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
|
#include <stdlib.h>
#include <unistd.h>
#include <sys/mman.h>
#include "_dl_int.h"
#ifdef __DIET_LD_SO__
static struct _dl_handle*_dl_root_handle=(struct _dl_handle*)0;
static struct _dl_handle*_dl_top_handle=(struct _dl_handle*)0;
static struct _dl_handle*_dl_free_list=(struct _dl_handle*)0;
#else
struct _dl_handle*_dl_root_handle=(struct _dl_handle*)0;
struct _dl_handle*_dl_top_handle=(struct _dl_handle*)0;
struct _dl_handle*_dl_free_list=(struct _dl_handle*)0;
#endif
#ifdef __DIET_LD_SO__
static
#endif
void _dl_free_handle(struct _dl_handle*dh) {
if (_dl_root_handle==dh) _dl_root_handle=dh->next;
if (_dl_top_handle ==dh) _dl_top_handle=dh->prev;
if (dh->next) dh->next->prev=dh->prev;
if (dh->prev) dh->prev->next=dh->next;
if ((dh->flags&RTLD_NOSONAME) && dh->name) free(dh->name);
memset(dh,0,sizeof(struct _dl_handle));
dh->next=_dl_free_list;
_dl_free_list=dh;
}
#ifdef __DIET_LD_SO__
static
#endif
struct _dl_handle*_dl_get_handle() {
struct _dl_handle*tmp;
if (_dl_free_list==0) {
register int i,m;
#ifdef __DIET_LD_SO__
tmp = (struct _dl_handle*)_dl_sys_mmap(0,at_pagesize,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS,-1,0);
m=at_pagesize/sizeof(struct _dl_handle);
#else
int ps=getpagesize();
tmp = (struct _dl_handle*)mmap(0,ps,PROT_READ|PROT_WRITE,MAP_PRIVATE|MAP_ANONYMOUS,-1,0);
m=ps/sizeof(struct _dl_handle);
#endif
for (i=m;i;) _dl_free_handle(tmp+(--i));
}
tmp = _dl_free_list;
_dl_free_list = tmp->next;
tmp->next=0;
if (_dl_root_handle) {
_dl_top_handle->next=tmp;
tmp->prev=_dl_top_handle;
} else
_dl_root_handle = tmp;
_dl_top_handle=tmp;
return tmp;
}
#ifdef __DIET_LD_SO__
static
#endif
struct _dl_handle*_dl_find_lib(const char* name) {
if (name) {
if (_dl_root_handle) {
struct _dl_handle*tmp;
for (tmp=_dl_root_handle;tmp;tmp=tmp->next) {
if (!tmp->name) continue;
if (!strcmp(tmp->name,name)) return tmp;
}
}
}
return 0;
}
|
