device_create_bin_file(9)

💅 device_create_bin_file(9) — Kernel API Manual, bestie edition

okay so picture this: it's the kernel API manual, the page is literally device_create_bin_file(9), and today we're learning how to drop a binary attribute file into sysfs for a device. that's the whole vibe. let's go 🦋

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✨ NAME ✨

device_create_bin_file — create sysfs binary attribute file for device. yes that's it, that's the whole job, and it does it iconically 💅

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🌸 SYNOPSIS 🌸

int device_create_bin_file (struct device *dev , const struct
       bin_attribute *attr );

like, it returns an int (iykyk, check it), takes a struct device *dev, and a const struct bin_attribute *attr. that's the whole signature, no notes, ate. ✨

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🎀 ARGUMENTS 🎀

• dev — the device. bestie, this is the device, the main character of the operation 🫶
• attr — device binary attribute descriptor. this is the description of the binary attribute you're bringing into the world 🧚

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💜 SEE ALSO 💜

okay so the kernel file this lives in is ./drivers/base/core.c, and here's the full squad of friends it wants you to know about — no skipping, I promised, every single one is here:

• __fwnode_link_add(9)
• __fwnode_link_del(9)
• __fwnode_link_cycle(9)
• fwnode_links_purge_suppliers(9)
• fwnode_links_purge_consumers(9)
• fwnode_links_purge(9)
• __fwnode_links_move_consumers(9)
• __fw_devlink_pickup_dangling_consumers(9)
• fw_devlink_refresh_fwnode(9)
• device_is_dependent(9)
• device_pm_move_to_tail(9)
• device_link_wait_removal(9)
• device_link_add(9)
• device_link_del(9)
• device_link_remove(9)
• device_links_check_suppliers(9)
• __device_links_queue_sync_state(9)
• device_links_flush_sync_list(9)
• device_links_force_bind(9)
• device_links_driver_bound(9)
• __device_links_no_driver(9)
• device_links_no_driver(9)
• device_links_driver_cleanup(9)
• device_links_busy(9)
• device_links_unbind_consumers(9)
• device_links_purge(9)
• wait_for_init_devices_probe(9)
• fwnode_is_ancestor_of(9)
• fwnode_get_next_parent_dev(9)
• __fw_devlink_relax_cycles(9)
• fw_devlink_create_devlink(9)
• __fw_devlink_link_to_consumers(9)
• __fw_devlink_link_to_suppliers(9)
• dev_driver_string(9)
• device_release(9)
• devm_device_add_group(9)
• devices_kset_move_before(9)
• devices_kset_move_after(9)
• devices_kset_move_last(9)
• device_create_file(9)
• device_remove_file(9)
• device_remove_file_self(9)
• device_remove_bin_file(9)
• device_initialize(9)
• kobject_has_children(9)
• dev_set_name(9)
• device_add(9)
• device_register(9)
• get_device(9)
• put_device(9)
• device_del(9)
• device_unregister(9)
• device_get_devnode(9)
• device_for_each_child(9)
• device_for_each_child_reverse(9)
• device_for_each_child_reverse_from(9)
• device_find_child(9)
• device_offline(9)
• device_online(9)
• __root_device_register(9)
• root_device_unregister(9)
• device_create(9)
• device_create_with_groups(9)
• device_destroy(9)
• device_rename(9)
• device_move(9)
• device_change_owner(9)
• device_shutdown(9)
• dev_err_probe(9)
• dev_warn_probe(9)
• set_primary_fwnode(9)
• set_secondary_fwnode(9)
• device_remove_of_node(9)
• device_add_of_node(9)
• device_set_of_node_from_dev(9)
• get_dev_from_fwnode(9)

like, that's a whole friend group and we love every single one of them 💀💖

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lowkey reminder bestie: this page gives you the NAME, the SYNOPSIS, the ARGUMENTS, and the SEE ALSO — nothing extra invented, periodt. 🎀

and that's the page!! this drop is from ./drivers/base, dated October 2026, and it's literally device_create_bin_file(9), signed off with so much love 🌈💜🍓