proc_dointvec_conv(9)

📦 version 7.3.1, in nixpkgs unstable

💖 proc_dointvec_conv — Kernel API Manual, section 9 💖

okay so bestie, welcome to the section 9 glow-up of proc_dointvec_conv. this is the sysctl helper that reads a whole vector of ints with a custom converter callback, and it's lowkey iconic. let's get into it 🎀

✨ NAME ✨

proc_dointvec_conv — read a vector of ints with a custom converter

🌸 SYNOPSIS 🌸

int proc_dointvec_conv (const struct ctl_table *table , int dir , void *buffer , size_t *lenp , loff_t *ppos , int (*conv)(bool *negp, unsigned long *u_ptr, int *k_ptr, int dir, const struct ctl_table *table) );

🦋 ARGUMENTS 🦋

  • table — the sysctl table. the main character, honestly 👑
  • dir — TRUE if this is a write to the sysctl file. like, are we writing or are we just reading, bestie, pick a lane 💅
  • buffer — the user buffer. that's where the data vibes live
  • lenp — the size of the user buffer. the receipts for how much room we've got
  • ppos — file position. where we're at, iykyk
  • conv — Custom converter call back. Defaults to do_proc_int_conv. this is the plug 🔌 — you can hand it your own converter and it'll slay on your behalf

💜 DESCRIPTION 💜

Reads/writes up to table->maxlen/sizeof(int) integer values from/to the user buffer, treated as an ASCII string.

fr fr that's the whole tea ☕ — that many ints, and the buffer is just an ASCII string on the way in and out. no cap.

⭐ RETURN ⭐

0 on success. periodt. 💀

ngl, there's exactly one return value documented here and it's the happy one — don't go assuming anything else about failure, bestie, because this page doesn't say 👀

🌈 SEE ALSO 🌈

Kernel file ./kernel/sysctl.c, plus the whole friend group:

that's the whole page, bestie 🫶 go forth and convert your ints 💖

and for the credits moment: this one lives under ./kernel, dated October 2026, filed as proc_dointvec_conv(9). stan. ✨🍓

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