binder_get_...nd_acq_inner(9)

🌸 binder_get_txn_from_and_acq_inner(9) 🌸

okay bestie, welcome to the Kernel API Manual entry for binder_get_txn_from_and_acq_inner — the function that gets t->from and acquires the inner lock, and yes we are keeping every single detail. 💅✨

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💖 NAME 💖

binder_get_txn_from_and_acq_inner — get t->from and acquire the inner lock. That's the name, that's the vibe, no cap. 🎀

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🦋 SYNOPSIS 🦋

here's the signature, character for character:

struct binder_thread * binder_get_txn_from_and_acq_inner (struct
       binder_transaction *t );

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🎀 ARGUMENTS 🎀

• t — the binder transaction for t->from. That's the arg, bestie: it's the transaction we're pulling from. 🫶

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✨ DESCRIPTION ✨

okay so this is literally the same as binder_get_txn_from, except it also acquires proc->inner_lock. Why? To guarantee that the thread cannot be released while operating on it. 🔥

real talk: the caller must call binder_inner_proc_unlock to release the inner lock, and must also call binder_dec_thread_txn to release the reference. Both. Not optional. Don't leave the lock or the ref hanging, bestie. 💅

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🌈 RETURN 🌈

the value of t->from — that's what comes back. periodt. 👑

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👑 SEE ALSO 👑

the kernel file is ./drivers/android/binder.c, and here's the full cross-ref squad, every single one:

• 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_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)

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cute sign-off: from ./drivers/android, October 2026, on the binder_get_...nd_acq_inner(9) page — mwah, bestie 💖🦋