libnvme(9) API Manual libnvme(9)

# [NAME](#NAME)

struct tcg\_l0\_block\_sid\_auth - Block SID Authentication feature (0x0402)

# [SYNOPSIS](#SYNOPSIS)

struct tcg\_l0\_block\_sid\_auth {  
**\_\_u8 states;**  
**\_\_u8 hw\_reset;**  
};

# [Members](#Members)

[states](#states)

States, see *enum tcg\_l0\_block\_sid\_states*

[hw\_reset](#hw_reset)

Hardware reset, see *enum tcg\_l0\_block\_sid\_hw\_reset*

# [Description](#Description)

TCG Storage Feature Set: Block SID Authentication, section 4.1.1.

struct tcg\_l0\_block\_sid\_auth October 2026

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Document: tcg_l0_block_sid_auth-libnvme3(2) from nvme-cli 3.2-r0 (Chainguard OS)
Source: https://github.com/linux-nvme/nvme-cli