get_item.c revision 03fadd1656ce2bf994fc30617c5bb795803e0fde
5c4c13ac875d79def115ce3d8443d4ec87b3252aJulian Kornberger/* liblxcapi
5c4c13ac875d79def115ce3d8443d4ec87b3252aJulian Kornberger *
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa * Copyright © 2012 Serge Hallyn <serge.hallyn@ubuntu.com>.
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa * Copyright © 2012 Canonical Ltd.
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa *
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa * This program is free software; you can redistribute it and/or modify
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa * it under the terms of the GNU General Public License version 2, as
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa * published by the Free Software Foundation.
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa *
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa * This program is distributed in the hope that it will be useful,
5c4c13ac875d79def115ce3d8443d4ec87b3252aJulian Kornberger * but WITHOUT ANY WARRANTY; without even the implied warranty of
5c4c13ac875d79def115ce3d8443d4ec87b3252aJulian Kornberger * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5c4c13ac875d79def115ce3d8443d4ec87b3252aJulian Kornberger * GNU General Public License for more details.
5c4c13ac875d79def115ce3d8443d4ec87b3252aJulian Kornberger *
5c4c13ac875d79def115ce3d8443d4ec87b3252aJulian Kornberger * You should have received a copy of the GNU General Public License along
5c4c13ac875d79def115ce3d8443d4ec87b3252aJulian Kornberger * with this program; if not, write to the Free Software Foundation, Inc.,
5c4c13ac875d79def115ce3d8443d4ec87b3252aJulian Kornberger * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
5c4c13ac875d79def115ce3d8443d4ec87b3252aJulian Kornberger */
5c4c13ac875d79def115ce3d8443d4ec87b3252aJulian Kornberger#include <lxc/lxccontainer.h>
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa#include <unistd.h>
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa#include <signal.h>
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa#include <stdio.h>
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa#include <sys/types.h>
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa#include <sys/wait.h>
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa#include <stdlib.h>
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa#include <errno.h>
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa#include <string.h>
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa#include "lxc/state.h"
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa#define MYNAME "lxctest1"
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksaint main(int argc, char *argv[])
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa{
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa struct lxc_container *c;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa int ret;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa char v1[2], v2[256], v3[2048];
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa if ((c = lxc_container_new("testxyz", NULL)) == NULL) {
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "%d: error opening lxc_container %s\n", __LINE__, MYNAME);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = 1;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa goto out;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa }
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa if (!c->set_config_item(c, "lxc.hook.pre-start", "hi there")) {
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "%d: failed to set hook.pre-start\n", __LINE__);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = 1;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa goto out;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa }
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = c->get_config_item(c, "lxc.hook.pre-start", v2, 255);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa if (ret < 0) {
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "%d: get_config_item(lxc.hook.pre-start) returned %d\n", __LINE__, ret);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = 1;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa goto out;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa }
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "lxc.hook.pre-start returned %d %s\n", ret, v2);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = c->get_config_item(c, "lxc.network", v2, 255);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa if (ret < 0) {
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "%d: get_config_item returned %d\n", __LINE__, ret);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = 1;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa goto out;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa }
