libnvme(9)

💖 NAME 💖

okay bestie, welcome to libnvme(9) — the API Manual page for enum nvme_id_ctrl_oacs, and it’s literally the flag situation for the optional Admin commands and features supported by the controller, see &struct nvme_id_ctrl.oacs. no cap. 💅

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🌟 SYNOPSIS 🌟

here’s the whole enum, exactly as it is, bestie — don’t let the long list scare you:

enum nvme_id_ctrl_oacs {
    NVME_CTRL_OACS_SSRS_SHIFT ,
    NVME_CTRL_OACS_FNVMS_SHIFT ,
    NVME_CTRL_OACS_FWDS_SHIFT ,
    NVME_CTRL_OACS_NMS_SHIFT ,
    NVME_CTRL_OACS_DSTS_SHIFT ,
    NVME_CTRL_OACS_DIRS_SHIFT ,
    NVME_CTRL_OACS_NSRS_SHIFT ,
    NVME_CTRL_OACS_VMS_SHIFT ,
    NVME_CTRL_OACS_DBCS_SHIFT ,
    NVME_CTRL_OACS_GLSS_SHIFT ,
    NVME_CTRL_OACS_CFLS_SHIFT ,
    NVME_CTRL_OACS_HMLMS_SHIFT ,
    NVME_CTRL_OACS_ENSS_SHIFT ,
    NVME_CTRL_OACS_CCFLS_SHIFT ,
    NVME_CTRL_OACS_SSRS_MASK ,
    NVME_CTRL_OACS_FNVMS_MASK ,
    NVME_CTRL_OACS_FWDS_MASK ,
    NVME_CTRL_OACS_NMS_MASK ,
    NVME_CTRL_OACS_DSTS_MASK ,
    NVME_CTRL_OACS_DIRS_MASK ,
    NVME_CTRL_OACS_NSRS_MASK ,
    NVME_CTRL_OACS_VMS_MASK ,
    NVME_CTRL_OACS_DBCS_MASK ,
    NVME_CTRL_OACS_GLSS_MASK ,
    NVME_CTRL_OACS_CFLS_MASK ,
    NVME_CTRL_OACS_HMLMS_MASK ,
    NVME_CTRL_OACS_ENSS_MASK ,
    NVME_CTRL_OACS_CCFLS_MASK ,
    NVME_CTRL_OACS_SSRS ,
    NVME_CTRL_OACS_FNVMS ,
    NVME_CTRL_OACS_FWDS ,
    NVME_CTRL_OACS_NMS ,
    NVME_CTRL_OACS_DSTS ,
    NVME_CTRL_OACS_DIRS ,
    NVME_CTRL_OACS_NSRS ,
    NVME_CTRL_OACS_VMS ,
    NVME_CTRL_OACS_DBCS ,
    NVME_CTRL_OACS_GLSS ,
    NVME_CTRL_OACS_CFLS ,
    NVME_CTRL_OACS_HMLMS ,
    NVME_CTRL_OACS_ENSS ,
    NVME_CTRL_OACS_CCFLS

};

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🎀 Constants 🎀

okay so this is the entire constants crew, in the exact order they show up. shifts first, then masks, then the actual “if set” values — slay. ✨

🌸 Shift amounts 🌸

• NVME_CTRL_OACS_SSRS_SHIFT — Shift amount to get the Security Send Receive supported
• NVME_CTRL_OACS_FNVMS_SHIFT — Shift amount to get the Format NVM supported
• NVME_CTRL_OACS_FWDS_SHIFT — Shift amount to get the Firmware Download supported
• NVME_CTRL_OACS_NMS_SHIFT — Shift amount to get the Namespace Management supported
• NVME_CTRL_OACS_DSTS_SHIFT — Shift amount to get the Device Self-test supported
• NVME_CTRL_OACS_DIRS_SHIFT — Shift amount to get the Directives supported
• NVME_CTRL_OACS_NSRS_SHIFT — Shift amount to get the NVMe-MI Send Receive supported
• NVME_CTRL_OACS_VMS_SHIFT — Shift amount to get the Virtualization Management supported
• NVME_CTRL_OACS_DBCS_SHIFT — Shift amount to get the Doorbell Buffer Config supported
• NVME_CTRL_OACS_GLSS_SHIFT — Shift amount to get the Get LBA Status supported
• NVME_CTRL_OACS_CFLS_SHIFT — Shift amount to get the Command and Feature Lockdown supported
• NVME_CTRL_OACS_HMLMS_SHIFT — Shift amount to get the Host Managed Live Migration support
• NVME_CTRL_OACS_ENSS_SHIFT — Shift amount to get the Exported NVM Subsystem Support
• NVME_CTRL_OACS_CCFLS_SHIFT — Shift amount to get the Controller-scoped Command and Feature Lockdown supported

