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"
51 vserver_chcontext(PyObject *self, PyObject *args)
55 uint32_t bcaps = ~vc_get_insecurebcaps();
56 rspec_t rspec = { 32, VC_VXF_SCHED_FLAGS, -1, -1 };
60 if (!PyArg_ParseTuple(args, "IO!|K", &ctx, &PyDict_Type, &resources, &flags))
62 if ((cpu_share = PyMapping_GetItemString(resources, "nm_cpu_share")) &&
63 (cpu_share = PyNumber_Int(cpu_share)))
64 rspec.cpu_share = PyInt_AsLong(cpu_share);
66 if (pl_chcontext(ctx, flags, bcaps, &rspec))
67 PyErr_SetFromErrno(PyExc_OSError);
73 vserver_set_rlimit(PyObject *self, PyObject *args) {
74 struct vc_rlimit limits;
79 limits.min = VC_LIM_KEEP;
80 limits.soft = VC_LIM_KEEP;
81 limits.hard = VC_LIM_KEEP;
83 if (!PyArg_ParseTuple(args, "IiL", &xid, &resource, &limits.hard))
87 if (vc_set_rlimit(xid, resource, &limits))
88 ret = PyErr_SetFromErrno(PyExc_OSError);
89 else if (vc_get_rlimit(xid, resource, &limits)==-1)
90 ret = PyErr_SetFromErrno(PyExc_OSError);
92 ret = Py_BuildValue("L",limits.hard);
98 vserver_get_rlimit(PyObject *self, PyObject *args) {
99 struct vc_rlimit limits;
104 limits.min = VC_LIM_KEEP;
105 limits.soft = VC_LIM_KEEP;
106 limits.hard = VC_LIM_KEEP;
108 if (!PyArg_ParseTuple(args, "Ii", &xid, &resource))
112 if (vc_get_rlimit(xid, resource, &limits)==-1)
113 ret = PyErr_SetFromErrno(PyExc_OSError);
115 ret = Py_BuildValue("L",limits.hard);
125 vserver_setsched(PyObject *self, PyObject *args)
128 struct vc_set_sched sched;
129 struct vc_ctx_flags flags;
130 unsigned cpuguaranteed = 0;
132 sched.set_mask = (VC_VXSM_FILL_RATE |
137 if (!PyArg_ParseTuple(args, "I|I|I|I|I|I|I", &xid,
146 flags.flagword = VC_VXF_SCHED_HARD;
147 flags.mask |= VC_VXF_SCHED_HARD;
148 #define VC_VXF_SCHED_SHARE 0x00000800ull
149 if (cpuguaranteed==0) {
150 flags.flagword |= VC_VXF_SCHED_SHARE;
151 flags.mask |= VC_VXF_SCHED_SHARE;
154 if (vc_set_cflags(xid, &flags) == -1)
155 return PyErr_SetFromErrno(PyExc_OSError);
157 if (vc_set_sched(xid, &sched) == -1)
158 return PyErr_SetFromErrno(PyExc_OSError);
169 vserver_get_dlimit(PyObject *self, PyObject *args)
174 struct vcmd_ctx_dlimit_v0 data;
177 if (!PyArg_ParseTuple(args, "si", &path,&xid))
180 memset(&data, 0, sizeof(data));
183 r = vserver(VCMD_get_dlimit, xid, &data);
185 res = Py_BuildValue("(i,i,i,i,i)",
192 res = PyErr_SetFromErrno(PyExc_OSError);
200 vserver_set_dlimit(PyObject *self, PyObject *args)
204 struct vcmd_ctx_dlimit_base_v0 init;
205 struct vcmd_ctx_dlimit_v0 data;
207 memset(&data,0,sizeof(data));
208 if (!PyArg_ParseTuple(args, "siiiiii", &path,
220 memset(&init, 0, sizeof(init));
224 if ((vserver(VCMD_add_dlimit, xid, &init) && errno != EEXIST) ||
225 vserver(VCMD_set_dlimit, xid, &data))
226 return PyErr_SetFromErrno(PyExc_OSError);
231 static PyMethodDef methods[] = {
232 { "chcontext", vserver_chcontext, METH_VARARGS,
233 "chcontext to vserver with provided flags" },
235 { "setsched", vserver_setsched, METH_VARARGS,
236 "Change vserver scheduling attributes for given vserver context" },
238 { "setdlimit", vserver_set_dlimit, METH_VARARGS,
239 "Set disk limits for given vserver context" },
240 { "getdlimit", vserver_get_dlimit, METH_VARARGS,
241 "Get disk limits for given vserver context" },
242 { "setrlimit", vserver_set_rlimit, METH_VARARGS,
243 "Set resource limits for given resource of a vserver context" },
244 { "getrlimit", vserver_get_rlimit, METH_VARARGS,
245 "Get resource limits for given resource of a vserver context" },
246 { NULL, NULL, 0, NULL }
250 initvserverimpl(void)
254 mod = Py_InitModule("vserverimpl", methods);
256 /* export the set of 'safe' capabilities */
257 PyModule_AddIntConstant(mod, "CAP_SAFE", ~vc_get_insecurebcaps());
259 /* export the default vserver directory */
260 PyModule_AddStringConstant(mod, "VSERVER_BASEDIR", DEFAULT_VSERVERDIR);
262 /* export limit-related constants */
263 PyModule_AddIntConstant(mod, "DLIMIT_KEEP", (int)CDLIM_KEEP);
264 PyModule_AddIntConstant(mod, "DLIMIT_INF", (int)CDLIM_INFINITY);