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")) &&
58 (cpu_share = PyNumber_Int(cpu_share)))
59 rspec->cpu_share = PyInt_AsLong(cpu_share);
68 vserver_chcontext(PyObject *self, PyObject *args)
72 uint32_t bcaps = ~vc_get_insecurebcaps();
73 rspec_t rspec = { 32, VC_VXF_SCHED_FLAGS, -1, -1 };
76 if (!PyArg_ParseTuple(args, "IO|K", &ctx, &resources, &flags) ||
77 get_rspec(resources, &rspec))
80 if (pl_chcontext(ctx, flags, bcaps, &rspec))
81 return PyErr_SetFromErrno(PyExc_OSError);
87 vserver_set_rlimit(PyObject *self, PyObject *args) {
88 struct vc_rlimit limits;
93 limits.min = VC_LIM_KEEP;
94 limits.soft = VC_LIM_KEEP;
95 limits.hard = VC_LIM_KEEP;
97 if (!PyArg_ParseTuple(args, "IiL", &xid, &resource, &limits.hard))
101 if (vc_set_rlimit(xid, resource, &limits))
102 ret = PyErr_SetFromErrno(PyExc_OSError);
103 else if (vc_get_rlimit(xid, resource, &limits)==-1)
104 ret = PyErr_SetFromErrno(PyExc_OSError);
106 ret = Py_BuildValue("L",limits.hard);
112 vserver_get_rlimit(PyObject *self, PyObject *args) {
113 struct vc_rlimit limits;
118 limits.min = VC_LIM_KEEP;
119 limits.soft = VC_LIM_KEEP;
120 limits.hard = VC_LIM_KEEP;
122 if (!PyArg_ParseTuple(args, "Ii", &xid, &resource))
126 if (vc_get_rlimit(xid, resource, &limits)==-1)
127 ret = PyErr_SetFromErrno(PyExc_OSError);
129 ret = Py_BuildValue("L",limits.hard);
138 vserver_setsched(PyObject *self, PyObject *args)
141 rspec_t rspec = { 32, VC_VXF_SCHED_FLAGS, -1, -1 };
144 if (!PyArg_ParseTuple(args, "IO", &ctx, &resources) ||
145 get_rspec(resources, &rspec))
148 if (pl_setsched(ctx, rspec.cpu_share, rspec.cpu_sched_flags))
149 return PyErr_SetFromErrno(PyExc_OSError);
155 vserver_get_dlimit(PyObject *self, PyObject *args)
160 struct vcmd_ctx_dlimit_v0 data;
163 if (!PyArg_ParseTuple(args, "si", &path,&xid))
166 memset(&data, 0, sizeof(data));
169 r = vserver(VCMD_get_dlimit, xid, &data);
171 res = Py_BuildValue("(i,i,i,i,i)",
178 res = PyErr_SetFromErrno(PyExc_OSError);
186 vserver_set_dlimit(PyObject *self, PyObject *args)
190 struct vcmd_ctx_dlimit_base_v0 init;
191 struct vcmd_ctx_dlimit_v0 data;
193 memset(&data,0,sizeof(data));
194 if (!PyArg_ParseTuple(args, "siiiiii", &path,
206 memset(&init, 0, sizeof(init));
210 if ((vserver(VCMD_add_dlimit, xid, &init) && errno != EEXIST) ||
211 vserver(VCMD_set_dlimit, xid, &data))
212 return PyErr_SetFromErrno(PyExc_OSError);
218 vserver_unset_dlimit(PyObject *self, PyObject *args)
222 struct vcmd_ctx_dlimit_base_v0 init;
224 if (!PyArg_ParseTuple(args, "si", &path, &xid))
227 memset(&init, 0, sizeof(init));
231 if (vserver(VCMD_rem_dlimit, xid, &init) && errno != ESRCH)
232 return PyErr_SetFromErrno(PyExc_OSError);
238 vserver_killall(PyObject *self, PyObject *args)
243 if (!PyArg_ParseTuple(args, "Ii", &ctx, &sig))
246 if (vc_ctx_kill(ctx, 0, sig) && errno != ESRCH)
247 return PyErr_SetFromErrno(PyExc_OSError);
252 static PyMethodDef methods[] = {
253 { "chcontext", vserver_chcontext, METH_VARARGS,
254 "chcontext to vserver with provided flags" },
255 { "setsched", vserver_setsched, METH_VARARGS,
256 "Change vserver scheduling attributes for given vserver context" },
257 { "setdlimit", vserver_set_dlimit, METH_VARARGS,
258 "Set disk limits for given vserver context" },
259 { "unsetdlimit", vserver_unset_dlimit, METH_VARARGS,
260 "Remove disk limits for given vserver context" },
261 { "getdlimit", vserver_get_dlimit, METH_VARARGS,
262 "Get disk limits for given vserver context" },
263 { "setrlimit", vserver_set_rlimit, METH_VARARGS,
264 "Set resource limits for given resource of a vserver context" },
265 { "getrlimit", vserver_get_rlimit, METH_VARARGS,
266 "Get resource limits for given resource of a vserver context" },
267 { "killall", vserver_killall, METH_VARARGS,
268 "Send signal to all processes in vserver context" },
269 { NULL, NULL, 0, NULL }
273 initvserverimpl(void)
277 mod = Py_InitModule("vserverimpl", methods);
279 /* export the set of 'safe' capabilities */
280 PyModule_AddIntConstant(mod, "CAP_SAFE", ~vc_get_insecurebcaps());
282 /* export the default vserver directory */
283 PyModule_AddStringConstant(mod, "VSERVER_BASEDIR", DEFAULT_VSERVERDIR);
285 /* export limit-related constants */
286 PyModule_AddIntConstant(mod, "DLIMIT_KEEP", (int)CDLIM_KEEP);
287 PyModule_AddIntConstant(mod, "DLIMIT_INF", (int)CDLIM_INFINITY);