fdt_setprop...lder_namelen(9)

hey bestie 💖 this is the fdt_setprop...lder_namelen(9) page, straight outta the Kernel API Manual.

✨ NAME ✨

• fdt_setprop_placeholder_namelen — allocate space for a property 🎀

🌸 SYNOPSIS 🌸

int fdt_setprop_placeholder_namelen (void *fdt , int nodeoffset , const
       char *name , int namelen , int len , void **prop_data );

💅 ARGUMENTS 💅

• fdt — pointer to the device tree blob. 🌳
• nodeoffset — offset of the node whose property to change.
• name — name of the property to change.
• namelen — length of the name.
• len — length of the property value.
• prop_data — return pointer to property data.

🦋 DESCRIPTION 🦋

fdt_setprop_placeholder_namelen allocates the named property in the given node. If the property exists, it is resized. Either way, a pointer to the property data is returned.

⚠️ okay but for real, bestie: this function may insert or delete data from the blob, and will therefore change the offsets of some existing nodes. That's not a vibe, it's a warning. 😭

🔥 RETURN 🔥

Here's the tea on what comes back:

• 0 — success, slay ✨
• -FDT_ERR_NOSPACE — there is insufficient free space in the blob to contain the new property value.
• -FDT_ERR_BADOFFSET — nodeoffset did not point to FDT_BEGIN_NODE tag.
• -FDT_ERR_BADLAYOUT
• -FDT_ERR_BADMAGIC
• -FDT_ERR_BADVERSION
• -FDT_ERR_BADSTATE
• -FDT_ERR_BADSTRUCTURE
• -FDT_ERR_BADLAYOUT
• -FDT_ERR_TRUNCATED
• standard meanings

🌈 SEE ALSO 🌈

The kernel file ./scripts/dtc/libfdt/libfdt.h is home base, and the whole squad is: 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(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_overlay_target_offset(9), fdt_strerror(9).

and that's the whole page, bestie 🫶 — source: ./scripts/dtc/libfdt · date: October 2026 · page: fdt_setprop...lder_namelen(9) — mwah 💋