X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=python%2Fvserverimpl.c;h=17d1482a36672451d93471de0c7059dbc48e3acc;hb=df6666ed5ab57b500cdd0a0f3ef610025fa10b4f;hp=d5f018dd6b9f9b1bda1ad964842626d4b3083d95;hpb=6bbeb3e9837789f7813f1a38d39ac2e4df3a570b;p=util-vserver.git

diff --git a/python/vserverimpl.c b/python/vserverimpl.c
index d5f018d..17d1482 100644
--- a/python/vserverimpl.c
+++ b/python/vserverimpl.c
@@ -4,17 +4,17 @@ Redistribution and use in source and binary forms, with or without
 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
@@ -35,13 +35,20 @@ POSSIBILITY OF SUCH DAMAGE.
 
 #include <errno.h>
 #include <stdint.h>
+#include <sys/resource.h>
+#include <sys/types.h>
+#include <sys/stat.h>
 #include <unistd.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <ifaddrs.h>
+#include <stddef.h>
 
 #include "config.h"
 #include "pathconfig.h"
-#include "planetlab.h"
 #include "virtual.h"
 #include "vserver.h"
+#include "planetlab.h"
 #include "vserver-internal.h"
 
 #define NONE  ({ Py_INCREF(Py_None); Py_None; })
@@ -52,18 +59,18 @@ POSSIBILITY OF SUCH DAMAGE.
 static PyObject *
 vserver_chcontext(PyObject *self, PyObject *args)
 {
-  int  result;
+  int  ctx_is_new;
   xid_t  ctx;
-  uint32_t  flags = 0;
-  uint32_t  bcaps = ~vc_get_insecurebcaps();
+  uint_least64_t bcaps = 0;
 
-  if (!PyArg_ParseTuple(args, "I|K", &ctx, &flags))
+  if (!PyArg_ParseTuple(args, "I|K", &ctx, &bcaps))
     return NULL;
+  bcaps |= ~vc_get_insecurebcaps();
 
-  if ((result = pl_chcontext(ctx, flags, bcaps)) < 0)
+  if ((ctx_is_new = pl_chcontext(ctx, bcaps, 0)) < 0)
     return PyErr_SetFromErrno(PyExc_OSError);
 
-  return PyBool_FromLong(result);
+  return PyBool_FromLong(ctx_is_new);
 }
 
 static PyObject *
@@ -81,49 +88,95 @@ vserver_setup_done(PyObject *self, PyObject *args)
 }
 
 static PyObject *
-vserver_set_rlimit(PyObject *self, PyObject *args) {
-	struct vc_rlimit limits;
-	xid_t xid;
-	int resource;
-	PyObject *ret;
-
-	limits.min = VC_LIM_KEEP;
-	limits.soft = VC_LIM_KEEP;
-	limits.hard = VC_LIM_KEEP;
-
-	if (!PyArg_ParseTuple(args, "IiL", &xid, &resource, &limits.hard))
-		return NULL;
-
-	if (vc_set_rlimit(xid, resource, &limits)) 
-		ret = PyErr_SetFromErrno(PyExc_OSError);
-	else if (vc_get_rlimit(xid, resource, &limits)==-1)
-		ret = PyErr_SetFromErrno(PyExc_OSError);
-	else
-		ret = Py_BuildValue("L",limits.hard);
-
-	return ret;
+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) {
-	struct vc_rlimit limits;
-	xid_t xid;
-	int resource;
-	PyObject *ret;
+  xid_t xid;
+  int resource;
+  PyObject *ret;
 
-	limits.min = VC_LIM_KEEP;
-	limits.soft = VC_LIM_KEEP;
-	limits.hard = VC_LIM_KEEP;
+  if (!PyArg_ParseTuple(args, "Ii", &xid, &resource))
+    ret = NULL;
+  else
+    ret = __vserver_get_rlimit(xid, resource);
 
-	if (!PyArg_ParseTuple(args, "Ii", &xid, &resource))
-		return NULL;
+  return ret;
+}
 
-	if (vc_get_rlimit(xid, resource, &limits)==-1)
-		ret = PyErr_SetFromErrno(PyExc_OSError);
-	else
-		ret = Py_BuildValue("L",limits.hard);
+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;
 
-	return ret;
+  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;
 }
 
 /*
@@ -150,64 +203,54 @@ vserver_setsched(PyObject *self, PyObject *args)
 static PyObject *
 vserver_get_dlimit(PyObject *self, PyObject *args)
 {
-	PyObject *res;
-	char* path;
-	unsigned xid;
-	struct vcmd_ctx_dlimit_v0 data;
-	int r;
-
-	if (!PyArg_ParseTuple(args, "si", &path,&xid))
-		return NULL;
-
-	memset(&data, 0, sizeof(data));
-	data.name = path;
-	data.flags = 0;
-	r = vserver(VCMD_get_dlimit, xid, &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);
-	}
+  PyObject *res;
+  char* path;
+  unsigned xid;
+  struct vc_ctx_dlimit data;
+  int r;
+
+  if (!PyArg_ParseTuple(args, "si", &path,&xid))
+    return NULL;
 
