binder_alloc_new_buf(9)

💅 binder_alloc_new_buf(9) — Kernel API Manual edition ✨

okay bestie, this is the Kernel API Manual page for binder_alloc_new_buf(9), and we are literally here to allocate a new binder buffer. main character energy only. 🫶

💖 NAME 💖

binder_alloc_new_buf — Allocate a new binder buffer.

✨ SYNOPSIS ✨

struct binder_buffer * binder_alloc_new_buf (struct binder_alloc *alloc
       , size_t data_size , size_t offsets_size , size_t extra_buffers_size ,
       int is_async );

🎀 ARGUMENTS 🎀

• alloc — the binder_alloc for this proc, iykyk.
• data_size — size of user data buffer.
• offsets_size — user specified buffer offset.
• extra_buffers_size — size of extra space for meta-data (eg, security context).
• is_async — buffer for async transaction.

🌸 DESCRIPTION 🌸

so basically you give it the requested sizes, and it allocates a new buffer. it returns the kernel version of the buffer pointer. The size allocated is the sum of the three given sizes (each rounded up to pointer-sized boundary). not me doing math in public, but that's the vibe. 💅

💀 RETURN 💀

The allocated buffer, or ERR_PTR(-errno) if error. that's the slay-or-nay outcome, fr fr. 😭

🦋 SEE ALSO 🦋

• Kernel file ./drivers/android/binder_alloc.c
• binder_alloc_prepare_to_free(9)
• binder_alloc_get_page(9)
• binder_alloc_clear_buf(9)
• binder_alloc_free_buf(9)
• binder_alloc_mmap_handler(9)
• binder_alloc_print_allocated(9)
• binder_alloc_print_pages(9)
• binder_alloc_get_allocated_count(9)
• binder_alloc_vma_close(9)
• binder_alloc_free_page(9)
• binder_alloc_init(9)
• check_buffer(9)
• binder_alloc_copy_user_to_buffer(9)

this page was brought to you by source/version ./drivers/android, dated October 2026, and page binder_alloc_new_buf(9) — mwah, bye bestie! 💖🦋