1 /* Copyright 2005 Princeton University
3 Redistribution and use in source and binary forms, with or without
4 modification, are permitted provided that the following conditions
7 * Redistributions of source code must retain the above copyright
8 notice, this list of conditions and the following disclaimer.
10 * Redistributions in binary form must reproduce the above
11 copyright notice, this list of conditions and the following
12 disclaimer in the documentation and/or other materials provided
13 with the distribution.
15 * Neither the name of the copyright holder nor the names of its
16 contributors may be used to endorse or promote products derived
17 from this software without specific prior written permission.
19 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL PRINCETON
23 UNIVERSITY OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24 INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
25 BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
26 OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
27 AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY
29 WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 POSSIBILITY OF SUCH DAMAGE.
41 #include "pathconfig.h"
42 #include "planetlab.h"
45 #include "vserver-internal.h"
47 #define NONE ({ Py_INCREF(Py_None); Py_None; })
53 vserver_chcontext(PyObject *self, PyObject *args)
58 uint32_t bcaps = ~vc_get_insecurebcaps();
60 if (!PyArg_ParseTuple(args, "I|K", &ctx, &flags))
63 if ((result = pl_chcontext(ctx, flags, bcaps)) < 0)
64 return PyErr_SetFromErrno(PyExc_OSError);
66 return PyBool_FromLong(result);
70 vserver_setup_done(PyObject *self, PyObject *args)
74 if (!PyArg_ParseTuple(args, "I", &ctx))
77 if (pl_setup_done(ctx) < 0)
78 return PyErr_SetFromErrno(PyExc_OSError);
84 vserver_set_rlimit(PyObject *self, PyObject *args) {
85 struct vc_rlimit limits;
90 limits.min = VC_LIM_KEEP;
91 limits.soft = VC_LIM_KEEP;
92 limits.hard = VC_LIM_KEEP;
94 if (!PyArg_ParseTuple(args, "IiL", &xid, &resource, &limits.hard))
97 if (vc_set_rlimit(xid, resource, &limits))
98 ret = PyErr_SetFromErrno(PyExc_OSError);
99 else if (vc_get_rlimit(xid, resource, &limits)==-1)
100 ret = PyErr_SetFromErrno(PyExc_OSError);
102 ret = Py_BuildValue("L",limits.hard);
108 vserver_get_rlimit(PyObject *self, PyObject *args) {
109 struct vc_rlimit limits;
114 limits.min = VC_LIM_KEEP;
115 limits.soft = VC_LIM_KEEP;
116 limits.hard = VC_LIM_KEEP;
118 if (!PyArg_ParseTuple(args, "Ii", &xid, &resource))
121 if (vc_get_rlimit(xid, resource, &limits)==-1)
122 ret = PyErr_SetFromErrno(PyExc_OSError);
124 ret = Py_BuildValue("L",limits.hard);
133 vserver_setsched(PyObject *self, PyObject *args)
137 uint32_t cpu_sched_flags = VC_VXF_SCHED_FLAGS;
139 if (!PyArg_ParseTuple(args, "II|I", &ctx, &cpu_share, &cpu_sched_flags))
142 /* ESRCH indicates that there are no processes in the context */
143 if (pl_setsched(ctx, cpu_share, cpu_sched_flags) &&
145 return PyErr_SetFromErrno(PyExc_OSError);
151 vserver_get_dlimit(PyObject *self, PyObject *args)
156 struct vcmd_ctx_dlimit_v0 data;
159 if (!PyArg_ParseTuple(args, "si", &path,&xid))
162 memset(&data, 0, sizeof(data));
165 r = vserver(VCMD_get_dlimit, xid, &data);
167 res = Py_BuildValue("(i,i,i,i,i)",
174 res = PyErr_SetFromErrno(PyExc_OSError);
182 vserver_set_dlimit(PyObject *self, PyObject *args)
186 struct vcmd_ctx_dlimit_base_v0 init;
187 struct vcmd_ctx_dlimit_v0 data;
189 memset(&data,0,sizeof(data));
190 if (!PyArg_ParseTuple(args, "siiiiii", &path,
202 memset(&init, 0, sizeof(init));
206 if ((vserver(VCMD_add_dlimit, xid, &init) && errno != EEXIST) ||
207 vserver(VCMD_set_dlimit, xid, &data))
208 return PyErr_SetFromErrno(PyExc_OSError);
214 vserver_unset_dlimit(PyObject *self, PyObject *args)
218 struct vcmd_ctx_dlimit_base_v0 init;
220 if (!PyArg_ParseTuple(args, "si", &path, &xid))
223 memset(&init, 0, sizeof(init));
227 if (vserver(VCMD_rem_dlimit, xid, &init) && errno != ESRCH)
228 return PyErr_SetFromErrno(PyExc_OSError);
234 vserver_killall(PyObject *self, PyObject *args)
239 if (!PyArg_ParseTuple(args, "Ii", &ctx, &sig))
242 if (vc_ctx_kill(ctx, 0, sig) && errno != ESRCH)
243 return PyErr_SetFromErrno(PyExc_OSError);
248 static PyMethodDef methods[] = {
249 { "chcontext", vserver_chcontext, METH_VARARGS,
250 "chcontext to vserver with provided flags" },
251 { "setup_done", vserver_setup_done, METH_VARARGS,
252 "Release vserver setup lock" },
253 { "setsched", vserver_setsched, METH_VARARGS,
254 "Change vserver scheduling attributes for given vserver context" },
255 { "setdlimit", vserver_set_dlimit, METH_VARARGS,
256 "Set disk limits for given vserver context" },
257 { "unsetdlimit", vserver_unset_dlimit, METH_VARARGS,
258 "Remove disk limits for given vserver context" },
259 { "getdlimit", vserver_get_dlimit, METH_VARARGS,
260 "Get disk limits for given vserver context" },
261 { "setrlimit", vserver_set_rlimit, METH_VARARGS,
262 "Set resource limits for given resource of a vserver context" },
263 { "getrlimit", vserver_get_rlimit, METH_VARARGS,
264 "Get resource limits for given resource of a vserver context" },
265 { "killall", vserver_killall, METH_VARARGS,
266 "Send signal to all processes in vserver context" },
267 { NULL, NULL, 0, NULL }
271 initvserverimpl(void)
275 mod = Py_InitModule("vserverimpl", methods);
277 /* export the set of 'safe' capabilities */
278 PyModule_AddIntConstant(mod, "CAP_SAFE", ~vc_get_insecurebcaps());
280 /* export the default vserver directory */
281 PyModule_AddStringConstant(mod, "VSERVER_BASEDIR", DEFAULT_VSERVERDIR);
283 /* export limit-related constants */
284 PyModule_AddIntConstant(mod, "DLIMIT_KEEP", (int)CDLIM_KEEP);
285 PyModule_AddIntConstant(mod, "DLIMIT_INF", (int)CDLIM_INFINITY);
287 /* scheduler flags */
288 PyModule_AddIntConstant(mod,
289 "VS_SCHED_CPU_GUARANTEED",
290 VS_SCHED_CPU_GUARANTEED);