list of conditions and the following disclaimer.
40: * 2. Redistributions in binary form must reproduce the above copyright
41: * notice, this list of conditions and the following disclaimer in the
42: * documentation and/or other materials provided with the distribution.
43: * 3. All advertising materials mentioning features or use of this software
44: * must display the following acknowledgement:
45: * This product includes software developed by the University of
46: * California, Berkeley and its contributors.
47: * 4. Neither the name of the University nor the names of its contributors
48: * may be used to endorse or promote products derived from this software
49: * without specific prior written permission.
50: *
51: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
52: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
53: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
54: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
55: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
56: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
57: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
58: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
59: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
60: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
61: * SUCH DAMAGE.
62: *
63: * @(#)procfs_regs.c 8.4 (Berkeley) 6/15/94
64: */
65:
66: #include <sys/param.h>
67: #include <sys/systm.h>
68: #include <sys/time.h>
69: #include <sys/kernel.h>
70: #include <sys/proc.h>
71: #include <sys/vnode.h>
72: #include <sys/ptrace.h>
73: #include <machine/reg.h>
74: #include <miscfs/procfs/procfs.h>
75:
76: int
77: procfs_doregs(curp, p, pfs, uio)
78: struct proc *curp;
79: struct proc *p;
80: struct pfsnode *pfs;
81: struct uio *uio;
82: {
83: #if defined(PT_GETREGS) || defined(PT_SETREGS)
84: int error;
85: struct reg r;
86: char *kv;
87: int kl;
88:
89: kl = sizeof(r);
90: kv = (char *) &r;
91:
92: kv += uio->uio_offset;
93: kl -= uio->uio_offset;
94: if (kl > uio->uio_resid)
95: kl = uio->uio_resid;
96:
97: if (kl < 0)
98: error = EINVAL;
99: else
100: error = process_read_regs(p, &r);
101: if (error == 0)
102: error = uiomove(kv, kl, uio);
103: if (error == 0 && uio->uio_rw == UIO_WRITE) {
104: if (p->p_stat != SSTOP)
105: error = EBUSY;
106: else
107: error = process_write_regs(p, &r);
108: }
109:
110: uio->uio_offset = 0;
111: return (error);
112: #else
113: return (EINVAL);
114: #endif
115: }
116:
117: int
118: procfs_validregs(p)
119: struct proc *p;
120: {
121:
122: #if defined(PT_SETREGS) || defined(PT_GETREGS)
123: return ((p->p_flag & P_SYSTEM) == 0);
124: #else
125: return (0);
126: #endif
127: }
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