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
|
/* dlinfo -- Get information from the dynamic linker.
Copyright (C) 2003, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C 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.
The GNU C 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 the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <dlfcn.h>
#include <link.h>
#include <ldsodefs.h>
#include <libintl.h>
struct dlinfo_args
{
ElfW(Addr) caller;
void *handle;
int request;
void *arg;
};
static void
dlinfo_doit (void *argsblock)
{
struct dlinfo_args *const args = argsblock;
struct link_map *l = args->handle;
#if 0
if (args->handle == RTLD_SELF)
{
Lmid_t nsid;
/* Find the highest-addressed object that CALLER is not below. */
for (nsid = 0; nsid < DL_NNS; ++nsid)
for (l = GL(dl_ns)[nsid]._ns_loaded; l != NULL; l = l->l_next)
if (caller >= l->l_map_start && caller < l->l_map_end)
/* There must be exactly one DSO for the range of the virtual
memory. Otherwise something is really broken. */
break;
if (l == NULL)
GLRO(dl_signal_error) (0, NULL, NULL, N_("\
RTLD_SELF used in code not dynamically loaded"));
}
#endif
switch (args->request)
{
case RTLD_DI_CONFIGADDR:
default:
GLRO(dl_signal_error) (0, NULL, NULL, N_("unsupported dlinfo request"));
break;
case RTLD_DI_LMID:
*(Lmid_t *) args->arg = l->l_ns;
break;
case RTLD_DI_LINKMAP:
*(struct link_map **) args->arg = l;
break;
case RTLD_DI_SERINFO:
_dl_rtld_di_serinfo (l, args->arg, false);
break;
case RTLD_DI_SERINFOSIZE:
_dl_rtld_di_serinfo (l, args->arg, true);
break;
case RTLD_DI_ORIGIN:
strcpy (args->arg, l->l_origin);
break;
}
}
int
dlinfo (void *handle, int request, void *arg)
{
struct dlinfo_args args = { (ElfW(Addr)) RETURN_ADDRESS (0),
handle, request, arg };
return _dlerror_run (&dlinfo_doit, &args) ? -1 : 0;
}
|
