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python3-lxc/lxc.c
Christian Brauner 8c49ddee6f initial commit 
Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
2018-02-14 18:34:35 +01:00

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/*
* python-lxc: Python bindings for LXC
*
* (C) Copyright Canonical Ltd. 2012-2013
*
* Authors:
* Stéphane Graber <stgraber@ubuntu.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
* USA
*/
#include <Python.h>
#include "structmember.h"
#include <lxc/lxccontainer.h>
#include <stdio.h>
#include <sys/wait.h>
#include <sched.h>
/*
* CLONE_* definitions copied from lxc/namespace.h
*/
#ifndef CLONE_FS
# define CLONE_FS 0x00000200
#endif
#ifndef CLONE_NEWNS
# define CLONE_NEWNS 0x00020000
#endif
#ifndef CLONE_NEWCGROUP
# define CLONE_NEWCGROUP 0x02000000
#endif
#ifndef CLONE_NEWUTS
# define CLONE_NEWUTS 0x04000000
#endif
#ifndef CLONE_NEWIPC
# define CLONE_NEWIPC 0x08000000
#endif
#ifndef CLONE_NEWUSER
# define CLONE_NEWUSER 0x10000000
#endif
#ifndef CLONE_NEWPID
# define CLONE_NEWPID 0x20000000
#endif
#ifndef CLONE_NEWNET
# define CLONE_NEWNET 0x40000000
#endif
/* From sys/personality.h */
#define PER_LINUX 0x0000
#define PER_LINUX32 0x0008
/* Helper functions */
/* Copied from lxc/utils.c */
static int lxc_wait_for_pid_status(pid_t pid)
{
int status, ret;
again:
ret = waitpid(pid, &status, 0);
if (ret == -1) {
if (errno == EINTR)
goto again;
return -1;
}
if (ret != pid)
goto again;
return status;
}
/* Copied from lxc/confile.c, with HAVE_SYS_PERSONALITY_H check removed */
signed long lxc_config_parse_arch(const char *arch)
{
struct per_name {
char *name;
unsigned long per;
} pername[] = {
{ "x86", PER_LINUX32 },
{ "linux32", PER_LINUX32 },
{ "i386", PER_LINUX32 },
{ "i486", PER_LINUX32 },
{ "i586", PER_LINUX32 },
{ "i686", PER_LINUX32 },
{ "athlon", PER_LINUX32 },
{ "linux64", PER_LINUX },
{ "x86_64", PER_LINUX },
{ "amd64", PER_LINUX },
};
size_t len = sizeof(pername) / sizeof(pername[0]);
size_t i;
for (i = 0; i < len; i++) {
if (!strcmp(pername[i].name, arch))
return pername[i].per;
}
return -1;
}
char**
convert_tuple_to_char_pointer_array(PyObject *argv) {
int argc;
int i, j;
char **result;
/* not a list or tuple */
if (!PyList_Check(argv) && !PyTuple_Check(argv)) {
PyErr_SetString(PyExc_TypeError, "Expected list or tuple.");
return NULL;
}
argc = PySequence_Fast_GET_SIZE(argv);
result = (char**) calloc(argc + 1, sizeof(char*));
if (result == NULL) {
PyErr_SetNone(PyExc_MemoryError);
return NULL;
}
for (i = 0; i < argc; i++) {
char *str = NULL;
PyObject *pystr = NULL;
PyObject *pyobj = PySequence_Fast_GET_ITEM(argv, i);
assert(pyobj != NULL);
if (!PyUnicode_Check(pyobj)) {
PyErr_SetString(PyExc_ValueError, "Expected a string");
goto error;
}
pystr = PyUnicode_AsUTF8String(pyobj);
if (!pystr) {
/* Maybe it wasn't UTF-8 encoded. An exception is already set. */
goto error;
}
str = PyBytes_AsString(pystr);
if (!str) {
/* Maybe pystr wasn't a valid object. An exception is already set.
*/
Py_DECREF(pystr);
goto error;
}
/* We must make a copy of str, because it points into internal memory
* which we do not own. Assume it's NULL terminated, otherwise we'd
* have to use PyUnicode_AsUTF8AndSize() and be explicit about copying
* the memory.
*/
result[i] = strdup(str);
/* Do not decref pyobj since we stole a reference by using
* PyTuple_GET_ITEM().
*/
Py_DECREF(pystr);
if (result[i] == NULL) {
PyErr_SetNone(PyExc_MemoryError);
goto error;
}
}
result[argc] = NULL;
return result;
error:
/* We can only iterate up to but not including i because malloc() does not
* initialize its memory. Thus if we got here, i points to the index
* after the last strdup'd entry in result.
*/
for (j = 0; j < i; j++)
free(result[j]);
free(result);
return NULL;
}
struct lxc_attach_python_payload {
PyObject *fn;
PyObject *arg;
};
static int lxc_attach_python_exec(void* _payload)
{
/* This function is the first one to be called after attaching to a
* container. As lxc_attach() calls fork() PyOS_AfterFork should be called
* in the new process if the Python interpreter will continue to be used.
