blob: 40fa5dbd87dd5bb7c0da9b14b60b36f64b03a5f0 (
plain)
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
|
/*
* Copyright (C) 2016 Red Hat, Inc.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*/
#ifndef _LVM_LVMETAD_INTERNAL_H
#define _LVM_LVMETAD_INTERNAL_H
#define CMD_NAME_SIZE 32
typedef struct {
daemon_idle *idle;
log_state *log; /* convenience */
const char *log_config;
int enable_udev_monitor;
struct dm_hash_table *pvid_to_pvmeta;
struct dm_hash_table *device_to_pvid; /* shares locks with above */
struct dm_hash_table *vgid_to_metadata;
struct dm_hash_table *vgid_to_vgname;
struct dm_hash_table *vgid_to_outdated_pvs;
struct dm_hash_table *vgid_to_info;
struct dm_hash_table *vgname_to_vgid;
struct dm_hash_table *pvid_to_vgid;
char token[128];
char update_cmd[CMD_NAME_SIZE];
int update_pid;
int update_timeout;
uint64_t update_begin;
uint32_t flags; /* GLFL_ */
pthread_mutex_t token_lock;
pthread_mutex_t info_lock;
pthread_rwlock_t cache_lock;
int helper_pid;
int helper_pw_fd; /* parent write to send message to helper */
int helper_pr_fd; /* parent read to recv message from helper */
struct udev *udevh;
struct udev_monitor *udev_mon;
int udev_fd;
} lvmetad_state;
/*
* helper process
* recvs 512 byte helper_msg on in_fd
* sends 4 byte helper_status on out_fd
*/
/* max length of path and args, includes terminate \0 byte */
#define HELPER_PATH_LEN 128
#define HELPER_ARGS_LEN 128
#define HELPER_MSG_LEN 512
#define HELPER_MSG_RUNPATH 1
struct helper_msg {
uint8_t type;
uint8_t pad1;
uint16_t pad2;
uint32_t flags;
int pid;
int unused;
char path[HELPER_PATH_LEN]; /* 128 */
char args[HELPER_ARGS_LEN]; /* 128 */
char pad[240];
};
#define HELPER_STARTED 1
struct helper_status {
uint8_t type;
uint8_t status;
uint16_t len;
};
void close_helper(daemon_state *s);
void send_helper_request(daemon_state *s, request r);
int setup_helper(daemon_state *s);
void setup_udev_monitor(daemon_state *s);
#endif
|
