ntfs3: fix boundary check in ntfs_dir_count()

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ntfs_dir_emit() skips index entries whose fname does not fit in e->size,
but ntfs_dir_count() still accepted them via de_get_fname() alone.
dir_is_empty() can then disagree with readdir: a malformed directory
appears empty in ls while rmdir fails with ENOTEMPTY.

Factor the fname/key bounds check into de_fname_fits() and use it from
ntfs_dir_emit() and de_countable_fname() so count/readdir share the same
entry acceptance rules.

Signed-off-by: Xixin Liu <liuxixin@kylinos.cn>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

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Konstantin Komarov 2026-07-02 13:03:30 +02:00

parent 2064bc663f

commit 71a25f2593

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1 changed files with 25 additions and 7 deletions

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fs/ntfs3/dir.c

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