*/
PyOS_AfterFork();
struct lxc_attach_python_payload *payload =
(struct lxc_attach_python_payload *)_payload;
PyObject *result = PyObject_CallFunctionObjArgs(payload->fn,
payload->arg, NULL);
if (!result) {
PyErr_Print();
return -1;
}
if (PyLong_Check(result))
return (int)PyLong_AsLong(result);
else
return -1;
}
static void lxc_attach_free_options(lxc_attach_options_t *options);
static lxc_attach_options_t *lxc_attach_parse_options(PyObject *kwds)
{
static char *kwlist[] = {"attach_flags", "namespaces", "personality",
"initial_cwd", "uid", "gid", "env_policy",
"extra_env_vars", "extra_keep_env", "stdin",
"stdout", "stderr", NULL};
long temp_uid, temp_gid;
int temp_env_policy;
PyObject *extra_env_vars_obj = NULL;
PyObject *extra_keep_env_obj = NULL;
PyObject *stdin_obj = NULL;
PyObject *stdout_obj = NULL;
PyObject *stderr_obj = NULL;
PyObject *initial_cwd_obj = NULL;
PyObject *dummy = NULL;
bool parse_result;
lxc_attach_options_t default_options = LXC_ATTACH_OPTIONS_DEFAULT;
lxc_attach_options_t *options = malloc(sizeof(*options));
if (!options) {
PyErr_SetNone(PyExc_MemoryError);
return NULL;
}
memcpy(options, &default_options, sizeof(*options));
/* we need some dummy variables because we can't be sure
* the data types match completely */
temp_uid = -1;
temp_gid = -1;
temp_env_policy = options->env_policy;
/* we need a dummy tuple */
dummy = PyTuple_New(0);
parse_result = PyArg_ParseTupleAndKeywords(dummy, kwds, "|iilO&lliOOOOO",
kwlist, &options->attach_flags,
&options->namespaces,
&options->personality,
PyUnicode_FSConverter,
&initial_cwd_obj, &temp_uid,
&temp_gid, &temp_env_policy,
&extra_env_vars_obj,
&extra_keep_env_obj,
&stdin_obj, &stdout_obj,
&stderr_obj);
/* immediately get rid of the dummy tuple */
Py_DECREF(dummy);
if (!parse_result) {
lxc_attach_free_options(options);
return NULL;
}
/* duplicate the string, so we don't depend on some random Python object */
if (initial_cwd_obj != NULL) {
options->initial_cwd = strndup(PyBytes_AsString(initial_cwd_obj),
PyBytes_Size(initial_cwd_obj));
Py_DECREF(initial_cwd_obj);
}
/* do the type conversion from the types that match the parse string */
if (temp_uid != -1) options->uid = (uid_t)temp_uid;
if (temp_gid != -1) options->gid = (gid_t)temp_gid;
options->env_policy = (lxc_attach_env_policy_t)temp_env_policy;
if (extra_env_vars_obj)
options->extra_env_vars =
convert_tuple_to_char_pointer_array(extra_env_vars_obj);
if (extra_keep_env_obj)
options->extra_keep_env =
convert_tuple_to_char_pointer_array(extra_keep_env_obj);
if (stdin_obj) {
options->stdin_fd = PyObject_AsFileDescriptor(stdin_obj);
if (options->stdin_fd < 0) {
lxc_attach_free_options(options);
return NULL;
}
}
if (stdout_obj) {
options->stdout_fd = PyObject_AsFileDescriptor(stdout_obj);
if (options->stdout_fd < 0) {
lxc_attach_free_options(options);
return NULL;
}
}
if (stderr_obj) {
options->stderr_fd = PyObject_AsFileDescriptor(stderr_obj);
if (options->stderr_fd < 0) {
lxc_attach_free_options(options);
return NULL;
}
}
return options;
}
void lxc_attach_free_options(lxc_attach_options_t *options)
{
int i;
if (!options)
return;
free(options->initial_cwd);
if (options->extra_env_vars) {
for (i = 0; options->extra_env_vars[i]; i++)
free(options->extra_env_vars[i]);
free(options->extra_env_vars);
}
if (options->extra_keep_env) {
for (i = 0; options->extra_keep_env[i]; i++)
free(options->extra_keep_env[i]);
free(options->extra_keep_env);
}
free(options);
}
/* Module functions */
static PyObject *
LXC_arch_to_personality(PyObject *self, PyObject *arg)
{
long rv = -1;
PyObject *pystr = NULL;
char *str;
if (!PyUnicode_Check(arg)) {
PyErr_SetString(PyExc_ValueError, "Expected a string");
return NULL;
}
pystr = PyUnicode_AsUTF8String(arg);
if (!pystr)
return NULL;
str = PyBytes_AsString(pystr);
if (!str)
goto out;
rv = lxc_config_parse_arch(str);
if (rv == -1)
PyErr_SetString(PyExc_KeyError, "Failed to lookup architecture.");
out:
Py_DECREF(pystr);
return rv == -1 ? NULL : PyLong_FromLong(rv);
}
static PyObject *
LXC_attach_run_command(PyObject *self, PyObject *arg)
{
PyObject *args_obj = NULL;
int i, rv;
lxc_attach_command_t cmd = {
NULL, /* program */
NULL /* argv[] */
};
if (!PyArg_ParseTuple(arg, "sO", (const char**)&cmd.program, &args_obj))
return NULL;
if (args_obj && PyList_Check(args_obj)) {
cmd.argv = convert_tuple_to_char_pointer_array(args_obj);
} else {
PyErr_Format(PyExc_TypeError, "Second part of tuple passed to "
"attach_run_command must be a list.");
return NULL;
}
if (!cmd.argv)
return NULL;
rv = lxc_attach_run_command(&cmd);
for (i = 0; cmd.argv[i]; i++)
free(cmd.argv[i]);
free(cmd.argv);
return PyLong_FromLong(rv);
}
static PyObject *
LXC_attach_run_shell(PyObject *self, PyObject *arg)
{
int rv;
rv = lxc_attach_run_shell(NULL);
return PyLong_FromLong(rv);
}
static PyObject *
LXC_get_global_config_item(PyObject *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"key", NULL};
char* key = NULL;
const char* value = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "s|", kwlist,
&key))
return NULL;
value = lxc_get_global_config_item(key);
if (!value) {
PyErr_SetString(PyExc_KeyError, "Invalid configuration key");
return NULL;
}
return PyUnicode_FromString(value);
}
static PyObject *
LXC_get_version(PyObject *self, PyObject *args)
{
const char *rv = NULL;
rv = lxc_get_version();
if (!rv) {
return PyUnicode_FromString("");
}
return PyUnicode_FromString(rv);
