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
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
/*
* Copyright 1995-1998 by Metro Link, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
* the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of Metro Link, Inc. not be used in
* advertising or publicity pertaining to distribution of the software without
* specific, written prior permission. Metro Link, Inc. makes no
* representations about the suitability of this software for any purpose.
* It is provided "as is" without express or implied warranty.
*
* METRO LINK, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
* EVENT SHALL METRO LINK, INC. BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/*
* Copyright (c) 1997-2003 by The XFree86 Project, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of the copyright holder(s)
* and author(s) shall not be used in advertising or otherwise to promote
* the sale, use or other dealings in this Software without prior written
* authorization from the copyright holder(s) and author(s).
*/
#ifdef HAVE_XORG_CONFIG_H
#include <xorg-config.h>
#endif
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <stdarg.h>
#include "os.h"
#include "loader.h"
#include "loaderProcs.h"
#include "xf86.h"
#include "xf86Priv.h"
#include "compiler.h"
#ifdef HAVE_DLFCN_H
#include <dlfcn.h>
#include <X11/Xos.h>
#if defined(DL_LAZY)
#define DLOPEN_LAZY DL_LAZY
#elif defined(RTLD_LAZY)
#define DLOPEN_LAZY RTLD_LAZY
#elif defined(__FreeBSD__)
#define DLOPEN_LAZY 1
#else
#define DLOPEN_LAZY 0
#endif
#if defined(LD_GLOBAL)
#define DLOPEN_GLOBAL LD_GLOBAL
#elif defined(RTLD_GLOBAL)
#define DLOPEN_GLOBAL RTLD_GLOBAL
#else
#define DLOPEN_GLOBAL 0
#endif
#else
#error i have no dynamic linker and i must scream
#endif
extern void *xorg_symbols[];
void
LoaderInit(void)
{
xf86MsgVerb(X_INFO, 2, "Loader magic: %p\n", (void *) xorg_symbols);
xf86MsgVerb(X_INFO, 2, "Module ABI versions:\n");
xf86ErrorFVerb(2, "\t%s: %d.%d\n", ABI_CLASS_ANSIC,
GET_ABI_MAJOR(LoaderVersionInfo.ansicVersion),
GET_ABI_MINOR(LoaderVersionInfo.ansicVersion));
xf86ErrorFVerb(2, "\t%s: %d.%d\n", ABI_CLASS_VIDEODRV,
GET_ABI_MAJOR(LoaderVersionInfo.videodrvVersion),
GET_ABI_MINOR(LoaderVersionInfo.videodrvVersion));
xf86ErrorFVerb(2, "\t%s : %d.%d\n", ABI_CLASS_XINPUT,
GET_ABI_MAJOR(LoaderVersionInfo.xinputVersion),
GET_ABI_MINOR(LoaderVersionInfo.xinputVersion));
xf86ErrorFVerb(2, "\t%s : %d.%d\n", ABI_CLASS_EXTENSION,
GET_ABI_MAJOR(LoaderVersionInfo.extensionVersion),
GET_ABI_MINOR(LoaderVersionInfo.extensionVersion));
}
/* Public Interface to the loader. */
void *
LoaderOpen(const char *module, int *errmaj, int *errmin)
{
void *ret;
#if defined(DEBUG)
ErrorF("LoaderOpen(%s)\n", module);
#endif
xf86Msg(X_INFO, "Loading %s\n", module);
if (!(ret = dlopen(module, DLOPEN_LAZY | DLOPEN_GLOBAL))) {
xf86Msg(X_ERROR, "Failed to load %s: %s\n", module, dlerror());
if (errmaj)
*errmaj = LDR_NOLOAD;
if (errmin)
*errmin = LDR_NOLOAD;
return NULL;
}
return ret;
}
void *
LoaderSymbol(const char *name)
{
static void *global_scope = NULL;
void *p;
p = dlsym(RTLD_DEFAULT, name);
if (p != NULL)
return p;
if (!global_scope)
global_scope = dlopen(NULL, DLOPEN_LAZY | DLOPEN_GLOBAL);
if (global_scope)
return dlsym(global_scope, name);
return NULL;
}
void *
LoaderSymbolFromModule(void *handle, const char *name)
{
return dlsym(handle, name);
}
void
LoaderUnload(const char *name, void *handle)
{
LogMessageVerbSigSafe(X_INFO, 1, "Unloading %s\n", name);
if (handle)
dlclose(handle);
}
unsigned long LoaderOptions = 0;
void
LoaderSetOptions(unsigned long opts)
{
LoaderOptions |= opts;
}
Bool
LoaderShouldIgnoreABI(void)
{
return (LoaderOptions & LDR_OPT_ABI_MISMATCH_NONFATAL) != 0;
}
int
LoaderGetABIVersion(const char *abiclass)
{
struct {
const char *name;
int version;
} classes[] = {
{ABI_CLASS_ANSIC, LoaderVersionInfo.ansicVersion},
{ABI_CLASS_VIDEODRV, LoaderVersionInfo.videodrvVersion},
{ABI_CLASS_XINPUT, LoaderVersionInfo.xinputVersion},
{ABI_CLASS_EXTENSION, LoaderVersionInfo.extensionVersion},
{ABI_CLASS_FONT, LoaderVersionInfo.fontVersion},
{NULL, 0}
};
int i;
for (i = 0; classes[i].name; i++) {
if (!strcmp(classes[i].name, abiclass)) {
return classes[i].version;
}
}
return 0;
}
|
