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3df9fa82 CB |
1 | /* liblxcapi |
2 | * | |
3 | * Copyright © 2017 Christian Brauner <christian.brauner@ubuntu.com>. | |
4 | * Copyright © 2017 Canonical Ltd. | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License version 2, as | |
8 | * published by the Free Software Foundation. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License along | |
16 | * with this program; if not, write to the Free Software Foundation, Inc., | |
17 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | */ | |
19 | #include <lxc/lxccontainer.h> | |
20 | ||
21 | #include <unistd.h> | |
22 | #include <signal.h> | |
23 | #include <stdio.h> | |
24 | #include <sys/types.h> | |
25 | #include <sys/wait.h> | |
26 | #include <stdlib.h> | |
27 | #include <string.h> | |
28 | #include <errno.h> | |
29 | #include <fcntl.h> | |
30 | ||
77f76f31 CB |
31 | #include "lxctest.h" |
32 | #include "utils.h" | |
33 | ||
18cd4b54 DJ |
34 | #ifndef HAVE_STRLCPY |
35 | #include "include/strlcpy.h" | |
36 | #endif | |
37 | ||
3df9fa82 CB |
38 | #define MYNAME "shortlived" |
39 | ||
40 | static int destroy_container(void) | |
41 | { | |
42 | int status, ret; | |
43 | pid_t pid = fork(); | |
44 | ||
45 | if (pid < 0) { | |
46 | perror("fork"); | |
47 | return -1; | |
48 | } | |
0ce5c91e | 49 | |
3df9fa82 | 50 | if (pid == 0) { |
258611dd CB |
51 | execlp("lxc-destroy", "lxc-destroy", "-f", "-n", MYNAME, NULL); |
52 | exit(EXIT_FAILURE); | |
3df9fa82 | 53 | } |
0ce5c91e | 54 | |
3df9fa82 CB |
55 | again: |
56 | ret = waitpid(pid, &status, 0); | |
57 | if (ret == -1) { | |
58 | if (errno == EINTR) | |
59 | goto again; | |
60 | perror("waitpid"); | |
61 | return -1; | |
62 | } | |
0ce5c91e | 63 | |
3df9fa82 CB |
64 | if (ret != pid) |
65 | goto again; | |
0ce5c91e | 66 | |
3df9fa82 CB |
67 | if (!WIFEXITED(status)) { // did not exit normally |
68 | fprintf(stderr, "%d: lxc-create exited abnormally\n", __LINE__); | |
69 | return -1; | |
70 | } | |
0ce5c91e | 71 | |
3df9fa82 CB |
72 | return WEXITSTATUS(status); |
73 | } | |
74 | ||
75 | static int create_container(void) | |
76 | { | |
77 | int status, ret; | |
78 | pid_t pid = fork(); | |
79 | ||
80 | if (pid < 0) { | |
81 | perror("fork"); | |
82 | return -1; | |
83 | } | |
0ce5c91e | 84 | |
3df9fa82 | 85 | if (pid == 0) { |
258611dd CB |
86 | execlp("lxc-create", "lxc-create", "-t", "busybox", "-n", MYNAME, NULL); |
87 | exit(EXIT_FAILURE); | |
3df9fa82 | 88 | } |
0ce5c91e | 89 | |
3df9fa82 CB |
90 | again: |
91 | ret = waitpid(pid, &status, 0); | |
92 | if (ret == -1) { | |
93 | if (errno == EINTR) | |
94 | goto again; | |
0ce5c91e | 95 | |
3df9fa82 CB |
96 | perror("waitpid"); |
97 | return -1; | |
98 | } | |
0ce5c91e | 99 | |
3df9fa82 CB |
100 | if (ret != pid) |
101 | goto again; | |
0ce5c91e | 102 | |
3df9fa82 CB |
103 | if (!WIFEXITED(status)) { // did not exit normally |
104 | fprintf(stderr, "%d: lxc-create exited abnormally\n", __LINE__); | |
105 | return -1; | |
106 | } | |
0ce5c91e | 107 | |
3df9fa82 CB |
108 | return WEXITSTATUS(status); |
109 | } | |
110 | ||
