_ctl_mpt2_ioctl_compat(9)
π
_ctl_mpt2_ioctl_compat β like, the main ioctl entry point (compat) β¨
okay bestie, pull up a chair, because today's manpage is _ctl_mpt2_ioctl_compat(9) from the Kernel API Manual, and she is short but she is iconic. π
β¨ SYNOPSIS β¨
long _ctl_mpt2_ioctl_compat (struct file *file , unsigned cmd , unsigned
long arg );
that's the whole signature, no notes, she ate π
π¦ ARGUMENTS π¦
okay so this is where it gets funny. the docs literally hand us three arguments and then justβ¦ a question mark. not me being expected to divine the meaning. π
fileβ?β¦ yeah. that's genuinely all the manpage says. a whole question mark. i'm not gonna make something up, that would be lying to you and we don't do that here π«Άcmdβ?β¦ again. iconic of the documentation, honestly.argβ?β¦ three for three. the mystery triplets. the lore is unarchived, bestie. π
no cap, if you need to know what these actually do, you're gonna have to read the source. this page is giving "trust the process" energy and nothing else.
πΈ DESCRIPTION πΈ
so what does she do? one sentence, and it's a banger:
this routine handles 32 bit applications in 64bit os.
that's it. that's the whole description. it's giving "compat layer main character energy" β 32-bit apps knocking on the 64-bit door and this function answers. slay, honestly. π
π SEE ALSO π
okay this is the part where the manpage goes absolutely feral and links, like, the entire friend group. every single one of these, bestie β nothing skipped, nothing merged, i would never:
Kernel file ./drivers/scsi/mpt3sas/mpt3sas_ctl.cenum block_state(9)_ctl_display_some_debug(9)mpt3sas_ctl_done(9)_ctl_check_event_type(9)mpt3sas_ctl_add_to_event_log(9)mpt3sas_ctl_event_callback(9)_ctl_verify_adapter(9)mpt3sas_ctl_pre_reset_handler(9)mpt3sas_ctl_clear_outstanding_ioctls(9)mpt3sas_ctl_reset_done_handler(9)_ctl_fasync(9)_ctl_poll(9)_ctl_set_task_mid(9)_ctl_send_mctp_passthru_req(9)_ctl_do_mpt_command(9)_ctl_getiocinfo(9)_ctl_eventquery(9)_ctl_eventenable(9)_ctl_eventreport(9)_ctl_do_reset(9)_ctl_btdh_search_sas_device(9)_ctl_btdh_search_pcie_device(9)_ctl_btdh_search_raid_device(9)_ctl_btdh_mapping(9)_ctl_diag_capability(9)_ctl_diag_get_bufftype(9)_ctl_diag_register_2(9)mpt3sas_enable_diag_buffer(9)_ctl_diag_register(9)_ctl_diag_unregister(9)_ctl_diag_query(9)mpt3sas_send_diag_release(9)_ctl_diag_release(9)_ctl_diag_read_buffer(9)_ctl_addnl_diag_query(9)_ctl_enable_diag_sbr_reload(9)_ctl_compat_mpt_command(9)_ctl_ioctl_main(9)_ctl_get_mpt_mctp_passthru_adapter(9)mpt3sas_get_device_count(9)_ctl_ioctl(9)_ctl_mpt2_ioctl(9)_ctl_ioctl_compat(9)version_fw_show(9)version_bios_show(9)version_mpi_show(9)version_product_show(9)version_nvdata_persistent_show(9)version_nvdata_default_show(9)board_name_show(9)board_assembly_show(9)board_tracer_show(9)io_delay_show(9)device_delay_show(9)fw_queue_depth_show(9)host_sas_address_show(9)logging_level_show(9)fwfault_debug_show(9)ioc_reset_count_show(9)reply_queue_count_show(9)BRM_status_show(9)host_trace_buffer_size_show(9)host_trace_buffer_show(9)host_trace_buffer_enable_show(9)diag_trigger_master_show(9)diag_trigger_master_store(9)diag_trigger_event_show(9)diag_trigger_event_store(9)diag_trigger_scsi_show(9)diag_trigger_scsi_store(9)diag_trigger_mpi_show(9)diag_trigger_mpi_store(9)drv_support_bitmap_show(9)enable_sdev_max_qd_show(9)enable_sdev_max_qd_store(9)sas_address_show(9)sas_device_handle_show(9)sas_ncq_prio_supported_show(9)sas_ncq_prio_enable_show(9)mpt3sas_ctl_init(9)mpt3sas_ctl_release(9)mpt3sas_ctl_exit(9)
like, eighty-two cross-references. she said "you WILL meet my entire extended family." π§ and honestly? respect.
lowkey a reminder for the real world: if you're ever confused by a manpage that just says?three times, that's your cue to go read the kernel file./drivers/scsi/mpt3sas/mpt3sas_ctl.cβ i'm just the messenger, not the oracle π
π the sign-off π
this absolute gem of a page lives in <pink>./drivers/scsi/mpt3sas</pink>, dated <purple>October 2026</purple>. go forth, handle those 32-bit apps in your 64-bit os, and remember β you're doing amazing, sweetie πβ¨π¦
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms