Collapse gd_astpending and gd_reqpri together into gd_reqflags. gd_reqflags
[dragonfly.git] / sys / ddb / db_sysctl.c
CommitLineData
984263bc
MD
1
2/*
3 * db_sysctl.c
4 *
5 * Copyright (c) 2000 Whistle Communications, Inc.
6 * All rights reserved.
7 *
8 * Subject to the following obligations and disclaimer of warranty, use and
9 * redistribution of this software, in source or object code forms, with or
10 * without modifications are expressly permitted by Whistle Communications;
11 * provided, however, that:
12 * 1. Any and all reproductions of the source or object code must include the
13 * copyright notice above and the following disclaimer of warranties; and
14 * 2. No rights are granted, in any manner or form, to use Whistle
15 * Communications, Inc. trademarks, including the mark "WHISTLE
16 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as
17 * such appears in the above copyright notice or in the software.
18 *
19 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND
20 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO
21 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE,
22 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF
23 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
24 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY
25 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS
26 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE.
27 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES
28 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING
29 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
30 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR
31 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
34 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY
35 * OF SUCH DAMAGE.
36 *
37 * Author: Archie Cobbs <archie@whistle.com>
38 *
39 * $FreeBSD: src/sys/ddb/db_sysctl.c,v 1.1.4.1 2000/08/03 00:09:27 ps Exp $
1de703da 40 * $DragonFly: src/sys/ddb/db_sysctl.c,v 1.2 2003/06/17 04:28:20 dillon Exp $
984263bc
MD
41 */
42
43#include <sys/param.h>
44#include <sys/systm.h>
45#include <sys/kernel.h>
46#include <sys/sysctl.h>
47#include <sys/reboot.h>
48
49#define DESCRIPTION "Set to `ddb' or `gdb' to enter the kernel debugger"
50#define READ_MODE ""
51#define MODE_DDB "ddb"
52#define MODE_GDB "gdb"
53
54static int
55sysctl_debug_enter_debugger(SYSCTL_HANDLER_ARGS)
56{
57 char dmode[64];
58 int error;
59
60 strncpy(dmode, READ_MODE, sizeof(dmode) - 1);
61 dmode[sizeof(dmode) - 1] = '\0';
62 error = sysctl_handle_string(oidp, &dmode[0], sizeof(dmode), req);
63
64 if (error == 0 && req->newptr != NULL) {
65 if (strcmp(dmode, MODE_DDB) == 0)
66 boothowto &= ~RB_GDB;
67 else if (strcmp(dmode, MODE_GDB) == 0)
68 boothowto |= RB_GDB;
69 else
70 return EINVAL;
71 Debugger("debug.enter_debugger");
72 }
73 return error;
74}
75
76SYSCTL_PROC(_debug, OID_AUTO, enter_debugger, CTLTYPE_STRING | CTLFLAG_RW,
77 0, 0, sysctl_debug_enter_debugger, "A", DESCRIPTION);
78