STRUCT FWCTL_UCTX(9)

🦋 struct fwctl_uctx 🦋

okay so bestie, welcome to the Kernel API Manual, section 9 — this page is literally struct fwctl_uctx(9), and it's giving tiny-but-mighty struct energy. No cap, it's short, but every line matters. Let's get into it 💅

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🌸 NAME 🌸

struct fwctl_uctx — Per user FD context ✨

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🎀 SYNOPSIS 🎀

struct fwctl_uctx {
    struct fwctl_device *fwctl;
 };

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💖 Members 💖

• fwctl — the fwctl instance that owns the context. That's the whole member list, bestie — one pointer, iconic behavior 💅

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🌈 DESCRIPTION 🌈

Every FD opened by userspace will get a unique context allocation. Any driver private data will follow immediately after. Fr fr, that's the whole vibe: one unique context per FD, and any driver private data follows right after it. Obsessed with the efficiency.

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🔥 SEE ALSO 🔥

• Kernel file ./include/linux/fwctl.h
• struct fwctl_ops(9)
• struct fwctl_device(9)
• fwctl_alloc_device(9)

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bestie reminder: this page is short, but don't sleep on it — it's the per-FD context for fwctl, and the struct only has one member. periodt.

mwah 💋 source: ./include/linux · date: October 2026 · this has been the struct fwctl_uctx(9) page, ty for coming to my TED talk 🫶