binder_get_txn_from(9)

hey bestie, welcome to binder_get_txn_from(9) from the Kernel API Manual — it's a tiny function with big main-character energy ✨

✨ NAME ✨

binder_get_txn_from — safely extract the "from" thread in transaction. That's the whole name, no cap 💅

🦋 SYNOPSIS 🦋

the signature is literally:

struct binder_thread * binder_get_txn_from (struct binder_transaction *t
);

🎀 ARGUMENTS 🎀

• t — binder transaction for t->from (yes, that's the one and only argument, bestie 🫶)

💅 DESCRIPTION 💅

okay so this function atomically returns the "from" thread and increments the tmp_ref count for the thread. The whole point of that ref bump is to ensure it stays alive until binder_thread_dec_tmpref is called. That's it. That's the vibe. It's giving “keep the thread alive, don't let it ghost” energy 😭🔥

🔥 RETURN 🔥

the value of t->from — that's the return, periodt 💅

👑 SEE ALSO 👑

Kernel file ./drivers/android/binder.c is the main character; the rest of the friend group is:

• 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_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_ptr_fixup(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)

okay bye bestie 💋 source/version is ./drivers/android, date is October 2026, and this page is binder_get_txn_from(9) — love u, stay iconic 🌈👑