-	return res;
+  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 vcmd_ctx_dlimit_base_v0 init;
-	struct vcmd_ctx_dlimit_v0 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;
-
-	data.name = path;
-	data.flags = 0;
-
-	memset(&init, 0, sizeof(init));
-	init.name = path;
-	init.flags = 0;
-
-	if ((vserver(VCMD_add_dlimit, xid, &init) && errno != EEXIST) ||
-            vserver(VCMD_set_dlimit, xid, &data))
-          return PyErr_SetFromErrno(PyExc_OSError);
-
-	return NONE;	
+  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 *
@@ -215,16 +258,11 @@ 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)
+  if (vc_rem_dlimit(path, xid, 0) && errno != ESRCH)
     return PyErr_SetFromErrno(PyExc_OSError);
 
   return NONE;	
@@ -233,8 +271,16 @@ vserver_unset_dlimit(PyObject *self, PyObject *args)
 static PyObject *
 vserver_killall(PyObject *self, PyObject *args)
 {
-  xid_t  ctx;
-  int  sig;
+  xid_t	ctx;
+  int	sig;
+  struct vc_ctx_flags cflags = {
+    .flagword = 0,
+    .mask = VC_VXF_PERSISTENT
+  };
+  struct vc_net_flags nflags = {
+    .flagword = 0,
+    .mask = VC_NXF_PERSISTENT
+  };
 
   if (!PyArg_ParseTuple(args, "Ii", &ctx, &sig))
     return NULL;
@@ -242,6 +288,225 @@ vserver_killall(PyObject *self, PyObject *args)
   if (vc_ctx_kill(ctx, 0, sig) && errno != ESRCH)
     return PyErr_SetFromErrno(PyExc_OSError);
 
