STRUCT POSIX_CLOCK_CONTEXT(9)

💅 struct posix_clock_context(9) 💅

okay so this is a page from the Kernel API Manual, and bestie, it's a whole vibe — it's literally the struct that holds your clock's file-operation context ✨

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🌸 NAME 🌸

struct posix_clock_context — the thing that represents the context for clock file operations 🕰️✨

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🎀 SYNOPSIS 🎀

struct posix_clock_context {
    struct posix_clock *clk;
    struct file *fp;
    void *private_clkdata;
};

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🦋 Members 🦋

• clk — a pointer to the clock, obvs 💅
• fp — pointer to the file that was used to open the clock, iykyk
• private_clkdata — pointer to user data 🫶

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💜 Description 💜

okay so drivers should use struct posix_clock_context during specific character device file operation methods to get at the posix clock. no cap, that's the whole point of it. in particular, the file pointer can be used to verify the correct access mode for ioctl calls 👑

and like, drivers can also store a private data structure during the open operation if they've got specific info that's required in the other file operations. it's giving "I brought my own snacks to the function call" 🍓

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🌈 SEE ALSO 🌈

• Kernel file ./include/linux/posix-clock.h — struct posix_clock_operations(9)
• struct posix_clock(9)
• posix_clock_register(9)
• posix_clock_unregister(9)

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✨ and that's the whole page, bestie — go read those SEE ALSOs, they're iconic 💖

made with love in ./include/linux • dated October 2026 • and yeah, this is struct posix_clock_context(9) signing off 🎀💫