From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56446) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1dvN8c-0000fI-E7 for qemu-devel@nongnu.org; Fri, 22 Sep 2017 08:33:05 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1dvN8a-0005vS-L0 for qemu-devel@nongnu.org; Fri, 22 Sep 2017 08:32:58 -0400 Received: from mga07.intel.com ([134.134.136.100]:27337) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1dvN8a-0005pe-87 for qemu-devel@nongnu.org; Fri, 22 Sep 2017 08:32:56 -0400 From: Amarnath Valluri Date: Fri, 22 Sep 2017 15:33:41 +0300 Message-Id: <1506083624-20621-6-git-send-email-amarnath.valluri@intel.com> In-Reply-To: <1506083624-20621-1-git-send-email-amarnath.valluri@intel.com> References: <1506083624-20621-1-git-send-email-amarnath.valluri@intel.com> Subject: [Qemu-devel] [PATCH v7 5/8] tmp backend: Add new api to read backend TpmInfo List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: Stefan Berger , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Amarnath Valluri , "Dr. David Alan Gilbert" TPM configuration options are backend implementation details and shall not be part of base TPMBackend object, and these shall not be accessed directly outside of the class, hence added a new interface method, get_tpm_options() to TPMDriverOps., which shall be implemented by the derived classes to return configured tpm options. A new tpm backend api - tpm_backend_query_tpm() which uses _get_tpm_options() to prepare TpmInfo. Signed-off-by: Amarnath Valluri Reviewed-by: Stefan Berger --- backends/tpm.c | 22 +++++++++++++-- hmp.c | 7 ++--- hw/tpm/tpm_passthrough.c | 64 +++++++++++++++++++++++++++++++------------- include/sysemu/tpm_backend.h | 25 +++++++++++++++-- tpm.c | 32 +--------------------- 5 files changed, 93 insertions(+), 57 deletions(-) diff --git a/backends/tpm.c b/backends/tpm.c index c409a46..6ade9e4 100644 --- a/backends/tpm.c +++ b/backends/tpm.c @@ -138,6 +138,26 @@ TPMVersion tpm_backend_get_tpm_version(TPMBackend *s) return k->ops->get_tpm_version(s); } +TpmTypeOptions *tpm_backend_get_tpm_options(TPMBackend *s) +{ + TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + + assert(k->ops->get_tpm_options); + + return k->ops->get_tpm_options(s); +} + +TPMInfo *tpm_backend_query_tpm(TPMBackend *s) +{ + TPMInfo *info = g_new0(TPMInfo, 1); + + info->id = g_strdup(s->id); + info->model = s->fe_model; + info->options = tpm_backend_get_tpm_options(s); + + return info; +} + static bool tpm_backend_prop_get_opened(Object *obj, Error **errp) { TPMBackend *s = TPM_BACKEND(obj); @@ -192,8 +212,6 @@ static void tpm_backend_instance_finalize(Object *obj) TPMBackend *s = TPM_BACKEND(obj); g_free(s->id); - g_free(s->path); - g_free(s->cancel_path); tpm_backend_thread_end(s); } diff --git a/hmp.c b/hmp.c index 0fb2bc7..cf62b2e 100644 --- a/hmp.c +++ b/hmp.c @@ -31,6 +31,7 @@ #include "qapi/qmp/qerror.h" #include "qapi/string-input-visitor.h" #include "qapi/string-output-visitor.h" +#include "qapi/util.h" #include "qapi-visit.h" #include "qom/object_interfaces.h" #include "ui/console.h" @@ -1012,10 +1013,10 @@ void hmp_info_tpm(Monitor *mon, const QDict *qdict) c, TpmModel_str(ti->model)); monitor_printf(mon, " \\ %s: type=%s", - ti->id, TpmTypeOptionsKind_str(ti->options->type)); + ti->id, TpmType_str(ti->options->type)); switch (ti->options->type) { - case