binder_deferred_fd_close(9)

💅 binder_deferred_fd_close(9) — the NAME bit

okay so bestie, welcome to the Kernel API Manual ✨ and today's main character is binder_deferred_fd_close — no cap, it's literally the function that schedules a close for the given file-descriptor 🎀

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✨ SYNOPSIS ✨

void binder_deferred_fd_close (int fd );

that's it. that's the whole vibe check. short, iconic, to the point 💅

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🫶 ARGUMENTS 🫶

• fd — the file-descriptor you want to close. that's the one. the whole assignment 🌸

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🦋 DESCRIPTION 🦋

so like — for the deets, the original is fully just "See comments in binder_do_fd_close", which lowkey means go read the source if you want the full story 📖

what you do need to know though: this function is used to schedule a file-descriptor to be closed after returning from binder_ioctl. not immediately. later. after we come back out of binder_ioctl. that's the entire point of it existing, bestie — it's giving "deferred, not now, we'll get to it" energy ⏳

ngl please don't assume anything extra about how the deferring works — the page is like, extremely clear that the comments in binder_do_fd_close are where the lore lives. go read them 👀

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👑 SEE ALSO 👑

this is the part where the manpage just. keeps. going. 💀 like every single one of the binder homies shows up, plus the Kernel file ./drivers/android/binder.c — here's the full squad, nobody left behind:

• 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)
• 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)

fr fr that's the whole list, ate and left no crumbs 🔥

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and that's the page, bestie 🫶 sourced straight from ./drivers/android, dated October 2026, filed under binder_deferred_fd_close(9) in the Kernel API Manual — mwah, go close some fds (eventually) 💖✨🎀