From patchwork Fri Jan 19 14:11:02 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= X-Patchwork-Id: 863540 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 3zNN9G2NMnz9s7G for ; Sat, 20 Jan 2018 01:13:54 +1100 (AEDT) Received: from localhost ([::1]:51478 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ecXQV-0001II-EE for incoming@patchwork.ozlabs.org; Fri, 19 Jan 2018 09:13:51 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56588) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ecXOA-00088l-Ss for qemu-devel@nongnu.org; Fri, 19 Jan 2018 09:11:28 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ecXO7-0004mC-JR for qemu-devel@nongnu.org; Fri, 19 Jan 2018 09:11:26 -0500 Received: from mx1.redhat.com ([209.132.183.28]:60512) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1ecXO7-0004lU-AX for qemu-devel@nongnu.org; Fri, 19 Jan 2018 09:11:23 -0500 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 95B7EC0567A2; Fri, 19 Jan 2018 14:11:22 +0000 (UTC) Received: from localhost (ovpn-112-58.ams2.redhat.com [10.36.112.58]) by smtp.corp.redhat.com (Postfix) with ESMTP id 0565260852; Fri, 19 Jan 2018 14:11:18 +0000 (UTC) From: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= To: qemu-devel@nongnu.org Date: Fri, 19 Jan 2018 15:11:02 +0100 Message-Id: <20180119141105.29095-4-marcandre.lureau@redhat.com> In-Reply-To: <20180119141105.29095-1-marcandre.lureau@redhat.com> References: <20180119141105.29095-1-marcandre.lureau@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.32]); Fri, 19 Jan 2018 14:11:22 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v2 3/5] tpm: report backend request error X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , stefanb@linux.vnet.ibm.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Use an Error** for request to let the caller handle error reporting. This will also allow to inform the frontend of a backend error. Signed-off-by: Marc-André Lureau Reviewed-by: Stefan Berger --- include/sysemu/tpm.h | 2 +- include/sysemu/tpm_backend.h | 3 ++- backends/tpm.c | 9 +++++++-- hw/tpm/tpm_emulator.c | 21 ++++++--------------- hw/tpm/tpm_passthrough.c | 31 +++++++++++++++---------------- hw/tpm/tpm_tis.c | 3 ++- 6 files changed, 33 insertions(+), 36 deletions(-) diff --git a/include/sysemu/tpm.h b/include/sysemu/tpm.h index 852e02687c..ac04a9d4a2 100644 --- a/include/sysemu/tpm.h +++ b/include/sysemu/tpm.h @@ -41,7 +41,7 @@ typedef struct TPMIfClass { InterfaceClass parent_class; enum TpmModel model; - void (*request_completed)(TPMIf *obj); + void (*request_completed)(TPMIf *obj, int ret); enum TPMVersion (*get_version)(TPMIf *obj); } TPMIfClass; diff --git a/include/sysemu/tpm_backend.h b/include/sysemu/tpm_backend.h index a69593e0cd..7e166ef954 100644 --- a/include/sysemu/tpm_backend.h +++ b/include/sysemu/tpm_backend.h @@ -18,6 +18,7 @@ #include "qapi-types.h" #include "qemu/option.h" #include "sysemu/tpm.h" +#include "qapi/error.h" #define TYPE_TPM_BACKEND "tpm-backend" #define TPM_BACKEND(obj) \ @@ -84,7 +85,7 @@ struct TPMBackendClass { TpmTypeOptions *(*get_tpm_options)(TPMBackend *t); - void (*handle_request)(TPMBackend *s, TPMBackendCmd *cmd); + void (*handle_request)(TPMBackend *s, TPMBackendCmd *cmd, Error **errp); }; /** diff --git a/backends/tpm.c b/backends/tpm.c index 143807aa37..d617ba7c52 100644 --- a/backends/tpm.c +++ b/backends/tpm.c @@ -27,7 +27,7 @@ static void tpm_backend_request_completed(void *opaque, int ret) TPMBackend *s = TPM_BACKEND(opaque); TPMIfClass *tic = TPM_IF_GET_CLASS(s->tpmif); - tic->request_completed(s->tpmif); + tic->request_completed(s->tpmif, ret); /* no need for atomic, as long the BQL is taken */ s->cmd = NULL; @@ -38,8 +38,13 @@ static int tpm_backend_worker_thread(gpointer data) { TPMBackend *s = TPM_BACKEND(data); TPMBackendClass *k = TPM_BACKEND_GET_CLASS(s); + Error *err = NULL; - k->handle_request(s, s->cmd); + k->handle_request(s, s->cmd, &err); + if (err) { + error_report_err(err); + return -1; + } return 0; } diff --git a/hw/tpm/tpm_emulator.c b/hw/tpm/tpm_emulator.c index 35c78de5a9..52552af9f9 100644 --- a/hw/tpm/tpm_emulator.c +++ b/hw/tpm/tpm_emulator.c @@ -185,28 +185,19 @@ static int tpm_emulator_set_locality(TPMEmulator *tpm_emu, uint8_t locty_number, return 0; } -static void tpm_emulator_handle_request(TPMBackend *tb, TPMBackendCmd *cmd) +static void tpm_emulator_handle_request(TPMBackend *tb, TPMBackendCmd *cmd, + Error **errp) { TPMEmulator *tpm_emu = TPM_EMULATOR(tb); - Error *err = NULL; DPRINTF("processing TPM command"); - if (tpm_emulator_set_locality(tpm_emu, cmd->locty, &err) < 0) { - goto error; - } - - if (tpm_emulator_unix_tx_bufs(tpm_emu, cmd->in, cmd->in_len, + if (tpm_emulator_set_locality(tpm_emu, cmd->locty, errp) < 0 || + tpm_emulator_unix_tx_bufs(tpm_emu, cmd->in, cmd->in_len, cmd->out, cmd->out_len, - &cmd->selftest_done, &err) < 0) { - goto error; + &cmd->selftest_done, errp) < 0) { + tpm_util_write_fatal_error_response(cmd->out, cmd->out_len); } - - return; - -error: - tpm_util_write_fatal_error_response(cmd->out, cmd->out_len); - error_report_err(err); } static int tpm_emulator_probe_caps(TPMEmulator *tpm_emu) diff --git a/hw/tpm/tpm_passthrough.c b/hw/tpm/tpm_passthrough.c index f2563ac668..37dce15801 100644 --- a/hw/tpm/tpm_passthrough.c +++ b/hw/tpm/tpm_passthrough.c @@ -80,10 +80,11 @@ static int tpm_passthrough_unix_read(int fd, uint8_t *buf, uint32_t len) } return ret; } -static int tpm_passthrough_unix_tx_bufs(TPMPassthruState *tpm_pt, - const uint8_t *in, uint32_t in_len, - uint8_t *out, uint32_t out_len, - bool *selftest_done) + +static void tpm_passthrough_unix_tx_bufs(TPMPassthruState *tpm_pt, + const uint8_t *in, uint32_t in_len, + uint8_t *out, uint32_t out_len, + bool *selftest_done, Error **errp) { ssize_t ret; bool is_selftest; @@ -99,9 +100,8 @@ static int tpm_passthrough_unix_tx_bufs(TPMPassthruState *tpm_pt, ret = qemu_write_full(tpm_pt->tpm_fd, in, in_len); if (ret != in_len) { if (!tpm_pt->tpm_op_canceled || errno != ECANCELED) { - error_report("tpm_passthrough: error while transmitting data " - "to TPM: %s (%i)", - strerror(errno), errno); + error_setg_errno(errp, errno, "tpm_passthrough: error while " + "transmitting data to TPM"); } goto err_exit; } @@ -111,15 +111,14 @@ static int tpm_passthrough_unix_tx_bufs(TPMPassthruState *tpm_pt, ret = tpm_passthrough_unix_read(tpm_pt->tpm_fd, out, out_len); if (ret < 0) { if (!tpm_pt->tpm_op_canceled || errno != ECANCELED) { - error_report("tpm_passthrough: error while reading data from " - "TPM: %s (%i)", - strerror(errno), errno); + error_setg_errno(errp, errno, "tpm_passthrough: error while " + "reading data from TPM"); } } else if (ret < sizeof(struct tpm_resp_hdr) || be32_to_cpu(((struct tpm_resp_hdr *)out)->len) != ret) { ret = -1; - error_report("tpm_passthrough: received invalid response " - "packet from TPM"); + error_setg_errno(errp, errno, "tpm_passthrough: received invalid " + "response packet from TPM"); } if (is_selftest && (ret >= sizeof(struct tpm_resp_hdr))) { @@ -133,18 +132,18 @@ err_exit: } tpm_pt->tpm_executing = false; - - return ret; } -static void tpm_passthrough_handle_request(TPMBackend *tb, TPMBackendCmd *cmd) +static void tpm_passthrough_handle_request(TPMBackend *tb, TPMBackendCmd *cmd, + Error **errp) { TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb); DPRINTF("tpm_passthrough: processing command %p\n", cmd); tpm_passthrough_unix_tx_bufs(tpm_pt, cmd->in, cmd->in_len, - cmd->out, cmd->out_len, &cmd->selftest_done); + cmd->out, cmd->out_len, &cmd->selftest_done, + errp); } static void tpm_passthrough_reset(TPMBackend *tb) diff --git a/hw/tpm/tpm_tis.c b/hw/tpm/tpm_tis.c index 8b5eb01a2c..08f41d2707 100644 --- a/hw/tpm/tpm_tis.c +++ b/hw/tpm/tpm_tis.c @@ -393,7 +393,7 @@ static void tpm_tis_prep_abort(TPMState *s, uint8_t locty, uint8_t newlocty) /* * Callback from the TPM to indicate that the response was received. */ -static void tpm_tis_request_completed(TPMIf *ti) +static void tpm_tis_request_completed(TPMIf *ti, int ret) { TPMState *s = TPM(ti); uint8_t locty = s->cmd.locty; @@ -405,6 +405,7 @@ static void tpm_tis_request_completed(TPMIf *ti) } } + /* FIXME: report error if ret != 0 */ tpm_tis_sts_set(&s->loc[locty], TPM_TIS_STS_VALID | TPM_TIS_STS_DATA_AVAILABLE); s->loc[locty].state = TPM_TIS_STATE_COMPLETION;