Page MenuHomeFreeBSD
Differential D29108

linux: support AT_EMPTY_PATH flag in fchownat(2)
ClosedPublic
Actions

Authored by trasz on Mar 6 2021, 8:04 PM.
Tags
None
Referenced Files
Unknown Object (File)
Tue, Aug 5, 1:10 PM
Unknown Object (File)
Sun, Aug 3, 8:52 AM
Unknown Object (File)
Wed, Jul 30, 9:59 AM
Unknown Object (File)
Mon, Jul 28, 6:05 AM
Unknown Object (File)
Sun, Jul 20, 11:14 AM
Unknown Object (File)
Sat, Jul 19, 12:45 PM
Unknown Object (File)
Wed, Jul 16, 2:35 AM
Unknown Object (File)
Tue, Jul 15, 12:03 PM
View All Files
Subscribers
imp

Details

Reviewers
kib
Group Reviewers
Linux Emulation
Commits
rG1e44a4ea0d4a: linux: support AT_EMPTY_PATH flag in fchownat(2)
rGe47823b8312b: linux: support AT_EMPTY_PATH flag in fchownat(2)
Summary

This fixes rsyslog package installation scripts in Bionic.

Diff Detail

Repository
rS FreeBSD src repository - subversion
Lint
Lint Passed
Unit
No Test Coverage
Build Status
Buildable 37649
Build 34538: arc lint + arc unit

Event Timeline

trasz created this revision.Mar 6 2021, 8:04 PM
Herald added a subscriber: imp. · View Herald TranscriptMar 6 2021, 8:04 PM
trasz requested review of this revision.Mar 6 2021, 8:04 PM
Harbormaster completed remote builds in B37642: Diff 85280.Mar 6 2021, 8:05 PM
trasz added reviewers: Linux Emulation, kib.Mar 6 2021, 8:06 PM
kib added a comment.Mar 6 2021, 8:32 PM

I think the flag should be implemented on the FreeBSD side.

Also, your patch does not handle AT_FDCWD case, that is described in the Linux man page.

sys/compat/linux/linux_file.c
1741–1742

You broke detection of the unknown flags.

trasz updated this revision to Diff 85291.Mar 7 2021, 11:59 AM

Fix unknown flag detection, detect AT_FDCWD.

Harbormaster completed remote builds in B37649: Diff 85291.Mar 7 2021, 12:00 PM
trasz added a comment.EditedMar 7 2021, 12:02 PM

I've considered doing it natively first - that would allow us to support AT_FDCWD with AT_EMPTY_PATH - but after a few hours I gave up. I'd strongly prefer committing this small change instead of making another attempt at understanding namei().

trasz updated this revision to Diff 85292.Mar 7 2021, 12:04 PM

Fix warning message.

Harbormaster completed remote builds in B37650: Diff 85292.Mar 7 2021, 12:04 PM
trasz added a comment.Mar 8 2021, 3:26 PM

(Tinderboxed.)

trasz updated this revision to Diff 87480.Apr 15 2021, 12:27 PM

Reimplement.

Harbormaster completed remote builds in B38589: Diff 87480.Apr 15 2021, 12:27 PM
kib accepted this revision.Apr 15 2021, 12:46 PM

BTW there are more Linux syscalls taking AT_EMPTY_PATH

sys/compat/linux/linux_file.c
1760

Extra ()

This revision is now accepted and ready to land.Apr 15 2021, 12:46 PM
trasz added inline comments.Apr 15 2021, 12:51 PM
sys/compat/linux/linux_file.c
1760

This is copy/pasted all over the tree; I'll fix it in a later sweep.

trasz added a comment.Apr 16 2021, 9:55 AM

(Tinderboxed.)

Closed by commit rGe47823b8312b: linux: support AT_EMPTY_PATH flag in fchownat(2) (authored by trasz). · Explain WhyApr 16 2021, 3:29 PM
This revision was automatically updated to reflect the committed changes.
trasz added a commit: rGe47823b8312b: linux: support AT_EMPTY_PATH flag in fchownat(2).
trasz added a commit: rG1e44a4ea0d4a: linux: support AT_EMPTY_PATH flag in fchownat(2).Feb 17 2022, 10:56 AM

Revision Contents
Changeset List

PathSize
sys/
compat/
linux/
12 lines
kern/
15 lines
sys/
1 line

Diff 85291

View Options

sys/compat/linux/linux_file.c

Loading...
View Options

sys/kern/vfs_syscalls.c

Loading...
View Options

sys/sys/syscallsubr.h

Loading...