scsicam_bios_param(9)

✨ NAME ✨

okay so bestie, welcome to the scsicam_bios_param(9) page from the Kernel API Manual 💖 the official NAME moment is scsicam_bios_param — Determine geometry of a disk in cylinders/heads/sectors. that's the whole assignment, and it ate. ✨

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🛠️ SYNOPSIS 🛠️

int scsicam_bios_param (struct gendisk *disk , sector_t capacity , int *ip );

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🌸 ARGUMENTS 🌸

• disk — which device, bestie. like, which disk are we even talking about? 👀
• capacity — size of the disk in sectors. yes, sectors, not vibes. 💅
• ip — return value: ip[0]=heads, ip[1]=sectors, ip[2]=cylinders. she's storing the whole geometry glow-up right there. ✨

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🦋 DESCRIPTION 🦋

so what it actually does: determine the BIOS mapping/geometry used for a drive in a SCSI-CAM system, storing the results in ip as required by the HDIO_GETGEO ioctl. that's the assignment, and it understood the brief 🔥 no cap, ip is where the heads/sectors/cylinders info lands.

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🎀 RETURN 🎀

• -1 on failure 😭
• 0 on success 🎉💅

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/scsi/scsicam.c, plus scsi_bios_ptable(9) and scsi_partsize(9) — go read those too, bestie 📚🫶

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mwah 💋 shoutout to source/version ./drivers/scsi and the October 2026 date — periodt. 👑💖