+  if (vc_set_cflags(ctx, &cflags) && errno != ESRCH)
+    return PyErr_SetFromErrno(PyExc_OSError);
+
+  if (vc_set_nflags(ctx, &nflags) && errno != ESRCH)
+    return PyErr_SetFromErrno(PyExc_OSError);
+
+  return NONE;
+}
+
+static PyObject *
+vserver_set_bcaps(PyObject *self, PyObject *args)
+{
+  xid_t ctx;
+  struct vc_ctx_caps caps;
+
+  if (!PyArg_ParseTuple(args, "IK", &ctx, &caps.bcaps))
+    return NULL;
+
+  caps.bmask = vc_get_insecurebcaps();
+  caps.cmask = caps.ccaps = 0;
+  if (vc_set_ccaps(ctx, &caps) == -1 && errno != ESRCH)
+    return PyErr_SetFromErrno(PyExc_OSError);
+
+  return NONE;
+}
+
+static PyObject *
+vserver_text2bcaps(PyObject *self, PyObject *args)
+{
+  struct vc_ctx_caps caps = { .bcaps = 0 };
+  const char *list;
+  int len;
+  struct vc_err_listparser err;
+
+  if (!PyArg_ParseTuple(args, "s#", &list, &len))
+    return NULL;
+
+  vc_list2bcap(list, len, &err, &caps);
+
+  return Py_BuildValue("K", caps.bcaps);
+}
+
+static PyObject *
+vserver_get_bcaps(PyObject *self, PyObject *args)
+{
+  xid_t ctx;
+  struct vc_ctx_caps caps;
+
+  if (!PyArg_ParseTuple(args, "I", &ctx))
+    return NULL;
+
+  if (vc_get_ccaps(ctx, &caps) == -1) {
+    if (errno != -ESRCH)
+      return PyErr_SetFromErrno(PyExc_OSError);
+    else
+      caps.bcaps = 0;
+  }
+
+  return Py_BuildValue("K", caps.bcaps & vc_get_insecurebcaps());
+}
+
+static PyObject *
+vserver_bcaps2text(PyObject *self, PyObject *args)
+{
+  struct vc_ctx_caps caps = { .bcaps = 0 };
+  PyObject *list;
+  const char *cap;
+
+  if (!PyArg_ParseTuple(args, "K", &caps.bcaps))
+    return NULL;
+
+  list = PyString_FromString("");
+
+  while ((cap = vc_lobcap2text(&caps.bcaps)) != NULL) {
+    if (list == NULL)
+      break;
+    PyString_ConcatAndDel(&list, PyString_FromFormat(
+			  (PyString_Size(list) > 0 ? ",CAP_%s" : "CAP_%s" ),
+			  cap));
+  }
+
+  return list;
+}
+
+static const struct AF_to_vcNET {
+  int af;
+  vc_net_nx_type vc_net;
+  size_t len;
+  size_t offset;
+} converter[] = {
+  { AF_INET,  vcNET_IPV4, sizeof(struct in_addr),  offsetof(struct sockaddr_in,  sin_addr.s_addr) },
+  { AF_INET6, vcNET_IPV6, sizeof(struct in6_addr), offsetof(struct sockaddr_in6, sin6_addr.s6_addr) },
+  { 0, 0 }
+};
+
+static inline int
+convert_address(const char *str, vc_net_nx_type *type, void *dst)
+{
+  const struct AF_to_vcNET *i;
+  for (i = converter; i->af; i++) {
+    if (inet_pton(i->af, str, dst)) {
+      *type = i->vc_net;
+      return 0;
+    }
+  }
+  return -1;
+}
+
+static int
+get_mask(struct vc_net_nx *addr)
+{
+  const struct AF_to_vcNET *i;
+  struct ifaddrs *head, *ifa;
+  int ret = 0;
+
+  for (i = converter; i->af; i++) {
+    if (i->vc_net == addr->type)
+      break;
+  }
+  if (!i) {
+    errno = EINVAL;
+    return -1;
+  }
+
+  if (getifaddrs(&head) == -1)
+    return -1;
+  for (ifa = head; ifa; ifa = ifa->ifa_next) {
+    if (ifa->ifa_addr->sa_family == i->af &&
+        memcmp((char *) ifa->ifa_addr + i->offset, addr->ip, i->len) == 0) {
+      switch (addr->type) {
+      case vcNET_IPV4:
+	memcpy(&addr->mask[0], ifa->ifa_netmask + i->offset, i->len);
+	break;
+      case vcNET_IPV6: {
+	uint32_t *m = ((struct sockaddr_in6 *) ifa->ifa_netmask)->sin6_addr.s6_addr32;
+	/* optimization for the common case */
+	if ((m[1] & 1) == 1 && (m[2] & 0x80000000) == 0)
+	  addr->mask[0] = 64;
+	else {
+	  addr->mask[0] = 0;
+	  while (m[addr->mask[0] / 32] & (addr->mask[0] % 32))
+	    addr->mask[0]++;
+	}
+	break;
+      }
+      ret = 1;
+      break;
+    }
+  }
+  /* no match, use a default */
+  if (!ret) {
+    switch (addr->type) {
+    case vcNET_IPV4:	addr->mask[0] = htonl(0xffffff00); break;
+    case vcNET_IPV6:	addr->mask[0] = 64; break;
+    default:		addr->mask[0] = 0; break;
+    }
+  }
+  freeifaddrs(head);
+  return ret;
+}
+
+/* XXX These two functions are really similar */
+static PyObject *
+vserver_net_add(PyObject *self, PyObject *args)
+{
+  struct vc_net_nx addr;
+  nid_t nid;
+  const char *ip;
+
+  if (!PyArg_ParseTuple(args, "Is", &nid, &ip))
+    return NULL;
+
+  if (convert_address(ip, &addr.type, &addr.ip) == -1)
+    return PyErr_Format(PyExc_ValueError, "%s is not a valid IP address", ip);
+
+  switch (get_mask(&addr)) {
+  case -1:
+    return PyErr_SetFromErrno(PyExc_OSError);
+  case 0:
+    /* XXX error here? */
+    break;
+  }
+  addr.count = 1;
+
+  if (vc_net_add(nid, &addr) == -1 && errno != ESRCH)
+    return PyErr_SetFromErrno(PyExc_OSError);
+
+  return NONE;
+}
+
+static PyObject *
+vserver_net_remove(PyObject *self, PyObject *args)
+{
+  struct vc_net_nx addr;
+  nid_t nid;
+  const char *ip;
+
+  if (!PyArg_ParseTuple(args, "Is", &nid, &ip))
+    return NULL;
+
+  if (strcmp(ip, "all") == 0)
+    addr.type = vcNET_ANY;
+  else if (strcmp(ip, "all4") == 0)
+    addr.type = vcNET_IPV4A;
+  else if (strcmp(ip, "all6") == 0)
+    addr.type = vcNET_IPV6A;
+  else
+    if (convert_address(ip, &addr.type, &addr.ip) == -1)
+      return PyErr_Format(PyExc_ValueError, "%s is not a valid IP address", ip);
+
+  switch (get_mask(&addr)) {
+  case -1:
+    return PyErr_SetFromErrno(PyExc_OSError);
+  }
+  addr.count = 1;
+
+  if (vc_net_remove(nid, &addr) == -1 && errno != ESRCH)
+    return PyErr_SetFromErrno(PyExc_OSError);
+
   return NONE;
 }
 
@@ -264,6 +529,20 @@ static PyMethodDef  methods[] = {
     "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"},
+  { "setbcaps", vserver_set_bcaps, METH_VARARGS,
+    "Set POSIX capabilities of a vserver context" },
+  { "getbcaps", vserver_get_bcaps, METH_VARARGS,
+    "Get POSIX capabilities of a vserver context" },
+  { "text2bcaps", vserver_text2bcaps, METH_VARARGS,
+    "Translate a string of capabilities to a bitmap" },
+  { "bcaps2text", vserver_bcaps2text, METH_VARARGS,
+    "Translate a capability-bitmap into a string" },
+  { "netadd", vserver_net_add, METH_VARARGS,
+    "Assign an IP address to a context" },
+  { "netremove", vserver_net_remove, METH_VARARGS,
+    "Remove IP address(es) from a context" },
   { NULL, NULL, 0, NULL }
 };
 
@@ -281,8 +560,25 @@ initvserverimpl(void)
   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);
+  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,