From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Jason Gunthorpe <jgg@ziepe.ca>
Cc: David Howells <dhowells@redhat.com>,
denkenz@gmail.com, jejb@linux.vnet.ibm.com,
keyrings@vger.kernel.org, linux-integrity@vger.kernel.org,
tpmdd-devel@lists.sourceforge.net,
linux-security-module@vger.kernel.org
Subject: Re: [PATCH 02/23] TPM: Provide a facility for a userspace TPM emulator
Date: Fri, 24 Aug 2018 06:29:14 +0000 [thread overview]
Message-ID: <20180824062914.GD3584@linux.intel.com> (raw)
In-Reply-To: <20180821183140.GD25543@ziepe.ca>
On Tue, Aug 21, 2018 at 12:31:40PM -0600, Jason Gunthorpe wrote:
> On Tue, Aug 21, 2018 at 04:57:03PM +0100, David Howells wrote:
> > Provide a misc device file (/dev/tpm_emul) by which a userspace TPM emulator
> > can set up a virtual TPM device under the control of the TPM frontend. The
> > way this works is:
> >
> > (1) The emulator opens /dev/tpm_emul which is provided by the tpm_user
> > driver.
> >
> > (2) tpm_user registers a TPM device and the tpm driver creates a /dev/tpmN
> > misc device for the trousers package and suchlike to access.
> >
> > (3) The emulator sits in read() on the emulator device waiting for a command
> > to come through.
> >
> > (4) tpm_user passes requests from /dev/tpmN to the emulator's read() call.
> >
> > (5) The emulator processes the request.
> >
> > (6) The emulator either write()'s the reply or calls ioctl(fd,0,0) to cancel
> > the command.
> >
> > (7) The emulator goes back to read() to wait for the next command.
> >
> > (8) tpm_user passes the reply back to the tpm driver which passes it back to
> > /dev/tpmN.
> >
> > When the emulator closes /dev/tpm_emul, the TPM driver is unregistered and the
> > /dev/tpmN misc device is then removed. Any outstanding requests are aborted
> > and -EIO will be returned from then on. Multiple TPMs can be registered.
> >
> > Signed-off-by: David Howells <dhowells@redhat.com>
> > ---
> >
> > drivers/char/tpm/Kconfig | 13 +
> > drivers/char/tpm/Makefile | 1
> > drivers/char/tpm/tpm_user_emul.c | 672 ++++++++++++++++++++++++++++++++++++++
> > include/linux/wait.h | 11 +
> > 4 files changed, 697 insertions(+)
> > create mode 100644 drivers/char/tpm/tpm_user_emul.c
>
> This looks to duplicate the vtpm stuff...
Yeah, this is a duplicate to tpm_vtpm_proxy.
>
> Jason
/Jarkko
WARNING: multiple messages have this Message-ID (diff)
From: jarkko.sakkinen@linux.intel.com (Jarkko Sakkinen)
To: linux-security-module@vger.kernel.org
Subject: [PATCH 02/23] TPM: Provide a facility for a userspace TPM emulator
Date: Fri, 24 Aug 2018 09:29:14 +0300 [thread overview]
Message-ID: <20180824062914.GD3584@linux.intel.com> (raw)
In-Reply-To: <20180821183140.GD25543@ziepe.ca>
On Tue, Aug 21, 2018 at 12:31:40PM -0600, Jason Gunthorpe wrote:
> On Tue, Aug 21, 2018 at 04:57:03PM +0100, David Howells wrote:
> > Provide a misc device file (/dev/tpm_emul) by which a userspace TPM emulator
> > can set up a virtual TPM device under the control of the TPM frontend. The
> > way this works is:
> >
> > (1) The emulator opens /dev/tpm_emul which is provided by the tpm_user
> > driver.
> >
> > (2) tpm_user registers a TPM device and the tpm driver creates a /dev/tpmN
> > misc device for the trousers package and suchlike to access.
> >
> > (3) The emulator sits in read() on the emulator device waiting for a command
> > to come through.
> >
> > (4) tpm_user passes requests from /dev/tpmN to the emulator's read() call.
> >
> > (5) The emulator processes the request.
> >
> > (6) The emulator either write()'s the reply or calls ioctl(fd,0,0) to cancel
> > the command.
> >
> > (7) The emulator goes back to read() to wait for the next command.
> >
> > (8) tpm_user passes the reply back to the tpm driver which passes it back to
> > /dev/tpmN.
> >
> > When the emulator closes /dev/tpm_emul, the TPM driver is unregistered and the
> > /dev/tpmN misc device is then removed. Any outstanding requests are aborted
> > and -EIO will be returned from then on. Multiple TPMs can be registered.
