forked from android-rooting-tools/android_run_root_shell
-
Notifications
You must be signed in to change notification settings - Fork 1
/
ptmx.c
80 lines (64 loc) · 1.46 KB
/
ptmx.c
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
#include <string.h>
#include <memory.h>
#include "ptmx.h"
#include "kallsyms.h"
#include "device_database/device_database.h"
void *ptmx_fops;
unsigned long int ptmx_fops_mmap_address;
unsigned long int ptmx_fops_fsync_address;
bool
setup_ptmx_fops_address(void)
{
if (ptmx_fops) {
return true;
}
ptmx_fops = (void *)device_get_symbol_address(DEVICE_SYMBOL(ptmx_fops));
if (!ptmx_fops && kallsyms_exist()) {
ptmx_fops = kallsyms_get_symbol_address("ptmx_fops");
}
return !!ptmx_fops;
}
bool
setup_ptmx_fops_mmap_address(void)
{
if (!ptmx_fops) {
setup_ptmx_fops_address();
if (!ptmx_fops) {
return false;
}
}
ptmx_fops_mmap_address = (unsigned long int)ptmx_fops + 0x28;
return true;
}
bool
setup_ptmx_fops_fsync_address(void)
{
if (!ptmx_fops) {
setup_ptmx_fops_address();
if (!ptmx_fops) {
return false;
}
}
ptmx_fops_fsync_address = (unsigned long int)ptmx_fops + 0x38;
return true;
}
bool
setup_ptmx_fops_address_in_memory(void *mem, size_t length, find_ptmx_fops_hint_t *hint)
{
int i;
for (i = 0x24; i < length - 0x40; i += 4) {
unsigned long int *address = mem + i;
if (address[2] != hint->ptmx_open_address) {
continue;
}
if (address[4] != hint->tty_release_address) {
continue;
}
if (address[7] != hint->tty_fasync_address) {
continue;
}
ptmx_fops = (void *)convert_to_kernel_address(address, mem) - 0x24;
return true;
}
return false;
}