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authorRajithaY <rajithax.yerrumsetty@intel.com>2017-04-25 03:31:15 -0700
committerRajitha Yerrumchetty <rajithax.yerrumsetty@intel.com>2017-05-22 06:48:08 +0000
commitbb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch)
treeca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/hw/tpm/tpm_passthrough.c
parenta14b48d18a9ed03ec191cf16b162206998a895ce (diff)
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to kvmfornfv repo and make use of the updated latest qemu for the execution of all testcase Change-Id: I1280af507a857675c7f81d30c95255635667bdd7 Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/hw/tpm/tpm_passthrough.c')
-rw-r--r--qemu/hw/tpm/tpm_passthrough.c566
1 files changed, 0 insertions, 566 deletions
diff --git a/qemu/hw/tpm/tpm_passthrough.c b/qemu/hw/tpm/tpm_passthrough.c
deleted file mode 100644
index e88c0d20b..000000000
--- a/qemu/hw/tpm/tpm_passthrough.c
+++ /dev/null
@@ -1,566 +0,0 @@
-/*
- * passthrough TPM driver
- *
- * Copyright (c) 2010 - 2013 IBM Corporation
- * Authors:
- * Stefan Berger <stefanb@us.ibm.com>
- *
- * Copyright (C) 2011 IAIK, Graz University of Technology
- * Author: Andreas Niederl
- *
- * This library 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; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>
- */
-
-#include "qemu/osdep.h"
-#include "qemu-common.h"
-#include "qemu/error-report.h"
-#include "qemu/sockets.h"
-#include "sysemu/tpm_backend.h"
-#include "tpm_int.h"
-#include "hw/hw.h"
-#include "hw/i386/pc.h"
-#include "sysemu/tpm_backend_int.h"
-#include "tpm_tis.h"
-#include "tpm_util.h"
-
-#define DEBUG_TPM 0
-
-#define DPRINTF(fmt, ...) do { \
- if (DEBUG_TPM) { \
- fprintf(stderr, fmt, ## __VA_ARGS__); \
- } \
-} while (0);
-
-#define TYPE_TPM_PASSTHROUGH "tpm-passthrough"
-#define TPM_PASSTHROUGH(obj) \
- OBJECT_CHECK(TPMPassthruState, (obj), TYPE_TPM_PASSTHROUGH)
-
-static const TPMDriverOps tpm_passthrough_driver;
-
-/* data structures */
-typedef struct TPMPassthruThreadParams {
- TPMState *tpm_state;
-
- TPMRecvDataCB *recv_data_callback;
- TPMBackend *tb;
-} TPMPassthruThreadParams;
-
-struct TPMPassthruState {
- TPMBackend parent;
-
- TPMBackendThread tbt;
-
- TPMPassthruThreadParams tpm_thread_params;
-
- char *tpm_dev;
- int tpm_fd;
- bool tpm_executing;
- bool tpm_op_canceled;
- int cancel_fd;
- bool had_startup_error;
-
- TPMVersion tpm_version;
-};
-
-typedef struct TPMPassthruState TPMPassthruState;
-
-#define TPM_PASSTHROUGH_DEFAULT_DEVICE "/dev/tpm0"
-
-/* functions */
-
-static void tpm_passthrough_cancel_cmd(TPMBackend *tb);
-
-static int tpm_passthrough_unix_write(int fd, const uint8_t *buf, uint32_t len)
-{
- int ret, remain;
-
- remain = len;
- while (remain > 0) {
- ret = write(fd, buf, remain);
- if (ret < 0) {
- if (errno != EINTR && errno != EAGAIN) {
- return -1;
- }
- } else if (ret == 0) {
- break;
- } else {
- buf += ret;
- remain -= ret;
- }
- }
- return len - remain;
-}
-
-static int tpm_passthrough_unix_read(int fd, uint8_t *buf, uint32_t len)
-{
- int ret;
- reread:
- ret = read(fd, buf, len);
- if (ret < 0) {
- if (errno != EINTR && errno != EAGAIN) {
- return -1;
- }
- goto reread;
- }
- return ret;
-}
-
-static uint32_t tpm_passthrough_get_size_from_buffer(const uint8_t *buf)
-{
- struct tpm_resp_hdr *resp = (struct tpm_resp_hdr *)buf;
-
- return be32_to_cpu(resp->len);
-}
-
-/*
- * Write an error message in the given output buffer.
