X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=python%2Fvserverimpl.c;h=9048e24e6308647e53e6c63fbb7660d3963075f9;hb=2c6cd25d5479da294af8ff5b4674cab739e87467;hp=cc500e3a32d71b295c3560ddf538de044af1f5e6;hpb=1ebbdce8199d983100040664c6d9171a568b6280;p=util-vserver.git diff --git a/python/vserverimpl.c b/python/vserverimpl.c index cc500e3..9048e24 100644 --- a/python/vserverimpl.c +++ b/python/vserverimpl.c @@ -33,117 +33,45 @@ POSSIBILITY OF SUCH DAMAGE. #include -#include "config.h" -#include "compat.h" - -#include -#include #include -#include -#include -#include -#include -#include -#include #include +#include +#include "config.h" +#include "pathconfig.h" +#include "planetlab.h" +#include "virtual.h" #include "vserver.h" #include "vserver-internal.h" -#include "sched_cmd.h" -#include "virtual.h" /* * context create */ static PyObject * -vserver_create(PyObject *self, PyObject *args) -{ - xid_t ctx, xid; - - if (!PyArg_ParseTuple(args, "I", &ctx)) - return NULL; - - xid = vc_ctx_create(ctx); -#ifdef MEF_DEBUG - printf("vserver_create xid = %d\n",xid); -#endif - if (xid == VC_NOCTX && errno != EEXIST) - return PyErr_SetFromErrno(PyExc_OSError); - return Py_None; -} - -/* - * set flags - */ -static PyObject * -vserver_flags(PyObject *self, PyObject *args) -{ - struct vc_ctx_caps caps; - struct vc_ctx_flags flags; -#ifdef MEF_DEBUG - xid_t xid; -#endif - xid_t ctx; - - caps.ccaps = ~vc_get_insecureccaps(); - caps.cmask = ~0ull; - caps.bcaps = ~vc_get_insecurebcaps(); - caps.bmask = ~0ull; - - flags.flagword = VC_VXF_STATE_SETUP| VC_VXF_INFO_LOCK; - flags.mask = VC_VXF_STATE_SETUP | VC_VXF_INFO_LOCK; - - if (!PyArg_ParseTuple(args, "I", &ctx)) - return NULL; - -#ifdef MEF_DEBUG - xid = vc_get_task_xid(0); - printf("vserver_flags xid = %d, ctx = %d\n",xid,ctx); -#endif - - if (vc_set_ccaps(ctx, &caps) == -1) - return PyErr_SetFromErrno(PyExc_OSError); - -#ifdef MEF_DEBUG - xid = vc_get_task_xid(0); - printf("vserver_flags xid = %d, ctx = %d\n",xid,ctx); -#endif - - if (vc_set_cflags(ctx, &flags) == -1) - return PyErr_SetFromErrno(PyExc_OSError); - -#ifdef MEF_DEBUG - xid = vc_get_task_xid(0); - printf("vserver_flags xid = %d, ctx = %d\n",xid,ctx); -#endif - - - return Py_None; -} - -/* - * enter - */ -static PyObject * -vserver_enter(PyObject *self, PyObject *args) +vserver_chcontext(PyObject *self, PyObject *args) { - xid_t ctx, xid; - if (!PyArg_ParseTuple(args, "I", &ctx)) - return NULL; - - xid = vc_get_task_xid(0); -#ifdef MEF_DEBUG - printf("vserver_enter xid = %d\n",xid); -#endif - if (xid != ctx) { - if (xid!=0) { - errno=EPERM; - return PyErr_SetFromErrno(PyExc_OSError); - } else if (vc_ctx_migrate(ctx) == -1) - return PyErr_SetFromErrno(PyExc_OSError); - } + xid_t ctx; + uint32_t flags = 0; + uint32_t bcaps = ~vc_get_insecurebcaps(); + rspec_t rspec = { 32, VC_VXF_SCHED_FLAGS, -1, -1 }; + PyObject *resources; + PyObject *cpu_share; + + if (!PyArg_ParseTuple(args, "IO|K", &ctx, &resources, &flags)) + return NULL; + if (!PyMapping_Check(resources)) + { + PyErr_SetString(PyExc_TypeError, "invalid resources object"); + return NULL; + } + if ((cpu_share = PyMapping_GetItemString(resources, "nm_cpu_share")) && + (cpu_share = PyNumber_Int(cpu_share))) + rspec.cpu_share = PyInt_AsLong(cpu_share); + + if (pl_chcontext(ctx, flags, bcaps, &rspec)) + PyErr_SetFromErrno(PyExc_OSError); - return Py_None; + return Py_None; } static PyObject * @@ -200,58 +128,28 @@ vserver_get_rlimit(PyObject *self, PyObject *args) { static PyObject * vserver_setsched(PyObject *self, PyObject *args) { - xid_t