xz_dec_microlzma_reset(9)

💅 xz_dec_microlzma_reset — a Kernel API Manual moment 🎀

okay so bestie, welcome to the Kernel API Manual, and today's main character is xz_dec_microlzma_reset ✨ — the little function that hits the reset button on your MicroLZMA decoder state so it's fresh and ready to slay again 💖

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✨ NAME ✨

xz_dec_microlzma_reset — reset the MicroLZMA decoder state 🔄 no cap, that's literally the whole vibe.

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🌸 SYNOPSIS 🌸

void xz_dec_microlzma_reset (struct xz_dec_microlzma *s , uint32_t
comp_size , uint32_t uncomp_size , int uncomp_size_is_exact );

she takes four things and returns absolutely nothing (void era, we love a function that gives nothing back but still serves 💅). the exact signature, character for character:

void xz_dec_microlzma_reset(struct xz_dec_microlzma *s,
                            uint32_t comp_size,
                            uint32_t uncomp_size,
                            int uncomp_size_is_exact);

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🦋 ARGUMENTS 🦋

• s — the decoder state, bestie. and not just any decoder state: one that was allocated using xz_dec_microlzma_alloc. don't be out here passing random garbage, that's not the vibe 🙈
• comp_size — the compressed size of the input stream 🗜️ i.e. how big the squeeze is. uint32_t, obviously.
• uncomp_size — the uncompressed size of the input stream 🌈 now listen closely because this one has lore:
  • you can pass a value smaller than the real uncompressed size of the input stream, but only if uncomp_size_is_exact is set to false. lowkey a loophole, highkey documented.
  • but you can never set uncomp_size to a value larger than the expected real uncompressed size 😭 because that would eventually result in XZ_DATA_ERROR. not a cute error. a XZ_DATA_ERROR error. avoid 💀
• uncomp_size_is_exact — ok so this one is an int instead of a bool purely to avoid requiring stdbool.h 🫶 iconic C decision-making, honestly. it should normally be set to true ⭐. and when you set it to false, error detection is weaker. weaker!! so like… tread carefully, bestie 🎀

fr fr: true = tight error detection. false = the vibes are loose and so is the validation. choose wisely 💜

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👑 SEE ALSO 👑

go read these next, they're all in the ./include/linux/xz.h kernel file and they're all part of the same friend group 🧚:

• enum xz_mode(9)
• enum xz_ret(9)
• struct xz_buf(9)
• xz_dec_init(9)
• xz_dec_run(9)
• xz_dec_reset(9)
• xz_dec_end(9)
• MicroLZMA decompressor(9)
• xz_dec_microlzma_alloc(9)
• xz_dec_microlzma_run(9)
• xz_dec_microlzma_end(9)

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🌟 sign-off 🌟

that's the whole page, bestie 💖 this little gem lives over in ./include/linux, it's dated October 2026, and it goes by xz_dec_microlzma_reset(9). go reset something. periodt 🔥👑