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
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/* GIMP - The GNU Image Manipulation Program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <signal.h>
#include <gio/gio.h>
#include "libgimpbase/gimpbase.h"
#include "core/core-types.h"
#include "core/gimp.h"
#include "errors.h"
#include "signals.h"
#ifdef G_OS_WIN32
#ifdef HAVE_EXCHNDL
#include <windows.h>
#include <time.h>
#include <exchndl.h>
static LPTOP_LEVEL_EXCEPTION_FILTER g_prevExceptionFilter = NULL;
static LONG WINAPI gimp_sigfatal_handler (PEXCEPTION_POINTERS pExceptionInfo);
#endif
#else
static void gimp_sigfatal_handler (gint sig_num) G_GNUC_NORETURN;
#endif
void
gimp_init_signal_handlers (gchar **backtrace_file)
{
time_t t;
gchar *filename;
gchar *dir;
#ifdef G_OS_WIN32
/* This has to be the non-roaming directory (i.e., the local
directory) as backtraces correspond to the binaries on this
system. */
dir = g_build_filename (g_get_user_data_dir (),
GIMPDIR, GIMP_USER_VERSION, "CrashLog",
NULL);
#else
dir = g_build_filename (gimp_directory (), "CrashLog", NULL);
#endif
time (&t);
filename = g_strdup_printf ("%s-crash-%" G_GUINT64_FORMAT ".txt",
PACKAGE_NAME, (guint64) t);
*backtrace_file = g_build_filename (dir, filename, NULL);
g_free (filename);
g_free (dir);
#ifdef G_OS_WIN32
/* Use Dr. Mingw (dumps backtrace on crash) if it is available. Do
* nothing otherwise on Win32.
* The user won't get any stack trace from glib anyhow.
* Without Dr. MinGW, It's better to let Windows inform about the
* program error, and offer debugging (if the user has installed MSVC
* or some other compiler that knows how to install itself as a
* handler for program errors).
*/
#ifdef HAVE_EXCHNDL
/* Order is very important here. We need to add our signal handler
* first, then run ExcHndlInit() which will add its own handler, so
* that ExcHnl's handler runs first since that's in FILO order.
*/
if (! g_prevExceptionFilter)
g_prevExceptionFilter = SetUnhandledExceptionFilter (gimp_sigfatal_handler);
ExcHndlInit ();
ExcHndlSetLogFileNameA (*backtrace_file);
#endif /* HAVE_EXCHNDL */
#else
/* Handle fatal signals */
/* these are handled by gimp_terminate() */
gimp_signal_private (SIGHUP, gimp_sigfatal_handler, 0);
gimp_signal_private (SIGINT, gimp_sigfatal_handler, 0);
gimp_signal_private (SIGQUIT, gimp_sigfatal_handler, 0);
gimp_signal_private (SIGTERM, gimp_sigfatal_handler, 0);
/* these are handled by gimp_fatal_error() */
gimp_signal_private (SIGABRT, gimp_sigfatal_handler, 0);
gimp_signal_private (SIGBUS, gimp_sigfatal_handler, 0);
gimp_signal_private (SIGSEGV, gimp_sigfatal_handler, 0);
gimp_signal_private (SIGFPE, gimp_sigfatal_handler, 0);
/* Ignore SIGPIPE because plug_in.c handles broken pipes */
gimp_signal_private (SIGPIPE, SIG_IGN, 0);
/* Restart syscalls on SIGCHLD */
gimp_signal_private (SIGCHLD, SIG_DFL, SA_RESTART);
#endif /* G_OS_WIN32 */
}
#ifdef G_OS_WIN32
#ifdef HAVE_EXCHNDL
static LONG WINAPI
gimp_sigfatal_handler (PEXCEPTION_POINTERS pExceptionInfo)
{
EXCEPTION_RECORD *er;
int fatal;
if (pExceptionInfo == NULL ||
pExceptionInfo->ExceptionRecord == NULL)
return EXCEPTION_CONTINUE_SEARCH;
er = pExceptionInfo->ExceptionRecord;
fatal = I_RpcExceptionFilter (er->ExceptionCode);
/* IREF() returns EXCEPTION_CONTINUE_SEARCH for fatal exceptions */
if (fatal == EXCEPTION_CONTINUE_SEARCH)
{
/* Just in case, so that we don't loop or anything similar, just
* re-establish previous handler.
*/
SetUnhandledExceptionFilter (g_prevExceptionFilter);
/* Now process the exception. */
gimp_fatal_error ("unhandled exception");
}
if (g_prevExceptionFilter && g_prevExceptionFilter != gimp_sigfatal_handler)
return g_prevExceptionFilter (pExceptionInfo);
else
return EXCEPTION_CONTINUE_SEARCH;
}
#endif
#else
/* gimp core signal handler for fatal signals */
static void
gimp_sigfatal_handler (gint sig_num)
{
switch (sig_num)
{
case SIGHUP:
case SIGINT:
case SIGQUIT:
case SIGTERM:
gimp_terminate (g_strsignal (sig_num));
break;
case SIGABRT:
case SIGBUS:
case SIGSEGV:
case SIGFPE:
default:
gimp_fatal_error (g_strsignal (sig_num));
break;
}
}
#endif /* G_OS_WIN32 */
|