> >
> > Signed-off-by: David Howells <dhowells@redhat.com>
> > ---
> >
> > drivers/char/tpm/Kconfig | 13 +
> > drivers/char/tpm/Makefile | 1
> > drivers/char/tpm/tpm_user_emul.c | 672 ++++++++++++++++++++++++++++++++++++++
> > include/linux/wait.h | 11 +
> > 4 files changed, 697 insertions(+)
> > create mode 100644 drivers/char/tpm/tpm_user_emul.c
>
> This looks to duplicate the vtpm stuff...
Yeah, this is a duplicate to tpm_vtpm_proxy.
>
> Jason
/Jarkko
WARNING: multiple messages have this Message-ID (diff)
From: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
To: Jason Gunthorpe <jgg@ziepe.ca>
Cc: David Howells <dhowells@redhat.com>,
denkenz@gmail.com, jejb@linux.vnet.ibm.com,
keyrings@vger.kernel.org, linux-integrity@vger.kernel.org,
tpmdd-devel@lists.sourceforge.net,
linux-security-module@vger.kernel.org
Subject: Re: [PATCH 02/23] TPM: Provide a facility for a userspace TPM emulator
Date: Fri, 24 Aug 2018 09:29:14 +0300 [thread overview]
Message-ID: <20180824062914.GD3584@linux.intel.com> (raw)
In-Reply-To: <20180821183140.GD25543@ziepe.ca>
On Tue, Aug 21, 2018 at 12:31:40PM -0600, Jason Gunthorpe wrote:
> On Tue, Aug 21, 2018 at 04:57:03PM +0100, David Howells wrote:
> > Provide a misc device file (/dev/tpm_emul) by which a userspace TPM emulator
> > can set up a virtual TPM device under the control of the TPM frontend. The
> > way this works is:
> >
> > (1) The emulator opens /dev/tpm_emul which is provided by the tpm_user
> > driver.
> >
> > (2) tpm_user registers a TPM device and the tpm driver creates a /dev/tpmN
> > misc device for the trousers package and suchlike to access.
> >
> > (3) The emulator sits in read() on the emulator device waiting for a command
> > to come through.
> >
> > (4) tpm_user passes requests from /dev/tpmN to the emulator's read() call.
> >
> > (5) The emulator processes the request.
> >
> > (6) The emulator either write()'s the reply or calls ioctl(fd,0,0) to cancel
> > the command.
> >
> > (7) The emulator goes back to read() to wait for the next command.
> >
> > (8) tpm_user passes the reply back to the tpm driver which passes it back to
> > /dev/tpmN.
> >
> > When the emulator closes /dev/tpm_emul, the TPM driver is unregistered and the
> > /dev/tpmN misc device is then removed. Any outstanding requests are aborted
> > and -EIO will be returned from then on. Multiple TPMs can be registered.
> >
> > Signed-off-by: David Howells <dhowells@redhat.com>
> > ---
> >
> > drivers/char/tpm/Kconfig | 13 +
> > drivers/char/tpm/Makefile | 1
> > drivers/char/tpm/tpm_user_emul.c | 672 ++++++++++++++++++++++++++++++++++++++
> > include/linux/wait.h | 11 +
> > 4 files changed, 697 insertions(+)
> > create mode 100644 drivers/char/tpm/tpm_user_emul.c
>
> This looks to duplicate the vtpm stuff...
Yeah, this is a duplicate to tpm_vtpm_proxy.
>
> Jason
/Jarkko
WARNING: multiple messages have this Message-ID (diff)
From: Jarkko Sakkinen <jarkko.sakkinen-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: Jason Gunthorpe <jgg-uk2M96/98Pc@public.gmane.org>
Cc: David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
linux-security-module-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
tpmdd-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
keyrings-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-integrity-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
denkenz-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Subject: Re: [PATCH 02/23] TPM: Provide a facility for a userspace TPM emulator
Date: Fri, 24 Aug 2018 09:29:14 +0300 [thread overview]
Message-ID: <20180824062914.GD3584@linux.intel.com> (raw)
In-Reply-To: <20180821183140.GD25543-uk2M96/98Pc@public.gmane.org>
On Tue, Aug 21, 2018 at 12:31:40PM -0600, Jason Gunthorpe wrote:
> On Tue, Aug 21, 2018 at 04:57:03PM +0100, David Howells wrote:
> > Provide a misc device file (/dev/tpm_emul) by which a userspace TPM emulator
> > can set up a virtual TPM device under the control of the TPM frontend. The
> > way this works is:
> >
> > (1) The emulator opens /dev/tpm_emul which is provided by the tpm_user
> > driver.
