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 /* XXX - use appropriate resource values here */
57 rspec_t rspec = { 32, VC_VXF_SCHED_FLAGS, -1, -1 };
59 if (!PyArg_ParseTuple(args, "I|K", &ctx, &flags))
62 if (pl_chcontext(ctx, flags, bcaps, &rspec))
63 PyErr_SetFromErrno(PyExc_OSError);
69 vserver_set_rlimit(PyObject *self, PyObject *args) {
70 struct vc_rlimit limits;
75 limits.min = VC_LIM_KEEP;
76 limits.soft = VC_LIM_KEEP;
77 limits.hard = VC_LIM_KEEP;
79 if (!PyArg_ParseTuple(args, "IiL", &xid, &resource, &limits.hard))
83 if (vc_set_rlimit(xid, resource, &limits))
84 ret = PyErr_SetFromErrno(PyExc_OSError);
85 else if (vc_get_rlimit(xid, resource, &limits)==-1)
86 ret = PyErr_SetFromErrno(PyExc_OSError);
88 ret = Py_BuildValue("L",limits.hard);
94 vserver_get_rlimit(PyObject *self, PyObject *args) {
95 struct vc_rlimit limits;
100 limits.min = VC_LIM_KEEP;
101 limits.soft = VC_LIM_KEEP;
102 limits.hard = VC_LIM_KEEP;
104 if (!PyArg_ParseTuple(args, "Ii", &xid, &resource))
108 if (vc_get_rlimit(xid, resource, &limits)==-1)
109 ret = PyErr_SetFromErrno(PyExc_OSError);
111 ret = Py_BuildValue("L",limits.hard);
121 vserver_setsched(PyObject *self, PyObject *args)
124 struct vc_set_sched sched;
125 struct vc_ctx_flags flags;
126 unsigned cpuguaranteed = 0;
128 sched.set_mask = (VC_VXSM_FILL_RATE |
133 if (!PyArg_ParseTuple(args, "I|I|I|I|I|I|I", &xid,
142 flags.flagword = VC_VXF_SCHED_HARD;
143 flags.mask |= VC_VXF_SCHED_HARD;
144 #define VC_VXF_SCHED_SHARE 0x00000800ull
145 if (cpuguaranteed==0) {
146 flags.flagword |= VC_VXF_SCHED_SHARE;
147 flags.mask |= VC_VXF_SCHED_SHARE;
150 if (vc_set_cflags(xid, &flags) == -1)
151 return PyErr_SetFromErrno(PyExc_OSError);
153 if (vc_set_sched(xid, &sched) == -1)
154 return PyErr_SetFromErrno(PyExc_OSError);
165 vserver_get_dlimit(PyObject *self, PyObject *args)
170 struct vcmd_ctx_dlimit_v0 data;
173 if (!PyArg_ParseTuple(args, "si", &path,&xid))
176 memset(&data, 0, sizeof(data));
179 r = vserver(VCMD_get_dlimit, xid, &data);
181 res = Py_BuildValue("(i,i,i,i,i)",
188 res = PyErr_SetFromErrno(PyExc_OSError);
196 vserver_set_dlimit(PyObject *self, PyObject *args)
200 struct vcmd_ctx_dlimit_base_v0 init;
201 struct vcmd_ctx_dlimit_v0 data;
203 memset(&data,0,sizeof(data));
204 if (!PyArg_ParseTuple(args, "siiiiii", &path,
216 memset(&init, 0, sizeof(init));
220 if ((vserver(VCMD_add_dlimit, xid, &init) && errno != EEXIST) ||
221 vserver(VCMD_set_dlimit, xid, &data))
222 return PyErr_SetFromErrno(PyExc_OSError);
227 static PyMethodDef methods[] = {
228 { "chcontext", vserver_chcontext, METH_VARARGS,
229 "chcontext to vserver with provided flags" },
231 { "setsched", vserver_setsched, METH_VARARGS,
232 "Change vserver scheduling attributes for given vserver context" },
234 { "setdlimit", vserver_set_dlimit, METH_VARARGS,
235 "Set disk limits for given vserver context" },
236 { "getdlimit", vserver_get_dlimit, METH_VARARGS,
237 "Get disk limits for given vserver context" },
238 { "setrlimit", vserver_set_rlimit, METH_VARARGS,
239 "Set resource limits for given resource of a vserver context" },
240 { "getrlimit", vserver_get_rlimit, METH_VARARGS,
241 "Get resource limits for given resource of a vserver context" },
242 { NULL, NULL, 0, NULL }
246 initvserverimpl(void)
250 mod = Py_InitModule("vserverimpl", methods);
252 /* export the set of 'safe' capabilities */
253 PyModule_AddIntConstant(mod, "CAP_SAFE", ~vc_get_insecurebcaps());
255 /* export the default vserver directory */
256 PyModule_AddStringConstant(mod, "VSERVER_BASEDIR", DEFAULT_VSERVERDIR);
258 /* export limit-related constants */
259 PyModule_AddIntConstant(mod, "DLIMIT_KEEP", (int)CDLIM_KEEP);
260 PyModule_AddIntConstant(mod, "DLIMIT_INF", (int)CDLIM_INFINITY);