]>
Commit | Line | Data |
---|---|---|
5e97c3fc | 1 | /* |
2 | * lxc: linux Container library | |
3 | * | |
4 | * (C) Copyright IBM Corp. 2007, 2008 | |
5 | * | |
6 | * Authors: | |
9afe19d6 | 7 | * Daniel Lezcano <daniel.lezcano at free.fr> |
5e97c3fc | 8 | * |
9 | * This library is free software; you can redistribute it and/or | |
10 | * modify it under the terms of the GNU Lesser General Public | |
11 | * License as published by the Free Software Foundation; either | |
12 | * version 2.1 of the License, or (at your option) any later version. | |
13 | * | |
14 | * This library is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
17 | * Lesser General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU Lesser General Public | |
20 | * License along with this library; if not, write to the Free Software | |
250b1eec | 21 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
5e97c3fc | 22 | */ |
940ef906 CB |
23 | |
24 | #include <errno.h> | |
25 | #include <fcntl.h> | |
5e97c3fc | 26 | #include <stdio.h> |
12a50cc6 | 27 | #include <stdlib.h> |
0ad19a3f | 28 | #include <string.h> |
940ef906 | 29 | #include <time.h> |
5e97c3fc | 30 | #include <unistd.h> |
940ef906 | 31 | #include <sys/file.h> |
0ad19a3f | 32 | #include <sys/param.h> |
940ef906 | 33 | #include <sys/socket.h> |
0ad19a3f | 34 | #include <sys/stat.h> |
940ef906 | 35 | #include <sys/types.h> |
5e97c3fc | 36 | |
f2363e38 | 37 | #include "cgroup.h" |
e98fe68b | 38 | #include "commands.h" |
881450bb | 39 | #include "config.h" |
940ef906 CB |
40 | #include "log.h" |
41 | #include "lxc.h" | |
42 | #include "monitor.h" | |
43 | #include "start.h" | |
36eb9bde CLG |
44 | |
45 | lxc_log_define(lxc_state, lxc); | |
0ad19a3f | 46 | |
74a3920a | 47 | static const char * const strstate[] = { |
0ad19a3f | 48 | "STOPPED", "STARTING", "RUNNING", "STOPPING", |
fa082227 | 49 | "ABORTING", "FREEZING", "FROZEN", "THAWED", |
0ad19a3f | 50 | }; |
51 | ||
52 | const char *lxc_state2str(lxc_state_t state) | |
53 | { | |
54 | if (state < STOPPED || state > MAX_STATE - 1) | |
55 | return NULL; | |
56 | return strstate[state]; | |
57 | } | |
5e97c3fc | 58 | |
0ad19a3f | 59 | lxc_state_t lxc_str2state(const char *state) |
5e97c3fc | 60 | { |
e6a19d26 DE |
61 | size_t len; |
62 | lxc_state_t i; | |
0ad19a3f | 63 | len = sizeof(strstate)/sizeof(strstate[0]); |
64 | for (i = 0; i < len; i++) | |
65 | if (!strcmp(strstate[i], state)) | |
66 | return i; | |
3ab87b66 | 67 | |
439358bf | 68 | ERROR("invalid state '%s'", state); |
0ad19a3f | 69 | return -1; |
5e97c3fc | 70 | } |
71 | ||
13f5be62 | 72 | lxc_state_t lxc_getstate(const char *name, const char *lxcpath) |
0ad19a3f | 73 | { |
4fb3cba5 DE |
74 | extern lxc_state_t freezer_state(const char *name, const char *lxcpath); |
75 | ||
e6a19d26 | 76 | lxc_state_t state = freezer_state(name, lxcpath); |
0ad19a3f | 77 | if (state != FROZEN && state != FREEZING) |
ef6e34ee | 78 | state = lxc_cmd_get_state(name, lxcpath); |
0ad19a3f | 79 | return state; |
80 | } | |
e98fe68b | 81 | |
12a50cc6 | 82 | static int fillwaitedstates(const char *strstates, int *states) |
72d0e1cb SG |
83 | { |
84 | char *token, *saveptr = NULL; | |
12a50cc6 | 85 | char *strstates_dup = strdup(strstates); |
