modification, are permitted provided that the following conditions
are met:
- * Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
+* Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
- * Redistributions in binary form must reproduce the above
- copyright notice, this list of conditions and the following
- disclaimer in the documentation and/or other materials provided
- with the distribution.
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following
+disclaimer in the documentation and/or other materials provided
+with the distribution.
- * Neither the name of the copyright holder nor the names of its
- contributors may be used to endorse or promote products derived
- from this software without specific prior written permission.
+* Neither the name of the copyright holder nor the names of its
+contributors may be used to endorse or promote products derived
+from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
#include <Python.h>
-#include "compat.h"
+#include <errno.h>
+#include <stdint.h>
+#include <sys/resource.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+#include "config.h"
+#include "pathconfig.h"
+#include "virtual.h"
#include "vserver.h"
+#include "planetlab.h"
+#include "vserver-internal.h"
+
+#define NONE ({ Py_INCREF(Py_None); Py_None; })
+/*
+ * context create
+ */
static PyObject *
vserver_chcontext(PyObject *self, PyObject *args)
{
+ int ctx_is_new;
+ xid_t ctx;
+ uint_least64_t bcaps = ~vc_get_insecurebcaps();
+
+ if (!PyArg_ParseTuple(args, "I", &ctx))
+ return NULL;
+
+ if ((ctx_is_new = pl_chcontext(ctx, bcaps, 0)) < 0)
+ return PyErr_SetFromErrno(PyExc_OSError);
+
+ return PyBool_FromLong(ctx_is_new);
+}
+
+static PyObject *
+vserver_setup_done(PyObject *self, PyObject *args)
+{
+ xid_t ctx;
+
+ if (!PyArg_ParseTuple(args, "I", &ctx))
+ return NULL;
+
+ if (pl_setup_done(ctx) < 0)
+ return PyErr_SetFromErrno(PyExc_OSError);
+
+ return NONE;
+}
+
+static PyObject *
+vserver_isrunning(PyObject *self, PyObject *args)
+{
+ xid_t ctx;
+ PyObject *ret;
+ struct stat statbuf;
+ char fname[64];
+
+ if (!PyArg_ParseTuple(args, "I", &ctx))
+ return NULL;
+
+ sprintf(fname,"/proc/virtual/%d", ctx);
+
+ if(stat(&fname[0],&statbuf)==0)
+ ret = PyBool_FromLong(1);
+ else
+ ret = PyBool_FromLong(0);
+
+ return ret;
+}
+
+static PyObject *
+__vserver_get_rlimit(xid_t xid, int resource) {
+ struct vc_rlimit limits;
+ PyObject *ret;
+
+ errno = 0;
+ if (vc_get_rlimit(xid, resource, &limits)==-1)
+ ret = PyErr_SetFromErrno(PyExc_OSError);
+ else
+ ret = Py_BuildValue("LLL",limits.hard, limits.soft, limits.min);
+
+ return ret;
+}
+
+static PyObject *
+vserver_get_rlimit(PyObject *self, PyObject *args) {
+ xid_t xid;
+ int resource;
+ PyObject *ret;
+
+ if (!PyArg_ParseTuple(args, "Ii", &xid, &resource))
+ ret = NULL;
+ else
+ ret = __vserver_get_rlimit(xid, resource);
+
+ return ret;
+}
+
+static PyObject *
+vserver_set_rlimit(PyObject *self, PyObject *args) {