xid; - struct vc_set_sched sched; - struct vc_ctx_flags flags; - unsigned cpuguaranteed = 0; - - sched.set_mask = (VC_VXSM_FILL_RATE | - VC_VXSM_INTERVAL | - VC_VXSM_TOKENS_MIN | - VC_VXSM_TOKENS_MAX); - - if (!PyArg_ParseTuple(args, "I|I|I|I|I|I|I", &xid, - &sched.fill_rate, - &sched.interval, - &sched.tokens, - &sched.tokens_min, - &sched.tokens_max, - &cpuguaranteed)) - return NULL; + xid_t ctx; + rspec_t rspec = { 32, VC_VXF_SCHED_FLAGS, -1, -1 }; + PyObject *resources; + PyObject *cpu_share; - flags.flagword = VC_VXF_INFO_LOCK; - flags.mask = VC_VXF_INFO_LOCK; - flags.flagword |= VC_VXF_SCHED_HARD; - flags.mask |= VC_VXF_SCHED_HARD; -#define VC_VXF_SCHED_SHARE 0x00000800ull - if (cpuguaranteed==0) { - flags.flagword |= VC_VXF_SCHED_SHARE; - flags.mask |= VC_VXF_SCHED_SHARE; - } - - if (vc_set_cflags(xid, &flags) == -1) - return PyErr_SetFromErrno(PyExc_OSError); - - if (vc_set_sched(xid, &sched) == -1) - return PyErr_SetFromErrno(PyExc_OSError); + if (!PyArg_ParseTuple(args, "IO", &ctx, &resources)) + return NULL; + if (!PyMapping_Check(resources)) + { + PyErr_SetString(PyExc_TypeError, "invalid resources object"); + return NULL; + } + if ((cpu_share = PyMapping_GetItemString(resources, "nm_cpu_share")) && + (cpu_share = PyNumber_Int(cpu_share))) + rspec.cpu_share = PyInt_AsLong(cpu_share); + + if (pl_setsched(ctx, rspec.cpu_share, rspec.cpu_sched_flags)) + PyErr_SetFromErrno(PyExc_OSError); return Py_None; } -/* - * setsched - */ - -/* inode vserver commands */ -#define VCMD_add_dlimit VC_CMD(DLIMIT, 1, 0) -#define VCMD_rem_dlimit VC_CMD(DLIMIT, 2, 0) -#define VCMD_set_dlimit VC_CMD(DLIMIT, 5, 0) -#define VCMD_get_dlimit VC_CMD(DLIMIT, 6, 0) - -#define CDLIM_UNSET (0ULL) -#define CDLIM_INFINITY (~0ULL) -#define CDLIM_KEEP (~1ULL) - static PyObject * vserver_get_dlimit(PyObject *self, PyObject *args) { @@ -290,7 +188,6 @@ vserver_set_dlimit(PyObject *self, PyObject *args) unsigned xid; struct vcmd_ctx_dlimit_base_v0 init; struct vcmd_ctx_dlimit_v0 data; - int r; memset(&data,0,sizeof(data)); if (!PyArg_ParseTuple(args, "siiiiii", &path, @@ -309,26 +206,42 @@ vserver_set_dlimit(PyObject *self, PyObject *args) init.name = path; init.flags = 0; - r = vserver(VCMD_rem_dlimit, xid, &init); - if (r<0){} - r = vserver(VCMD_add_dlimit, xid, &init); - if (r<0){} - r = vserver(VCMD_set_dlimit, xid, &data); - if (r<0){} + if ((vserver(VCMD_add_dlimit, xid, &init) && errno != EEXIST) || + vserver(VCMD_set_dlimit, xid, &data)) + return PyErr_SetFromErrno(PyExc_OSError); + return Py_None; } +static PyObject * +vserver_unset_dlimit(PyObject *self, PyObject *args) +{ + char *path; + unsigned xid; + struct vcmd_ctx_dlimit_base_v0 init; + + if (!PyArg_ParseTuple(args, "si", &path, &xid)) + return NULL; + + memset(&init, 0, sizeof(init)); + init.name = path; + init.flags = 0; + + if (vserver(VCMD_rem_dlimit, xid, &init) && errno != ESRCH) + return PyErr_SetFromErrno(PyExc_OSError); + + return Py_None; +} + static PyMethodDef methods[] = { - { "create", vserver_create, METH_VARARGS, - "Create a new vserver context" }, - { "flags", vserver_flags, METH_VARARGS, - "Set the default flags and caps" }, - { "enter", vserver_enter, METH_VARARGS, - "Enter the vserver context" }, + { "chcontext", vserver_chcontext, METH_VARARGS, + "chcontext to vserver with provided flags" }, { "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, @@ -341,5 +254,17 @@ static PyMethodDef methods[] = { 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)CDLIM_KEEP); + PyModule_AddIntConstant(mod, "DLIMIT_INF", (int)CDLIM_INFINITY); }