ufs/ffs: detect endian mismatch between machine and filesystem
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Authored by alfredo on Dec 17 2022, 3:00 AM.

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imp

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Reviewers: None

Summary

Mount on a LE machine a filesystem formatted for BE is not supported
currently. This adds a check for the superblock magic number using
swapped bytes to guess and warn the user that it may be a valid
superblock but endian is incompatible.

MFC after: 2 weeks

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Repository

rG FreeBSD src repository

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No Test Coverage

Build Status

Buildable 48737
Build 45623: arc lint + arc unit

Event Timeline

alfredo created this revision.Dec 17 2022, 3:00 AM

Herald added a subscriber: imp. · View Herald TranscriptDec 17 2022, 3:00 AM

alfredo requested review of this revision.Dec 17 2022, 3:00 AM

Harbormaster completed remote builds in B48737: Diff 114214.Dec 17 2022, 3:00 AM

alfredo abandoned this revision.Dec 17 2022, 3:01 AM

Revision Contents
Changeset List

Path

Size

sys/

kern/

vfs_mountroot.c

2 lines

ufs/

ffs/

ffs_subr.c

27 lines

Diff 114214

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sys/kern/vfs_mountroot.c