nvme_set_features_auto_pst(2)

✨ nvme_set_features_auto_pst(2) ✨

okay bestie, welcome to the libnvme API manual 💖 this one's called nvme_set_features_auto_pst and it's about to set your autonomous power state feature and honestly? slay.

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🌸 NAME 🌸

nvme_set_features_auto_pst — Set autonomous power state feature 👑

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🎀 SYNOPSIS 🎀

int nvme_set_features_auto_pst (int fd , bool apste , bool save , struct
nvme_feat_auto_pst *apst , __u32 *result );

like, five things go in, one int comes out, no cap 💅

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🦋 ARGUMENTS 🦋

• fd — the File descriptor of the nvme device. it's literally your golden ticket to the device, don't lose it 🎟️
• apste — Autonomous Power State Transition Enable. this is the on/off switch for the whole auto-transition vibe ✨
• save — Save value across power states. set it and the setting sticks around even after a power state change. main character energy fr 🫶
• apst — Autonomous Power State Transition, a struct nvme_feat_auto_pst *. the actual table of transition deets, pointing at it like 👉🧚
• result — The command completion result from CQE dword0</so>. yeah it hands you back a __u32 * of what the completion queue entry's dword0 said, ikyk 😭

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🌈 RETURN 🌈

so what do you get back? it returns the nvme command status if a response was received (go peek at enum nvme_status_field for the full tea ☕), or -1 with errno set otherwise 💀

bestie. if you get the -1, that's not a slay, that's an error — go check errno, it knows what happened 🙈

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and that's the whole page, periodt 💜 this lil' gem lives in the libnvme API manual, dated July 2026 — thank you for coming to my ted talk, mwah 🎀💖✨