scsi_execute_cmd(9)

💫 scsi_execute_cmd(9) 💫

okay so bestie, welcome to the Kernel API Manual — this one's a kernel-API girly and honestly she's kind of a big deal. Let's get into it ✨

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🌸 NAME 🌸

scsi_execute_cmd — insert request and wait for the result

like, you yeet the request in and then you wait. main character behavior fr 💅

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🦋 SYNOPSIS 🦋

int scsi_execute_cmd (struct scsi_device *sdev , const unsigned char
*cmd , blk_opf_t opf , void *buffer , unsigned int bufflen , int timeout
, int ml_retries , const struct scsi_exec_args *args );

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🎀 ARGUMENTS 🎀

• sdev — the scsi_device. the whole reason we're here 🫶
• cmd — the scsi command. iconic, necessary
• opf — block layer request cmd_flags. flags girlies rise
• buffer — data buffer. hold the data bestie
• bufflen — len of buffer. yes, that's the length. of the buffer. 😭
• timeout — request timeout in HZ. don't let it wait forever ngl
• ml_retries — number of times SCSI midlayer will retry request. she's persistent ✨
• args — Optional args. See struct definition for field descriptions. optional but lowkey important 👀

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💖 DESCRIPTION 💖

Returns the scsi_cmnd result field if a command was executed, or a negative Linux error code if we didn't get that far.

so like — if it actually ran, you get the scsi_cmnd result field. if we never even got that far, you get a negative Linux error code instead. vibe check failed, basically 💀

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⭐ SEE ALSO ⭐

Kernel file ./drivers/scsi/scsi_lib.c — and here's the whole friend group, no cap:

• __scsi_queue_insert(9)
• scsi_queue_insert(9)
• scsi_failures_reset_retries(9)
• scsi_check_passthrough(9)
• scsi_run_queue(9)
• scsi_result_to_blk_status(9)
• scsi_rq_err_bytes(9)
• scsi_io_completion(9)
• scsi_alloc_sgtables(9)
• scsi_initialize_rq(9)
• scsi_alloc_request(9)
• scsi_dispatch_cmd(9)
• scsi_get_internal_cmd(9)
• scsi_put_internal_cmd(9)
• scsi_device_from_queue(9)
• scsi_block_requests(9)
• scsi_unblock_requests(9)
• scsi_mode_select(9)
• scsi_mode_sense(9)
• scsi_test_unit_ready(9)
• scsi_device_set_state(9)
• scsi_evt_emit(9)
• scsi_evt_thread(9)
• sdev_evt_send(9)
• sdev_evt_alloc(9)
• sdev_evt_send_simple(9)
• scsi_device_quiesce(9)
• scsi_device_resume(9)
• scsi_internal_device_block_nowait(9)
• scsi_device_block(9)
• scsi_internal_device_unblock_nowait(9)
• scsi_internal_device_unblock(9)
• scsi_block_targets(9)
• scsi_host_block(9)
• scsi_kmap_atomic_sg(9)
• scsi_kunmap_atomic_sg(9)
• scsi_vpd_lun_id(9)
• scsi_vpd_lun_serial(9)
• scsi_vpd_tpg_id(9)
• scsi_build_sense(9)

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ok that's the whole page bestie, go forth and execute commands responsibly 🧚‍♀️

mwah 💋 this page lives in ./drivers/scsi and it's stamped October 2026 — scsi_execute_cmd(9) out. periodt 🎀✨