binder_do_d...d_txn_copies(9)

📦 version 7.3.1, in nixpkgs unstable

🎀 NAME

okay so bestie, this page is binder_do_d...d_txn_copies(9) from the Kernel API Manual ✨ and the actual function is binder_do_deferred_txn_copies — it’s the one that does copy and fixup scatter-gather data 💅

✨ SYNOPSIS

int binder_do_deferred_txn_copies (struct binder_alloc *alloc , struct
       binder_buffer *buffer , struct list_head *sgc_head , struct list_head
       *pf_head );

🫶 ARGUMENTS

  • alloc — the binder_alloc that’s associated with buffer 🧚
  • buffer — the binder buffer in the target process 🎀
  • sgc_head — list_head of the scatter-gather copy list ✨
  • pf_head — list_head of the pointer fixup list 💖

🌸 DESCRIPTION

So what it does is: it processes all the elements of sgc_head, applies the fixups from pf_head, and copies the scatter-gather data from the source process’ user buffer over to the target’s buffer 🦋

It is expected that the list creation and processing all occurs during binder_transaction, so these lists are only accessed in local context — that’s the vibe check, and it passes 😌✨

💖 RETURN

  • 0=success, else -errno — so 0 is the success slay, and otherwise you get the -errno situation 😭💀

🔥 SEE ALSO

okay bestie, the SEE ALSO section is lowkey a whole group chat 💅 they all hang out in the kernel file ./drivers/android/binder.c, and every single one is here, no skips:

source/version: ./drivers/android · date: October 2026 · page: binder_do_d...d_txn_copies(9) 🫶💖

📦 where this page comes from