- */
-static void tpm_write_fatal_error_response(uint8_t *out, uint32_t out_len)
-{
- if (out_len >= sizeof(struct tpm_resp_hdr)) {
- struct tpm_resp_hdr *resp = (struct tpm_resp_hdr *)out;
-
- resp->tag = cpu_to_be16(TPM_TAG_RSP_COMMAND);
- resp->len = cpu_to_be32(sizeof(struct tpm_resp_hdr));
- resp->errcode = cpu_to_be32(TPM_FAIL);
- }
-}
-
-static bool tpm_passthrough_is_selftest(const uint8_t *in, uint32_t in_len)
-{
- struct tpm_req_hdr *hdr = (struct tpm_req_hdr *)in;
-
- if (in_len >= sizeof(*hdr)) {
- return (be32_to_cpu(hdr->ordinal) == TPM_ORD_ContinueSelfTest);
- }
-
- return false;
-}
-
-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)
-{
- int ret;
- bool is_selftest;
- const struct tpm_resp_hdr *hdr;
-
- tpm_pt->tpm_op_canceled = false;
- tpm_pt->tpm_executing = true;
- *selftest_done = false;
-
- is_selftest = tpm_passthrough_is_selftest(in, in_len);
-
- ret = tpm_passthrough_unix_write(tpm_pt->tpm_fd, in, in_len);
- if (ret != in_len) {
- if (!tpm_pt->tpm_op_canceled ||
- (tpm_pt->tpm_op_canceled && errno != ECANCELED)) {
- error_report("tpm_passthrough: error while transmitting data "
- "to TPM: %s (%i)",
- strerror(errno), errno);
- }
- goto err_exit;
- }
-
- tpm_pt->tpm_executing = false;
-
- ret = tpm_passthrough_unix_read(tpm_pt->tpm_fd, out, out_len);
- if (ret < 0) {
- if (!tpm_pt->tpm_op_canceled ||
- (tpm_pt->tpm_op_canceled && errno != ECANCELED)) {
- error_report("tpm_passthrough: error while reading data from "
- "TPM: %s (%i)",
- strerror(errno), errno);
- }
- } else if (ret < sizeof(struct tpm_resp_hdr) ||
- tpm_passthrough_get_size_from_buffer(out) != ret) {
- ret = -1;
- error_report("tpm_passthrough: received invalid response "
- "packet from TPM");
- }
-
- if (is_selftest && (ret >= sizeof(struct tpm_resp_hdr))) {
- hdr = (struct tpm_resp_hdr *)out;
- *selftest_done = (be32_to_cpu(hdr->errcode) == 0);
- }
-
-err_exit:
- if (ret < 0) {
- tpm_write_fatal_error_response(out, out_len);
- }
-
- tpm_pt->tpm_executing = false;
-
- return ret;
-}
-
-static int tpm_passthrough_unix_transfer(TPMPassthruState *tpm_pt,
- const TPMLocality *locty_data,
- bool *selftest_done)
-{
- return tpm_passthrough_unix_tx_bufs(tpm_pt,
- locty_data->w_buffer.buffer,
- locty_data->w_offset,
- locty_data->r_buffer.buffer,
- locty_data->r_buffer.size,
- selftest_done);
-}
-
-static void tpm_passthrough_worker_thread(gpointer data,
- gpointer user_data)
-{
- TPMPassthruThreadParams *thr_parms = user_data;
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(thr_parms->tb);
- TPMBackendCmd cmd = (TPMBackendCmd)data;
- bool selftest_done = false;
-
- DPRINTF("tpm_passthrough: processing command type %d\n", cmd);
-
- switch (cmd) {
- case TPM_BACKEND_CMD_PROCESS_CMD:
- tpm_passthrough_unix_transfer(tpm_pt,
- thr_parms->tpm_state->locty_data,
- &selftest_done);
-
- thr_parms->recv_data_callback(thr_parms->tpm_state,
- thr_parms->tpm_state->locty_number,
- selftest_done);
- break;
- case TPM_BACKEND_CMD_INIT:
- case TPM_BACKEND_CMD_END:
- case TPM_BACKEND_CMD_TPM_RESET:
- /* nothing to do */
- break;
- }
-}
-
-/*
- * Start the TPM (thread). If it had been started before, then terminate
- * and start it again.