}
static PyObject *
LXC_list_containers(PyObject *self, PyObject *args, PyObject *kwds)
{
char **names = NULL;
PyObject *list = NULL;
int list_count = 0;
int list_active = 1;
int list_defined = 1;
PyObject *py_list_active = NULL;
PyObject *py_list_defined = NULL;
char* config_path = NULL;
int i = 0;
PyObject *vargs = NULL;
static char *kwlist[] = {"active", "defined", "config_path", NULL};
if (! PyArg_ParseTupleAndKeywords(args, kwds, "|OOs", kwlist,
&py_list_active,
&py_list_defined,
&config_path, &vargs))
return NULL;
/* We default to listing everything */
if (py_list_active && py_list_active != Py_True) {
list_active = 0;
}
if (py_list_defined && py_list_defined != Py_True) {
list_defined = 0;
}
/* Call the right API function based on filters */
if (list_active == 1 && list_defined == 1)
list_count = list_all_containers(config_path, &names, NULL);
else if (list_active == 1)
list_count = list_active_containers(config_path, &names, NULL);
else if (list_defined == 1)
list_count = list_defined_containers(config_path, &names, NULL);
/* Handle failure */
if (list_count < 0) {
PyErr_SetString(PyExc_ValueError, "failure to list containers");
return NULL;
}
/* Generate the tuple */
list = PyTuple_New(list_count);
for (i = 0; i < list_count; i++) {
if (!names[i]) {
continue;
}
PyTuple_SET_ITEM(list, i, PyUnicode_FromString(names[i]));
free(names[i]);
}
free(names);
return list;
}
/* Base type and functions for Container */
typedef struct {
PyObject_HEAD
struct lxc_container *container;
} Container;
static void
Container_dealloc(Container* self)
{
lxc_container_put(self->container);
Py_TYPE(self)->tp_free((PyObject*)self);
}
static int
Container_init(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"name", "config_path", NULL};
char *name = NULL;
PyObject *fs_config_path = NULL;
char *config_path = NULL;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "s|O&", kwlist,
&name,
PyUnicode_FSConverter, &fs_config_path))
return -1;
if (fs_config_path != NULL) {
config_path = PyBytes_AS_STRING(fs_config_path);
assert(config_path != NULL);
}
self->container = lxc_container_new(name, config_path);
if (!self->container) {
Py_XDECREF(fs_config_path);
PyErr_Format(PyExc_RuntimeError, "%s:%s:%d: error during init for container '%s'.",
__FUNCTION__, __FILE__, __LINE__, name);
return -1;
}
Py_XDECREF(fs_config_path);
return 0;
}
static PyObject *
Container_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
Container *self;
self = (Container *)type->tp_alloc(type, 0);
return (PyObject *)self;
}
/* Container properties */
static PyObject *
Container_config_file_name(Container *self, void *closure)
{
char *rv = NULL;
rv = self->container->config_file_name(self->container);
if (!rv) {
return PyUnicode_FromString("");
}
return PyUnicode_FromString(rv);
}
static PyObject *
Container_controllable(Container *self, void *closure)
{
if (self->container->may_control(self->container)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_defined(Container *self, void *closure)
{
if (self->container->is_defined(self->container)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_init_pid(Container *self, void *closure)
{
return PyLong_FromLong(self->container->init_pid(self->container));
}
static PyObject *
Container_name(Container *self, void *closure)
{
if (!self->container->name) {
return PyUnicode_FromString("");
}
return PyUnicode_FromString(self->container->name);
}
static PyObject *
Container_running(Container *self, void *closure)
{
if (self->container->is_running(self->container)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_state(Container *self, void *closure)
{
const char *rv = NULL;
rv = self->container->state(self->container);
if (!rv) {
return PyUnicode_FromString("");
}
return PyUnicode_FromString(rv);
}
/* Container Functions */
static PyObject *
Container_attach_interface(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"src_ifname", "dst_ifname", NULL};
char *src_name = NULL;
char *dst_name = NULL;
PyObject *py_src_name = NULL;
PyObject *py_dst_name = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "O&|O&", kwlist,
PyUnicode_FSConverter, &py_src_name,
PyUnicode_FSConverter, &py_dst_name))
return NULL;
if (py_src_name != NULL) {
src_name = PyBytes_AS_STRING(py_src_name);
assert(src_name != NULL);
}
if (py_dst_name != NULL) {
dst_name = PyBytes_AS_STRING(py_dst_name);
assert(dst_name != NULL);
}
if (self->container->attach_interface(self->container, src_name, dst_name)) {
Py_XDECREF(py_src_name);
Py_XDECREF(py_dst_name);
Py_RETURN_TRUE;
}
Py_XDECREF(py_src_name);
Py_XDECREF(py_dst_name);
Py_RETURN_FALSE;
}
static PyObject *
Container_detach_interface(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"ifname", NULL};
char *ifname = NULL;
PyObject *py_ifname = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "O&", kwlist,
PyUnicode_FSConverter, &py_ifname))
return NULL;
if (py_ifname != NULL) {
ifname = PyBytes_AS_STRING(py_ifname);
assert(ifname != NULL);
}
if (self->container->detach_interface(self->container, ifname, NULL)) {
Py_XDECREF(py_ifname);
Py_RETURN_TRUE;
}
Py_XDECREF(py_ifname);
Py_RETURN_FALSE;
}
static PyObject *
Container_add_device_node(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"src_path", "dest_path", NULL};
char *src_path = NULL;
char *dst_path = NULL;
PyObject *py_src_path = NULL;
