Differential D51930

zfs: fixes for readdir
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Authored by kib on Aug 16 2025, 1:43 AM.

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Reviewers

rmacklem
markj
allanjude

Commits

rG9a3edc8d5dbc: zfs readdir: if there were no dirents to copy out, return EINVAL same as UFS
rGadba3e087173: zfs readdir: set *eofp to 1 on eof
rGcead6157cc1b: zfsctl_root_readdir: if there were no dirents to copy out, return EINVAL
rG1031208ebceb: zfsctl_root_readdir(): properly set eof

Summary

zfs control dir: properly set eof


zfs readdir: set *eofp to 1 on eof


zfs readdir: if there were no dirents to copy out, return EINVAL same as UFS

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rG FreeBSD src repository

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Event Timeline

kib created this revision.Aug 16 2025, 1:43 AM

Herald added subscribers: delphij, imp. · View Herald TranscriptAug 16 2025, 1:43 AM

kib requested review of this revision.Aug 16 2025, 1:43 AM

rmacklem added inline comments.Aug 16 2025, 1:57 AM

sys/contrib/openzfs/module/os/freebsd/zfs/zfs_ctldir.c
722	If you are returning some entrie(s) but the last one failed with ENAMETOOLONG, doesn't that mean there are still entrie(s) to read? (In other words, I would have said *eofp should be 0 for this case. ufs_readdir() doesn't set eofflag when it returns EINVAL, if I read the code correctly?)

Do not set *eofp when not at EOF, but copyout failed due to ENAMETOOLONG.

rmacklem accepted this revision.Aug 16 2025, 4:48 AM

This revision is now accepted and ready to land.Aug 16 2025, 4:48 AM

allanjude accepted this revision.Aug 17 2025, 5:42 PM

markj accepted this revision.Aug 18 2025, 12:59 PM

Closed by commit rG1031208ebceb: zfsctl_root_readdir(): properly set eof (authored by kib). · Explain WhyAug 18 2025, 1:31 PM

This revision was automatically updated to reflect the committed changes.

kib added a commit: rG1031208ebceb: zfsctl_root_readdir(): properly set eof.

kib added a commit: rGcead6157cc1b: zfsctl_root_readdir: if there were no dirents to copy out, return EINVAL.

kib added a commit: rGadba3e087173: zfs readdir: set *eofp to 1 on eof.

kib added a commit: rG9a3edc8d5dbc: zfs readdir: if there were no dirents to copy out, return EINVAL same as UFS.

kib added a reverting change: rG932e404f12c1: Revert "zfs readdir: if there were no dirents to copy out, return EINVAL same….Sep 19 2025, 5:12 PM

kib added a reverting change: rG72924ce99c7f: Revert "zfsctl_root_readdir: if there were no dirents to copy out, return….

Revision Contents
Changeset List

Path

Size

sys/

contrib/

openzfs/

module/

os/

freebsd/

zfs/

2 lines

Diff 160547

sys/contrib/openzfs/module/os/freebsd/zfs/zfs_ctldir.c

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