- */
-static int tpm_passthrough_startup_tpm(TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- /* terminate a running TPM */
- tpm_backend_thread_end(&tpm_pt->tbt);
-
- tpm_backend_thread_create(&tpm_pt->tbt,
- tpm_passthrough_worker_thread,
- &tpm_pt->tpm_thread_params);
-
- return 0;
-}
-
-static void tpm_passthrough_reset(TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- DPRINTF("tpm_passthrough: CALL TO TPM_RESET!\n");
-
- tpm_passthrough_cancel_cmd(tb);
-
- tpm_backend_thread_end(&tpm_pt->tbt);
-
- tpm_pt->had_startup_error = false;
-}
-
-static int tpm_passthrough_init(TPMBackend *tb, TPMState *s,
- TPMRecvDataCB *recv_data_cb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- tpm_pt->tpm_thread_params.tpm_state = s;
- tpm_pt->tpm_thread_params.recv_data_callback = recv_data_cb;
- tpm_pt->tpm_thread_params.tb = tb;
-
- return 0;
-}
-
-static bool tpm_passthrough_get_tpm_established_flag(TPMBackend *tb)
-{
- return false;
-}
-
-static int tpm_passthrough_reset_tpm_established_flag(TPMBackend *tb,
- uint8_t locty)
-{
- /* only a TPM 2.0 will support this */
- return 0;
-}
-
-static bool tpm_passthrough_get_startup_error(TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- return tpm_pt->had_startup_error;
-}
-
-static size_t tpm_passthrough_realloc_buffer(TPMSizedBuffer *sb)
-{
- size_t wanted_size = 4096; /* Linux tpm.c buffer size */
-
- if (sb->size != wanted_size) {
- sb->buffer = g_realloc(sb->buffer, wanted_size);
- sb->size = wanted_size;
- }
- return sb->size;
-}
-
-static void tpm_passthrough_deliver_request(TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- tpm_backend_thread_deliver_request(&tpm_pt->tbt);
-}
-
-static void tpm_passthrough_cancel_cmd(TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
- int n;
-
- /*
- * As of Linux 3.7 the tpm_tis driver does not properly cancel
- * commands on all TPM manufacturers' TPMs.
- * Only cancel if we're busy so we don't cancel someone else's
- * command, e.g., a command executed on the host.
- */
- if (tpm_pt->tpm_executing) {
- if (tpm_pt->cancel_fd >= 0) {
- n = write(tpm_pt->cancel_fd, "-", 1);
- if (n != 1) {
- error_report("Canceling TPM command failed: %s",
- strerror(errno));
- } else {
- tpm_pt->tpm_op_canceled = true;
- }
- } else {
- error_report("Cannot cancel TPM command due to missing "
- "TPM sysfs cancel entry");
- }
- }
-}
-
-static const char *tpm_passthrough_create_desc(void)
-{
- return "Passthrough TPM backend driver";
-}
-
-static TPMVersion tpm_passthrough_get_tpm_version(TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- return tpm_pt->tpm_version;
-}
-
-/*
- * Unless path or file descriptor set has been provided by user,
- * determine the sysfs cancel file following kernel documentation
- * 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)
-{
- 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 (fd < 0) {
- error_report("Could not open TPM cancel path : %s",
- strerror(errno));
- }
- return fd;
- }
-
- dev = strrchr(tpm_pt->tpm_dev, '/');
- if (dev) {
- dev++;
- if (snprintf(path, sizeof(path), "/sys/class/misc/%s/device/cancel",
- dev) < sizeof(path)) {
- fd = qemu_open(path, O_WRONLY);
- if (fd >= 0) {
- tb->cancel_path = g_strdup(path);
- } else {
- error_report("tpm_passthrough: Could not open TPM cancel "
- "path %s : %s", path, strerror(errno));
- }
- }
- } else {
- error_report("tpm_passthrough: Bad TPM device path %s",
- tpm_pt->tpm_dev);
- }
-
- return fd;
-}
-
-static int tpm_passthrough_handle_device_opts(QemuOpts *opts, TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