🦋 Masks 🦋

• NVME_CTRL_OACS_SSRS_MASK — Mask to get the Security Send Receive supported
• NVME_CTRL_OACS_FNVMS_MASK — Mask to get the Format NVM supported
• NVME_CTRL_OACS_FWDS_MASK — Mask to get the Firmware Download supported
• NVME_CTRL_OACS_NMS_MASK — Mask to get the Namespace Management supported
• NVME_CTRL_OACS_DSTS_MASK — Mask to get the Device Self-test supported
• NVME_CTRL_OACS_DIRS_MASK — Mask to get the Directives supported
• NVME_CTRL_OACS_NSRS_MASK — Mask to get the NVMe-MI Send Receive supported
• NVME_CTRL_OACS_VMS_MASK — Mask to get the Virtualization Management supported
• NVME_CTRL_OACS_DBCS_MASK — Mask to get the Doorbell Buffer Config supported
• NVME_CTRL_OACS_GLSS_MASK — Mask to get the Get LBA Status supported
• NVME_CTRL_OACS_CFLS_MASK — Mask to get the Command and Feature Lockdown supported
• NVME_CTRL_OACS_HMLMS_MASK — Mask to get the Host Managed Live Migration support
• NVME_CTRL_OACS_ENSS_MASK — Mask to get the Exported NVM Subsystem Support
• NVME_CTRL_OACS_CCFLS_MASK — Mask to get the Controller-scoped Command and Feature Lockdown supported

👑 “If set” values 👑

• NVME_CTRL_OACS_SSRS — If set, then the controller supports the Security Send and Security Receive commands.
• NVME_CTRL_OACS_FNVMS — If set then the controller supports the Format NVM command.
• NVME_CTRL_OACS_FWDS — If set, then the controller supports the Firmware Commit and Firmware Image Download commands.
• NVME_CTRL_OACS_NMS — If set, then the controller supports the Namespace Management capability
• NVME_CTRL_OACS_DSTS — If set, then the controller supports the Device Self-test command.
• NVME_CTRL_OACS_DIRS — If set, then the controller supports Directives and the Directive Send and Directive Receive commands.
• NVME_CTRL_OACS_NSRS — If set, then the controller supports the NVMe-MI Send and NVMe-MI Receive commands.
• NVME_CTRL_OACS_VMS — If set, then the controller supports the Virtualization Management command.
• NVME_CTRL_OACS_DBCS — If set, then the controller supports the Doorbell Buffer Config command.
• NVME_CTRL_OACS_GLSS — If set, then the controller supports the Get LBA Status capability.
• NVME_CTRL_OACS_CFLS — If set, then the controller supports the command and feature lockdown capability.
• NVME_CTRL_OACS_HMLMS — If set, then the controller supports the Host Managed Live Migration capability.
• NVME_CTRL_OACS_ENSS — If set, then the controller supports the Exported Resource Management capability.
• NVME_CTRL_OACS_CCFLS — If set, then the controller supports the Controller-scoped Command and Feature Lockdown capability. Cleared to '0' if the Command and Feature Lockdown Supported (CFLS) bit is cleared to '0'.

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mwah 💋 this iconic page is serving libnvme(9) API Manual energy, dated October 2026, and the main character is enum nvme_id_ctrl_oacs — periodt. 🫶