PyObject *py_dst_path = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "O&|O&", kwlist,
PyUnicode_FSConverter, &py_src_path,
PyUnicode_FSConverter, &py_dst_path))
return NULL;
if (py_src_path != NULL) {
src_path = PyBytes_AS_STRING(py_src_path);
assert(src_path != NULL);
}
if (py_dst_path != NULL) {
dst_path = PyBytes_AS_STRING(py_dst_path);
assert(dst_path != NULL);
}
if (self->container->add_device_node(self->container, src_path,
dst_path)) {
Py_XDECREF(py_src_path);
Py_XDECREF(py_dst_path);
Py_RETURN_TRUE;
}
Py_XDECREF(py_src_path);
Py_XDECREF(py_dst_path);
Py_RETURN_FALSE;
}
static PyObject *
Container_attach_and_possibly_wait(Container *self, PyObject *args,
PyObject *kwds, int wait)
{
struct lxc_attach_python_payload payload = { NULL, NULL };
lxc_attach_options_t *options = NULL;
long ret;
pid_t pid;
if (!PyArg_ParseTuple(args, "O|O", &payload.fn, &payload.arg))
return NULL;
if (!PyCallable_Check(payload.fn)) {
PyErr_Format(PyExc_TypeError, "attach: object not callable");
return NULL;
}
options = lxc_attach_parse_options(kwds);
if (!options)
return NULL;
ret = self->container->attach(self->container, lxc_attach_python_exec,
&payload, options, &pid);
if (ret < 0)
goto out;
if (wait) {
Py_BEGIN_ALLOW_THREADS
ret = lxc_wait_for_pid_status(pid);
Py_END_ALLOW_THREADS
/* handle case where attach fails */
if (WIFEXITED(ret) && WEXITSTATUS(ret) == 255)
ret = -1;
} else {
ret = (long)pid;
}
out:
lxc_attach_free_options(options);
return PyLong_FromLong(ret);
}
static PyObject *
Container_attach(Container *self, PyObject *args, PyObject *kwds)
{
return Container_attach_and_possibly_wait(self, args, kwds, 0);
}
static PyObject *
Container_attach_wait(Container *self, PyObject *args, PyObject *kwds)
{
return Container_attach_and_possibly_wait(self, args, kwds, 1);
}
static PyObject *
Container_clear_config(Container *self, PyObject *args, PyObject *kwds)
{
self->container->clear_config(self->container);
Py_RETURN_NONE;
}
static PyObject *
Container_clear_config_item(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"key", NULL};
char *key = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist,
&key))
return NULL;
if (self->container->clear_config_item(self->container, key)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_clone(Container *self, PyObject *args, PyObject *kwds)
{
char *newname = NULL;
char *config_path = NULL;
int flags = 0;
char *bdevtype = NULL;
char *bdevdata = NULL;
unsigned long newsize = 0;
char **hookargs = NULL;
PyObject *py_hookargs = NULL;
PyObject *py_config_path = NULL;
struct lxc_container *new_container = NULL;
int i = 0;
static char *kwlist[] = {"newname", "config_path", "flags", "bdevtype",
"bdevdata", "newsize", "hookargs", NULL};
if (! PyArg_ParseTupleAndKeywords(args, kwds, "s|O&isskO", kwlist,
&newname,
PyUnicode_FSConverter, &py_config_path,
&flags, &bdevtype, &bdevdata, &newsize,
&py_hookargs))
return NULL;
if (py_hookargs) {
if (PyTuple_Check(py_hookargs)) {
hookargs = convert_tuple_to_char_pointer_array(py_hookargs);
if (!hookargs) {
return NULL;
}
}
else {
PyErr_SetString(PyExc_ValueError, "hookargs needs to be a tuple");
return NULL;
}
}
if (py_config_path != NULL) {
config_path = PyBytes_AS_STRING(py_config_path);
assert(config_path != NULL);
}
new_container = self->container->clone(self->container, newname,
config_path, flags, bdevtype,
bdevdata, newsize, hookargs);
Py_XDECREF(py_config_path);
if (hookargs) {
for (i = 0; i < PyTuple_GET_SIZE(py_hookargs); i++)
free(hookargs[i]);
free(hookargs);
}
if (new_container == NULL) {
Py_RETURN_FALSE;
}
lxc_container_put(new_container);
Py_RETURN_TRUE;
}
static PyObject *
Container_console(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"ttynum", "stdinfd", "stdoutfd", "stderrfd",
"escape", NULL};
int ttynum = -1, stdinfd = 0, stdoutfd = 1, stderrfd = 2, escape = 1;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "|iiiii", kwlist,
&ttynum, &stdinfd, &stdoutfd, &stderrfd,
&escape))
return NULL;
if (self->container->console(self->container, ttynum,
stdinfd, stdoutfd, stderrfd, escape) == 0) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_console_getfd(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"ttynum", NULL};
int ttynum = -1, masterfd;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "|i", kwlist, &ttynum))
return NULL;
if (self->container->console_getfd(self->container, &ttynum,
&masterfd) < 0) {
PyErr_SetString(PyExc_ValueError, "Unable to allocate tty");
return NULL;
}
return PyLong_FromLong(masterfd);
}
static PyObject *
Container_create(Container *self, PyObject *args, PyObject *kwds)
{
char* template_name = NULL;
int flags = 0;
char** create_args = {NULL};
PyObject *retval = NULL;
PyObject *vargs = NULL;
char *bdevtype = NULL;
int i = 0;
static char *kwlist[] = {"template", "flags", "bdevtype", "args", NULL};
if (! PyArg_ParseTupleAndKeywords(args, kwds, "|sisO", kwlist,
&template_name, &flags, &bdevtype, &vargs))
return NULL;
if (vargs) {
if (PyTuple_Check(vargs)) {
create_args = convert_tuple_to_char_pointer_array(vargs);
if (!create_args) {
return NULL;
}
}
else {
PyErr_SetString(PyExc_ValueError, "args needs to be a tuple");
return NULL;
}
}
if (self->container->create(self->container, template_name, bdevtype, NULL,
flags, create_args))
retval = Py_True;
else
retval = Py_False;
if (vargs) {
/* We cannot have gotten here unless vargs was given and create_args
* was successfully allocated.