+ struct vc_rlimit limits;
+ struct rlimit lim;
+ xid_t xid;
+ int resource, lresource;
+ PyObject *ret;
+
+ limits.min = VC_LIM_KEEP;
+ limits.soft = VC_LIM_KEEP;
+ limits.hard = VC_LIM_KEEP;
+
+ if (!PyArg_ParseTuple(args, "IiLLL", &xid, &resource, &limits.hard, &limits.soft, &limits.min))
+ return NULL;
+
+ lresource = resource;
+ switch (resource) {
+ case VC_VLIMIT_NSOCK:
+ case VC_VLIMIT_ANON:
+ case VC_VLIMIT_SHMEM:
+ goto do_vc_set_rlimit;
+ case VC_VLIMIT_OPENFD:
+ lresource = RLIMIT_NOFILE;
+ break;
+ default:
+ break;
+ }
+
+ getrlimit(lresource,&lim);
+ if (adjust_lim(&limits,&lim)) {
+ setrlimit(lresource, &lim);
+ }
+
+ do_vc_set_rlimit:
+ errno = 0;
+ if (vc_set_rlimit(xid, resource, &limits)==-1)
+ ret = PyErr_SetFromErrno(PyExc_OSError);
+ else
+ ret = __vserver_get_rlimit(xid, resource);
+
+ return ret;
+}
+
+/*
+ * setsched
+ */
+static PyObject *
+vserver_setsched(PyObject *self, PyObject *args)
+{
+ xid_t ctx;
+ uint32_t cpu_share;
+ uint32_t cpu_sched_flags = VC_VXF_SCHED_FLAGS;
+
+ if (!PyArg_ParseTuple(args, "II|I", &ctx, &cpu_share, &cpu_sched_flags))
+ return NULL;
+
+ /* ESRCH indicates that there are no processes in the context */
+ if (pl_setsched(ctx, cpu_share, cpu_sched_flags) &&
+ errno != ESRCH)
+ return PyErr_SetFromErrno(PyExc_OSError);
+
+ return NONE;
+}
+
+static PyObject *
+vserver_get_dlimit(PyObject *self, PyObject *args)
+{
+ PyObject *res;
+ char* path;
+ unsigned xid;
+ struct vc_ctx_dlimit data;
+ int r;
+
+ if (!PyArg_ParseTuple(args, "si", &path,&xid))
+ return NULL;
+
+ memset(&data, 0, sizeof(data));
+ r = vc_get_dlimit(path, xid, 0, &data);
+ if (r>=0) {
+ res = Py_BuildValue("(i,i,i,i,i)",
+ data.space_used,
+ data.space_total,
+ data.inodes_used,
+ data.inodes_total,
+ data.reserved);
+ } else {
+ res = PyErr_SetFromErrno(PyExc_OSError);
+ }
+
+ return res;
+}
+
+
+static PyObject *
+vserver_set_dlimit(PyObject *self, PyObject *args)
+{
+ char* path;
+ unsigned xid;
+ struct vc_ctx_dlimit data;
+
+ memset(&data,0,sizeof(data));
+ if (!PyArg_ParseTuple(args, "siiiiii", &path,
+ &xid,
+ &data.space_used,
+ &data.space_total,
+ &data.inodes_used,
+ &data.inodes_total,
+ &data.reserved))
+ return NULL;
+
+ if ((vc_add_dlimit(path, xid, 0) && errno != EEXIST) ||
+ vc_set_dlimit(path, xid, 0, &data))
+ return PyErr_SetFromErrno(PyExc_OSError);
+
+ return NONE;
+}
+
+static PyObject *
+vserver_unset_dlimit(PyObject *self, PyObject *args)
+{
+ char *path;
unsigned xid;
- unsigned caps_remove = 0;
- if (!PyArg_ParseTuple(args, "I|I", &xid, &caps_remove))
+ if (!PyArg_ParseTuple(args, "si", &path, &xid))
return NULL;
- if (vc_new_s_context(xid, caps_remove, 0) < 0)
+ if (vc_rem_dlimit(path, xid, 0) && errno != ESRCH)
return PyErr_SetFromErrno(PyExc_OSError);
- return Py_None;
+ return NONE;
+}
+
+static PyObject *
+vserver_killall(PyObject *self, PyObject *args)
+{
+ xid_t ctx;
+ int sig;
+
+ if (!PyArg_ParseTuple(args, "Ii", &ctx, &sig))
+ return NULL;
