decode_components(9)

💅 decode_components(9) 💅

okay so welcome to the Kernel API Manual page for decode_components — yes bestie, this is the function that decodes the components now that we know the component data is a version we actually understand. slay.

🌸 NAME 🌸

decode_components — decode the components now that we know the component data is a version we understand.

✨ SYNOPSIS ✨

int decode_components (u8 *buffer , size_t *offset , struct volume_geometry *geometry , struct vdo_component_states *states );

🎀 ARGUMENTS 🎀

• buffer — the buffer being decoded. literally the data situation.
• offset — the offset to start decoding from. that’s where we jump in.
• geometry — the vdo geometry. iconic, essential, no notes.
• states — an object to hold the successfully decoded state. it’s giving “put the decoded stuff here.”

🔥 RETURN 🔥

VDO_SUCCESS or an error. that’s the whole vibe: success or an error, periodt. 💅

🦋 SEE ALSO 🦋

Kernel file: ./drivers/md/dm-vdo/encodings.c — and the whole friend group is:

• validate_version(9)
• vdo_validate_header(9)
• decode_volume_geometry(9)
• vdo_encode_volume_geometry(9)
• vdo_parse_geometry_block(9)
• vdo_compute_new_forest_pages(9)
• encode_recovery_journal_state_7_0(9)
• decode_recovery_journal_state_7_0(9)
• vdo_get_journal_operation_name(9)
• encode_slab_depot_state_2_0(9)
• decode_slab_depot_state_2_0(9)
• vdo_configure_slab_depot(9)
• vdo_configure_slab(9)
• vdo_decode_slab_journal_entry(9)
• allocate_partition(9)
• make_partition(9)
• vdo_initialize_layout(9)
• vdo_uninitialize_layout(9)
• vdo_get_partition(9)
• vdo_get_known_partition(9)
• pack_vdo_config(9)
• pack_vdo_component(9)
• unpack_vdo_config(9)
• unpack_vdo_component_41_0(9)
• decode_vdo_component(9)
• vdo_validate_config(9)
• vdo_destroy_component_states(9)
• vdo_decode_component_states(9)
• vdo_validate_component_states(9)
• vdo_encode_component_states(9)
• vdo_encode_super_block(9)
• vdo_decode_super_block(9)
• vdo_initialize_component_states(9)
• vdo_compute_index_blocks(9)
• vdo_initialize_volume_geometry(9)

xoxo from the ./drivers/md/dm-vdo source/version, dated October 2026, for decode_components(9) 💖🫶