isofs: Fix handling of directories with tight blocks

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Thomas has reported that after commit b2eb2e2886 ("isofs: Drop support
of directory entries straddling blocks") some isofs images of Fedora
miss some entries in some directories. The problem is triggered when
directory entries are packed in a block in such a way that they exactly
fit the block (which BTW mkisofs doesn't do so I didn't catch this bug
when testing with my images). Fix readdir and lookup code to properly
transition to the next block when directory block is tightly packed.

Link: https://bugzilla.redhat.com/show_bug.cgi?id=2535353
Reported-by: Thomas Schmitt <scdbackup@gmx.net>
Reported-by: Matthias Goergens <matthias.goergens@gmail.com>
Fixes: b2eb2e2886 ("isofs: Drop support of directory entries straddling blocks")
Reviewed-by: Thomas Schmitt <scdbackup@gmx.net>
Signed-off-by: Jan Kara <jack@suse.cz>

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This commit is contained in:

Jan Kara 2026-09-22 12:41:02 +02:00

parent 704340f1cd

commit 883b776abe

2 changed files with 17 additions and 19 deletions

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20

fs/isofs/dir.c

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16

fs/isofs/namei.c

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