libie_debugfs_data_write(9)

💅 libie_debugfs_data_write(9) 💅

okay bestie, so this is a page straight out of the Kernel API Manual (section 9, iykyk) and it's all about one tiny little function that writes stuff into the data file. yes, that data file. the debugfs one. we love a lowkey legend 🫶

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✨ NAME ✨

libie_debugfs_data_write — writes into the data file. that's it. that's the whole vibe 💖

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🌸 SYNOPSIS 🌸

ssize_t libie_debugfs_data_write (struct file *filp , const char __user
*buf , size_t count , loff_t *ppos );

look at her. returning ssize_t, taking four lil args. main character energy fr fr 👑

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🎀 ARGUMENTS 🎀

• filp — the opened file. like, the actual file object you're working with, bestie 🗂️
• buf — this is where the user's data is hiding. go find it 🔍
• count — the length of the user's data. how many bytes we're dealing with, no cap 📏
• ppos — the file position offset. the "where are we rn" of it all 📍

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🦋 SEE ALSO 🦋

the kernel file lives at ./drivers/net/ethernet/intel/libie/fwlog.c — go read it, it's giving source of truth ✨

and here's the whole friend group, all iconic, all linked:

• libie_fwlog_realloc_rings(9)
• libie_fwlog_supported(9)
• libie_aq_fwlog_set(9)
• libie_fwlog_set(9)
• libie_aq_fwlog_register(9)
• libie_fwlog_register(9)
• libie_fwlog_unregister(9)
• libie_fwlog_print_module_cfg(9)
• libie_debugfs_module_show(9)
• libie_debugfs_module_write(9)
• libie_debugfs_nr_messages_read(9)
• libie_debugfs_nr_messages_write(9)
• libie_debugfs_enable_read(9)
• libie_debugfs_enable_write(9)
• libie_debugfs_log_size_read(9)
• libie_debugfs_log_size_write(9)
• libie_debugfs_data_read(9)
• libie_debugfs_fwlog_init(9)
• libie_aq_fwlog_get(9)
• libie_fwlog_set_supported(9)
• libie_fwlog_init(9)
• libie_fwlog_deinit(9)
• libie_get_fwlog_data(9)

like, that's the whole group chat right there 💀💖

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ngl bestie, that source path in the footer got cut off as ./drivers/net/ethernet/intel/l... — that's literally what it says, so don't come for me 🙈

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and that's a wrap, babe 🎬 this page came from ./drivers/net/ethernet/intel/l..., dated October 2026, and it's filed under libie_debugfs_data_write(9). periodt. 💅✨🌸