TPM_TYPE_OPTIONS_KIND_PASSTHROUGH: + case TPM_TYPE_PASSTHROUGH: tpo = ti->options->u.passthrough.data; monitor_printf(mon, "%s%s%s%s", tpo->has_path ? ",path=" : "", @@ -1023,7 +1024,7 @@ void hmp_info_tpm(Monitor *mon, const QDict *qdict) tpo->has_cancel_path ? ",cancel-path=" : "", tpo->has_cancel_path ? tpo->cancel_path : ""); break; - case TPM_TYPE_OPTIONS_KIND__MAX: + case TPM_TYPE__MAX: break; } monitor_printf(mon, "\n"); diff --git a/hw/tpm/tpm_passthrough.c b/hw/tpm/tpm_passthrough.c index a0459a6..fb7dad8 100644 --- a/hw/tpm/tpm_passthrough.c +++ b/hw/tpm/tpm_passthrough.c @@ -49,7 +49,8 @@ struct TPMPassthruState { TPMBackend parent; - char *tpm_dev; + TPMPassthroughOptions *options; + const char *tpm_dev; int tpm_fd; bool tpm_executing; bool tpm_op_canceled; @@ -308,15 +309,14 @@ static TPMVersion tpm_passthrough_get_tpm_version(TPMBackend *tb) * in Documentation/ABI/stable/sysfs-class-tpm. * From /dev/tpm0 create /sys/class/misc/tpm0/device/cancel */ -static int tpm_passthrough_open_sysfs_cancel(TPMBackend *tb) +static int tpm_passthrough_open_sysfs_cancel(TPMPassthruState *tpm_pt) { - TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb); int fd = -1; char *dev; char path[PATH_MAX]; - if (tb->cancel_path) { - fd = qemu_open(tb->cancel_path, O_WRONLY); + if (tpm_pt->options->cancel_path) { + fd = qemu_open(tpm_pt->options->cancel_path, O_WRONLY); if (fd < 0) { error_report("Could not open TPM cancel path : %s", strerror(errno)); @@ -331,7 +331,7 @@ static int tpm_passthrough_open_sysfs_cancel(TPMBackend *tb) dev) < sizeof(path)) { fd = qemu_open(path, O_WRONLY); if (fd >= 0) { - tb->cancel_path = g_strdup(path); + tpm_pt->options->cancel_path = g_strdup(path); } else { error_report("tpm_passthrough: Could not open TPM cancel " "path %s : %s", path, strerror(errno)); @@ -351,17 +351,18 @@ static int tpm_passthrough_handle_device_opts(QemuOpts *opts, TPMBackend *tb) const char *value; value = qemu_opt_get(opts, "cancel-path"); - tb->cancel_path = g_strdup(value); + if (value) { + tpm_pt->options->cancel_path = g_strdup(value); + tpm_pt->options->has_cancel_path = true; + } value = qemu_opt_get(opts, "path"); - if (!value) { - value = TPM_PASSTHROUGH_DEFAULT_DEVICE; + if (value) { + tpm_pt->options->has_path = true; + tpm_pt->options->path = g_strdup(value); } - tpm_pt->tpm_dev = g_strdup(value); - - tb->path = g_strdup(tpm_pt->tpm_dev); - + tpm_pt->tpm_dev = value ? value : TPM_PASSTHROUGH_DEFAULT_DEVICE; tpm_pt->tpm_fd = qemu_open(tpm_pt->tpm_dev, O_RDWR); if (tpm_pt->tpm_fd < 0) { error_report("Cannot access TPM device using '%s': %s", @@ -382,10 +383,8 @@ static int tpm_passthrough_handle_device_opts(QemuOpts *opts, TPMBackend *tb) tpm_pt->tpm_fd = -1; err_free_parameters: - g_free(tb->path); - tb->path = NULL; - - g_free(tpm_pt->tpm_dev); + qapi_free_TPMPassthroughOptions(tpm_pt->options); + tpm_pt->options = NULL; tpm_pt->tpm_dev = NULL; return 1; @@ -403,7 +402,7 @@ static TPMBackend *tpm_passthrough_create(QemuOpts *opts, const char *id) goto err_exit; } - tpm_pt->cancel_fd = tpm_passthrough_open_sysfs_cancel(tb); + tpm_pt->cancel_fd = tpm_passthrough_open_sysfs_cancel(tpm_pt); if (tpm_pt->cancel_fd < 0) { goto err_exit; } @@ -416,6 +415,31 @@ err_exit: return NULL; } +static TpmTypeOptions *tpm_passthrough_get_tpm_options(TPMBackend *tb) +{ + TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb); + TpmTypeOptions *options = NULL; + TPMPassthroughOptions *poptions = NULL; + + poptions = g_new0(TPMPassthroughOptions, 1); + + if (tpm_pt->options->has_path) { + poptions->has_path = true; + poptions->path = g_strdup(tpm_pt->options->path); + } + + if (tpm_pt->options->has_cancel_path) { + poptions->has_cancel_path = true; + poptions->cancel_path = g_strdup(tpm_pt->options->cancel_path); + } + + options = g_new0(TpmTypeOptions, 1); + options->type = TPM_TYPE_PASSTHROUGH; + options->u.passthrough.data = poptions; + + return options; +} + static const QemuOptDesc tpm_passthrough_cmdline_opts[] = { TPM_STANDARD_CMDLINE_OPTS, { @@ -443,12 +467,14 @@ static const TPMDriverOps tpm_passthrough_driver = { .get_tpm_established_flag = tpm_passthrough_get_tpm_established_flag, .reset_tpm_established_flag = tpm_passthrough_reset_tpm_established_flag, .get_tpm_version = tpm_passthrough_get_tpm_version, + .get_tpm_options = tpm_passthrough_get_tpm_options, }; static void tpm_passthrough_inst_init(Object *obj) { TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(obj); + tpm_pt->options = g_new0(TPMPassthroughOptions, 1); tpm_pt->tpm_fd = -1; tpm_pt->cancel_fd = -1; } @@ -461,7 +487,7 @@ static void tpm_passthrough_inst_finalize(Object *obj) qemu_close(tpm_pt->tpm_fd); qemu_close(tpm_pt->cancel_fd); - g_free(tpm_pt->tpm_dev); + qapi_free_TPMPassthroughOptions(tpm_pt->options); } static void tpm_passthrough_class_init(ObjectClass *klass, void *data) diff --git a/include/sysemu/tpm_backend.h b/include/sysemu/tpm_backend.h index 13311cf..809eec2 100644 --- a/include/sysemu/tpm_backend.h +++ b/include/sysemu/tpm_backend.h @@ -48,10 +48,9 @@ struct TPMBackend { GThreadPool *thread_pool; TPMRecvDataCB *recv_data_callback; + /* */ char *id; enum TpmModel fe_model; - char *path; - char *cancel_path; QLIST_ENTRY(TPMBackend) list; }; @@ -97,6 +96,8 @@ struct TPMDriverOps { int (*reset_tpm_established_flag)(TPMBackend *t, uint8_t locty); TPMVersion (*get_tpm_version)(TPMBackend *t); + + TpmTypeOptions *(*get_tpm_options)(TPMBackend *t); }; @@ -215,6 +216,26 @@ void tpm_backend_open(TPMBackend *s, Error **errp); */ TPMVersion tpm_backend_get_tpm_version(TPMBackend *s); +/** + * tpm_backend_get_tpm_options: + * @s: the backend + * + * Get the backend configuration options + * + * Returns newly allocated TpmTypeOptions + */ +TpmTypeOptions *tpm_backend_get_tpm_options(TPMBackend *s); + +/** + * tpm_backend_query_tpm: + * @s: the backend + * + * Query backend tpm info + * + * Returns newly allocated TPMInfo + */ +TPMInfo *tpm_backend_query_tpm(TPMBackend *s); + TPMBackend *qemu_find_tpm(const char *id); const TPMDriverOps *tpm_get_backend_driver(const char *type); diff --git a/tpm.c b/tpm.c index db14849..3b8c7ed 100644 --- a/tpm.c +++ b/tpm.c @@ -202,36 +202,6 @@ static const TPMDriverOps *tpm_driver_find_by_type(enum TpmType type) return be_drivers[type]; } -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 (tpm_backend_get_type(drv)) { - 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. @@ -246,7 +216,7 @@ TPMInfoList *qmp_query_tpm(Error **errp) continue; } info = g_new0(TPMInfoList, 1); - info->value = qmp_query_tpm_inst(drv); + info->value = tpm_backend_query_tpm(drv); if (!cur_item) { head = cur_item = info; -- 2.7.4