Improve partition name extraction logic#381
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probonopd
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This allows us to recognize USB sticks that have an ISO9660 image directly written on it (e.g., GhostBSD). Upstream PR: gnustep#381
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Pull request overview
This PR improves the partition name extraction logic in NSWorkspace to properly handle modern Linux block device naming schemes. The previous implementation naively truncated device names to 3 characters, which failed for devices like NVMe drives (nvme0n1p1), MMC/SD cards (mmcblk0p1), and ISO9660 images on USB sticks.
Changes:
- Updated copyright year to 2026
- Replaced crude 3-character truncation with comprehensive device-type-aware partition stripping logic
- Added support for nvme, mmcblk, sd, hd, vd, and xvd device naming patterns with proper partition suffix removal
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| else if ([devName hasPrefix:@"sd"] || [devName hasPrefix:@"hd"] || | ||
| [devName hasPrefix:@"vd"] || [devName hasPrefix:@"xvd"]) | ||
| { | ||
| /* For sd/hd/vd devices, remove trailing digits (sda1 → sda) */ |
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The comment mentions only "sd/hd/vd devices" but the code also handles "xvd" devices (Xen virtual disks). The comment should include "xvd" for completeness.
| /* For sd/hd/vd devices, remove trailing digits (sda1 → sda) */ | |
| /* For sd/hd/vd/xvd devices, remove trailing digits (sda1 → sda) */ |
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| /* Extract block device name by removing partition suffix | ||
| * Handle various device naming schemes: | ||
| * sd*, hd* → just remove trailing digits (sda1 → sda) |
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The comment states that only sd* and hd* devices have trailing digits removed, but the code also handles vd* and xvd* devices (virtual disk devices). The comment should be updated to reflect all device types handled: "sd*, hd*, vd*, xvd* → remove trailing digits".
fredkiefer
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fredkiefer
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Looks good to me.
The Copilot comments are really very helpful, your should address these. Having a test would be nice, but not strictly required.
I would prefer to have this new code in a helper function/method, but again this is not required. I also prefer to have a space after the colon in a method call, but the code around this change is also lacking that.
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It would be great to finish this PR. There are only minor things missing. |
Extract partition name stripping into a helper method _stripPartitionSuffixFromDeviceName: supporting modern Linux block device naming schemes (nvme, mmcblk, sd, hd, vd, xvd). Previously only sd/hd were handled with crude 3-char truncation. Without this fix, ISO9660 images directly written to USB sticks are not recognized properly.
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Thanks for merging @fredkiefer |
Without this fix, a ISO9660 image directly written to a USB stick (e.g., GhostBSD, Linux Live system) is not recognized properly. With this fix, it is.
Original comment said
// This is a very crude way of removing the partition number.