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"
59 vserver_chcontext(PyObject *self, PyObject *args)
62 unsigned caps_remove = 0;
64 if (!PyArg_ParseTuple(args, "I|I", &xid, &caps_remove))
67 if (vc_new_s_context(xid, caps_remove, 0) < 0)
68 return PyErr_SetFromErrno(PyExc_OSError);
74 __vserver_rlimit(PyObject *self, PyObject *args, int resource) {
75 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, "iL", &xid, &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);
99 vserver_memlimit(PyObject *self, PyObject *args) {
100 return __vserver_rlimit(self,args,5);
104 vserver_tasklimit(PyObject *self, PyObject *args) {
105 return __vserver_rlimit(self,args,6);
114 vserver_setsched(PyObject *self, PyObject *args)
117 struct vc_set_sched sched;
119 sched.set_mask = (VC_VXSM_FILL_RATE |
124 if (!PyArg_ParseTuple(args, "I|I|I|I|I", &xid,
131 if (vc_set_sched(xid, &sched) == -1)
132 return PyErr_SetFromErrno(PyExc_OSError);
141 /* inode vserver commands */
142 #define VCMD_add_dlimit VC_CMD(DLIMIT, 1, 0)
143 #define VCMD_rem_dlimit VC_CMD(DLIMIT, 2, 0)
144 #define VCMD_set_dlimit VC_CMD(DLIMIT, 5, 0)
145 #define VCMD_get_dlimit VC_CMD(DLIMIT, 6, 0)
147 struct vcmd_ctx_dlimit_base_v0 {
152 struct vcmd_ctx_dlimit_v0 {
154 uint32_t space_used; /* used space in kbytes */
155 uint32_t space_total; /* maximum space in kbytes */
156 uint32_t inodes_used; /* used inodes */
157 uint32_t inodes_total; /* maximum inodes */
158 uint32_t reserved; /* reserved for root in % */
162 #define CDLIM_UNSET (0ULL)
163 #define CDLIM_INFINITY (~0ULL)
164 #define CDLIM_KEEP (~1ULL)
167 vserver_dlimit(PyObject *self, PyObject *args)
172 struct vcmd_ctx_dlimit_base_v0 init;
173 struct vcmd_ctx_dlimit_v0 data;
176 memset(&data,0,sizeof(data));
177 if (!PyArg_ParseTuple(args, "siiiiii", &path,
192 r = vserver(VCMD_rem_dlimit, xid, &init);
194 r = vserver(VCMD_add_dlimit, xid, &init);
196 r = vserver(VCMD_set_dlimit, xid, &data);
199 memset(&data, 0, sizeof(data));
202 r = vserver(VCMD_get_dlimit, xid, &data);
204 res = Py_BuildValue("(i,i,i,i,i)",
211 res = PyErr_SetFromErrno(PyExc_OSError);
217 static PyMethodDef methods[] = {
218 { "chcontext", vserver_chcontext, METH_VARARGS,
219 "Change to the given vserver context" },
220 { "setsched", vserver_setsched, METH_VARARGS,
221 "Change vserver scheduling attributes for given vserver context" },
222 { "dlimit", vserver_dlimit, METH_VARARGS,
223 "Set disk limits for given vserver context" },
224 { "tasklimit", vserver_tasklimit, METH_VARARGS,
225 "Set task limits for given vserver context" },
226 { "memlimit", vserver_memlimit, METH_VARARGS,
227 "Set memory limits for given vserver context" },
228 { NULL, NULL, 0, NULL }
232 initvserverimpl(void)
234 Py_InitModule("vserverimpl", methods);