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FreeBSD: fix up EINVAL from getdirentries on .zfs

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Without the change:
/.zfs
/.zfs/snapshot
find: /.zfs: Invalid argument

Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Closes #14774
This commit is contained in:
Mateusz Guzik 2023-04-20 09:00:03 +00:00 committed by Brian Behlendorf
parent 88b8777159
commit e37a89d5d0
1 changed files with 11 additions and 0 deletions
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11
module/os/freebsd/zfs/zfs_ctldir.c
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@ -679,6 +679,17 @@ zfsctl_root_readdir(struct vop_readdir_args *ap)
ASSERT3S(vp->v_type, ==, VDIR);
/*
* FIXME: this routine only ever emits 3 entries and does not tolerate
* being called with a buffer too small to handle all of them.
*
* The check below facilitates the idiom of repeating calls until the
* count to return is 0.
*/
if (zfs_uio_offset(&uio) == 3 * sizeof(entry)) {
return (0);
}
error = sfs_readdir_common(zfsvfs->z_root, ZFSCTL_INO_ROOT, ap, &uio,
&dots_offset);
if (error != 0) {