DEVICE_STRING_ATTR_RO(9)

💅 DEVICE_STRING_ATTR_RO 💅

okay bestie, welcome to the DEVICE_STRING_ATTR_RO(9)</p> page, straight outta the Kernel API Manual ✨ this one's short and sweet and honestly kind of a vibe.

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✨ NAME ✨

DEVICE_STRING_ATTR_RO — bestie. it defines a device attribute backed by a r/o string. that's it. that's the whole thing. 🎀

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🦋 SYNOPSIS 🦋

DEVICE_STRING_ATTR_RO (_name , _mode , _var );

yes the spacing is Like That, we don't judge 💅

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🌸 ARGUMENTS 🌸

• _name — the attribute name, aka what this thing is called 👑
• _mode — the file mode, you know the drill 🎀
• _var — the identifier of the string. it's a string. it's identified. slay 💖

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🔥 DESCRIPTION 🔥

okay so picture DEVICE_ULONG_ATTR, right? iconic. love her. this is literally that but _var is a string instead 🦋

and here's the important part, no cap: because the length of the string allocation is unknown, the attribute must be read-only. like, that's not a suggestion, that's the whole reason the _RO is in the name. the vibe check said nope to writing 😭

bestie please don't try to make it writable. the allocation length is a mystery and we are Not doing that 🙈

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⭐ SEE ALSO ⭐

the whole fam, in the order the page gives them, because i would never do you dirty like that 🫶

• Kernel file ./include/linux/device.h struct subsys_interface(9)
• struct device_attribute(9)
• struct dev_ext_attribute(9)
• DEVICE_ATTR(9)
• DEVICE_ATTR_RW(9)
• DEVICE_ATTR_ADMIN_RW(9)
• DEVICE_ATTR_RW_NAMED(9)
• DEVICE_ATTR_RO(9)
• DEVICE_ATTR_ADMIN_RO(9)
• DEVICE_ATTR_RO_NAMED(9)
• DEVICE_ATTR_WO(9)
• DEVICE_ATTR_WO_NAMED(9)
• DEVICE_ULONG_ATTR(9)
• DEVICE_INT_ATTR(9)
• DEVICE_BOOL_ATTR(9)
• enum device_link_state(9)
• enum dl_dev_state(9)
• enum device_removable(9)
• struct dev_links_info(9)
• struct dev_msi_info(9)
• enum device_physical_location_panel(9)
• enum device_physical_location_vertical_position(9)
• enum device_physical_location_horizontal_position(9)
• struct device_physical_location(9)
• enum struct_device_flags(9)
• struct device(9)
• struct device_link(9)
• device_set_driver_override(9)
• device_has_driver_override(9)
• device_match_driver_override(9)
• device_iommu_mapped(9)
• dev_name(9)
• dev_bus_name(9)
• device_find_child_by_name(9)
• device_find_any_child(9)
• device_lock_set_class(9)
• device_lock_reset_class(9)

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and that's the whole page, bestie, go forth and define your read-only string attributes 💜

sign-off time: this lil masterpiece lives in ./include/linux, it's dated October 2026, and it answers to the name DEVICE_STRING_ATTR_RO(9) 🎀✨ bye bestie 🫶