31 lines
960 B
Markdown
31 lines
960 B
Markdown
# Test Case: Write, Truncate, and Create Rejection
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**Test ID**: TC063-setattr-write-reject
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**Category**: Read-Only Enforcement
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**Priority**: Critical
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## Objective
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Verify direct open-for-write, truncate, and create requests return EROFS and
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leave the mounted tree unchanged.
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## Procedure
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Mount vfs/vfs-plain.erofs and run:
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sha256 /tmp/repo22-g3/mnt/testdir/file.txt > TC063-before.txt
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./g3_vfs_probe expect-error open-rdwr \
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/tmp/repo22-g3/mnt/testdir/file.txt 30
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./g3_vfs_probe expect-error truncate \
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/tmp/repo22-g3/mnt/testdir/file.txt 30
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./g3_vfs_probe expect-error create \
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/tmp/repo22-g3/mnt/testdir/newfile.txt 30
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sha256 /tmp/repo22-g3/mnt/testdir/file.txt > TC063-after.txt
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cmp TC063-before.txt TC063-after.txt
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test ! -e /tmp/repo22-g3/mnt/testdir/newfile.txt
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## Expected Results
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All mutation syscalls report errno 30, the file hash is unchanged, and no new
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entry exists. Record output and cleanup.
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