]>
Commit | Line | Data |
---|---|---|
cc73685d CB |
1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
2 | ||
f1a4a029 ÇO |
3 | #ifndef __LXC_MONITOR_H |
4 | #define __LXC_MONITOR_H | |
0ad19a3f | 5 | |
1160ce89 CB |
6 | #include "config.h" |
7 | ||
f9870943 | 8 | #include <limits.h> |
d38dd64a | 9 | #include <poll.h> |
80f41298 | 10 | #include <sys/param.h> |
e51d4895 DE |
11 | #include <sys/un.h> |
12 | ||
85b035a1 CB |
13 | #include "compiler.h" |
14 | ||
eae6543d | 15 | typedef enum { |
16 | lxc_msg_state, | |
17 | lxc_msg_priority, | |
1787abca | 18 | lxc_msg_exit_code, |
eae6543d | 19 | } lxc_msg_type_t; |
20 | ||
21 | struct lxc_msg { | |
22 | lxc_msg_type_t type; | |
85b035a1 | 23 | char name[NAME_MAX + 1]; |
eae6543d | 24 | int value; |
25 | }; | |
26 | ||
85b035a1 CB |
27 | __hidden extern int lxc_monitor_sock_name(const char *lxcpath, struct sockaddr_un *addr); |
28 | __hidden extern int lxc_monitor_fifo_name(const char *lxcpath, char *fifo_path, size_t fifo_path_sz, | |
29 | int do_mkdirp); | |
30 | __hidden extern void lxc_monitor_send_state(const char *name, lxc_state_t state, const char *lxcpath); | |
31 | __hidden extern void lxc_monitor_send_exit_code(const char *name, int exit_code, const char *lxcpath); | |
32 | __hidden extern int lxc_monitord_spawn(const char *lxcpath); | |
0ad19a3f | 33 | |
2366b8a7 SH |
34 | /* |
35 | * Open the monitoring mechanism for a specific container | |
36 | * The function will return an fd corresponding to the events | |
37 | * Returns a file descriptor on success, < 0 otherwise | |
38 | */ | |
85b035a1 | 39 | __hidden extern int lxc_monitor_open(const char *lxcpath); |
2366b8a7 SH |
40 | |
41 | /* | |
42 | * Blocking read for the next container state change | |
43 | * @fd : the file descriptor provided by lxc_monitor_open | |
44 | * @msg : the variable which will be filled with the state | |
45 | * Returns 0 if the monitored container has exited, > 0 if | |
46 | * data was read, < 0 otherwise | |
47 | */ | |
85b035a1 | 48 | __hidden extern int lxc_monitor_read(int fd, struct lxc_msg *msg); |
2366b8a7 SH |
49 | |
50 | /* | |
51 | * Blocking read for the next container state change with timeout | |
52 | * @fd : the file descriptor provided by lxc_monitor_open | |
53 | * @msg : the variable which will be filled with the state | |
54 | * @timeout : the timeout in seconds to wait for a state change | |
55 | * Returns 0 if the monitored container has exited, > 0 if | |
56 | * data was read, < 0 otherwise | |
57 | */ | |
85b035a1 | 58 | __hidden extern int lxc_monitor_read_timeout(int fd, struct lxc_msg *msg, int timeout); |
2366b8a7 SH |
59 | |
60 | /* | |
61 | * Blocking read from multiple monitors for the next container state | |
62 | * change with timeout | |
13dff219 | 63 | * @fds : struct pollfd describing the fds to use |
2366b8a7 SH |
64 | * @nfds : the number of entries in fds |
65 | * @msg : the variable which will be filled with the state | |
66 | * @timeout : the timeout in seconds to wait for a state change | |
67 | * Returns 0 if the monitored container has exited, > 0 if | |
68 | * data was read, < 0 otherwise | |
69 | */ | |
85b035a1 CB |
70 | __hidden extern int lxc_monitor_read_fdset(struct pollfd *fds, nfds_t nfds, struct lxc_msg *msg, |
71 | int timeout); | |
2366b8a7 | 72 | |
85b035a1 | 73 | #endif /* __LXC_MONITOR_H */ |