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Move TPM passthrough specific command line options to backend structure

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Move the TPM passthrough specific command line options to the passthrough
backend implementation and attach them to the backend's interface structure.

Add code to tpm.c for validating the TPM command line options.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Corey Bryan <coreyb@linux.vnet.ibm.com>
Message-id: 1366641699-21420-1-git-send-email-stefanb@linux.vnet.ibm.com
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Stefan Berger 2013-04-22 10:41:39 -04:00 committed by Anthony Liguori
parent 13daf6cad0
commit bb71623811
5 changed files with 33 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
hw/tpm/tpm_int.h
View file

@ -33,6 +33,13 @@ struct TPMState {
#define TPM(obj) OBJECT_CHECK(TPMState, (obj), TYPE_TPM_TIS)
#define TPM_STANDARD_CMDLINE_OPTS \
{ \
.name = "type", \
.type = QEMU_OPT_STRING, \
.help = "Type of TPM backend", \
}
struct tpm_req_hdr {
uint16_t tag;
uint32_t len;

16
hw/tpm/tpm_passthrough.c
View file

@ -488,8 +488,24 @@ static void tpm_passthrough_destroy(TPMBackend *tb)
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,

1
include/sysemu/tpm_backend.h
View file

@ -65,6 +65,7 @@ typedef struct TPMSizedBuffer {
struct TPMDriverOps {
enum TpmType type;
const QemuOptDesc *opts;
/* get a descriptive text of the backend to display to the user */
const char *(*desc)(void);

8
tpm.c
View file

@ -159,6 +159,14 @@ static int configure_tpm(QemuOpts *opts)
return 1;
}
/* validate backend specific opts */
qemu_opts_validate(opts, be->opts, &local_err);
if (error_is_set(&local_err)) {
qerror_report_err(local_err);
error_free(local_err);
return 1;
}
drv = be->create(opts, id);
if (!drv) {
return 1;

16
vl.c
View file

@ -502,21 +502,7 @@ static QemuOptsList qemu_tpmdev_opts = {
.implied_opt_name = "type",
.head = QTAILQ_HEAD_INITIALIZER(qemu_tpmdev_opts.head),
.desc = {
{
.name = "type",
.type = QEMU_OPT_STRING,
.help = "Type of TPM backend",
},
{
.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",
},
/* options are defined in the TPM backends */
{ /* end of list */ }
},
};