hmcdrv_cache_do(9)

💖 NAME 💖

okay so bestie, meet hmcdrv_cache_do(9) from the Kernel API Manual — this icon does a HMC drive CD/DVD transfer with cache update. literally the transfer plus the cache update, all in one main-character move 💅✨

🌸 SYNOPSIS 🌸

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

🦋 ARGUMENTS 🦋

• ftp — pointer to FTP command specification. like the little receipt that says what FTP command we're doing 🧾
• func — FTP transfer function to be used. the function that handles the actual transfer, no cap 🫶

⭐ RETURN ⭐

the number of bytes read/written, or a (negative) error code. so it's giving “here's how many bytes moved” or “here's a (negative) error code,” and honestly 😭 we respect the honesty.

🔥 SEE ALSO 🔥

go be nosy, bestie — these are the friends in the group chat:

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

mwah 💋 this cutie comes from ./drivers/s390/char, dated October 2026 — hmcdrv_cache_do(9) out. 🎀💜