PFRU_IOC_STAGE(9)

💅 PFRU_IOC_STAGE(9) 💅

okay so bestie, welcome to the Kernel API Manual — this is the PFRU_IOC_STAGE(9) page and it's lowkey iconic. let's get into it 🫶

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✨ NAME ✨

PFRU_IOC_STAGE — literally defined as _IOW(PFRUT_IOCTL_MAGIC, 0x02, unsigned int). that's the whole name, no cap 💅

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🌸 SYNOPSIS 🌸

PFRU_IOC_STAGE

that's it. that's the synopsis. short and slay ✨

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🎀 RETURN 🎀

• 0 — success, we ate 👑
• -EINVAL — the stage phase returned an invalid result 😭 that's the error vibe

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🦋 DESCRIPTION 🦋

so what does it do? it stages a capsule image from the communication buffer, and then it performs authentication. yes queen, both things 💖

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🌈 SEE ALSO 🌈

the kernel file is at ./include/uapi/linux/pfrut.h — go read it, iykyk 👀

and then the whole friend group:

• PFRU_IOC_SET_REV(9)
• PFRU_IOC_ACTIVATE(9)
• PFRU_IOC_STAGE_ACTIVATE(9)
• PFRU_IOC_QUERY_CAP(9)
• struct pfru_payload_hdr(9)
• struct pfru_update_cap_info(9)
• struct pfru_com_buf_info(9)
• struct pfru_updated_result(9)
• struct pfrt_log_data_info(9)
• struct pfrt_log_info(9)
• PFRT_LOG_IOC_SET_INFO(9)
• PFRT_LOG_IOC_GET_INFO(9)
• PFRT_LOG_IOC_GET_DATA_INFO(9)

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and that's the page bestie!! 🌟 this one lives in ./include/uapi/linux, dated October 2026 — mwah, periodt 💋🎀💜