xfs: push corruption -> ESTALE conversion to xfs_nfs_get_inode()

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In xfs_imap_to_bp(), we convert a -EFSCORRUPTED error to -EINVAL if
we are doing an untrusted lookup. This is done because we need
failed filehandle lookups to report -ESTALE to the caller, and it
does this by converting -EINVAL and -ENOENT errors to -ESTALE.

The squashing of EFSCORRUPTED in imap_to_bp makes it impossible for
for xfs_iget(UNTRUSTED) callers to determine the difference between
"inode does not exist" and "corruption detected during lookup". We
realy need that distinction in places calling xfS_iget(UNTRUSTED),
so move the filehandle error case handling all the way out to
xfs_nfs_get_inode() where it is needed.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

...

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Dave Chinner 2018-06-05 10:09:34 -07:00 • committed by Darrick J. Wong

parent 541b5acc85

commit 29cad0b3ed

2 changed files with 12 additions and 8 deletions

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5

fs/xfs/libxfs/xfs_inode_buf.c

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15

fs/xfs/xfs_export.c

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