STRUCT BINDER_PTR_FIXUP(9)

💅 struct binder_ptr_fixup(9) · Kernel API Manual 💅

okay bestie, welcome to the page for struct binder_ptr_fixup — literally “data to be fixed-up in target buffer.” it’s giving tiny kernel data-glow-up, no cap 🫶✨

🌸 NAME 🌸

struct binder_ptr_fixup — data to be fixed-up in target buffer ✨

🦋 SYNOPSIS 🦋

struct binder_ptr_fixup {
    binder_size_t offset;
    size_t skip_size;
    binder_uintptr_t fixup_data;
    struct list_head node;
 };

🎀 Members 🎀

• offset — offset in target buffer to fixup
• skip_size — bytes to skip in copy (fixup will be written later)
• fixup_data — data to write at fixup offset
• node — list node

💖 Description 💖

okay so this struct is used for the pointer fixup list (pf) — the one that gets created and consumed during binder_transaction and is only accessed locally. No locking is necessary, bestie, because it’s local like that. periodt. ✨

The list is ordered by offset. that’s the ordering vibe, iykyk 🎀

🔥 SEE ALSO 🔥

go peek at these, bestie 👀 — kernel file ./drivers/android/binder.c and all these iconic little pages:

• Kernel file ./drivers/android/binder.c
• binder_proc_lock(9)
• binder_proc_unlock(9)
• binder_inner_proc_lock(9)
• binder_inner_proc_unlock(9)
• binder_node_lock(9)
• binder_node_unlock(9)
• binder_node_inner_lock(9)
• binder_node_inner_unlock(9)
• binder_worklist_empty(9)
• binder_enqueue_work_ilocked(9)
• binder_enqueue_deferred_thread_work_ilocked(9)
• binder_enqueue_thread_work_ilocked(9)
• binder_enqueue_thread_work(9)
• binder_dequeue_work(9)
• binder_select_thread_ilocked(9)
• binder_wakeup_thread_ilocked(9)
• binder_inc_node_tmpref(9)
• binder_dec_node_tmpref(9)
• binder_get_ref_for_node_olocked(9)
• binder_inc_ref_olocked(9)
• binder_dec_ref_olocked(9)
• binder_get_node_from_ref(9)
• binder_free_ref(9)
• binder_update_ref_for_handle(9)
• binder_dec_ref_for_handle(9)
• binder_inc_ref_for_node(9)
• binder_thread_dec_tmpref(9)
• binder_proc_dec_tmpref(9)
• binder_get_txn_from(9)
• binder_get_txn_from_and_acq_inner(9)
• binder_free_txn_fixups(9)
• binder_cleanup_transaction(9)
• binder_get_object(9)
• binder_validate_ptr(9)
• binder_validate_fixup(9)
• struct binder_task_work_cb(9)
• binder_do_fd_close(9)
• binder_deferred_fd_close(9)
• struct binder_sg_copy(9)
• binder_do_deferred_txn_copies(9)
• binder_cleanup_deferred_txn_lists(9)
• binder_defer_copy(9)
• binder_add_fixup(9)
• binder_can_update_transaction(9)
• binder_find_outdated_transaction_ilocked(9)
• binder_proc_transaction(9)
• binder_get_node_refs_for_txn(9)
• binder_netlink_report(9)
• binder_free_buf(9)
• binder_apply_fd_fixups(9)
• print_next_binder_node_ilocked(9)

bye bestie 🫶 source/version: ./drivers/android · date: October 2026 ✨💅