12/26/2021»»Sunday

Tpmx Driver

12/26/2021
  1. Tpm Driver Check
  2. Tpm Driver Hp
  3. Tpm Driver Lenovo
  4. Tpm Driver

TPMX Electronics Ltd. Pelutil.dll (Mouse Suite 98 by TPMX Electronics Ltd) pelhooks.dll (Mouse Suite 98 by TPMX Electronics Ltd) pelcomm.dll (Mouse Suite 98 by TPMX Electronics Ltd) pelscrll.dll (MouseSuite 98 by TPMX Electronics Ltd) pelmiced.exe (MouseSuite 98 by TPMX Electronics Ltd). @@ -1,4 +1,4 @@ What: /sys/ devices/pnp0/ /ppi/ What: /sys/ class/tpm/tpmX /ppi/ Date: August 2012: Kernel Version: 3.6: Contact: [email protected] tpmdd-devel PATCH v9 3/3 tpm: update PPI documentation to address the location change. Showing 8,663 changed files with 479,988 additions and 307,974 deletions.


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Tpm Driver Check

Stefan Berger <stefanb@linux.vnet.ibm.com>

This document describes the virtual Trusted Platform Module (vTPM)proxy device driver for Linux containers.

Introduction¶

The goal of this work is to provide TPM functionality to each Linuxcontainer. This allows programs to interact with a TPM in a containerthe same way they interact with a TPM on the physical system. Eachcontainer gets its own unique, emulated, software TPM.

Tpm Driver Hp

Design¶

To make an emulated software TPM available to each container, the containermanagement stack needs to create a device pair consisting of a client TPMcharacter device /dev/tpmX (with X=0,1,2…) and a ‘server side’ filedescriptor. The former is moved into the container by creating a characterdevice with the appropriate major and minor numbers while the file descriptoris passed to the TPM emulator. Software inside the container can then sendTPM commands using the character device and the emulator will receive thecommands via the file descriptor and use it for sending back responses.

To support this, the virtual TPM proxy driver provides a device /dev/vtpmxthat is used to create device pairs using an ioctl. The ioctl takes asan input flags for configuring the device. The flags for example indicatewhether TPM 1.2 or TPM 2 functionality is supported by the TPM emulator.The result of the ioctl are the file descriptor for the ‘server side’as well as the major and minor numbers of the character device that was created.Besides that the number of the TPM character device is returned. If forexample /dev/tpm10 was created, the number (dev_num) 10 is returned.

Once the device has been created, the driver will immediately try to talkto the TPM. All commands from the driver can be read from the file descriptorreturned by the ioctl. The commands should be responded to immediately.

UAPI¶

enum vtpm_proxy_flags

flags for the proxy TPM

Constants

VTPM_PROXY_FLAG_TPM2
the proxy TPM uses TPM 2.0 protocol

Tpm Driver Lenovo

struct vtpm_proxy_new_dev

Tpm Driver

parameter structure for the VTPM_PROXY_IOC_NEW_DEV ioctl

Tpm driver

Definition

Members

flags
flags for the proxy TPM
tpm_num
index of the TPM device
fd
the file descriptor used by the proxy TPM
major
the major number of the TPM device
minor
the minor number of the TPM device
long vtpmx_ioc_new_dev(struct file *file, unsigned int ioctl, unsigned long arg)

handler for the VTPM_PROXY_IOC_NEW_DEV ioctl

Parameters

structfile*file
/dev/vtpmx
unsignedintioctl
the ioctl number
unsignedlongarg
pointer to the struct vtpmx_proxy_new_dev

Description

Creates an anonymous file that is used by the process acting as a TPM tocommunicate with the client processes. The function will also add a new TPMdevice through which data is proxied to this TPM acting process. The callerwill be provided with a file descriptor to communicate with the clients andmajor and minor numbers for the TPM device.