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/*
* Copyright (C) 2016 SUSE Linux GmbH
* Author Juergen Gross <jgross@suse.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; version 2.1 only. with the special
* exception on linking described in file LICENSE.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*/
#include "libxl_osdeps.h"
#include "libxl_internal.h"
static int libxl__device_vtpm_setdefault(libxl__gc *gc, uint32_t domid,
libxl_device_vtpm *vtpm, bool hotplug)
{
int rc;
if (libxl_uuid_is_nil(&vtpm->uuid)) {
libxl_uuid_generate(&vtpm->uuid);
}
rc = libxl__resolve_domid(gc, vtpm->backend_domname, &vtpm->backend_domid);
return rc;
}
static void libxl__update_config_vtpm(libxl__gc *gc, libxl_device_vtpm *dst,
libxl_device_vtpm *src)
{
dst->devid = src->devid;
libxl_uuid_copy(CTX, &dst->uuid, &src->uuid);
}
static int libxl__set_xenstore_vtpm(libxl__gc *gc, uint32_t domid,
libxl_device_vtpm *vtpm,
flexarray_t *back, flexarray_t *front,
flexarray_t *ro_front)
{
flexarray_append_pair(back, "handle", GCSPRINTF("%d", vtpm->devid));
flexarray_append_pair(back, "uuid",
GCSPRINTF(LIBXL_UUID_FMT,
LIBXL_UUID_BYTES(vtpm->uuid)));
flexarray_append_pair(back, "resume", "False");
flexarray_append_pair(front, "handle", GCSPRINTF("%d", vtpm->devid));
return 0;
}
static void libxl__device_vtpm_add(libxl__egc *egc, uint32_t domid,
libxl_device_vtpm *vtpm,
libxl__ao_device *aodev)
{
libxl__device_add_async(egc, domid, &libxl__vtpm_devtype, vtpm, aodev);
}
static int libxl__vtpm_from_xenstore(libxl__gc *gc, const char *libxl_path,
libxl_devid devid,
libxl_device_vtpm *vtpm)
{
int rc;
const char *be_path;
char *uuid;
vtpm->devid = devid;
rc = libxl__xs_read_mandatory(gc, XBT_NULL,
GCSPRINTF("%s/backend", libxl_path),
&be_path);
if (rc) return rc;
rc = libxl__backendpath_parse_domid(gc, be_path, &vtpm->backend_domid);
if (rc) return rc;
uuid = libxl__xs_read(gc, XBT_NULL, GCSPRINTF("%s/uuid", be_path));
if (uuid) {
if(libxl_uuid_from_string(&(vtpm->uuid), uuid)) {
LOGD(ERROR, vtpm->backend_domid, "%s/uuid is a malformed uuid?? "
"(%s) Probably a bug!!\n", be_path, uuid);
return ERROR_FAIL;
}
}
return 0;
}
int libxl_device_vtpm_getinfo(libxl_ctx *ctx,
uint32_t domid,
const libxl_device_vtpm *vtpm,
libxl_vtpminfo *vtpminfo)
{
GC_INIT(ctx);
char *libxl_path, *vtpmpath;
char *val;
int rc = 0;
libxl_vtpminfo_init(vtpminfo);
vtpminfo->devid = vtpm->devid;
vtpmpath = libxl__domain_device_frontend_path(gc, domid, vtpminfo->devid,
LIBXL__DEVICE_KIND_VTPM);
libxl_path = libxl__domain_device_libxl_path(gc, domid, vtpminfo->devid,
LIBXL__DEVICE_KIND_VTPM);
vtpminfo->backend = xs_read(ctx->xsh, XBT_NULL,
GCSPRINTF("%s/backend", libxl_path), NULL);
if (!vtpminfo->backend) {
goto err;
}
rc = libxl__backendpath_parse_domid(gc, vtpminfo->backend,
&vtpminfo->backend_id);
if (rc) goto exit;
val = libxl__xs_read(gc, XBT_NULL,
GCSPRINTF("%s/state", vtpmpath));
