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.
43 #include <sys/ioctl.h>
44 #include <sys/types.h>
51 #include "vserver-internal.h"
52 #include "sched_cmd.h"
60 vserver_chcontext(PyObject *self, PyObject *args)
63 struct vc_ctx_caps caps;
64 struct vc_ctx_flags flags;
68 v = VC_VXF_STATE_SETUP;
69 if (!PyArg_ParseTuple(args, "I|K", &ctx, &v))
72 caps.ccaps = ~vc_get_insecureccaps();
74 caps.bcaps = ~vc_get_insecurebcaps();
78 if (vc_get_vx_info(ctx,&vc) != 0) {
79 xid = vc_ctx_create(ctx);
80 if (xid == VC_NOCTX && errno != EEXIST)
81 return PyErr_SetFromErrno(PyExc_OSError);
84 flags.mask = flags.flagword = v;
85 if (vc_set_cflags(ctx, &flags) == -1)
86 return PyErr_SetFromErrno(PyExc_OSError);
88 if (xid == VC_NOCTX && vc_ctx_migrate(ctx) == -1)
89 return PyErr_SetFromErrno(PyExc_OSError);
92 printf("vserver_create xid = %d(%d)\n",xid,ctx);
98 vserver_set_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, "IiL", &xid, &resource, &limits.hard))
112 if (vc_set_rlimit(xid, resource, &limits))
113 ret = PyErr_SetFromErrno(PyExc_OSError);
114 else if (vc_get_rlimit(xid, resource, &limits)==-1)
115 ret = PyErr_SetFromErrno(PyExc_OSError);
117 ret = Py_BuildValue("L",limits.hard);
123 vserver_get_rlimit(PyObject *self, PyObject *args) {
124 struct vc_rlimit limits;
129 limits.min = VC_LIM_KEEP;
130 limits.soft = VC_LIM_KEEP;
131 limits.hard = VC_LIM_KEEP;
133 if (!PyArg_ParseTuple(args, "Ii", &xid, &resource))
137 if (vc_get_rlimit(xid, resource, &limits)==-1)
138 ret = PyErr_SetFromErrno(PyExc_OSError);
140 ret = Py_BuildValue("L",limits.hard);
149 vserver_setsched(PyObject *self, PyObject *args)
152 struct vc_set_sched sched;
153 struct vc_ctx_flags flags;
154 unsigned cpuguaranteed = 0;
156 sched.set_mask = (VC_VXSM_FILL_RATE |
161 if (!PyArg_ParseTuple(args, "I|I|I|I|I|I|I", &xid,
170 flags.flagword = VC_VXF_SCHED_HARD;
171 flags.mask |= VC_VXF_SCHED_HARD;
172 #define VC_VXF_SCHED_SHARE 0x00000800ull
173 if (cpuguaranteed==0) {
174 flags.flagword |= VC_VXF_SCHED_SHARE;
175 flags.mask |= VC_VXF_SCHED_SHARE;
178 if (vc_set_cflags(xid, &flags) == -1)
179 return PyErr_SetFromErrno(PyExc_OSError);
181 if (vc_set_sched(xid, &sched) == -1)
182 return PyErr_SetFromErrno(PyExc_OSError);
191 /* inode vserver commands */
192 #define VCMD_add_dlimit VC_CMD(DLIMIT, 1, 0)
193 #define VCMD_rem_dlimit VC_CMD(DLIMIT, 2, 0)
194 #define VCMD_set_dlimit VC_CMD(DLIMIT, 5, 0)
195 #define VCMD_get_dlimit VC_CMD(DLIMIT, 6, 0)
197 #define CDLIM_UNSET (0ULL)
198 #define CDLIM_INFINITY (~0ULL)
199 #define CDLIM_KEEP (~1ULL)
202 vserver_get_dlimit(PyObject *self, PyObject *args)
207 struct vcmd_ctx_dlimit_v0 data;
210 if (!PyArg_ParseTuple(args, "si", &path,&xid))
213 memset(&data, 0, sizeof(data));
216 r = vserver(VCMD_get_dlimit, xid, &data);
218 res = Py_BuildValue("(i,i,i,i,i)",
225 res = PyErr_SetFromErrno(PyExc_OSError);
233 vserver_set_dlimit(PyObject *self, PyObject *args)
237 struct vcmd_ctx_dlimit_base_v0 init;
238 struct vcmd_ctx_dlimit_v0 data;
241 memset(&data,0,sizeof(data));
242 if (!PyArg_ParseTuple(args, "siiiiii", &path,
254 memset(&init, 0, sizeof(init));
258 r = vserver(VCMD_rem_dlimit, xid, &init);
260 r = vserver(VCMD_add_dlimit, xid, &init);
262 r = vserver(VCMD_set_dlimit, xid, &data);
267 static PyMethodDef methods[] = {
268 { "chcontext", vserver_chcontext, METH_VARARGS,
269 "chcontext to vserver with provided flags" },
270 { "setsched", vserver_setsched, METH_VARARGS,
271 "Change vserver scheduling attributes for given vserver context" },
272 { "setdlimit", vserver_set_dlimit, METH_VARARGS,
273 "Set disk limits for given vserver context" },
274 { "getdlimit", vserver_get_dlimit, METH_VARARGS,
275 "Get disk limits for given vserver context" },
276 { "setrlimit", vserver_set_rlimit, METH_VARARGS,
277 "Set resource limits for given resource of a vserver context" },
278 { "getrlimit", vserver_get_rlimit, METH_VARARGS,
279 "Get resource limits for given resource of a vserver context" },
280 { NULL, NULL, 0, NULL }
284 initvserverimpl(void)
286 Py_InitModule("vserverimpl", methods);