*/
for (i = 0; i < PyTuple_GET_SIZE(vargs); i++)
free(create_args[i]);
free(create_args);
}
Py_INCREF(retval);
return retval;
}
static PyObject *
Container_destroy(Container *self, PyObject *args, PyObject *kwds)
{
if (self->container->destroy(self->container)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_freeze(Container *self, PyObject *args, PyObject *kwds)
{
if (self->container->freeze(self->container)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_get_cgroup_item(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"key", NULL};
char* key = NULL;
int len = 0;
char* value;
PyObject *ret = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist,
&key))
return NULL;
len = self->container->get_cgroup_item(self->container, key, NULL, 0);
if (len < 0) {
PyErr_SetString(PyExc_KeyError, "Invalid cgroup entry");
return NULL;
}
value = (char*) malloc(sizeof(char)*len + 1);
if (value == NULL)
return PyErr_NoMemory();
if (self->container->get_cgroup_item(self->container,
key, value, len + 1) != len) {
PyErr_SetString(PyExc_ValueError, "Unable to read config value");
free(value);
return NULL;
}
ret = PyUnicode_FromString(value);
free(value);
return ret;
}
static PyObject *
Container_get_config_item(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"key", NULL};
char* key = NULL;
int len = 0;
char* value;
PyObject *ret = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "s|", kwlist,
&key))
return NULL;
len = self->container->get_config_item(self->container, key, NULL, 0);
if (len < 0) {
PyErr_SetString(PyExc_KeyError, "Invalid configuration key");
return NULL;
}
if (len == 0) {
return PyUnicode_FromString("");
}
value = (char*) malloc(sizeof(char)*len + 1);
if (value == NULL)
return PyErr_NoMemory();
if (self->container->get_config_item(self->container,
key, value, len + 1) != len) {
PyErr_SetString(PyExc_ValueError, "Unable to read config value");
free(value);
return NULL;
}
ret = PyUnicode_FromString(value);
free(value);
return ret;
}
static PyObject *
Container_get_config_path(Container *self, PyObject *args, PyObject *kwds)
{
const char *rv = NULL;
rv = self->container->get_config_path(self->container);
if (!rv) {
return PyUnicode_FromString("");
}
return PyUnicode_FromString(rv);
}
static PyObject *
Container_get_keys(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"key", NULL};
char* key = NULL;
int len = 0;
char* value;
PyObject *ret = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "|s", kwlist,
&key))
return NULL;
len = self->container->get_keys(self->container, key, NULL, 0);
if (len < 0) {
PyErr_SetString(PyExc_KeyError, "Invalid configuration key");
return NULL;
}
value = (char*) malloc(sizeof(char)*len + 1);
if (value == NULL)
return PyErr_NoMemory();
if (self->container->get_keys(self->container,
key, value, len + 1) != len) {
PyErr_SetString(PyExc_ValueError, "Unable to read config keys");
free(value);
return NULL;
}
ret = PyUnicode_FromString(value);
free(value);
return ret;
}
static PyObject *
Container_get_interfaces(Container *self)
{
int i = 0;
char** interfaces = NULL;
PyObject* ret;
/* Get the interfaces */
interfaces = self->container->get_interfaces(self->container);
if (!interfaces)
return PyTuple_New(0);
/* Count the entries */
while (interfaces[i])
i++;
/* Create the new tuple */
ret = PyTuple_New(i);
if (!ret)
return NULL;
/* Add the entries to the tuple and free the memory */
i = 0;
while (interfaces[i]) {
if (!interfaces[i]) {
i++;
continue;
}
PyObject *unicode = PyUnicode_FromString(interfaces[i]);
if (!unicode) {
Py_DECREF(ret);
ret = NULL;
break;
}
PyTuple_SET_ITEM(ret, i, unicode);
i++;
}
/* Free the list of IPs */
i = 0;
while (interfaces[i]) {
free(interfaces[i]);
i++;
}
free(interfaces);
return ret;
}
static PyObject *
Container_get_ips(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"interface", "family", "scope", NULL};
char* interface = NULL;
char* family = NULL;
int scope = 0;
int i = 0;
char** ips = NULL;
PyObject* ret;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "|ssi", kwlist,
&interface, &family, &scope))
return NULL;
/* Get the IPs */
ips = self->container->get_ips(self->container, interface, family, scope);
if (!ips)
return PyTuple_New(0);
/* Count the entries */
while (ips[i])
i++;
/* Create the new tuple */
ret = PyTuple_New(i);
if (!ret)
return NULL;
/* Add the entries to the tuple and free the memory */
i = 0;
while (ips[i]) {
if (!ips[i]) {
i++;
continue;
}
PyObject *unicode = PyUnicode_FromString(ips[i]);
if (!unicode) {
Py_DECREF(ret);
ret = NULL;
break;
}
PyTuple_SET_ITEM(ret, i, unicode);
i++;
}
/* Free the list of IPs */
i = 0;
while (ips[i]) {
free(ips[i]);
i++;
}
free(ips);
return ret;
}
static PyObject *
Container_get_running_config_item(Container *self, PyObject *args,
PyObject *kwds)
{
static char *kwlist[] = {"key", NULL};
char* key = NULL;
char* value = NULL;
PyObject *ret = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "s|", kwlist,
&key))
return NULL;
value = self->container->get_running_config_item(self->container, key);
if (!value)
Py_RETURN_NONE;
ret = PyUnicode_FromString(value);
free(value);
return ret;
}
static PyObject *
Container_load_config(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"path", NULL};
PyObject *fs_path = NULL;
char* path = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "|O&", kwlist,
PyUnicode_FSConverter, &fs_path))
return NULL;
if (fs_path != NULL) {
path = PyBytes_AS_STRING(fs_path);
assert(path != NULL);
}
if (self->container->load_config(self->container, path)) {
Py_XDECREF(fs_path);
Py_RETURN_TRUE;
}
Py_XDECREF(fs_path);
Py_RETURN_FALSE;
}
static PyObject *
Container_reboot(Container *self, PyObject *args, PyObject *kwds)
{
if (self->container->reboot(self->container)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_rename(Container *self, PyObject *args, PyObject *kwds)
{
char *new_name = NULL;
static char *kwlist[] = {"new_name", NULL};
if (! PyArg_ParseTupleAndKeywords(args, kwds, "s|", kwlist,
&new_name))
return NULL;
if (self->container->rename(self->container, new_name)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_remove_device_node(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"src_path", "dest_path", NULL};
char *src_path = NULL;
char *dst_path = NULL;
PyObject *py_src_path = NULL;
PyObject *py_dst_path = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "O&|O&", kwlist,
PyUnicode_FSConverter, &py_src_path,
PyUnicode_FSConverter, &py_dst_path))
return NULL;
if (py_src_path != NULL) {
src_path = PyBytes_AS_STRING(py_src_path);
assert(src_path != NULL);
}
if (py_dst_path != NULL) {
dst_path = PyBytes_AS_STRING(py_dst_path);
assert(dst_path != NULL);
}
if (self->container->remove_device_node(self->container, src_path,
dst_path)) {
Py_XDECREF(py_src_path);
Py_XDECREF(py_dst_path);
Py_RETURN_TRUE;
}
Py_XDECREF(py_src_path);
Py_XDECREF(py_dst_path);
Py_RETURN_FALSE;
}
static PyObject *
Container_save_config(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"path", NULL};
PyObject *fs_path = NULL;
