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
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
#include <unistd.h>
#include <stdio.h>
#include <limits.h>
#include <stdlib.h>
#include "cr_options.h"
#include "common/list.h"
#include "xmalloc.h"
#include "log.h"
#include "servicefd.h"
#include "cr-service.h"
#include "action-scripts.h"
#include "pstree.h"
#include "common/bug.h"
#include "util.h"
#include <sys/un.h>
#include <sys/socket.h>
#include "common/scm.h"
static const char *action_names[ACT_MAX] = {
[ACT_PRE_DUMP] = "pre-dump",
[ACT_POST_DUMP] = "post-dump",
[ACT_PRE_RESTORE] = "pre-restore",
[ACT_POST_RESTORE] = "post-restore",
[ACT_NET_LOCK] = "network-lock",
[ACT_NET_UNLOCK] = "network-unlock",
[ACT_SETUP_NS] = "setup-namespaces",
[ACT_POST_SETUP_NS] = "post-setup-namespaces",
[ACT_PRE_RESUME] = "pre-resume",
[ACT_POST_RESUME] = "post-resume",
[ACT_ORPHAN_PTS_MASTER] = "orphan-pts-master",
[ACT_STATUS_READY] = "status-ready",
};
struct script {
struct list_head node;
char *path;
};
enum { SCRIPTS_NONE, SCRIPTS_SHELL, SCRIPTS_RPC };
static int scripts_mode = SCRIPTS_NONE;
static LIST_HEAD(scripts);
static int run_shell_scripts(const char *action)
{
int retval = 0;
struct script *script;
static unsigned env_set = 0;
#define ENV_IMGDIR 0x1
#define ENV_ROOTPID 0x2
if (setenv("CRTOOLS_SCRIPT_ACTION", action, 1)) {
pr_perror("Can't set CRTOOLS_SCRIPT_ACTION=%s", action);
return -1;
}
if (!(env_set & ENV_IMGDIR)) {
char image_dir[PATH_MAX];
sprintf(image_dir, "/proc/%ld/fd/%d", (long)getpid(), get_service_fd(IMG_FD_OFF));
if (setenv("CRTOOLS_IMAGE_DIR", image_dir, 1)) {
pr_perror("Can't set CRTOOLS_IMAGE_DIR=%s", image_dir);
return -1;
}
env_set |= ENV_IMGDIR;
}
if (!(env_set & ENV_ROOTPID) && root_item) {
int pid;
pid = root_item->pid->real;
if (pid != -1) {
char root_item_pid[16];
snprintf(root_item_pid, sizeof(root_item_pid), "%d", pid);
if (setenv("CRTOOLS_INIT_PID", root_item_pid, 1)) {
pr_perror("Can't set CRTOOLS_INIT_PID=%s", root_item_pid);
return -1;
}
env_set |= ENV_ROOTPID;
}
}
list_for_each_entry(script, &scripts, node) {
int err;
pr_debug("\t[%s]\n", script->path);
err = cr_system(-1, -1, -1, script->path, (char *[]){ script->path, NULL }, 0);
if (err)
pr_err("Script %s exited with %d\n", script->path, err);
retval |= err;
}
unsetenv("CRTOOLS_SCRIPT_ACTION");
return retval;
}
int rpc_send_fd(enum script_actions act, int fd)
{
const char *action = action_names[act];
int rpc_sk;
if (scripts_mode != SCRIPTS_RPC)
return -1;
rpc_sk = get_service_fd(RPC_SK_OFF);
if (rpc_sk < 0)
return -1;
pr_debug("\tRPC\n");
return send_criu_rpc_script(act, (char *)action, rpc_sk, fd);
}
int run_scripts(enum script_actions act)
{
int ret = 0;
const char *action = action_names[act];
pr_debug("Running %s scripts\n", action);
if (scripts_mode == SCRIPTS_NONE)
return 0;
if (scripts_mode == SCRIPTS_RPC) {
ret = rpc_send_fd(act, -1);
goto out;
}
if (scripts_mode == SCRIPTS_SHELL) {
ret = run_shell_scripts(action);
goto out;
}
BUG();
out:
if (ret)
pr_err("One of more action scripts failed\n");
return ret;
}
int add_script(char *path)
{
struct script *script;
BUG_ON(scripts_mode == SCRIPTS_RPC);
scripts_mode = SCRIPTS_SHELL;
script = xmalloc(sizeof(struct script));
if (script == NULL)
return -1;
script->path = xstrdup(path);
if (!script->path) {
xfree(script);
return -1;
}
list_add(&script->node, &scripts);
return 0;
}
int add_rpc_notify(int sk)
{
int fd;
fd = dup(sk);
if (fd < 0) {
pr_perror("dup() failed");
return -1;
}
BUG_ON(scripts_mode == SCRIPTS_SHELL);
scripts_mode = SCRIPTS_RPC;
if (install_service_fd(RPC_SK_OFF, fd) < 0)
return -1;
return 0;
}
|
