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
|
/*
Unix SMB/CIFS implementation.
module loading system
Copyright (C) Jelmer Vernooij 2002
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#ifdef HAVE_DLOPEN
int smb_load_module(const char *module_name)
{
void *handle;
init_module_function *init;
int status;
const char *error;
/* Always try to use LAZY symbol resolving; if the plugin has
* backwards compatibility, there might be symbols in the
* plugin referencing to old (removed) functions
*/
handle = sys_dlopen(module_name, RTLD_LAZY);
if(!handle) {
DEBUG(0, ("Error loading module '%s': %s\n", module_name, sys_dlerror()));
return False;
}
init = sys_dlsym(handle, "init_module");
/* we must check sys_dlerror() to determine if it worked, because
sys_dlsym() can validly return NULL */
error = sys_dlerror();
if (error) {
DEBUG(0, ("Error trying to resolve symbol 'init_module' in %s: %s\n", module_name, error));
return False;
}
status = init();
DEBUG(2, ("Module '%s' loaded\n", module_name));
return status;
}
/* Load all modules in list and return number of
* modules that has been successfully loaded */
int smb_load_modules(const char **modules)
{
int i;
int success = 0;
for(i = 0; modules[i]; i++){
if(smb_load_module(modules[i])) {
success++;
}
}
DEBUG(2, ("%d modules successfully loaded\n", success));
return success;
}
int smb_probe_module(const char *subsystem, const char *module)
{
pstring full_path;
/* Check for absolute path */
if(module[0] == '/')return smb_load_module(module);
pstrcpy(full_path, lib_path(subsystem));
pstrcat(full_path, "/");
pstrcat(full_path, module);
pstrcat(full_path, ".");
pstrcat(full_path, shlib_ext());
return smb_load_module(full_path);
}
#else /* HAVE_DLOPEN */
int smb_load_module(const char *module_name)
{
DEBUG(0,("This samba executable has not been built with plugin support"));
return False;
}
int smb_load_modules(const char **modules)
{
DEBUG(0,("This samba executable has not been built with plugin support"));
return False;
}
int smb_probe_module(const char *subsystem, const char *module)
{
DEBUG(0,("This samba executable has not been built with plugin support, not probing"));
return False;
}
#endif /* HAVE_DLOPEN */
void init_modules(void)
{
if(lp_preload_modules())
smb_load_modules(lp_preload_modules());
/* FIXME: load static modules */
}
|