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "%d: get_config_item(lxc.network) returned %d %s\n", __LINE__, ret, v2);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa if (!c->set_config_item(c, "lxc.tty", "4")) {
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "%d: failed to set tty\n", __LINE__);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = 1;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa goto out;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa }
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = c->get_config_item(c, "lxc.tty", v2, 255);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa if (ret < 0) {
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "%d: get_config_item(lxc.tty) returned %d\n", __LINE__, ret);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = 1;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa goto out;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa }
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "lxc.tty returned %d %s\n", ret, v2);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa if (!c->set_config_item(c, "lxc.arch", "x86")) {
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "%d: failed to set arch\n", __LINE__);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = 1;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa goto out;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa }
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = c->get_config_item(c, "lxc.arch", v2, 255);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa if (ret < 0) {
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "%d: get_config_item(lxc.arch) returned %d\n", __LINE__, ret);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = 1;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa goto out;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa }
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa printf("lxc.arch returned %d %s\n", ret, v2);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa#define HNAME "hostname1"
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa // demonstrate proper usage:
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa char *alloced;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa if (!c->set_config_item(c, "lxc.utsname", HNAME)) {
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "%d: failed to set utsname\n", __LINE__);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = 1;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa goto out;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa }
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa int len;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa len = c->get_config_item(c, "lxc.utsname", NULL, 0); // query the size of the string
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa if (len < 0) {
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "%d: get_config_item(lxc.utsname) returned %d\n", __LINE__, len);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = 1;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa goto out;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa }
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa printf("lxc.utsname returned %d\n", len);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa // allocate the length of string + 1 for trailing \0
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa alloced = malloc(len+1);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa if (!alloced) {
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "%d: failed to allocate %d bytes for utsname\n", __LINE__, len);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = 1;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa goto out;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa }
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa // now pass in the malloc'd array, and pass in length of string + 1: again
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa // because we need room for the trailing \0
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = c->get_config_item(c, "lxc.utsname", alloced, len+1);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa if (ret < 0) {
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa fprintf(stderr, "%d: get_config_item(lxc.utsname) returned %d\n", __LINE__, ret);
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa ret = 1;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa goto out;
a2b3d5bb602a9a0d970b6640948f1d7d75ce78bfEugen Kuksa }
if (strcmp(alloced, HNAME) != 0 || ret != len) {
fprintf(stderr, "lxc.utsname returned wrong value: %d %s not %d %s\n", ret, alloced, len, HNAME);
ret = 1;
goto out;
}
printf("lxc.utsname returned %d %s\n", len, alloced);
free(alloced);
if (!c->set_config_item(c, "lxc.mount.entry", "hi there")) {
fprintf(stderr, "%d: failed to set mount.entry\n", __LINE__);
ret = 1;
goto out;
}
