binder_get_object(9)

💅 binder_get_object(9) — Kernel API Manual

okay bestie, welcome to binder_get_object, straight out of the Kernel API Manual (section 9, we're fancy here) ✨ it's a tiny lil function that goes "hey, is there a valid object at this offset? lemme grab it" and honestly? iconic behavior 🫶

---

✨ NAME ✨

binder_get_object — gets the object and checks for valid metadata 🌸

---

🎀 SYNOPSIS 🎀

size_t binder_get_object (struct binder_proc *proc , const void __user
*u , struct binder_buffer *buffer , unsigned long offset , struct
binder_object *object );

---

🦋 ARGUMENTS 🦋

five little besties walk into a function, no cap:

• proc — the binder_proc that owns the buffer 👑
• u — the sender's user pointer to the base of the buffer
• buffer — the binder_buffer that we're parsing, periodt
• offset — the offset in the buffer at which to validate an object
• object — the struct binder_object to read into 🎀

---

💖 DESCRIPTION 💖

So here's the tea: it copies the binder object at the given offset into object. That's the whole vibe. 🧚

Where it copies from is the main character moment — if u is provided, then the copy is from the sender's buffer. If it's not provided, then it's copied from the target's buffer. two totally different sources, same slay energy 💅

---

🌈 RETURN 🌈

• if there's a valid metadata object at offset → it returns the size of that object 💚
• otherwise → it returns zero 💀

either way, the object gets read into the struct binder_object pointed to by object, so like, no data is lost bestie 🫶

---

⭐ SEE ALSO ⭐

the whole friend group fr fr — kernel file ./drivers/android/binder.c and literally everyone it knows:

• 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_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)

---

and that's the whole page, bestie 💜 this one came from ./drivers/android, dated October 2026, and yeah — she's still serving binder_get_object(9) energy 🦋✨ hope you understood it fr fr 🫶