fdt_get_symbol_namelen(9)

💖 fdt_get_symbol_namelen(9) — kernel API manual, section 9, bestie ✨

okay so real talk, this one lives in the Kernel API Manual and it's lowkey a remix of fdt_get_symbol — like the same song but the DJ only plays the first namelen seconds of it 🎧 ngl it's iconic in the most specific way possible.

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🌸 NAME 🌸

fdt_get_symbol_namelen — get symbol based on substring 💅

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✨ SYNOPSIS ✨

const char * fdt_get_symbol_namelen (const void *fdt , const char *name
, int namelen );

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🎀 ARGUMENTS 🎀

• fdt — pointer to the device tree blob 🌳 (the whole vibe, the main character)
• name — name of the symbol to look up 🔍
• namelen — number of characters of name to consider 👀 (like, only the first namelen of them, we're not reading the whole essay)

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🦋 DESCRIPTION 🦋

Identical to fdt_get_symbol, but it only examines the first namelen characters of name when matching the symbol name. literally the same function but with a cutoff, no cap 🫶

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⭐ RETURN ⭐

A pointer to the expansion of the symbol named name, if it exists — and NULL otherwise 🙈

so if it's not there, you get NULL, not a vibe, not a guess, not a maybe. NULL.

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🌈 SEE ALSO 🌈

Kernel file ./scripts/dtc/libfdt/libfdt.h — and honestly the whole friend group 🫂:

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(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_overlay_target_offset(9), fdt_strerror(9)

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and that's the whole page, bestie 💜 it ships out of ./scripts/dtc/libfdt, dated October 2026, and it's filed under fdt_get_symbol_namelen(9) — periodt 🎀✨