lpfc_debugfs_lseek(9)

💅 lpfc_debugfs_lseek(9) — or, "seek through a debugfs file, bestie"

okay so first things first: this is a page from the Kernel API Manual ✨ (that's the manual name, she's fancy, she's kernel-y) and it's all about lpfc_debugfs_lseek, a little function that does exactly one job and does it slayfully. let's get into it 🎀

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✨ SYNOPSIS ✨

loff_t lpfc_debugfs_lseek (struct file *file , loff_t off , int whence
);

like, that's the whole signature. three args, one loff_t coming back atcha. periodt 💅

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🫶 ARGUMENTS 🫶

• file — the file pointer you're seeking through. yeah. that one. 👀
• off — the offset to seek to, or the amount to seek by. two moods, one parameter, we love a flexible icon.
• whence — tells us how to seek. basically the vibe check for off. 🦋

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🌸 DESCRIPTION 🌸

so this routine is the entry point for the debugfs lseek file operation — like, the front door, the main character energy of seeking. 🚪✨

the whence parameter is the whole key here: it tells you whether off is the offset to directly seek to, or if it's a value to seek forward or reverse by. iykyk. 🌈

this function figures out what the new offset of the debugfs file is gonna be, and then assigns that value to the f_pos field of file. that's it. that's the job. and she does it. 👑

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🔥 RETURN 🔥

• if everything goes off without a hitch, this function returns the new offset 💖
• if it can't process the seek, it returns a negative error 😭

so like, check your return value, bestie. no cap.

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👑 SEE ALSO 👑

the kernel file:

./drivers/scsi/lpfc/lpfc_debugfs.c

and literally the entire extended friend group of related pages — every single one, no skips, we're listing them all 🫶:

• lpfc_debugfs_disc_trc_data(9)
• lpfc_debugfs_slow_ring_trc_data(9)
• lpfc_debugfs_hbqinfo_data(9)
• lpfc_debugfs_commonxripools_data(9)
• lpfc_debugfs_multixripools_data(9)
• lpfc_debugfs_lockstat_data(9)
• lpfc_debugfs_dumpHBASlim_data(9)
• lpfc_debugfs_dumpHostSlim_data(9)
• lpfc_debugfs_nodelist_data(9)
• lpfc_debugfs_nvmestat_data(9)
• lpfc_debugfs_scsistat_data(9)
• lpfc_debugfs_ioktime_data(9)
• lpfc_debugfs_nvmeio_trc_data(9)
• lpfc_debugfs_hdwqstat_data(9)
• lpfc_debugfs_disc_trc(9)
• lpfc_debugfs_slow_ring_trc(9)
• lpfc_debugfs_nvme_trc(9)
• lpfc_debugfs_disc_trc_open(9)
• lpfc_debugfs_slow_ring_trc_open(9)
• lpfc_debugfs_hbqinfo_open(9)
• lpfc_debugfs_multixripools_open(9)
• lpfc_debugfs_lockstat_open(9)
• lpfc_debugfs_ras_log_open(9)
• lpfc_debugfs_dumpHBASlim_open(9)
• lpfc_debugfs_dumpHostSlim_open(9)
• lpfc_debugfs_nodelist_open(9)
• lpfc_debugfs_read(9)
• lpfc_debugfs_release(9)
• lpfc_debugfs_multixripools_write(9)
• lpfc_idiag_cmd_get(9)
• lpfc_idiag_open(9)
• lpfc_idiag_release(9)
• lpfc_idiag_cmd_release(9)
• lpfc_idiag_pcicfg_read(9)
• lpfc_idiag_pcicfg_write(9)
• lpfc_idiag_baracc_read(9)
• lpfc_idiag_baracc_write(9)
• lpfc_idiag_queinfo_read(9)
• lpfc_idiag_que_param_check(9)
• lpfc_idiag_queacc_read_qe(9)
• lpfc_idiag_queacc_read(9)
• lpfc_idiag_queacc_write(9)
• lpfc_idiag_drbacc_read_reg(9)
• lpfc_idiag_drbacc_read(9)
• lpfc_idiag_drbacc_write(9)
• lpfc_idiag_ctlacc_read_reg(9)
• lpfc_idiag_ctlacc_read(9)
• lpfc_idiag_ctlacc_write(9)
• lpfc_idiag_mbxacc_get_setup(9)
• lpfc_idiag_mbxacc_read(9)
• lpfc_idiag_mbxacc_write(9)
• lpfc_idiag_extacc_avail_get(9)
• lpfc_idiag_extacc_alloc_get(9)
• lpfc_idiag_extacc_drivr_get(9)
• lpfc_idiag_extacc_write(9)
• lpfc_idiag_extacc_read(9)
• lpfc_debugfs_initialize(9)
• lpfc_debugfs_terminate(9)
• lpfc_debug_dump_all_queues(9)

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ngl the related-pages list is giving "group project where everyone actually showed up" 😭 iconic behavior honestly 💀

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and that's the tea! 🍓 this page came out of ./drivers/scsi/lpfc, dated October 2026 — so mark your calendars, she's a whole future vibe 🧚💜 go forth and seek responsibly, bestie 💖✨