char* path = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "|O&", kwlist,
PyUnicode_FSConverter, &fs_path))
return NULL;
if (fs_path != NULL) {
path = PyBytes_AS_STRING(fs_path);
assert(path != NULL);
}
if (self->container->save_config(self->container, path)) {
Py_XDECREF(fs_path);
Py_RETURN_TRUE;
}
Py_XDECREF(fs_path);
Py_RETURN_FALSE;
}
static PyObject *
Container_set_cgroup_item(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"key", "value", NULL};
char *key = NULL;
char *value = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "ss", kwlist,
&key, &value))
return NULL;
if (self->container->set_cgroup_item(self->container, key, value)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_set_config_item(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"key", "value", NULL};
char *key = NULL;
char *value = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "ss", kwlist,
&key, &value))
return NULL;
if (self->container->set_config_item(self->container, key, value)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_set_config_path(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"path", NULL};
char *path = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "s", kwlist,
&path))
return NULL;
if (self->container->set_config_path(self->container, path)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_shutdown(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"timeout", NULL};
int timeout = -1;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "|i", kwlist,
&timeout))
return NULL;
if (self->container->shutdown(self->container, timeout)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_snapshot(Container *self, PyObject *args, PyObject *kwds)
{
char *comment_path = NULL;
static char *kwlist[] = {"comment_path", NULL};
int retval = 0;
int ret = 0;
char newname[20];
PyObject *py_comment_path = NULL;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "|O&", kwlist,
PyUnicode_FSConverter, &py_comment_path))
return NULL;
if (py_comment_path != NULL) {
comment_path = PyBytes_AS_STRING(py_comment_path);
assert(comment_path != NULL);
}
retval = self->container->snapshot(self->container, comment_path);
Py_XDECREF(py_comment_path);
if (retval < 0) {
Py_RETURN_FALSE;
}
ret = snprintf(newname, 20, "snap%d", retval);
if (ret < 0 || ret >= 20)
return NULL;
return PyUnicode_FromString(newname);
}
static PyObject *
Container_snapshot_destroy(Container *self, PyObject *args, PyObject *kwds)
{
char *name = NULL;
static char *kwlist[] = {"name", NULL};
if (! PyArg_ParseTupleAndKeywords(args, kwds, "s|", kwlist,
&name))
return NULL;
if (self->container->snapshot_destroy(self->container, name)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_snapshot_list(Container *self, PyObject *args, PyObject *kwds)
{
struct lxc_snapshot *snap;
int snap_count = 0;
PyObject *list = NULL;
int i = 0;
snap_count = self->container->snapshot_list(self->container, &snap);
if (snap_count < 0) {
PyErr_SetString(PyExc_KeyError, "Unable to list snapshots");
return NULL;
}
list = PyTuple_New(snap_count);
for (i = 0; i < snap_count; i++) {
PyObject *list_entry = NULL;
list_entry = PyTuple_New(4);
PyTuple_SET_ITEM(list_entry, 0,
PyUnicode_FromString(snap[i].name));
PyTuple_SET_ITEM(list_entry, 1,
PyUnicode_FromString(snap[i].comment_pathname));
PyTuple_SET_ITEM(list_entry, 2,
PyUnicode_FromString(snap[i].timestamp));
PyTuple_SET_ITEM(list_entry, 3,
PyUnicode_FromString(snap[i].lxcpath));
snap[i].free(&snap[i]);
PyTuple_SET_ITEM(list, i, list_entry);
}
return list;
}
static PyObject *
Container_snapshot_restore(Container *self, PyObject *args, PyObject *kwds)
{
char *name = NULL;
char *newname = NULL;
static char *kwlist[] = {"name", "newname", NULL};
if (! PyArg_ParseTupleAndKeywords(args, kwds, "s|s", kwlist,
&name, &newname))
return NULL;
if (self->container->snapshot_restore(self->container, name, newname)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_start(Container *self, PyObject *args, PyObject *kwds)
{
PyObject *useinit = NULL;
PyObject *daemonize = NULL;
PyObject *close_fds = NULL;
PyObject *vargs = NULL;
char** init_args = {NULL};
PyObject *retval = NULL;
int init_useinit = 0, i = 0;
static char *kwlist[] = {"useinit", "daemonize", "close_fds",
"cmd", NULL};
if (! PyArg_ParseTupleAndKeywords(args, kwds, "|OOOO", kwlist,
&useinit, &daemonize, &close_fds,
&vargs))
return NULL;
if (useinit && useinit == Py_True) {
init_useinit = 1;
}
if (vargs && PyTuple_Check(vargs)) {
init_args = convert_tuple_to_char_pointer_array(vargs);
if (!init_args) {
return NULL;
}
}
if (close_fds && close_fds == Py_True) {
self->container->want_close_all_fds(self->container, true);
}
else {
self->container->want_close_all_fds(self->container, false);
}
if (!daemonize || daemonize == Py_True) {
self->container->want_daemonize(self->container, true);
}
else {
self->container->want_daemonize(self->container, false);
}
if (self->container->start(self->container, init_useinit, init_args))
retval = Py_True;
else
retval = Py_False;
if (vargs) {
/* We cannot have gotten here unless vargs was given and create_args
* was successfully allocated.
*/
for (i = 0; i < PyTuple_GET_SIZE(vargs); i++)
free(init_args[i]);
free(init_args);
}
Py_INCREF(retval);
return retval;
}
static PyObject *
Container_stop(Container *self, PyObject *args, PyObject *kwds)
{
if (self->container->stop(self->container)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_unfreeze(Container *self, PyObject *args, PyObject *kwds)
{
if (self->container->unfreeze(self->container)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
static PyObject *
Container_wait(Container *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"state", "timeout", NULL};
char *state = NULL;
int timeout = -1;
if (! PyArg_ParseTupleAndKeywords(args, kwds, "s|i", kwlist,
&state, &timeout))
return NULL;
if (self->container->wait(self->container, state, timeout)) {
Py_RETURN_TRUE;
}
Py_RETURN_FALSE;
}
/* Function/Properties list */
static PyGetSetDef Container_getseters[] = {
{"config_file_name",
(getter)Container_config_file_name, NULL,
"Path to the container configuration",
NULL},
{"controllable",
(getter)Container_controllable, NULL,
"Boolean indicating whether the container may be controlled",
NULL},
{"defined",
(getter)Container_defined, NULL,
"Boolean indicating whether the container configuration exists",
NULL},
{"init_pid",
(getter)Container_init_pid, NULL,
"PID of the container's init process in the host's PID namespace",
NULL},
{"name",
(getter)Container_name, NULL,
"Container name",
NULL},
{"running",
(getter)Container_running, NULL,
"Boolean indicating whether the container is running or not",
NULL},
{"state",
(getter)Container_state, NULL,
"Container state",
NULL},
{NULL, NULL, NULL, NULL, NULL}
};
static PyMethodDef Container_methods[] = {
{"attach_interface", (PyCFunction)Container_attach_interface,
METH_VARARGS|METH_KEYWORDS,
"attach_interface(src_ifname, dest_ifname) -> boolean\n"
"\n"
"Pass a new network device to the container."