- const char *value;
-
- value = qemu_opt_get(opts, "cancel-path");
- tb->cancel_path = g_strdup(value);
-
- value = qemu_opt_get(opts, "path");
- if (!value) {
- value = TPM_PASSTHROUGH_DEFAULT_DEVICE;
- }
-
- tpm_pt->tpm_dev = g_strdup(value);
-
- tb->path = g_strdup(tpm_pt->tpm_dev);
-
- 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",
- tpm_pt->tpm_dev, strerror(errno));
- goto err_free_parameters;
- }
-
- if (tpm_util_test_tpmdev(tpm_pt->tpm_fd, &tpm_pt->tpm_version)) {
- error_report("'%s' is not a TPM device.",
- tpm_pt->tpm_dev);
- goto err_close_tpmdev;
- }
-
- return 0;
-
- err_close_tpmdev:
- qemu_close(tpm_pt->tpm_fd);
- tpm_pt->tpm_fd = -1;
-
- err_free_parameters:
- g_free(tb->path);
- tb->path = NULL;
-
- g_free(tpm_pt->tpm_dev);
- tpm_pt->tpm_dev = NULL;
-
- return 1;
-}
-
-static TPMBackend *tpm_passthrough_create(QemuOpts *opts, const char *id)
-{
- Object *obj = object_new(TYPE_TPM_PASSTHROUGH);
- TPMBackend *tb = TPM_BACKEND(obj);
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- tb->id = g_strdup(id);
- /* let frontend set the fe_model to proper value */
- tb->fe_model = -1;
-
- tb->ops = &tpm_passthrough_driver;
-
- if (tpm_passthrough_handle_device_opts(opts, tb)) {
- goto err_exit;
- }
-
- tpm_pt->cancel_fd = tpm_passthrough_open_sysfs_cancel(tb);
- if (tpm_pt->cancel_fd < 0) {
- goto err_exit;
- }
-
- return tb;
-
-err_exit:
- g_free(tb->id);
-
- return NULL;
-}
-
-static void tpm_passthrough_destroy(TPMBackend *tb)
-{
- TPMPassthruState *tpm_pt = TPM_PASSTHROUGH(tb);
-
- tpm_passthrough_cancel_cmd(tb);
-
- tpm_backend_thread_end(&tpm_pt->tbt);
-
- qemu_close(tpm_pt->tpm_fd);
- qemu_close(tpm_pt->cancel_fd);
-
- g_free(tb->id);
- g_free(tb->path);
- g_free(tb->cancel_path);
- g_free(tpm_pt->tpm_dev);
-}
-
-static const QemuOptDesc tpm_passthrough_cmdline_opts[] = {
- TPM_STANDARD_CMDLINE_OPTS,
- {
- .name = "cancel-path",
- .type = QEMU_OPT_STRING,
- .help = "Sysfs file entry for canceling TPM commands",
- },
- {
- .name = "path",
- .type = QEMU_OPT_STRING,
- .help = "Path to TPM device on the host",
- },
- { /* end of list */ },
-};
-
-static const TPMDriverOps tpm_passthrough_driver = {
- .type = TPM_TYPE_PASSTHROUGH,
- .opts = tpm_passthrough_cmdline_opts,
- .desc = tpm_passthrough_create_desc,
- .create = tpm_passthrough_create,
- .destroy = tpm_passthrough_destroy,
- .init = tpm_passthrough_init,
- .startup_tpm = tpm_passthrough_startup_tpm,
- .realloc_buffer = tpm_passthrough_realloc_buffer,
- .reset = tpm_passthrough_reset,
- .had_startup_error = tpm_passthrough_get_startup_error,
- .deliver_request = tpm_passthrough_deliver_request,
- .cancel_cmd = tpm_passthrough_cancel_cmd,
- .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,
-};
-
-static void tpm_passthrough_inst_init(Object *obj)
-{
-}
-
-static void tpm_passthrough_inst_finalize(Object *obj)
-{
-}
-
-static void tpm_passthrough_class_init(ObjectClass *klass, void *data)
-{
- TPMBackendClass *tbc = TPM_BACKEND_CLASS(klass);
-
- tbc->ops = &tpm_passthrough_driver;
-}
-
-static const TypeInfo tpm_passthrough_info = {
- .name = TYPE_TPM_PASSTHROUGH,
- .parent = TYPE_TPM_BACKEND,
- .instance_size = sizeof(TPMPassthruState),
- .class_init = tpm_passthrough_class_init,
- .instance_init = tpm_passthrough_inst_init,
- .instance_finalize = tpm_passthrough_inst_finalize,
-};
-
-static void tpm_passthrough_register(void)
-{
- type_register_static(&tpm_passthrough_info);
- tpm_register_driver(&tpm_passthrough_driver);
-}
-
-type_init(tpm_passthrough_register)