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https://github.com/xen-project/xen.git
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Manuel Bouyer
a430151c73
Switch NetBSD to QEMU_XEN. All 3 versions of libxl__default_device_model() now return LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN, so remove it and just set b_info->device_model_version to LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN in libxl__domain_build_info_setdefault(). Signed-off-by: Manuel Bouyer <bouyer@netbsd.org> Reviewed-by: Roger Pau Monné <roger.pau@citrix.com>
248 lines
7.3 KiB
C
248 lines
7.3 KiB
C
/*
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* Copyright (C) 2014
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* Author Roger Pau Monne <roger.pau@entel.upc.edu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; version 2.1 only. with the special
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* exception on linking described in file LICENSE.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*/
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#include "libxl_osdeps.h" /* must come before any other headers */
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#include "libxl_internal.h"
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int libxl__try_phy_backend(mode_t st_mode)
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{
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if (S_ISREG(st_mode) || S_ISBLK(st_mode) || S_ISCHR(st_mode))
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return 1;
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return 0;
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}
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char *libxl__devid_to_localdev(libxl__gc *gc, int devid)
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{
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/* This translation table has been copied from the FreeBSD blkfront code. */
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const static struct vdev_info {
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int major;
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int shift;
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int base;
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const char *name;
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} info[] = {
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{3, 6, 0, "ada"}, /* ide0 */
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{22, 6, 2, "ada"}, /* ide1 */
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{33, 6, 4, "ada"}, /* ide2 */
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{34, 6, 6, "ada"}, /* ide3 */
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{56, 6, 8, "ada"}, /* ide4 */
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{57, 6, 10, "ada"}, /* ide5 */
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{88, 6, 12, "ada"}, /* ide6 */
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{89, 6, 14, "ada"}, /* ide7 */
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{90, 6, 16, "ada"}, /* ide8 */
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{91, 6, 18, "ada"}, /* ide9 */
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{8, 4, 0, "da"}, /* scsi disk0 */
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{65, 4, 16, "da"}, /* scsi disk1 */
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{66, 4, 32, "da"}, /* scsi disk2 */
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{67, 4, 48, "da"}, /* scsi disk3 */
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{68, 4, 64, "da"}, /* scsi disk4 */
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{69, 4, 80, "da"}, /* scsi disk5 */
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{70, 4, 96, "da"}, /* scsi disk6 */
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{71, 4, 112, "da"}, /* scsi disk7 */
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{128, 4, 128, "da"}, /* scsi disk8 */
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{129, 4, 144, "da"}, /* scsi disk9 */
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{130, 4, 160, "da"}, /* scsi disk10 */
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{131, 4, 176, "da"}, /* scsi disk11 */
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{132, 4, 192, "da"}, /* scsi disk12 */
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{133, 4, 208, "da"}, /* scsi disk13 */
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{134, 4, 224, "da"}, /* scsi disk14 */
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{135, 4, 240, "da"}, /* scsi disk15 */
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{202, 4, 0, "xbd"}, /* xbd */
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{0, 0, 0, NULL},
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};
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int major = devid >> 8;
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int minor = devid & 0xff;
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int i;
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if (devid & (1 << 28))
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return GCSPRINTF("%s%d", "xbd", (devid & ((1 << 28) - 1)) >> 8);
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for (i = 0; info[i].major; i++)
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if (info[i].major == major)
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return GCSPRINTF("%s%d", info[i].name,
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info[i].base + (minor >> info[i].shift));
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return GCSPRINTF("%s%d", "xbd", minor >> 4);
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}
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/* Hotplug scripts caller functions */
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static int libxl__hotplug_env_nic(libxl__gc *gc, libxl__device *dev, char ***env,
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int num_exec)
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{
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int nr = 0;
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const int arraysize = 5;
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libxl_nic_type type;
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assert(dev->backend_kind == LIBXL__DEVICE_KIND_VIF);
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/*
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* On the first pass the PV interface is added to the bridge,
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* on the second pass the tap interface will also be added.
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*/
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type = num_exec == 0 ? LIBXL_NIC_TYPE_VIF : LIBXL_NIC_TYPE_VIF_IOEMU;
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GCNEW_ARRAY(*env, arraysize);
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(*env)[nr++] = "iface_dev";
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(*env)[nr++] = (char *) libxl__device_nic_devname(gc, dev->domid,
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dev->devid, type);
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(*env)[nr++] = "emulated";
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(*env)[nr++] = type == LIBXL_NIC_TYPE_VIF_IOEMU ? "1" : "0";
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(*env)[nr++] = NULL;
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assert(nr == arraysize);
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return 0;
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}
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static int libxl__hotplug_nic(libxl__gc *gc, libxl__device *dev,
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char ***args, char ***env,
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libxl__device_action action,
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int num_exec)
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{
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libxl_nic_type nictype;
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char *be_path = libxl__device_backend_path(gc, dev);
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char *script;
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int nr = 0, rc;
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rc = libxl__nic_type(gc, dev, &nictype);
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if (rc) {
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LOGD(ERROR, dev->domid, "error when fetching nic type");
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rc = ERROR_FAIL;
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goto out;
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}
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/*
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* For PV domains only one pass is needed (because there's no emulated
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* interface). For HVM domains two passes are needed in order to add
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* both the PV and the tap interfaces to the bridge.
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*/
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if (nictype == LIBXL_NIC_TYPE_VIF && num_exec != 0) {
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rc = 0;
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goto out;
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}
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rc = libxl__hotplug_env_nic(gc, dev, env, num_exec);
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if (rc)
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goto out;
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script = libxl__xs_read(gc, XBT_NULL,
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GCSPRINTF("%s/%s", be_path, "script"));
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if (!script) {
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LOGEVD(ERROR, errno, dev->domid,
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"unable to read script from %s", be_path);
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rc = ERROR_FAIL;
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goto out;
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}
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const int arraysize = 4;
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GCNEW_ARRAY(*args, arraysize);
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(*args)[nr++] = script;
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(*args)[nr++] = be_path;
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(*args)[nr++] = (char *) libxl__device_action_to_string(action);
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(*args)[nr++] = NULL;
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assert(nr == arraysize);
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rc = 1;
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out:
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return rc;
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}
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static int libxl__hotplug_disk(libxl__gc *gc, libxl__device *dev,
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char ***args, char ***env,
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libxl__device_action action)
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{
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char *be_path = libxl__device_backend_path(gc, dev);
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char *script;
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int nr = 0, rc;
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script = libxl__xs_read(gc, XBT_NULL,
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GCSPRINTF("%s/%s", be_path, "script"));
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if (!script) {
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LOGEVD(ERROR, errno, dev->domid,
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"unable to read script from %s", be_path);
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rc = ERROR_FAIL;
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goto out;
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}
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const int arraysize = 4;
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GCNEW_ARRAY(*args, arraysize);
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(*args)[nr++] = script;
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(*args)[nr++] = be_path;
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(*args)[nr++] = (char *) libxl__device_action_to_string(action);
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(*args)[nr++] = NULL;
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assert(nr == arraysize);
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rc = 1;
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out:
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return rc;
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}
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int libxl__get_hotplug_script_info(libxl__gc *gc, libxl__device *dev,
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char ***args, char ***env,
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libxl__device_action action,
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int num_exec)
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{
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int rc;
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switch (dev->backend_kind) {
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case LIBXL__DEVICE_KIND_VIF:
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/*
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* If domain has a stubdom we don't have to execute hotplug scripts
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* for emulated interfaces
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*/
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if ((num_exec > 1) ||
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(libxl_get_stubdom_id(CTX, dev->domid) && num_exec)) {
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rc = 0;
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goto out;
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}
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rc = libxl__hotplug_nic(gc, dev, args, env, action, num_exec);
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break;
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case LIBXL__DEVICE_KIND_VBD:
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if (num_exec != 0) {
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rc = 0;
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goto out;
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}
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rc = libxl__hotplug_disk(gc, dev, args, env, action);
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break;
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default:
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/* No need to execute any hotplug scripts */
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rc = 0;
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break;
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}
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out:
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return rc;
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}
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int libxl__pci_numdevs(libxl__gc *gc)
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{
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return ERROR_NI;
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}
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int libxl__pci_topology_init(libxl__gc *gc,
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physdev_pci_device_t *devs,
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int num_devs)
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{
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return ERROR_NI;
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}
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int libxl__local_dm_preexec_restrict(libxl__gc *gc)
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{
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return 0;
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}
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