5e4c7cf60e
PSID is a 32 character password printed on the drive label, to prove its physical access. This PSID reverttper function is very useful to regain the control over the drive when it is locked and the user can no longer access it because of some failures. However, *all the data on the drive is completely erased*. This method is advisable only when the user is exhausted of all other recovery methods. PSID capabilities are described in: https://trustedcomputinggroup.org/wp-content/uploads/TCG_Storage-Opal_Feature_Set_PSID_v1.00_r1.00.pdf Signed-off-by: Revanth Rajashekar <revanth.rajashekar@intel.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Copyright © 2016 Intel Corporation
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*
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* Authors:
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* Rafael Antognolli <rafael.antognolli@intel.com>
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* Scott Bauer <scott.bauer@intel.com>
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*/
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#ifndef LINUX_OPAL_H
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#define LINUX_OPAL_H
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#include <uapi/linux/sed-opal.h>
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#include <linux/kernel.h>
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struct opal_dev;
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typedef int (sec_send_recv)(void *data, u16 spsp, u8 secp, void *buffer,
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size_t len, bool send);
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#ifdef CONFIG_BLK_SED_OPAL
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void free_opal_dev(struct opal_dev *dev);
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bool opal_unlock_from_suspend(struct opal_dev *dev);
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struct opal_dev *init_opal_dev(void *data, sec_send_recv *send_recv);
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int sed_ioctl(struct opal_dev *dev, unsigned int cmd, void __user *ioctl_ptr);
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static inline bool is_sed_ioctl(unsigned int cmd)
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{
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switch (cmd) {
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case IOC_OPAL_SAVE:
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case IOC_OPAL_LOCK_UNLOCK:
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case IOC_OPAL_TAKE_OWNERSHIP:
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case IOC_OPAL_ACTIVATE_LSP:
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case IOC_OPAL_SET_PW:
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case IOC_OPAL_ACTIVATE_USR:
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case IOC_OPAL_REVERT_TPR:
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case IOC_OPAL_LR_SETUP:
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case IOC_OPAL_ADD_USR_TO_LR:
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case IOC_OPAL_ENABLE_DISABLE_MBR:
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case IOC_OPAL_ERASE_LR:
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case IOC_OPAL_SECURE_ERASE_LR:
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case IOC_OPAL_PSID_REVERT_TPR:
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return true;
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}
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return false;
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}
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#else
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static inline void free_opal_dev(struct opal_dev *dev)
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{
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}
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static inline bool is_sed_ioctl(unsigned int cmd)
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{
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return false;
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}
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static inline int sed_ioctl(struct opal_dev *dev, unsigned int cmd,
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void __user *ioctl_ptr)
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{
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return 0;
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}
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static inline bool opal_unlock_from_suspend(struct opal_dev *dev)
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{
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return false;
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}
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#define init_opal_dev(data, send_recv) NULL
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#endif /* CONFIG_BLK_SED_OPAL */
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#endif /* LINUX_OPAL_H */
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