},
{"detach_interface", (PyCFunction)Container_detach_interface,
METH_VARARGS|METH_KEYWORDS,
"detach_interface(ifname) -> boolean\n"
"\n"
"detach a network device from the container."
},
{"add_device_node", (PyCFunction)Container_add_device_node,
METH_VARARGS|METH_KEYWORDS,
"add_device_node(src_path, dest_path) -> boolean\n"
"\n"
"Pass a new device to the container."
},
{"attach", (PyCFunction)Container_attach,
METH_VARARGS|METH_KEYWORDS,
"attach(run, payload) -> int\n"
"\n"
"Attach to the container. Returns the pid of the attached process."
},
{"attach_wait", (PyCFunction)Container_attach_wait,
METH_VARARGS|METH_KEYWORDS,
"attach(run, payload) -> int\n"
"\n"
"Attach to the container. Returns the exit code of the process."
},
{"clear_config", (PyCFunction)Container_clear_config,
METH_NOARGS,
"clear_config()\n"
"\n"
"Clear any container configuration."
},
{"clear_config_item", (PyCFunction)Container_clear_config_item,
METH_VARARGS|METH_KEYWORDS,
"clear_config_item(key) -> boolean\n"
"\n"
"Clear the current value of a config key."
},
{"console", (PyCFunction)Container_console,
METH_VARARGS|METH_KEYWORDS,
"console(ttynum = -1, stdinfd = 0, stdoutfd = 1, stderrfd = 2, "
"escape = 0) -> boolean\n"
"\n"
"Attach to container's console."
},
{"console_getfd", (PyCFunction)Container_console_getfd,
METH_VARARGS|METH_KEYWORDS,
"console(ttynum = -1) -> boolean\n"
"\n"
"Attach to container's console."
},
{"clone", (PyCFunction)Container_clone,
METH_VARARGS|METH_KEYWORDS,
"clone(newname, config_path, flags, bdevtype, bdevdata, newsize, "
"hookargs) -> boolean\n"
"\n"
"Create a new container based on the current one."
},
{"create", (PyCFunction)Container_create,
METH_VARARGS|METH_KEYWORDS,
"create(template, args = (,)) -> boolean\n"
"\n"
"Create a new rootfs for the container, using the given template "
"and passing some optional arguments to it."
},
{"destroy", (PyCFunction)Container_destroy,
METH_NOARGS,
"destroy() -> boolean\n"
"\n"
"Destroys the container."
},
{"freeze", (PyCFunction)Container_freeze,
METH_NOARGS,
"freeze() -> boolean\n"
"\n"
"Freezes the container and returns its return code."
},
{"get_cgroup_item", (PyCFunction)Container_get_cgroup_item,
METH_VARARGS|METH_KEYWORDS,
"get_cgroup_item(key) -> string\n"
"\n"
"Get the current value of a cgroup entry."
},
{"get_config_item", (PyCFunction)Container_get_config_item,
METH_VARARGS|METH_KEYWORDS,
"get_config_item(key) -> string\n"
"\n"
"Get the current value of a config key."
},
{"get_config_path", (PyCFunction)Container_get_config_path,
METH_NOARGS,
"get_config_path() -> string\n"
"\n"
"Return the LXC config path (where the containers are stored)."
},
{"get_keys", (PyCFunction)Container_get_keys,
METH_VARARGS|METH_KEYWORDS,
"get_keys(key) -> string\n"
"\n"
"Get a list of valid sub-keys for a key."
},
{"get_interfaces", (PyCFunction)Container_get_interfaces,
METH_NOARGS,
"get_interface() -> tuple\n"
"\n"
"Get a tuple of interfaces for the container."
},
{"get_ips", (PyCFunction)Container_get_ips,
METH_VARARGS|METH_KEYWORDS,
"get_ips(interface, family, scope) -> tuple\n"
"\n"
"Get a tuple of IPs for the container."
},
{"get_running_config_item", (PyCFunction)Container_get_running_config_item,
METH_VARARGS|METH_KEYWORDS,
"get_running_config_item(key) -> string\n"
"\n"
"Get the runtime value of a config key."
},
{"load_config", (PyCFunction)Container_load_config,
METH_VARARGS|METH_KEYWORDS,
"load_config(path = DEFAULT) -> boolean\n"
"\n"
"Read the container configuration from its default "
"location or from an alternative location if provided."
},
{"reboot", (PyCFunction)Container_reboot,
METH_NOARGS,
"reboot() -> boolean\n"
"\n"
"Ask the container to reboot."
},
{"rename", (PyCFunction)Container_rename,
METH_VARARGS|METH_KEYWORDS,
"rename(new_name) -> boolean\n"
"\n"
"Rename the container."
},
{"remove_device_node", (PyCFunction)Container_remove_device_node,
METH_VARARGS|METH_KEYWORDS,
"remove_device_node(src_path, dest_path) -> boolean\n"
"\n"
"Remove a device from the container."
},
{"save_config", (PyCFunction)Container_save_config,
METH_VARARGS|METH_KEYWORDS,
"save_config(path = DEFAULT) -> boolean\n"
"\n"
"Save the container configuration to its default "
"location or to an alternative location if provided."
},
{"set_cgroup_item", (PyCFunction)Container_set_cgroup_item,
METH_VARARGS|METH_KEYWORDS,
"set_cgroup_item(key, value) -> boolean\n"
"\n"
"Set a cgroup entry to the provided value."
},
{"set_config_item", (PyCFunction)Container_set_config_item,
METH_VARARGS|METH_KEYWORDS,
"set_config_item(key, value) -> boolean\n"
"\n"
"Set a config key to the provided value."
},
{"set_config_path", (PyCFunction)Container_set_config_path,
METH_VARARGS|METH_KEYWORDS,
"set_config_path(path) -> boolean\n"
"\n"
"Set the LXC config path (where the containers are stored)."
},
{"shutdown", (PyCFunction)Container_shutdown,
METH_VARARGS|METH_KEYWORDS,
"shutdown(timeout = -1) -> boolean\n"
"\n"
"Sends SIGPWR to the container and wait for it to shutdown."
"-1 means wait forever, 0 means skip waiting."
},
{"snapshot", (PyCFunction)Container_snapshot,
METH_VARARGS|METH_KEYWORDS,
"snapshot(comment_path = None) -> string\n"
"\n"
"Snapshot the container and return the snapshot name "
"(or False on error)."