> >
> > (2) tpm_user registers a TPM device and the tpm driver creates a /dev/tpmN
> > misc device for the trousers package and suchlike to access.
> >
> > (3) The emulator sits in read() on the emulator device waiting for a command
> > to come through.
> >
> > (4) tpm_user passes requests from /dev/tpmN to the emulator's read() call.
> >
> > (5) The emulator processes the request.
> >
> > (6) The emulator either write()'s the reply or calls ioctl(fd,0,0) to cancel
> > the command.
> >
> > (7) The emulator goes back to read() to wait for the next command.
> >
> > (8) tpm_user passes the reply back to the tpm driver which passes it back to
> > /dev/tpmN.
> >
> > When the emulator closes /dev/tpm_emul, the TPM driver is unregistered and the
> > /dev/tpmN misc device is then removed. Any outstanding requests are aborted
> > and -EIO will be returned from then on. Multiple TPMs can be registered.
> >
> > Signed-off-by: David Howells <dhowells-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
> > ---
> >
> > drivers/char/tpm/Kconfig | 13 +
> > drivers/char/tpm/Makefile | 1
> > drivers/char/tpm/tpm_user_emul.c | 672 ++++++++++++++++++++++++++++++++++++++
> > include/linux/wait.h | 11 +
> > 4 files changed, 697 insertions(+)
> > create mode 100644 drivers/char/tpm/tpm_user_emul.c
>
> This looks to duplicate the vtpm stuff...
Yeah, this is a duplicate to tpm_vtpm_proxy.
>
> Jason
/Jarkko
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next prev parent reply other threads:[~2018-08-24 6:29 UTC|newest]
Thread overview: 168+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-21 15:56 tpm: Provide a TPM access library David Howells
2018-08-21 15:56 ` David Howells
2018-08-21 15:56 ` David Howells
2018-08-21 15:56 ` David Howells
2018-08-21 15:56 ` [PATCH 01/23] TPM: Add new TPMs to the tail of the list to prevent inadvertent change of dev David Howells
2018-08-21 15:56 ` David Howells
2018-08-21 15:56 ` David Howells
2018-08-21 15:56 ` David Howells
2018-08-21 18:30 ` Jason Gunthorpe
2018-08-21 18:30 ` Jason Gunthorpe
2018-08-21 18:30 ` Jason Gunthorpe
2018-08-21 18:30 ` Jason Gunthorpe
2018-08-24 6:24 ` Jarkko Sakkinen
2018-08-24 6:24 ` Jarkko Sakkinen
2018-08-24 6:24 ` Jarkko Sakkinen
2018-08-24 6:24 ` Jarkko Sakkinen
2018-08-24 6:25 ` Jarkko Sakkinen
2018-08-24 6:25 ` Jarkko Sakkinen
2018-08-24 6:25 ` Jarkko Sakkinen
2018-08-24 6:25 ` Jarkko Sakkinen
2018-08-24 11:22 ` Mimi Zohar
2018-08-24 11:22 ` Mimi Zohar
2018-08-24 11:22 ` Mimi Zohar
2018-08-24 11:22 ` Mimi Zohar
2018-08-24 6:19 ` Jarkko Sakkinen
2018-08-24 6:19 ` Jarkko Sakkinen
2018-08-24 6:19 ` Jarkko Sakkinen
2018-08-24 6:19 ` Jarkko Sakkinen
2018-08-21 15:57 ` [PATCH 02/23] TPM: Provide a facility for a userspace TPM emulator David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 18:31 ` Jason Gunthorpe
2018-08-21 18:31 ` Jason Gunthorpe
2018-08-21 18:31 ` Jason Gunthorpe
2018-08-21 18:31 ` Jason Gunthorpe
2018-08-24 6:29 ` Jarkko Sakkinen [this message]
2018-08-24 6:29 ` Jarkko Sakkinen
2018-08-24 6:29 ` Jarkko Sakkinen
2018-08-24 6:29 ` Jarkko Sakkinen
2018-08-21 15:57 ` [PATCH 03/23] TPM: Provide a platform driver for the user emulator driver David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-24 6:30 ` Jarkko Sakkinen
2018-08-24 6:30 ` Jarkko Sakkinen
2018-08-24 6:30 ` Jarkko Sakkinen
2018-08-24 6:30 ` Jarkko Sakkinen
2018-08-21 15:57 ` [PATCH 04/23] TPM: Expose struct tpm_chip and related find_get and put functions David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 18:31 ` Jason Gunthorpe
2018-08-21 18:31 ` Jason Gunthorpe
2018-08-21 18:31 ` Jason Gunthorpe
2018-08-21 18:31 ` Jason Gunthorpe
2018-08-21 18:35 ` David Howells
2018-08-21 18:35 ` David Howells
2018-08-21 18:35 ` David Howells
2018-08-21 18:35 ` David Howells
2018-08-21 15:57 ` [PATCH 05/23] TPM: Use struct tpm_chip rather than chip number as interface parameter David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-24 7:42 ` Jarkko Sakkinen
