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
|
/***********************************************************
** Copyright (C), 2008-2019, OPLUS Mobile Comm Corp., Ltd.
** File: hans.h
** Description: Add for hans freeze manager
**
** Version: 1.0
** Date : 2019/09/23
**
** ------------------ Revision History:------------------------
** <author> <data> <version > <desc>
** Kun Zhou 2019/09/23 1.0 OPLUS_ARCH_EXTENDS
** Kun Zhou 2019/09/23 1.1 OPLUS_FEATURE_HANS_FREEZE
****************************************************************/
#ifndef _HANS_H
#define _HANS_H
#include <linux/freezer.h>
#include <linux/cgroup.h>
#include "../../kernel/sched/sched.h"
#define HANS_NOERROR (0)
#define HANS_ERROR (-1)
#define MIN_USERAPP_UID (10000)
#define HANS_SYSTEM_UID (1000)
#define INTERFACETOKEN_BUFF_SIZE (140)
#define PARCEL_OFFSET (16) // sync with the writeInterfaceToken
#define CPUCTL_VERSION (2)
#define CHECK_KERN_SUPPORT_CGRPV2 (-8000)
#define HANS_USE_CGRPV2 (-99)
/* hans_message for comunication with HANS native deamon
* type: async binder/sync binder/signal/pkg/loopback
* Only loop back type is duplex (native deamon <---> kernel) for handshake
* port: native deamon pid
* caller_pid: binder, caller -> unfreeze (target) UID
* target_uid: UID want to be unfrozen
* pkg_cmd: Add/Remove monitored UID
*/
struct hans_message {
int type;
int port; // pid
int caller_uid;
int caller_pid; // caller -> unfreeze UID
int target_pid;
int target_uid; // unfreeze UID, pkg add/remove UID
int pkg_cmd; //Add/remove monitored uid
int code;
char rpc_name[INTERFACETOKEN_BUFF_SIZE];
};
// hans message type definition
enum message_type {
//kernel --> native deamon
ASYNC_BINDER,
SYNC_BINDER,
FROZEN_TRANS,
SIGNAL,
PKG,
SYNC_BINDER_CPUCTL,
SIGNAL_CPUCTL,
CPUCTL_TRANS,
// kernel <--> native deamon
LOOP_BACK,
TYPE_MAX
};
// pkg cmd type
enum pkg_cmd {
ADD_ONE_UID,
DEL_ONE_UID,
DEL_ALL_UID,
PKG_CMD_MAX
};
//Check if the thread group is frozen
static inline bool is_jobctl_frozen(struct task_struct *task)
{
return ((task->jobctl & JOBCTL_TRAP_FREEZE) != 0);
}
static inline bool is_frozen_tg(struct task_struct* task)
{
return ((cgroup_task_frozen(task) && is_jobctl_frozen(task)) || frozen(task->group_leader) || freezing(task->group_leader));
}
int hans_report(enum message_type type, int caller_pid, int caller_uid, int target_pid, int target_uid, const char *rpc_name, int code);
void hans_network_cmd_parse(uid_t uid, enum pkg_cmd cmd);
void hans_check_frozen_transcation(uid_t uid, enum message_type type);
int hans_netfilter_init(void);
void hans_netfilter_deinit(void);
#if defined(CONFIG_CFS_BANDWIDTH)
static inline bool is_belong_cpugrp(struct task_struct *task)
{
if (task->sched_task_group != NULL) {
struct cfs_bandwidth cfs_b = task->sched_task_group->cfs_bandwidth;
if (cfs_b.quota != -1) {
return true;
} else if (cfs_b.quota == -1) {
return false;
}
}
return false;
}
#else
static inline bool is_belong_cpugrp(struct task_struct *task)
{
return false;
}
#endif
#endif
|