111 | int main(int argc, char *argv[]) | |
112 | { | |
5af9369b | 113 | int fd, i; |
3df9fa82 CB |
114 | const char *s; |
115 | bool b; | |
77f76f31 CB |
116 | struct lxc_container *c; |
117 | struct lxc_log log; | |
118 | char template[sizeof(P_tmpdir"/shortlived_XXXXXX")]; | |
5af9369b | 119 | int ret = EXIT_FAILURE; |
3df9fa82 | 120 | |
18cd4b54 DJ |
121 | (void)strlcpy(template, P_tmpdir"/shortlived_XXXXXX", sizeof(template)); |
122 | ||
77f76f31 CB |
123 | i = lxc_make_tmpfile(template, false); |
124 | if (i < 0) { | |
125 | lxc_error("Failed to create temporary log file for container %s\n", MYNAME); | |
126 | exit(EXIT_FAILURE); | |
127 | } else { | |
128 | lxc_debug("Using \"%s\" as temporary log file for container %s\n", template, MYNAME); | |
129 | close(i); | |
130 | } | |
131 | ||
132 | log.name = MYNAME; | |
133 | log.file = template; | |
134 | log.level = "TRACE"; | |
135 | log.prefix = "shortlived"; | |
136 | log.quiet = false; | |
137 | log.lxcpath = NULL; | |
0ce5c91e | 138 | |
77f76f31 CB |
139 | if (lxc_log_init(&log)) |
140 | exit(EXIT_FAILURE); | |
141 | ||
3df9fa82 CB |
142 | /* test a real container */ |
143 | c = lxc_container_new(MYNAME, NULL); | |
144 | if (!c) { | |
145 | fprintf(stderr, "%d: error creating lxc_container %s\n", __LINE__, MYNAME); | |
3df9fa82 CB |
146 | goto out; |
147 | } | |
148 | ||
149 | if (c->is_defined(c)) { | |
150 | fprintf(stderr, "%d: %s thought it was defined\n", __LINE__, MYNAME); | |
151 | goto out; | |
152 | } | |
153 | ||
5af9369b | 154 | if (create_container() < 0) { |
3df9fa82 CB |
155 | fprintf(stderr, "%d: failed to create a container\n", __LINE__); |
156 | goto out; | |
157 | } | |
158 | ||
159 | b = c->is_defined(c); | |
160 | if (!b) { | |
161 | fprintf(stderr, "%d: %s thought it was not defined\n", __LINE__, MYNAME); | |
162 | goto out; | |
163 | } | |
164 | ||
165 | s = c->state(c); | |
166 | if (!s || strcmp(s, "STOPPED")) { | |
167 | fprintf(stderr, "%d: %s is in state %s, not in STOPPED.\n", __LINE__, c->name, s ? s : "undefined"); | |
168 | goto out; | |
169 | } | |
170 | ||
171 | b = c->load_config(c, NULL); | |
172 | if (!b) { | |
173 | fprintf(stderr, "%d: %s failed to read its config\n", __LINE__, c->name); | |
174 | goto out; | |
175 | } | |
176 | ||
177 | if (!c->set_config_item(c, "lxc.init.cmd", "echo hello")) { | |
178 | fprintf(stderr, "%d: failed setting lxc.init.cmd\n", __LINE__); | |
179 | goto out; | |
180 | } | |
181 | ||
77f76f31 | 182 | if (!c->set_config_item(c, "lxc.execute.cmd", "echo hello")) { |
5af9369b | 183 | fprintf(stderr, "%d: failed setting lxc.execute.cmd\n", __LINE__); |
77f76f31 CB |
184 | goto out; |
185 | } | |
186 | ||
3df9fa82 CB |
187 | c->want_daemonize(c, true); |
188 | ||
77f76f31 | 189 | /* Test whether we can start a really short-lived daemonized container. */ |
3df9fa82 CB |
190 | for (i = 0; i < 10; i++) { |
191 | if (!c->startl(c, 0, NULL)) { | |
77f76f31 CB |
192 | fprintf(stderr, "%d: %s failed to start on %dth iteration\n", __LINE__, c->name, i); |
193 | goto out; | |
194 | } | |
195 | ||
77f76f31 CB |
196 | if (!c->wait(c, "STOPPED", 30)) { |
