+++ /dev/null
-/*
- * TPM configuration
- *
- * Copyright (C) 2011-2013 IBM Corporation
- *
- * Authors:
- * Stefan Berger <stefanb@us.ibm.com>
- *
- * This work is licensed under the terms of the GNU GPL, version 2 or later.
- * See the COPYING file in the top-level directory.
- *
- * Based on net.c
- */
-
-#include "qemu/osdep.h"
-
-#include "qapi/error.h"
-#include "qapi/qapi-commands-tpm.h"
-#include "qapi/qmp/qerror.h"
-#include "sysemu/tpm_backend.h"
-#include "sysemu/tpm.h"
-#include "qemu/config-file.h"
-#include "qemu/error-report.h"
-
-static QLIST_HEAD(, TPMBackend) tpm_backends =
- QLIST_HEAD_INITIALIZER(tpm_backends);
-
-static const TPMBackendClass *
-tpm_be_find_by_type(enum TpmType type)
-{
- ObjectClass *oc;
- char *typename = g_strdup_printf("tpm-%s", TpmType_str(type));
-
- oc = object_class_by_name(typename);
- g_free(typename);
-
- if (!object_class_dynamic_cast(oc, TYPE_TPM_BACKEND)) {
- return NULL;
- }
-
- return TPM_BACKEND_CLASS(oc);
-}
-
-/*
- * Walk the list of available TPM backend drivers and display them on the
- * screen.
- */
-static void tpm_display_backend_drivers(void)
-{
- bool got_one = false;
- int i;
-
- for (i = 0; i < TPM_TYPE__MAX; i++) {
- const TPMBackendClass *bc = tpm_be_find_by_type(i);
- if (!bc) {
- continue;
- }
- if (!got_one) {
- error_printf("Supported TPM types (choose only one):\n");
- got_one = true;
- }
- error_printf("%12s %s\n", TpmType_str(i), bc->desc);
- }
- if (!got_one) {
- error_printf("No TPM backend types are available\n");
- }
-}
-
-/*
- * Find the TPM with the given Id
- */
-TPMBackend *qemu_find_tpm_be(const char *id)
-{
- TPMBackend *drv;
-
- if (id) {
- QLIST_FOREACH(drv, &tpm_backends, list) {
- if (!strcmp(drv->id, id)) {
- return drv;
- }
- }
- }
-
- return NULL;
-}
-
-static int tpm_init_tpmdev(void *dummy, QemuOpts *opts, Error **errp)
-{
- /*
- * Use of error_report() in a function with an Error ** parameter
- * is suspicious. It is okay here. The parameter only exists to
- * make the function usable with qemu_opts_foreach(). It is not
- * actually used.
- */
- const char *value;
- const char *id;
- const TPMBackendClass *be;
- TPMBackend *drv;
- Error *local_err = NULL;
- int i;
-
- if (!QLIST_EMPTY(&tpm_backends)) {
- error_report("Only one TPM is allowed.");
- return 1;
- }
-
- id = qemu_opts_id(opts);
- if (id == NULL) {
- error_report(QERR_MISSING_PARAMETER, "id");
- return 1;
- }
-
- value = qemu_opt_get(opts, "type");
- if (!value) {
- error_report(QERR_MISSING_PARAMETER, "type");
- tpm_display_backend_drivers();
- return 1;
- }
-
- i = qapi_enum_parse(&TpmType_lookup, value, -1, NULL);
- be = i >= 0 ? tpm_be_find_by_type(i) : NULL;
- if (be == NULL) {
- error_report(QERR_INVALID_PARAMETER_VALUE,
- "type", "a TPM backend type");
- tpm_display_backend_drivers();
- return 1;
- }
-
- /* validate backend specific opts */
- if (!qemu_opts_validate(opts, be->opts, &local_err)) {
- error_report_err(local_err);
- return 1;
- }
-
- drv = be->create(opts);
- if (!drv) {
- return 1;
- }
-
- drv->id = g_strdup(id);
- QLIST_INSERT_HEAD(&tpm_backends, drv, list);
-
- return 0;
-}
-
-/*
- * Walk the list of TPM backend drivers that are in use and call their
- * destroy function to have them cleaned up.
- */
-void tpm_cleanup(void)
-{
- TPMBackend *drv, *next;
-
- QLIST_FOREACH_SAFE(drv, &tpm_backends, list, next) {
- QLIST_REMOVE(drv, list);
- object_unref(OBJECT(drv));
- }
-}
-
-/*
- * Initialize the TPM. Process the tpmdev command line options describing the
- * TPM backend.
- */
-int tpm_init(void)
-{
- if (qemu_opts_foreach(qemu_find_opts("tpmdev"),
- tpm_init_tpmdev, NULL, NULL)) {
- return -1;
- }
-
- return 0;
-}
-
-/*
- * Parse the TPM configuration options.
- * To display all available TPM backends the user may use '-tpmdev help'
- */
-int tpm_config_parse(QemuOptsList *opts_list, const char *optarg)
-{
- QemuOpts *opts;
-
- if (!strcmp(optarg, "help")) {
- tpm_display_backend_drivers();
- return -1;
- }
- opts = qemu_opts_parse_noisily(opts_list, optarg, true);
- if (!opts) {
- return -1;
- }
- return 0;
-}
-
-/*
- * Walk the list of active TPM backends and collect information about them.
- */
-TPMInfoList *qmp_query_tpm(Error **errp)
-{
- TPMBackend *drv;
- TPMInfoList *info, *head = NULL, *cur_item = NULL;
-
- QLIST_FOREACH(drv, &tpm_backends, list) {
- if (!drv->tpmif) {
- continue;
- }
-
- info = g_new0(TPMInfoList, 1);
- info->value = tpm_backend_query_tpm(drv);
-
- if (!cur_item) {
- head = cur_item = info;
- } else {
- cur_item->next = info;
- cur_item = info;
- }
- }
-
- return head;
-}
-
-TpmTypeList *qmp_query_tpm_types(Error **errp)
-{
- unsigned int i = 0;
- TpmTypeList *head = NULL, *prev = NULL, *cur_item;
-
- for (i = 0; i < TPM_TYPE__MAX; i++) {
- if (!tpm_be_find_by_type(i)) {
- continue;
- }
- cur_item = g_new0(TpmTypeList, 1);
- cur_item->value = i;
-
- if (prev) {
- prev->next = cur_item;
- }
- if (!head) {
- head = cur_item;
- }
- prev = cur_item;
- }
-
- return head;
-}
-TpmModelList *qmp_query_tpm_models(Error **errp)
-{
- TpmModelList *head = NULL, *prev = NULL, *cur_item;
- GSList *e, *l = object_class_get_list(TYPE_TPM_IF, false);
-
- for (e = l; e; e = e->next) {
- TPMIfClass *c = TPM_IF_CLASS(e->data);
-
- cur_item = g_new0(TpmModelList, 1);
- cur_item->value = c->model;
-
- if (prev) {
- prev->next = cur_item;
- }
- if (!head) {
- head = cur_item;
- }
- prev = cur_item;
- }
- g_slist_free(l);
-
- return head;
-}
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