hmcdrv_cache_cmd(9)

💖 NAME 💖

hmcdrv_cache_cmd — perform a cached HMC drive CD/DVD transfer

Okay bestie, this is the hmcdrv_cache_cmd(9) page from the Kernel API Manual ✨ and it's lowkey all about doing that cached HMC drive CD/DVD transfer. Slay.

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✨ SYNOPSIS ✨

       ssize_t hmcdrv_cache_cmd (const struct hmcdrv_ftp_cmdspec *ftp ,
       hmcdrv_cache_ftpfunc func );

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🎀 ARGUMENTS 🎀

• ftp — pointer to FTP command specification. Yes, it's giving "here's the FTP command spec" energy.
• func — FTP transfer function to be used. That's the function doing the transfer, bestie.

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🦋 DESCRIPTION 🦋

⚠️ Attention bestie: notice that this function is not reentrant — so the caller must ensure exclusive execution. No cap, that part is serious.

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🌸 RETURN 🌸

It returns the number of bytes read/written, or a (negative) error code. Periodt. 💅

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/s390/char/hmcdrv_cache.c
• struct hmcdrv_cache_entry(9)
• hmcdrv_cache_get(9)
• hmcdrv_cache_do(9)
• hmcdrv_cache_startup(9)
• hmcdrv_cache_shutdown(9)

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Signed off from the source/version ./drivers/s390/char, dated October 2026 — bye bestie, stay iconic! 💖✨