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"
48 get_rspec(PyObject *resources, rspec_t *rspec)
52 if (!PyMapping_Check(resources))
54 PyErr_SetString(PyExc_TypeError, "invalid rspec");
57 if ((cpu_share = PyMapping_GetItemString(resources, "nm_cpu_share")))
59 if (PyInt_Check(cpu_share))
61 rspec->cpu_share = PyInt_AS_LONG(cpu_share);
64 PyErr_SetString(PyExc_TypeError, "nm_cpu_share not an integer");
74 vserver_chcontext(PyObject *self, PyObject *args)
78 uint32_t bcaps = ~vc_get_insecurebcaps();
79 rspec_t rspec = { 32, VC_VXF_SCHED_FLAGS, -1, -1 };
82 if (!PyArg_ParseTuple(args, "IO|K", &ctx, &resources, &flags) ||
83 get_rspec(resources, &rspec))
86 if (pl_chcontext(ctx, flags, bcaps, &rspec))
87 return PyErr_SetFromErrno(PyExc_OSError);
93 vserver_set_rlimit(PyObject *self, PyObject *args) {
94 struct vc_rlimit limits;
99 limits.min = VC_LIM_KEEP;
100 limits.soft = VC_LIM_KEEP;
101 limits.hard = VC_LIM_KEEP;
103 if (!PyArg_ParseTuple(args, "IiL", &xid, &resource, &limits.hard))
107 if (vc_set_rlimit(xid, resource, &limits))
108 ret = PyErr_SetFromErrno(PyExc_OSError);
109 else if (vc_get_rlimit(xid, resource, &limits)==-1)
110 ret = PyErr_SetFromErrno(PyExc_OSError);
112 ret = Py_BuildValue("L",limits.hard);
118 vserver_get_rlimit(PyObject *self, PyObject *args) {
119 struct vc_rlimit limits;
124 limits.min = VC_LIM_KEEP;
125 limits.soft = VC_LIM_KEEP;
126 limits.hard = VC_LIM_KEEP;
128 if (!PyArg_ParseTuple(args, "Ii", &xid, &resource))
132 if (vc_get_rlimit(xid, resource, &limits)==-1)
133 ret = PyErr_SetFromErrno(PyExc_OSError);
135 ret = Py_BuildValue("L",limits.hard);
144 vserver_setsched(PyObject *self, PyObject *args)
147 rspec_t rspec = { 32, VC_VXF_SCHED_FLAGS, -1, -1 };
150 if (!PyArg_ParseTuple(args, "IO", &ctx, &resources) ||
151 get_rspec(resources, &rspec))
154 /* ESRCH indicates that there are no processes in the context */
155 if (pl_setsched(ctx, rspec.cpu_share, rspec.cpu_sched_flags) &&
157 return PyErr_SetFromErrno(PyExc_OSError);
163 vserver_get_dlimit(PyObject *self, PyObject *args)
168 struct vcmd_ctx_dlimit_v0 data;
171 if (!PyArg_ParseTuple(args, "si", &path,&xid))
174 memset(&data, 0, sizeof(data));
177 r = vserver(VCMD_get_dlimit, xid, &data);
179 res = Py_BuildValue("(i,i,i,i,i)",
186 res = PyErr_SetFromErrno(PyExc_OSError);
194 vserver_set_dlimit(PyObject *self, PyObject *args)
198 struct vcmd_ctx_dlimit_base_v0 init;
199 struct vcmd_ctx_dlimit_v0 data;
201 memset(&data,0,sizeof(data));
202 if (!PyArg_ParseTuple(args, "siiiiii", &path,
214 memset(&init, 0, sizeof(init));
218 if ((vserver(VCMD_add_dlimit, xid, &init) && errno != EEXIST) ||
219 vserver(VCMD_set_dlimit, xid, &data))
220 return PyErr_SetFromErrno(PyExc_OSError);
226 vserver_unset_dlimit(PyObject *self, PyObject *args)
230 struct vcmd_ctx_dlimit_base_v0 init;
232 if (!PyArg_ParseTuple(args, "si", &path, &xid))
235 memset(&init, 0, sizeof(init));
239 if (vserver(VCMD_rem_dlimit, xid, &init) && errno != ESRCH)
240 return PyErr_SetFromErrno(PyExc_OSError);
246 vserver_killall(PyObject *self, PyObject *args)
251 if (!PyArg_ParseTuple(args, "Ii", &ctx, &sig))
254 if (vc_ctx_kill(ctx, 0, sig) && errno != ESRCH)
255 return PyErr_SetFromErrno(PyExc_OSError);
260 static PyMethodDef methods[] = {
261 { "chcontext", vserver_chcontext, METH_VARARGS,
262 "chcontext to vserver with provided flags" },
263 { "setsched", vserver_setsched, METH_VARARGS,
264 "Change vserver scheduling attributes for given vserver context" },
265 { "setdlimit", vserver_set_dlimit, METH_VARARGS,
266 "Set disk limits for given vserver context" },
267 { "unsetdlimit", vserver_unset_dlimit, METH_VARARGS,
268 "Remove disk limits for given vserver context" },
269 { "getdlimit", vserver_get_dlimit, METH_VARARGS,
270 "Get disk limits for given vserver context" },
271 { "setrlimit", vserver_set_rlimit, METH_VARARGS,
272 "Set resource limits for given resource of a vserver context" },
273 { "getrlimit", vserver_get_rlimit, METH_VARARGS,
274 "Get resource limits for given resource of a vserver context" },
275 { "killall", vserver_killall, METH_VARARGS,
276 "Send signal to all processes in vserver context" },
277 { NULL, NULL, 0, NULL }
281 initvserverimpl(void)
285 mod = Py_InitModule("vserverimpl", methods);
287 /* export the set of 'safe' capabilities */
288 PyModule_AddIntConstant(mod, "CAP_SAFE", ~vc_get_insecurebcaps());
290 /* export the default vserver directory */
291 PyModule_AddStringConstant(mod, "VSERVER_BASEDIR", DEFAULT_VSERVERDIR);
293 /* export limit-related constants */
294 PyModule_AddIntConstant(mod, "DLIMIT_KEEP", (int)CDLIM_KEEP);
295 PyModule_AddIntConstant(mod, "DLIMIT_INF", (int)CDLIM_INFINITY);