72d0e1cb SG |
86 | int state; |
87 | ||
12a50cc6 DE |
88 | if (!strstates_dup) |
89 | return -1; | |
90 | ||
91 | token = strtok_r(strstates_dup, "|", &saveptr); | |
72d0e1cb SG |
92 | while (token) { |
93 | ||
94 | state = lxc_str2state(token); | |
12a50cc6 DE |
95 | if (state < 0) { |
96 | free(strstates_dup); | |
72d0e1cb | 97 | return -1; |
12a50cc6 | 98 | } |
72d0e1cb SG |
99 | |
100 | states[state] = 1; | |
101 | ||
102 | token = strtok_r(NULL, "|", &saveptr); | |
103 | } | |
12a50cc6 | 104 | free(strstates_dup); |
72d0e1cb SG |
105 | return 0; |
106 | } | |
107 | ||
940ef906 CB |
108 | extern int lxc_wait(const char *lxcname, const char *states, int timeout, |
109 | const char *lxcpath) | |
72d0e1cb SG |
110 | { |
111 | struct lxc_msg msg; | |
112 | int state, ret; | |
940ef906 | 113 | int s[MAX_STATE] = {0}, fd; |
72d0e1cb SG |
114 | |
115 | if (fillwaitedstates(states, s)) | |
116 | return -1; | |
117 | ||
f485f377 DE |
118 | if (lxc_monitord_spawn(lxcpath)) |
119 | return -1; | |
120 | ||
9123e471 | 121 | fd = lxc_monitor_open(lxcpath); |
72d0e1cb SG |
122 | if (fd < 0) |
123 | return -1; | |
124 | ||
125 | /* | |
126 | * if container present, | |
127 | * then check if already in requested state | |
128 | */ | |
129 | ret = -1; | |
13f5be62 | 130 | state = lxc_getstate(lxcname, lxcpath); |
72d0e1cb SG |
131 | if (state < 0) { |
132 | goto out_close; | |
133 | } else if ((state >= 0) && (s[state])) { | |
134 | ret = 0; | |
135 | goto out_close; | |
136 | } | |
137 | ||
138 | for (;;) { | |
940ef906 CB |
139 | int64_t elapsed_time, curtime = 0; |
140 | struct timespec tspec; | |
72d0e1cb SG |
141 | int stop = 0; |
142 | int retval; | |
143 | ||
144 | if (timeout != -1) { | |
940ef906 | 145 | retval = clock_gettime(CLOCK_REALTIME, &tspec); |
72d0e1cb SG |
146 | if (retval) |
147 | goto out_close; | |
940ef906 | 148 | curtime = tspec.tv_sec; |
72d0e1cb | 149 | } |
0a9362f5 ÇO |
150 | if (lxc_monitor_read_timeout(fd, &msg, timeout) < 0) { |
151 | /* try again if select interrupted by signal */ | |
152 | if (errno != EINTR) | |
153 | goto out_close; | |
154 | } | |
72d0e1cb SG |
155 | |
156 | if (timeout != -1) { | |
940ef906 | 157 | retval = clock_gettime(CLOCK_REALTIME, &tspec); |
72d0e1cb SG |
158 | if (retval) |
159 | goto out_close; | |
940ef906 | 160 | elapsed_time = tspec.tv_sec - curtime; |
72d0e1cb SG |
161 | if (timeout - elapsed_time <= 0) |
162 | stop = 1; | |
163 | timeout -= elapsed_time; | |
164 | } | |
165 | ||
166 | if (strcmp(lxcname, msg.name)) { | |
167 | if (stop) { | |
168 | ret = -2; | |
169 | goto out_close; | |
170 | } | |
171 | continue; | |
172 | } | |
173 | ||
174 | switch (msg.type) { | |
175 | case lxc_msg_state: | |
940ef906 | 176 | if (msg.value < 0 || msg.value >= MAX_STATE) |
72d0e1cb | 177 | goto out_close; |
72d0e1cb SG |
178 | |
179 | if (s[msg.value]) { | |
180 | ret = 0; | |
181 | goto out_close; | |
182 | } | |
183 | break; | |
184 | default: | |
185 | if (stop) { | |
186 | ret = -2; | |
187 | goto out_close; | |
188 | } | |
189 | /* just ignore garbage */ | |
190 | break; | |
191 | } | |
192 | } | |
193 | ||
194 | out_close: | |
195 | lxc_monitor_close(fd); | |
196 | return ret; | |
197 | } |