+
+ if (vc_ctx_kill(ctx, 0, sig) && errno != ESRCH)
+ return PyErr_SetFromErrno(PyExc_OSError);
+
+ return NONE;
}
static PyMethodDef methods[] = {
{ "chcontext", vserver_chcontext, METH_VARARGS,
- "Change to the given vserver context" },
+ "chcontext to vserver with provided flags" },
+ { "setup_done", vserver_setup_done, METH_VARARGS,
+ "Release vserver setup lock" },
+ { "setsched", vserver_setsched, METH_VARARGS,
+ "Change vserver scheduling attributes for given vserver context" },
+ { "setdlimit", vserver_set_dlimit, METH_VARARGS,
+ "Set disk limits for given vserver context" },
+ { "unsetdlimit", vserver_unset_dlimit, METH_VARARGS,
+ "Remove disk limits for given vserver context" },
+ { "getdlimit", vserver_get_dlimit, METH_VARARGS,
+ "Get disk limits for given vserver context" },
+ { "setrlimit", vserver_set_rlimit, METH_VARARGS,
+ "Set resource limits for given resource of a vserver context" },
+ { "getrlimit", vserver_get_rlimit, METH_VARARGS,
+ "Get resource limits for given resource of a vserver context" },
+ { "killall", vserver_killall, METH_VARARGS,
+ "Send signal to all processes in vserver context" },
+ { "isrunning", vserver_isrunning, METH_VARARGS,
+ "Check if vserver is running"},
{ NULL, NULL, 0, NULL }
};
PyMODINIT_FUNC
initvserverimpl(void)
{
- Py_InitModule("vserverimpl", methods);
+ PyObject *mod;
+
+ mod = Py_InitModule("vserverimpl", methods);
+
+ /* export the set of 'safe' capabilities */
+ PyModule_AddIntConstant(mod, "CAP_SAFE", ~vc_get_insecurebcaps());
+
+ /* export the default vserver directory */
+ PyModule_AddStringConstant(mod, "VSERVER_BASEDIR", DEFAULT_VSERVERDIR);
+
+ /* export limit-related constants */
+ PyModule_AddIntConstant(mod, "DLIMIT_KEEP", (int)VC_CDLIM_KEEP);
+ PyModule_AddIntConstant(mod, "DLIMIT_INF", (int)VC_CDLIM_INFINITY);
+ PyModule_AddIntConstant(mod, "VC_LIM_KEEP", (int)VC_LIM_KEEP);
+
+ PyModule_AddIntConstant(mod, "RLIMIT_CPU", (int)RLIMIT_CPU);
+ PyModule_AddIntConstant(mod, "RLIMIT_RSS", (int)RLIMIT_RSS);
+ PyModule_AddIntConstant(mod, "RLIMIT_NPROC", (int)RLIMIT_NPROC);
+ PyModule_AddIntConstant(mod, "RLIMIT_NOFILE", (int)RLIMIT_NOFILE);
+ PyModule_AddIntConstant(mod, "RLIMIT_MEMLOCK", (int)RLIMIT_MEMLOCK);
+ PyModule_AddIntConstant(mod, "RLIMIT_AS", (int)RLIMIT_AS);
+ PyModule_AddIntConstant(mod, "RLIMIT_LOCKS", (int)RLIMIT_LOCKS);
+
+ PyModule_AddIntConstant(mod, "RLIMIT_SIGPENDING", (int)RLIMIT_SIGPENDING);
+ PyModule_AddIntConstant(mod, "RLIMIT_MSGQUEUE", (int)RLIMIT_MSGQUEUE);
+
+ PyModule_AddIntConstant(mod, "VLIMIT_NSOCK", (int)VC_VLIMIT_NSOCK);
+ PyModule_AddIntConstant(mod, "VLIMIT_OPENFD", (int)VC_VLIMIT_OPENFD);
+ PyModule_AddIntConstant(mod, "VLIMIT_ANON", (int)VC_VLIMIT_ANON);
+ PyModule_AddIntConstant(mod, "VLIMIT_SHMEM", (int)VC_VLIMIT_SHMEM);
+
+ /* scheduler flags */
+ PyModule_AddIntConstant(mod,
+ "VS_SCHED_CPU_GUARANTEED",
+ VS_SCHED_CPU_GUARANTEED);
}
git://git.onelab.eu / util-vserver.git / blobdiff