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99258734 CB |
1 | /* liblxcapi |
2 | * | |
3 | * Copyright © 2019 Christian Brauner <christian.brauner@ubuntu.com>. | |
4 | * Copyright © 2019 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 | ||
e49c56d6 CB |
20 | #include "config.h" |
21 | ||
99258734 CB |
22 | #include <errno.h> |
23 | #include <fcntl.h> | |
24 | #include <lxc/lxccontainer.h> | |
25 | #include <signal.h> | |
26 | #include <stdio.h> | |
27 | #include <stdlib.h> | |
28 | #include <string.h> | |
29 | #include <sys/types.h> | |
30 | #include <sys/wait.h> | |
31 | #include <unistd.h> | |
32 | ||
33 | #include "lxctest.h" | |
34 | #include "utils.h" | |
35 | ||
36 | #define MYNAME "shortlived" | |
37 | ||
38 | static int destroy_container(void) | |
39 | { | |
40 | int status, ret; | |
41 | pid_t pid = fork(); | |
42 | ||
43 | if (pid < 0) { | |
44 | perror("fork"); | |
45 | return -1; | |
46 | } | |
47 | if (pid == 0) { | |
48 | execlp("lxc-destroy", "lxc-destroy", "-f", "-n", MYNAME, NULL); | |
49 | exit(EXIT_FAILURE); | |
50 | } | |
51 | again: | |
52 | ret = waitpid(pid, &status, 0); | |
53 | if (ret == -1) { | |
54 | if (errno == EINTR) | |
55 | goto again; | |
56 | perror("waitpid"); | |
57 | return -1; | |
58 | } | |
59 | if (ret != pid) | |
60 | goto again; | |
61 | if (!WIFEXITED(status)) { // did not exit normally | |
62 | fprintf(stderr, "%d: lxc-create exited abnormally\n", __LINE__); | |
63 | return -1; | |
64 | } | |
65 | return WEXITSTATUS(status); | |
66 | } | |
67 | ||
68 | static int create_container(void) | |
69 | { | |
70 | int status, ret; | |
71 | pid_t pid = fork(); | |
72 | ||
73 | if (pid < 0) { | |
74 | perror("fork"); | |
75 | return -1; | |
76 | } | |
77 | if (pid == 0) { | |
78 | execlp("lxc-create", "lxc-create", "-t", "busybox", "-n", MYNAME, NULL); | |
79 | exit(EXIT_FAILURE); | |
80 | } | |
81 | again: | |
82 | ret = waitpid(pid, &status, 0); | |
83 | if (ret == -1) { | |
84 | if (errno == EINTR) | |
85 | goto again; | |
86 | perror("waitpid"); | |
87 | return -1; | |
88 | } | |
89 | if (ret != pid) | |
90 | goto again; | |
91 | if (!WIFEXITED(status)) { // did not exit normally | |
92 | fprintf(stderr, "%d: lxc-create exited abnormally\n", __LINE__); | |
93 | return -1; | |
94 | } | |
95 | return WEXITSTATUS(status); | |
96 | } | |
97 | ||
98 | int main(int argc, char *argv[]) | |
99 | { | |
100 | int i; | |
101 | const char *s; | |
102 | bool b; | |
103 | struct lxc_container *c; | |
104 | int ret = EXIT_FAILURE; | |
105 | ||
106 | /* test a real container */ | |
107 | c = lxc_container_new(MYNAME, NULL); | |
108 | if (!c) { | |
109 | fprintf(stderr, "%d: error creating lxc_container %s\n", __LINE__, MYNAME); | |
110 | goto out; | |
111 | } | |
112 | ||
113 | if (c->is_defined(c)) { | |
114 | fprintf(stderr, "%d: %s thought it was defined\n", __LINE__, MYNAME); | |
115 | goto out; | |
116 | } | |
117 | ||
118 | if (create_container() < 0) { | |
119 | fprintf(stderr, "%d: failed to create a container\n", __LINE__); | |
120 | goto out; | |
121 | } | |
122 | ||
123 | b = c->is_defined(c); | |
124 | if (!b) { | |
125 | fprintf(stderr, "%d: %s thought it was not defined\n", __LINE__, MYNAME); | |
126 | goto out; | |
127 | } | |
128 | ||
129 | s = c->state(c); | |
130 | if (!s || strcmp(s, "STOPPED")) { | |
131 | fprintf(stderr, "%d: %s is in state %s, not in STOPPED.\n", __LINE__, c->name, s ? s : "undefined"); | |
132 | goto out; | |
133 | } | |
134 | ||
135 | b = c->load_config(c, NULL); | |
136 | if (!b) { | |
137 | fprintf(stderr, "%d: %s failed to read its config\n", __LINE__, c->name); | |
138 | goto out; | |
139 | } | |
140 | ||
141 | if (!c->set_config_item(c, "lxc.init.cmd", "echo hello")) { | |
142 | fprintf(stderr, "%d: failed setting lxc.init.cmd\n", __LINE__); | |
143 | goto out; | |
144 | } | |
145 | ||
146 | c->want_daemonize(c, true); | |
147 | ||
148 | if (setenv("LXC_MEMFD_REXEC", "1", 1)) { | |
149 | fprintf(stderr, "%d: failed to set LXC_MEMFD_REXEC evironment variable\n", __LINE__); | |
150 | goto out; | |
151 | } | |
152 | ||
153 | /* Test whether we can start a really short-lived daemonized container. */ | |
154 | for (i = 0; i < 10; i++) { | |
155 | if (!c->startl(c, 0, NULL)) { | |
156 | fprintf(stderr, "%d: %s failed to start on %dth iteration\n", __LINE__, c->name, i); | |
157 | goto out; | |
158 | } | |
159 | ||
160 | if (!c->wait(c, "STOPPED", 30)) { | |
161 | fprintf(stderr, "%d: %s failed to wait on %dth iteration\n", __LINE__, c->name, i); | |
162 | goto out; | |
163 | } | |
164 | } | |
165 | ||
166 | /* Test whether we can start a really short-lived daemonized container with lxc-init. */ | |
167 | for (i = 0; i < 10; i++) { | |
168 | if (!c->startl(c, 1, NULL)) { | |
169 | fprintf(stderr, "%d: %s failed to start on %dth iteration\n", __LINE__, c->name, i); | |
170 | goto out; | |
171 | } | |
172 | ||
173 | if (!c->wait(c, "STOPPED", 30)) { | |
174 | fprintf(stderr, "%d: %s failed to wait on %dth iteration\n", __LINE__, c->name, i); | |
175 | goto out; | |
176 | } | |
177 | } | |
178 | ||
179 | c->stop(c); | |
180 | ||
181 | fprintf(stderr, "all lxc_container tests passed for %s\n", c->name); | |
182 | ret = EXIT_SUCCESS; | |
183 | ||
184 | out: | |
185 | if (c) { | |
186 | c->stop(c); | |
187 | destroy_container(); | |
188 | } | |
189 | lxc_container_put(c); | |
190 | exit(ret); | |
191 | } |