ret = c->get_config_item(c, "lxc.mount.entry", v2, 255);
if (ret < 0) {
fprintf(stderr, "%d: get_config_item(lxc.mount.entry) returned %d\n", __LINE__, ret);
ret = 1;
goto out;
}
printf("lxc.mount.entry returned %d %s\n", ret, v2);
if (!c->set_config_item(c, "lxc.aa_profile", "unconfined")) {
fprintf(stderr, "%d: failed to set aa_profile\n", __LINE__);
ret = 1;
goto out;
}
ret = c->get_config_item(c, "lxc.aa_profile", v2, 255);
if (ret < 0) {
fprintf(stderr, "%d: get_config_item(lxc.aa_profile) returned %d\n", __LINE__, ret);
ret = 1;
goto out;
}
printf("lxc.aa_profile returned %d %s\n", ret, v2);
lxc_container_put(c);
// new test with real container
if ((c = lxc_container_new(MYNAME, NULL)) == NULL) {
fprintf(stderr, "%d: error opening lxc_container %s\n", __LINE__, MYNAME);
ret = 1;
goto out;
}
c->destroy(c);
lxc_container_put(c);
if ((c = lxc_container_new(MYNAME, NULL)) == NULL) {
fprintf(stderr, "%d: error opening lxc_container %s\n", __LINE__, MYNAME);
ret = 1;
goto out;
}
if (!c->createl(c, "ubuntu", NULL, NULL, 0, "-r", "trusty", NULL)) {
fprintf(stderr, "%d: failed to create a trusty container\n", __LINE__);
ret = 1;
goto out;
}
lxc_container_put(c);
/* XXX TODO load_config needs to clear out any old config first */
if ((c = lxc_container_new(MYNAME, NULL)) == NULL) {
fprintf(stderr, "%d: error opening lxc_container %s\n", __LINE__, MYNAME);
ret = 1;
goto out;
}
ret = c->get_config_item(c, "lxc.cap.drop", NULL, 300);
if (ret < 5 || ret > 255) {
fprintf(stderr, "%d: get_config_item(lxc.cap.drop) with NULL returned %d\n", __LINE__, ret);
ret = 1;
goto out;
}
ret = c->get_config_item(c, "lxc.cap.drop", v1, 1);
if (ret < 5 || ret > 255) {
fprintf(stderr, "%d: get_config_item(lxc.cap.drop) returned %d\n", __LINE__, ret);
ret = 1;
goto out;
}
ret = c->get_config_item(c, "lxc.cap.drop", v2, 255);
if (ret < 0) {
fprintf(stderr, "%d: get_config_item(lxc.cap.drop) returned %d %s\n", __LINE__, ret, v2);
ret = 1;
goto out;
}
printf("%d: get_config_item(lxc.cap.drop) returned %d %s\n", __LINE__, ret, v2);
ret = c->get_config_item(c, "lxc.network", v2, 255);
if (ret < 0) {
fprintf(stderr, "%d: get_config_item returned %d\n", __LINE__, ret);
ret = 1;
goto out;
}
printf("%d: get_config_item(lxc.network) returned %d %s\n", __LINE__, ret, v2);
if (!c->set_config_item(c, "lxc.network.ipv4", "10.2.3.4")) {
fprintf(stderr, "%d: failed to set ipv4\n", __LINE__);
ret = 1;
goto out;
}
ret = c->get_config_item(c, "lxc.network.0.ipv4", v2, 255);
if (ret <= 0) {
fprintf(stderr, "%d: lxc.network.0.ipv4 returned %d\n", __LINE__, ret);
ret = 1;
goto out;
}
if (!c->clear_config_item(c, "lxc.network.0.ipv4")) {
fprintf(stderr, "%d: failed clearing all ipv4 entries\n", __LINE__);
ret = 1;
goto out;
}
ret = c->get_config_item(c, "lxc.network.0.ipv4", v2, 255);
if (ret != 0) {
fprintf(stderr, "%d: after clearing ipv4 entries get_item(lxc.network.0.ipv4 returned %d\n", __LINE__, ret);
ret = 1;
goto out;
}
ret = c->get_config_item(c, "lxc.network.0.link", v2, 255);
if (ret < 0) {
fprintf(stderr, "%d: get_config_item returned %d\n", __LINE__, ret);
ret = 1;
goto out;
}
printf("%d: get_config_item (link) returned %d %s\n", __LINE__, ret, v2);
ret = c->get_config_item(c, "lxc.network.0.name", v2, 255);
if (ret < 0) {
fprintf(stderr, "%d: get_config_item returned %d\n", __LINE__, ret);
ret = 1;
goto out;
}
printf("%d: get_config_item (name) returned %d %s\n", __LINE__, ret, v2);
if (!c->clear_config_item(c, "lxc.network")) {
fprintf(stderr, "%d: clear_config_item failed\n", __LINE__);
ret = 1;
goto out;
}
ret = c->get_config_item(c, "lxc.network", v2, 255);
if (ret != 0) {
fprintf(stderr, "%d: network was not actually cleared (get_network returned %d)\n", __LINE__, ret);
ret = 1;
goto out;
}
ret = c->get_config_item(c, "lxc.cgroup", v3, 2047);
if (ret < 0) {
fprintf(stderr, "%d: get_config_item(cgroup.devices) returned %d\n", __LINE__, ret);
ret = 1;
goto out;
}
printf("%d: get_config_item (cgroup.devices) returned %d %s\n", __LINE__, ret, v3);
ret = c->get_config_item(c, "lxc.cgroup.devices.allow", v3, 2047);
if (ret < 0) {
fprintf(stderr, "%d: get_config_item(cgroup.devices.devices.allow) returned %d\n", __LINE__, ret);
ret = 1;
goto out;
}
printf("%d: get_config_item (cgroup.devices.devices.allow) returned %d %s\n", __LINE__, ret, v3);
if (!c->clear_config_item(c, "lxc.cgroup")) {
fprintf(stderr, "%d: failed clearing lxc.cgroup\n", __LINE__);
ret = 1;
goto out;
}
if (!c->clear_config_item(c, "lxc.cap.drop")) {
fprintf(stderr, "%d: failed clearing lxc.cap.drop\n", __LINE__);
ret = 1;
goto out;
}
if (!c->clear_config_item(c, "lxc.mount.entries")) {
fprintf(stderr, "%d: failed clearing lxc.mount.entries\n", __LINE__);
ret = 1;
goto out;
}
if (!c->clear_config_item(c, "lxc.hook")) {
fprintf(stderr, "%d: failed clearing lxc.hook\n", __LINE__);
ret = 1;
goto out;
}
c->destroy(c);
printf("All get_item tests passed\n");
ret = 0;
out:
lxc_container_put(c);
exit(ret);
};