diff options
Diffstat (limited to 'qemu/tpm.c')
-rw-r--r-- | qemu/tpm.c | 355 |
1 files changed, 0 insertions, 355 deletions
diff --git a/qemu/tpm.c b/qemu/tpm.c deleted file mode 100644 index 9a7c7114d..000000000 --- a/qemu/tpm.c +++ /dev/null @@ -1,355 +0,0 @@ -/* - * 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/qmp/qerror.h" -#include "sysemu/tpm_backend.h" -#include "sysemu/tpm.h" -#include "qemu/config-file.h" -#include "qemu/error-report.h" -#include "qmp-commands.h" - -static QLIST_HEAD(, TPMBackend) tpm_backends = - QLIST_HEAD_INITIALIZER(tpm_backends); - - -#define TPM_MAX_MODELS 1 -#define TPM_MAX_DRIVERS 1 - -static TPMDriverOps const *be_drivers[TPM_MAX_DRIVERS] = { - NULL, -}; - -static enum TpmModel tpm_models[TPM_MAX_MODELS] = { - TPM_MODEL__MAX, -}; - -int tpm_register_model(enum TpmModel model) -{ - int i; - - for (i = 0; i < TPM_MAX_MODELS; i++) { - if (tpm_models[i] == TPM_MODEL__MAX) { - tpm_models[i] = model; - return 0; - } - } - error_report("Could not register TPM model"); - return 1; -} - -static bool tpm_model_is_registered(enum TpmModel model) -{ - int i; - - for (i = 0; i < TPM_MAX_MODELS; i++) { - if (tpm_models[i] == model) { - return true; - } - } - return false; -} - -const TPMDriverOps *tpm_get_backend_driver(const char *type) -{ - int i; - - for (i = 0; i < TPM_MAX_DRIVERS && be_drivers[i] != NULL; i++) { - if (!strcmp(TpmType_lookup[be_drivers[i]->type], type)) { - return be_drivers[i]; - } - } - - return NULL; -} - -#ifdef CONFIG_TPM - -int tpm_register_driver(const TPMDriverOps *tdo) -{ - int i; - - for (i = 0; i < TPM_MAX_DRIVERS; i++) { - if (!be_drivers[i]) { - be_drivers[i] = tdo; - return 0; - } - } - error_report("Could not register TPM driver"); - return 1; -} - -/* - * Walk the list of available TPM backend drivers and display them on the - * screen. - */ -static void tpm_display_backend_drivers(void) -{ - int i; - - fprintf(stderr, "Supported TPM types (choose only one):\n"); - - for (i = 0; i < TPM_MAX_DRIVERS && be_drivers[i] != NULL; i++) { - fprintf(stderr, "%12s %s\n", - TpmType_lookup[be_drivers[i]->type], be_drivers[i]->desc()); - } - fprintf(stderr, "\n"); -} - -/* - * Find the TPM with the given Id - */ -TPMBackend *qemu_find_tpm(const char *id) -{ - TPMBackend *drv; - - if (id) { - QLIST_FOREACH(drv, &tpm_backends, list) { - if (!strcmp(drv->id, id)) { - return drv; - } - } - } - - return NULL; -} - -static int configure_tpm(QemuOpts *opts) -{ - const char *value; - const char *id; - const TPMDriverOps *be; - TPMBackend *drv; - Error *local_err = NULL; - - 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; - } - - be = tpm_get_backend_driver(value); - if (be == NULL) { - error_report(QERR_INVALID_PARAMETER_VALUE, - "type", "a TPM backend type"); - tpm_display_backend_drivers(); - return 1; - } - - /* validate backend specific opts */ - qemu_opts_validate(opts, be->opts, &local_err); - if (local_err) { - error_report_err(local_err); - return 1; - } - - drv = be->create(opts, id); - if (!drv) { - return 1; - } - - tpm_backend_open(drv, &local_err); - if (local_err) { - error_report_err(local_err); - return 1; - } - - QLIST_INSERT_HEAD(&tpm_backends, drv, list); - - return 0; -} - -static int tpm_init_tpmdev(void *dummy, QemuOpts *opts, Error **errp) -{ - return configure_tpm(opts); -} - -/* - * 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); - tpm_backend_destroy(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; - } - - atexit(tpm_cleanup); - 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; -} - -#endif /* CONFIG_TPM */ - -static const TPMDriverOps *tpm_driver_find_by_type(enum TpmType type) -{ - int i; - - for (i = 0; i < TPM_MAX_DRIVERS && be_drivers[i] != NULL; i++) { - if (be_drivers[i]->type == type) { - return be_drivers[i]; - } - } - return NULL; -} - -static TPMInfo *qmp_query_tpm_inst(TPMBackend *drv) -{ - TPMInfo *res = g_new0(TPMInfo, 1); - TPMPassthroughOptions *tpo; - - res->id = g_strdup(drv->id); - res->model = drv->fe_model; - res->options = g_new0(TpmTypeOptions, 1); - - switch (drv->ops->type) { - case TPM_TYPE_PASSTHROUGH: - res->options->type = TPM_TYPE_OPTIONS_KIND_PASSTHROUGH; - tpo = g_new0(TPMPassthroughOptions, 1); - res->options->u.passthrough.data = tpo; - if (drv->path) { - tpo->path = g_strdup(drv->path); - tpo->has_path = true; - } - if (drv->cancel_path) { - tpo->cancel_path = g_strdup(drv->cancel_path); - tpo->has_cancel_path = true; - } - break; - case TPM_TYPE__MAX: - break; - } - - return res; -} - -/* - * Walk the list of active TPM backends and collect information about them - * following the schema description in qapi-schema.json. - */ -TPMInfoList *qmp_query_tpm(Error **errp) -{ - TPMBackend *drv; - TPMInfoList *info, *head = NULL, *cur_item = NULL; - - QLIST_FOREACH(drv, &tpm_backends, list) { - if (!tpm_model_is_registered(drv->fe_model)) { - continue; - } - info = g_new0(TPMInfoList, 1); - info->value = qmp_query_tpm_inst(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_driver_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) -{ - unsigned int i = 0; - TpmModelList *head = NULL, *prev = NULL, *cur_item; - - for (i = 0; i < TPM_MODEL__MAX; i++) { - if (!tpm_model_is_registered(i)) { - continue; - } - cur_item = g_new0(TpmModelList, 1); - cur_item->value = i; - - if (prev) { - prev->next = cur_item; - } - if (!head) { - head = cur_item; - } - prev = cur_item; - } - - return head; -} |