2018-08-24 7:42 ` Jarkko Sakkinen
2018-08-24 7:42 ` Jarkko Sakkinen
2018-08-24 7:42 ` Jarkko Sakkinen
2018-08-21 15:57 ` [PATCH 06/23] TPM: Move ordinal values from interface file to header with other ordinals David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` [PATCH 07/23] TPM: Consolidate tpm_send(), transmit_cmd() and tpm_transmit() David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` [PATCH 08/23] TPMLIB: Break TPM bits out of security/keys/trusted.c David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-24 7:52 ` Jarkko Sakkinen
2018-08-24 7:52 ` Jarkko Sakkinen
2018-08-24 7:52 ` Jarkko Sakkinen
2018-08-24 7:52 ` Jarkko Sakkinen
2018-08-24 8:49 ` Jarkko Sakkinen
2018-08-24 8:49 ` Jarkko Sakkinen
2018-08-24 8:49 ` Jarkko Sakkinen
2018-08-24 8:49 ` Jarkko Sakkinen
2018-08-24 9:33 ` David Howells
2018-08-24 9:33 ` David Howells
2018-08-24 9:33 ` David Howells
2018-08-24 9:33 ` David Howells
2018-08-27 8:25 ` Jarkko Sakkinen
2018-08-27 8:25 ` Jarkko Sakkinen
2018-08-27 8:25 ` Jarkko Sakkinen
2018-08-27 8:25 ` Jarkko Sakkinen
2018-08-21 15:57 ` [PATCH 09/23] TPMLIB: Do some source cleanups David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` [PATCH 10/23] TPMLIB: Better format calls to TSS_*hmac*() David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:57 ` David Howells
2018-08-21 15:58 ` [PATCH 11/23] TPMLIB: Put banner comments on public TPM library functions David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` [PATCH 12/23] TPMLIB: Create tpm_{even, odd}_nonce structs to represent nonces David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` [PATCH 13/23] TPMLIB: Rename store8() and storebytes() David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` [PATCH 14/23] TPMLIB: Make store_s() take a void* data argument, not unsigned char* David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` [PATCH 15/23] TPMLIB: Use __be32 rather than int32_t and use cpu_to_beX() and co David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` [PATCH 16/23] TPMLIB: Put more comments into the HMAC generation functions David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` [PATCH 17/23] TPMLIB: Provide a wrapper to load bytes out of the reply David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` [PATCH 18/23] TPMLIB: Encapsulate XOR-based encryption with authkey derivative David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` [PATCH 19/23] TPMLIB: Add some debugging code David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:58 ` David Howells
2018-08-21 15:59 ` [PATCH 20/23] TPMLIB: Implement call to TPM_CreateWrapKey David Howells
2018-08-21 15:59 ` David Howells
2018-08-21 15:59 ` David Howells
2018-08-21 15:59 ` David Howells
2018-08-21 15:59 ` [PATCH 21/23] TPMLIB: Implement call to TPM_LoadKey2 David Howells
2018-08-21 15:59 ` David Howells
2018-08-21 15:59 ` David Howells
2018-08-21 15:59 ` David Howells
2018-08-21 15:59 ` [PATCH 22/23] TPMLIB: Provide call for TPM_FlushSpecific David Howells
2018-08-21 15:59 ` David Howells
2018-08-21 15:59 ` David Howells
2018-08-21 15:59 ` David Howells
2018-08-21 15:59 ` [PATCH 23/23] TPM: Add an asymmetric key subtype for handling TPM-based keys David Howells
2018-08-21 15:59 ` David Howells
2018-08-21 15:59 ` David Howells
2018-08-21 15:59 ` David Howells
2018-08-22 14:19 ` tpm: Provide a TPM access library Jarkko Sakkinen
2018-08-22 14:19 ` Jarkko Sakkinen
2018-08-22 14:19 ` Jarkko Sakkinen
2018-08-22 14:19 ` Jarkko Sakkinen
2018-08-22 14:45 ` David Howells
2018-08-22 14:45 ` David Howells
2018-08-22 14:45 ` David Howells
2018-08-22 14:45 ` David Howells
2018-08-23 22:49 ` Jarkko Sakkinen
2018-08-23 22:49 ` Jarkko Sakkinen
2018-08-23 22:49 ` Jarkko Sakkinen
2018-08-23 22:49 ` Jarkko Sakkinen
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