},
{"snapshot_destroy", (PyCFunction)Container_snapshot_destroy,
METH_VARARGS|METH_KEYWORDS,
"snapshot_destroy(name) -> boolean\n"
"\n"
"Destroy a snapshot."
},
{"snapshot_list", (PyCFunction)Container_snapshot_list,
METH_NOARGS,
"snapshot_list() -> tuple of snapshot tuples\n"
"\n"
"List all snapshots for a container."
},
{"snapshot_restore", (PyCFunction)Container_snapshot_restore,
METH_VARARGS|METH_KEYWORDS,
"snapshot_restore(name, newname = None) -> boolean\n"
"\n"
"Restore a container snapshot. If newname is provided a new "
"container will be created from the snapshot, otherwise an in-place "
"restore will be attempted."
},
{"start", (PyCFunction)Container_start,
METH_VARARGS|METH_KEYWORDS,
"start(useinit = False, daemonize=True, close_fds=False, "
"cmd = (,)) -> boolean\n"
"\n"
"Start the container, return True on success.\n"
"When set useinit will make LXC use lxc-init to start the container.\n"
"The container can be started in the foreground with daemonize=False.\n"
"All fds may also be closed by passing close_fds=True."
},
{"stop", (PyCFunction)Container_stop,
METH_NOARGS,
"stop() -> boolean\n"
"\n"
"Stop the container and returns its return code."
},
{"unfreeze", (PyCFunction)Container_unfreeze,
METH_NOARGS,
"unfreeze() -> boolean\n"
"\n"
"Unfreezes the container and returns its return code."
},
{"wait", (PyCFunction)Container_wait,
METH_VARARGS|METH_KEYWORDS,
"wait(state, timeout = -1) -> boolean\n"
"\n"
"Wait for the container to reach a given state or timeout."
},
{NULL, NULL, 0, NULL}
};
static PyTypeObject _lxc_ContainerType = {
PyVarObject_HEAD_INIT(NULL, 0)
"lxc.Container", /* tp_name */
sizeof(Container), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)Container_dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_reserved */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT |
Py_TPFLAGS_BASETYPE, /* tp_flags */
"Container objects", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
Container_methods, /* tp_methods */
0, /* tp_members */
Container_getseters, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
(initproc)Container_init, /* tp_init */
0, /* tp_alloc */
Container_new, /* tp_new */
};
static PyMethodDef LXC_methods[] = {
{"arch_to_personality", (PyCFunction)LXC_arch_to_personality, METH_O,
"Returns the process personality of the corresponding architecture"},
{"attach_run_command", (PyCFunction)LXC_attach_run_command, METH_O,
"Runs a command when attaching, to use as the run parameter for attach "
"or attach_wait"},
{"attach_run_shell", (PyCFunction)LXC_attach_run_shell, METH_O,
"Starts up a shell when attaching, to use as the run parameter for "
"attach or attach_wait"},
{"get_global_config_item", (PyCFunction)LXC_get_global_config_item,
METH_VARARGS|METH_KEYWORDS,
"Returns the current LXC config path"},
{"get_version", (PyCFunction)LXC_get_version, METH_NOARGS,
"Returns the current LXC library version"},
{"list_containers", (PyCFunction)LXC_list_containers,
METH_VARARGS|METH_KEYWORDS,
"Returns a list of container names or objects"},
{NULL, NULL, 0, NULL}
};
static PyModuleDef _lxcmodule = {
PyModuleDef_HEAD_INIT,
"_lxc",
"Binding for liblxc in python",
-1,
LXC_methods
};
PyMODINIT_FUNC
PyInit__lxc(void)
{
PyObject* m;
PyObject* d;
if (PyType_Ready(&_lxc_ContainerType) < 0)
return NULL;
m = PyModule_Create(&_lxcmodule);
if (m == NULL)
return NULL;
Py_INCREF(&_lxc_ContainerType);
PyModule_AddObject(m, "Container", (PyObject *)&_lxc_ContainerType);
/* add constants */
d = PyModule_GetDict(m);
#define PYLXC_EXPORT_CONST(c) \
PyDict_SetItemString(d, #c, PyLong_FromLong(c))
/* namespace flags (no other python lib exports this) */
PYLXC_EXPORT_CONST(CLONE_NEWUTS);
PYLXC_EXPORT_CONST(CLONE_NEWIPC);
PYLXC_EXPORT_CONST(CLONE_NEWUSER);
PYLXC_EXPORT_CONST(CLONE_NEWPID);
PYLXC_EXPORT_CONST(CLONE_NEWNET);
PYLXC_EXPORT_CONST(CLONE_NEWNS);
/* attach: environment variable handling */
PYLXC_EXPORT_CONST(LXC_ATTACH_CLEAR_ENV);
PYLXC_EXPORT_CONST(LXC_ATTACH_KEEP_ENV);
/* attach: attach options */
PYLXC_EXPORT_CONST(LXC_ATTACH_DEFAULT);
PYLXC_EXPORT_CONST(LXC_ATTACH_DROP_CAPABILITIES);
PYLXC_EXPORT_CONST(LXC_ATTACH_LSM_EXEC);
PYLXC_EXPORT_CONST(LXC_ATTACH_LSM_NOW);
PYLXC_EXPORT_CONST(LXC_ATTACH_MOVE_TO_CGROUP);
PYLXC_EXPORT_CONST(LXC_ATTACH_REMOUNT_PROC_SYS);
PYLXC_EXPORT_CONST(LXC_ATTACH_SET_PERSONALITY);
/* clone: clone flags */
PYLXC_EXPORT_CONST(LXC_CLONE_KEEPBDEVTYPE);
PYLXC_EXPORT_CONST(LXC_CLONE_KEEPMACADDR);
PYLXC_EXPORT_CONST(LXC_CLONE_KEEPNAME);
PYLXC_EXPORT_CONST(LXC_CLONE_MAYBE_SNAPSHOT);
PYLXC_EXPORT_CONST(LXC_CLONE_SNAPSHOT);
/* create: create flags */
PYLXC_EXPORT_CONST(LXC_CREATE_QUIET);
#undef PYLXC_EXPORT_CONST
return m;
}
/*
* kate: space-indent on; indent-width 4; mixedindent off; indent-mode cstyle;
*/
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