fdt_overlay_target_offset(9)

🦋 fdt_overlay_target_offset(9) — Kernel API Manual 🦋

okay bestie, welcome to the fdt_overlay_target_offset(9) page — manual name, check; kernel API energy, check. We're here to talk about grabbing a fragment's target offset, no cap. 👑

✨ NAME ✨

fdt_overlay_target_offset — retrieves the offset of a fragment's target. literally the whole assignment. 💅

💅 SYNOPSIS 💅

int fdt_overlay_target_offset (const void *fdt , const void *fdto , int
       fragment_offset , char const **pathp );

🎀 ARGUMENTS 🎀

• fdt — Base device tree blob. the main tree, the base one, the one we're targeting. 🌳
• fdto — Device tree overlay blob. the overlay bestie doing the targeting. 🦋
• fragment_offset — node offset of the fragment in the overlay. yes, that exact fragment. 📍
• pathp — pointer which receives the path of the target (or NULL). it gets the path — or it's NULL, your call. 🫶

🔥 DESCRIPTION 🔥

fdt_overlay_target_offset retrieves the target offset in the base device tree of a fragment, no matter how the actual targeting is done (through a phandle or a path). so like, whether the overlay is pointing at stuff via phandle or via a path, this function still gets you that target offset. iconic behavior, honestly. ✨

🌸 RETURN 🌸

• the targeted node offset in the base device tree ⭐
• Negative error code on error 💀

🧚 SEE ALSO 🧚

Kernel file ./scripts/dtc/libfdt/libfdt.h — and the whole guest list:

• fdt_offset_ptr(9)
• fdt_next_tag(9)
• fdt_first_subnode(9)
• fdt_next_subnode(9)
• fdt_for_each_subnode(9)
• fdt_header_size(9)
• fdt_header_size_(9)
• fdt_check_header(9)
• fdt_move(9)
• fdt_check_full(9)
• fdt_get_string(9)
• fdt_string(9)
• fdt_find_max_phandle(9)
• fdt_get_max_phandle(9)
• fdt_generate_phandle(9)
• fdt_num_mem_rsv(9)
• fdt_get_mem_rsv(9)
• fdt_subnode_offset_namelen(9)
• fdt_subnode_offset(9)
• fdt_path_offset_namelen(9)
• fdt_path_offset(9)
• fdt_get_name(9)
• fdt_first_property_offset(9)
• fdt_next_property_offset(9)
• fdt_for_each_property_offset(9)
• fdt_get_property_by_offset(9)
• fdt_get_property_namelen(9)
• fdt_get_property(9)
• fdt_getprop_by_offset(9)
• fdt_getprop_namelen(9)
• fdt_getprop(9)
• fdt_get_phandle(9)
• fdt_get_alias_namelen(9)
• fdt_get_alias(9)
• fdt_get_symbol_namelen(9)
• fdt_get_symbol(9)
• fdt_get_path(9)
• fdt_supernode_atdepth_offset(9)
• fdt_node_depth(9)
• fdt_parent_offset(9)
• fdt_node_offset_by_prop_value(9)
• fdt_node_offset_by_phandle(9)
• fdt_node_check_compatible(9)
• fdt_node_offset_by_compatible(9)
• fdt_stringlist_contains(9)
• fdt_stringlist_count(9)
• fdt_stringlist_search(9)
• fdt_stringlist_get(9)
• FDT_MAX_NCELLS(9)
• fdt_address_cells(9)
• fdt_size_cells(9)
• fdt_setprop_inplace_namelen_partial(9)
• fdt_setprop_inplace(9)
• fdt_setprop_inplace_u32(9)
• fdt_setprop_inplace_u64(9)
• fdt_setprop_inplace_cell(9)
• fdt_nop_property(9)
• fdt_nop_node(9)
• fdt_create_with_flags(9)
• fdt_create(9)
• fdt_resize(9)
• fdt_add_reservemap_entry(9)
• fdt_finish_reservemap(9)
• fdt_begin_node(9)
• fdt_property(9)
• fdt_property_placeholder(9)
• fdt_end_node(9)
• fdt_finish(9)
• fdt_create_empty_tree(9)
• fdt_open_into(9)
• fdt_pack(9)
• fdt_add_mem_rsv(9)
• fdt_del_mem_rsv(9)
• fdt_set_name(9)
• fdt_setprop_namelen(9)
• fdt_setprop(9)
• fdt_setprop_placeholder_namelen(9)
• fdt_setprop_placeholder(9)
• fdt_setprop_u32(9)
• fdt_setprop_u64(9)
• fdt_setprop_cell(9)
• fdt_setprop_string(9)
• fdt_setprop_namelen_string(9)
• fdt_setprop_empty(9)
• fdt_appendprop(9)
• fdt_appendprop_u32(9)
• fdt_appendprop_u64(9)
• fdt_appendprop_cell(9)
• fdt_appendprop_string(9)
• fdt_appendprop_addrrange(9)
• fdt_delprop(9)
• fdt_add_subnode_namelen(9)
• fdt_add_subnode(9)
• fdt_del_node(9)
• fdt_overlay_apply(9)
• fdt_strerror(9)

xoxo bestie 💖 source/version: ./scripts/dtc/libfdt, dated October 2026, manual: fdt_overlay_target_offset(9). periodt. 👑