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
|
/* GMODULE - GLIB wrapper code for dynamic module loading
* Copyright (C) 1998, 2000 Tim Janik
*
* dyld (Darwin) GMODULE implementation
* Copyright (C) 2001 Dan Winship
*
* 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 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 <mach-o/dyld.h>
static gpointer self_module = GINT_TO_POINTER (1);
static gpointer
_g_module_open (const gchar *file_name,
gboolean bind_lazy)
{
NSObjectFileImage image;
NSObjectFileImageReturnCode ret;
NSModule module;
unsigned long options;
char *msg;
ret = NSCreateObjectFileImageFromFile (file_name, &image);
if (ret != NSObjectFileImageSuccess)
{
switch (ret)
{
case NSObjectFileImageInappropriateFile:
case NSObjectFileImageFormat:
msg = g_strdup_printf ("%s is not a loadable module", file_name);
break;
case NSObjectFileImageArch:
msg = g_strdup_printf ("%s is not built for this architecture",
file_name);
break;
case NSObjectFileImageAccess:
if (access (file_name, F_OK) == 0)
msg = g_strdup_printf ("%s: permission denied", file_name);
else
msg = g_strdup_printf ("%s: no such file or directory", file_name);
break;
default:
msg = g_strdup_printf ("unknown error for %s", file_name);
break;
}
g_module_set_error (msg);
g_free (msg);
return NULL;
}
options = NSLINKMODULE_OPTION_RETURN_ON_ERROR | NSLINKMODULE_OPTION_PRIVATE;
if (!bind_lazy)
options |= NSLINKMODULE_OPTION_BINDNOW;
module = NSLinkModule (image, file_name, options);
NSDestroyObjectFileImage (image);
if (!module)
{
NSLinkEditErrors c;
int error_number;
const char *file, *error;
NSLinkEditError (&c, &error_number, &file, &error);
msg = g_strdup_printf ("could not link %s: %s", file_name, error);
g_module_set_error (msg);
g_free (msg);
return NULL;
}
return module;
}
static gpointer
_g_module_self (void)
{
return &self_module;
}
static void
_g_module_close (gpointer handle,
gboolean is_unref)
{
if (handle == &self_module)
return;
if (!NSUnLinkModule (handle, 0))
g_module_set_error ("could not unlink module");
}
static gpointer
_g_module_symbol (gpointer handle,
const gchar *symbol_name)
{
NSSymbol sym;
char *msg;
if (handle == &self_module)
{
if (NSIsSymbolNameDefined (symbol_name))
sym = NSLookupAndBindSymbol (symbol_name);
else
sym = NULL;
}
else
sym = NSLookupSymbolInModule (handle, symbol_name);
if (!sym)
{
msg = g_strdup_printf ("no such symbol %s", symbol_name);
g_module_set_error (msg);
g_free (msg);
return NULL;
}
return NSAddressOfSymbol (sym);
}
static gchar*
_g_module_build_path (const gchar *directory,
const gchar *module_name)
{
if (directory && *directory)
{
if (strncmp (module_name, "lib", 3) == 0)
return g_strconcat (directory, "/", module_name, NULL);
else
return g_strconcat (directory, "/lib", module_name, "." G_MODULE_SUFFIX, NULL);
}
else if (strncmp (module_name, "lib", 3) == 0)
return g_strdup (module_name);
else
return g_strconcat ("lib", module_name, "." G_MODULE_SUFFIX, NULL);
}
|
