1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
/*
* Convenience functions to handle use of external debugger.
*
* Copyright 1999 Kevin Holbrook
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <unistd.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#define DBG_BUFF_SIZE 12
#define DBG_EXTERNAL_DEFAULT "gdb"
#define DBG_LOCATION_DEFAULT "/usr/local/bin/wine"
#define DBG_SLEEPTIME_DEFAULT 120
/* DEBUG_ExternalDebugger
*
* This function invokes an external debugger on the current
* wine process. The form of the command executed is:
* <debugger image> <wine image> <attach process id>
*
* The debugger command is normally invoked by a newly created xterm.
*
* The current calling process is temporarily put to sleep
* so that the invoked debugger has time to come up and attach.
*
* The following environment variables may be used:
*
* Name Use Default
* -------------------------------------------------------------------------------------
* WINE_DBG_EXTERNAL debugger command to invoke ("gdb")
* WINE_DBG_LOCATION fully qualified location of wine image ("/usr/local/bin/wine")
* WINE_DBG_NO_XTERM if set do not invoke xterm with command (not set)
* WINE_DBG_SLEEPTIME number of seconds to make process sleep (120)
*
*
* Usage:
*
* #include "wine/debug.h"
*
* DEBUG_ExternalDebugger();
*
*
* Environment Example:
*
* export WINE_DBG_EXTERNAL="ddd"
* export WINE_DBG_NO_XTERM=1
* export WINE_DBG_SLEEPTIME=60
*
*/
void DEBUG_ExternalDebugger(void)
{
pid_t attach_pid;
pid_t child_pid;
int dbg_sleep_secs = DBG_SLEEPTIME_DEFAULT;
char *dbg_sleeptime;
dbg_sleeptime = getenv("WINE_DBG_SLEEPTIME");
/* convert sleep time string to integer seconds */
if (dbg_sleeptime)
{
dbg_sleep_secs = atoi(dbg_sleeptime);
/* check for conversion error */
if (dbg_sleep_secs == 0)
dbg_sleep_secs = DBG_SLEEPTIME_DEFAULT;
}
/* get the current process id */
attach_pid = getpid();
/* create new process */
child_pid = fork();
/* check if we are the child process */
if (child_pid == 0)
{
int status;
const char *dbg_external;
const char *dbg_wine_location;
const char *dbg_no_xterm;
char pid_string[DBG_BUFF_SIZE];
/* check settings in environment for debugger to use */
dbg_external = getenv("WINE_DBG_EXTERNAL");
dbg_wine_location = getenv("WINE_DBG_LOCATION");
dbg_no_xterm = getenv("WINE_DBG_NO_XTERM");
/* if not set in environment, use default */
if (!dbg_external)
dbg_external = "gdb";
/* if not set in environment, use default */
if (!dbg_wine_location)
dbg_wine_location = "wine";
/* check for empty string in WINE_DBG_NO_XTERM */
if (dbg_no_xterm && (strlen(dbg_no_xterm) < 1))
dbg_no_xterm = NULL;
/* clear the buffer */
memset(pid_string, 0, DBG_BUFF_SIZE);
/* make pid into string */
sprintf(pid_string, "%ld", (long) attach_pid);
/* now exec the debugger to get it's own clean memory space */
if (dbg_no_xterm)
status = execlp(dbg_external, dbg_external, dbg_wine_location, pid_string, NULL);
else
status = execlp("xterm", "xterm", "-e", dbg_external, dbg_wine_location, pid_string, NULL);
if (status == -1)
{
if (dbg_no_xterm)
fprintf(stderr, "DEBUG_ExternalDebugger failed to execute \"%s %s %s\" (%s)\n",
dbg_external, dbg_wine_location, pid_string, strerror(errno));
else
fprintf(stderr, "DEBUG_ExternalDebugger failed to execute \"xterm -e %s %s %s\" (%s)\n",
dbg_external, dbg_wine_location, pid_string, strerror(errno));
}
}
else if (child_pid != -1)
{
/* make the parent/caller sleep so the child/debugger can catch it */
sleep(dbg_sleep_secs);
}
else
fprintf(stderr, "DEBUG_ExternalDebugger failed.\n");
}
|
