sas_address_show(9)

💅 sas_address_show(9) — a Kernel API Manual moment

okay bestie, gather round, because today we're looking at a tiny little sysfs function from the SCSI/mpt3sas corner of the kernel and honestly? she's short but she matters 🎀

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✨ NAME ✨

sas_address_show — literally just: the sas address 🦋

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🌸 SYNOPSIS 🌸

ssize_t sas_address_show (struct device *dev , struct device_attribute
*attr , char *buf );

the whole signature, no cap, exactly like that ⬆️ three args, one ssize_t coming back at you 💫

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🎀 ARGUMENTS 🎀

• dev — pointer to the embedded class device. yes queen, embedded — it's tucked inside something bigger, iykyk 💅
• attr — ? … and that's it. that's the whole documentation. the kernel devs really said "idk her" on this one 😭 ? is all we get, so we're not gonna pretend otherwise.
• buf — the buffer returned 🫶 this is where the good stuff lands.

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💖 DESCRIPTION 💖

so what does she actually do? this is the sas address for the target. that's the vibe. that's the whole job. ✨

and lowkey the important detail: it's a sysfs 'read-only' shost attribute. read. only. don't come at her trying to write, she's not that girl 🙈

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🔥 SEE ALSO 🔥

okay this is the part where the extended family shows up — and bestie, the family is HUGE 👑 the kernel file is ./drivers/scsi/mpt3sas/mpt3sas_ctl.c and here's every single relative, no skipping, we don't do that here 💜

• enum 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), _ctl_mpt2_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_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 I said. huge family. main character energy runs in the bloodline 💀💅

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ngl, this whole page is like four lines of actual info and then eighty SEE ALSOs — but that's the mpt3sas ecosystem for you, she's social 🦋

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and that's the tea, bestie 🍓 this lil' drop shipped out of ./drivers/scsi/mpt3sas, dated October 2026 — slay, see you in the next man page 💖✨🧚