vtpminfo->state = val ? strtoul(val, NULL, 10) : -1;
val = libxl__xs_read(gc, XBT_NULL,
GCSPRINTF("%s/event-channel", vtpmpath));
vtpminfo->evtch = val ? strtoul(val, NULL, 10) : -1;
val = libxl__xs_read(gc, XBT_NULL,
GCSPRINTF("%s/ring-ref", vtpmpath));
vtpminfo->rref = val ? strtoul(val, NULL, 10) : -1;
vtpminfo->frontend = xs_read(ctx->xsh, XBT_NULL,
GCSPRINTF("%s/frontend", libxl_path), NULL);
vtpminfo->frontend_id = domid;
val = libxl__xs_read(gc, XBT_NULL,
GCSPRINTF("%s/uuid", libxl_path));
if(val == NULL) {
LOGD(ERROR, domid, "%s/uuid does not exist!", vtpminfo->backend);
goto err;
}
if(libxl_uuid_from_string(&(vtpminfo->uuid), val)) {
LOGD(ERROR, domid,
"%s/uuid is a malformed uuid?? (%s) Probably a bug!\n",
vtpminfo->backend, val);
goto err;
}
goto exit;
err:
rc = ERROR_FAIL;
exit:
GC_FREE;
return rc;
}
int libxl_devid_to_device_vtpm(libxl_ctx *ctx,
uint32_t domid,
int devid,
libxl_device_vtpm *vtpm)
{
GC_INIT(ctx);
libxl_device_vtpm *vtpms;
int nb, i;
int rc;
vtpms = libxl__device_list(gc, &libxl__vtpm_devtype, domid, &nb);
if (!vtpms)
return ERROR_FAIL;
libxl_device_vtpm_init(vtpm);
rc = 1;
for (i = 0; i < nb; ++i) {
if(devid == vtpms[i].devid) {
vtpm->backend_domid = vtpms[i].backend_domid;
vtpm->devid = vtpms[i].devid;
libxl_uuid_copy(ctx, &vtpm->uuid, &vtpms[i].uuid);
rc = 0;
break;
}
}
libxl__device_list_free(&libxl__vtpm_devtype, vtpms, nb);
GC_FREE;
return rc;
}
static int libxl_device_vtpm_compare(const libxl_device_vtpm *d1,
const libxl_device_vtpm *d2)
{
return COMPARE_DEVID(d1, d2);
}
int libxl_uuid_to_device_vtpm(libxl_ctx *ctx, uint32_t domid,
libxl_uuid* uuid, libxl_device_vtpm *vtpm)
{
GC_INIT(ctx);
libxl_device_vtpm *vtpms;
int nb, i;
int rc;
vtpms = libxl__device_list(gc, &libxl__vtpm_devtype, domid, &nb);
if (!vtpms)
return ERROR_FAIL;
memset(vtpm, 0, sizeof (libxl_device_vtpm));
rc = 1;
for (i = 0; i < nb; ++i) {
if(!libxl_uuid_compare(uuid, &vtpms[i].uuid)) {
vtpm->backend_domid = vtpms[i].backend_domid;
vtpm->devid = vtpms[i].devid;
libxl_uuid_copy(ctx, &vtpm->uuid, &vtpms[i].uuid);
rc = 0;
break;
}
}
libxl__device_list_free(&libxl__vtpm_devtype, vtpms, nb);
GC_FREE;
return rc;
}
static void libxl_device_vtpm_update_config(libxl__gc *gc, void *d, void *s)
{
libxl__update_config_vtpm(gc, d, s);
}
static LIBXL_DEFINE_UPDATE_DEVID(vtpm)
static LIBXL_DEFINE_DEVICE_FROM_TYPE(vtpm)
static LIBXL_DEFINE_DEVICES_ADD(vtpm)
LIBXL_DEFINE_DEVICE_ADD(vtpm)
LIBXL_DEFINE_DEVICE_REMOVE(vtpm)
LIBXL_DEFINE_DEVICE_LIST(vtpm)
DEFINE_DEVICE_TYPE_STRUCT(vtpm, VTPM, vtpms,
.update_config = libxl_device_vtpm_update_config,
.from_xenstore = (device_from_xenstore_fn_t)libxl__vtpm_from_xenstore,
.set_xenstore_config = (device_set_xenstore_config_fn_t)
libxl__set_xenstore_vtpm,
);
/*
* Local variables:
* mode: C
* c-basic-offset: 4
* indent-tabs-mode: nil
* End:
*/
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