197 | fprintf(stderr, "%d: %s failed to wait on %dth iteration\n", __LINE__, c->name, i); | |
198 | goto out; | |
199 | } | |
200 | } | |
201 | ||
202 | /* Test whether we can start a really short-lived daemonized container with lxc-init. */ | |
203 | for (i = 0; i < 10; i++) { | |
204 | if (!c->startl(c, 1, NULL)) { | |
205 | fprintf(stderr, "%d: %s failed to start on %dth iteration\n", __LINE__, c->name, i); | |
206 | goto out; | |
207 | } | |
208 | ||
77f76f31 CB |
209 | if (!c->wait(c, "STOPPED", 30)) { |
210 | fprintf(stderr, "%d: %s failed to wait on %dth iteration\n", __LINE__, c->name, i); | |
3df9fa82 CB |
211 | goto out; |
212 | } | |
3df9fa82 CB |
213 | } |
214 | ||
215 | if (!c->set_config_item(c, "lxc.init.cmd", "you-shall-fail")) { | |
216 | fprintf(stderr, "%d: failed setting lxc.init.cmd\n", __LINE__); | |
217 | goto out; | |
218 | } | |
219 | ||
77f76f31 CB |
220 | if (!c->set_config_item(c, "lxc.execute.cmd", "you-shall-fail")) { |
221 | fprintf(stderr, "%d: failed setting lxc.init.cmd\n", __LINE__); | |
222 | goto out; | |
223 | } | |
224 | ||
225 | /* Test whether we can start a really short-lived daemonized container. */ | |
3df9fa82 CB |
226 | for (i = 0; i < 10; i++) { |
227 | if (c->startl(c, 0, NULL)) { | |
77f76f31 CB |
228 | fprintf(stderr, "%d: %s failed to start on %dth iteration\n", __LINE__, c->name, i); |
229 | goto out; | |
230 | } | |
231 | ||
77f76f31 CB |
232 | if (!c->wait(c, "STOPPED", 30)) { |
233 | fprintf(stderr, "%d: %s failed to wait on %dth iteration\n", __LINE__, c->name, i); | |
234 | goto out; | |
235 | } | |
236 | } | |
237 | ||
238 | /* Test whether we can start a really short-lived daemonized container with lxc-init. */ | |
239 | for (i = 0; i < 10; i++) { | |
240 | /* An container started with lxc-init will always start | |
59d8d30d | 241 | * successfully unless lxc-init has a bug. |
77f76f31 CB |
242 | */ |
243 | if (!c->startl(c, 1, NULL)) { | |
244 | fprintf(stderr, "%d: %s failed to start on %dth iteration\n", __LINE__, c->name, i); | |
245 | goto out; | |
246 | } | |
247 | ||
77f76f31 CB |
248 | if (!c->wait(c, "STOPPED", 30)) { |
249 | fprintf(stderr, "%d: %s failed to wait on %dth iteration\n", __LINE__, c->name, i); | |
3df9fa82 CB |
250 | goto out; |
251 | } | |
3df9fa82 CB |
252 | } |
253 | ||
254 | c->stop(c); | |
255 | ||
256 | fprintf(stderr, "all lxc_container tests passed for %s\n", c->name); | |
257 | ret = 0; | |
258 | ||
259 | out: | |
260 | if (c) { | |
261 | c->stop(c); | |
262 | destroy_container(); | |
263 | } | |
264 | lxc_container_put(c); | |
5af9369b CB |
265 | |
266 | if (ret != 0) { | |
267 | fd = open(template, O_RDONLY); | |
268 | if (fd >= 0) { | |
269 | char buf[4096]; | |
270 | ssize_t buflen; | |
0ce5c91e | 271 | |
5af9369b CB |
272 | while ((buflen = read(fd, buf, 1024)) > 0) { |
273 | buflen = write(STDERR_FILENO, buf, buflen); | |
274 | if (buflen <= 0) | |
275 | break; | |
276 | } | |
0ce5c91e | 277 | |
5af9369b CB |
278 | close(fd); |
279 | } | |
280 | } | |
281 | ||
77f76f31 | 282 | unlink(template); |
3df9fa82 CB |
283 | exit(ret); |
284 | } |