dso__data_read_addr(9)

📦 version 7.3.1, in nixpkgs unstable

🦋 dso__data_read_addr(9) — the Kernel API Manual tea ☕

okay bestie, welcome to dso__data_read_addr(9) from the Kernel API Manual (section 9, yes, the fancy kernel one) — the little function that reads data from a dso address, and honestly? she's giving "small but mighty." ✨

💖 NAME 💖

dso__data_read_addr — read data from a dso address. that's it, that's the whole vibe. 🎀

🌸 SYNOPSIS 🌸

ssize_t dso__data_read_addr (struct dso *dso , struct map *map , struct
machine *machine , u64 addr , u8 *data , ssize_t size );

six arguments, one ssize_t coming back at you. she's not complicated, she's just specific. 💅

✨ ARGUMENTS ✨

  • dso — the dso object, our main character 👑
  • map — <italic>-- undescribed --</italic> 🫣 (the manpage literally says that, not me, I would never leave you hanging like that... okay maybe I would, but the source didn't describe it so neither will I, fr fr)
  • machine — the machine object, the whole situation she's living in 🖥️
  • addr — <italic>-- undescribed --</italic> 🙈 (again! iconic of the manpage to just not)
  • data — the buffer where the data goes to live its best life 🍓
  • size — the size of the data buffer, so nobody overstays their welcome 💀

🌈 DESCRIPTION 🌈

External interface to read data from dso address. that's the whole description, bestie — short, sweet, and lowkey mysterious. it's the external interface, so this is the doorway everybody else knocks on. 🚪✨

🧚 SEE ALSO 🧚

Kernel file ./tools/perf/util/dso.c (the source of truth, the mothership 🛸) plus her whole friend group:

go read those too, they ate 💅🔥

ngl this page is short but she's part of a whole little dso family — the dso.c file is where all the lore lives. iykyk 🦋

sign-off time 💖 this little gem lives in ./tools/perf/util, dated October 2026, and it's filed under the Kernel API Manual — go off, section 9, and remember: read your dso addresses responsibly. mwah 🫶🎀

📦 where this page comes from