On Tue, 1 Jul 2025, Theodore Ts'o wrote:
On Mon, Jun 30, 2025 at 07:08:58PM +0100, Tim Woodall wrote:
Package: e2fsprogs
Version: 1.47.0-2
Severity: minor
Dear Maintainer,
Without using fuse at all:
# touch x
# setfacl -m u:root:rw x
# getfattr -m - -d x
# file: x
system.posix_acl_access=0sAgAAAAEABgD/////AgAGAAAAAAAEAAQA/////xAABgD/////IAAEAP////8=
When done via fuse2fs:
# which fuse2fs
/usr/bin/fuse2fs
# mkdir mnt
# fuse2fs img mnt
# touch mnt/x
# setfacl -m u:root:rw mnt/x
# getfattr -m - -d mnt/x
# file: mnt/x
system.posix_acl_access=0sAgAAAAEABgAAAAAAAgAGAAAAAAAEAAQAAAAAABAABgAAAAAAIAAEAAAAAAA=
Hmm, I can't replicate this on e2fsprogs 1.47.3~rc2-1. I believe this
was fixed by this commit:
commit 0111bdb70a9c460052387111414a2e2dc8c06822
Author: Darrick J. Wong <djw...@kernel.org>
Date: Thu Apr 24 14:41:49 2025 -0700
fuse2fs: remove posix acl translation
Remove the POSIX ACL format translation since libext2fs takes care of
that now.
This is very strange.
I cannot reproduce it on a trixie machine
root@trixie17-build:/build# fuse2fs -V
fuse2fs 1.47.2 (1-Jan-2025)
FUSE library version 3.17.2
using FUSE kernel interface version 7.40
fusermount3 version: 3.17.2
root@trixie17-build:/build# apt-cache policy fuse2fs
fuse2fs:
Installed: 1.47.2-3+b1
root@trixie17-build:~# uname -a
Linux trixie17-build.home.woodall.me.uk 6.12.27-amd64 #1 SMP PREEMPT_DYNAMIC
Debian 6.12.27-1 (2025-05-06) x86_64 GNU/Linux
root@trixie17-build:~# setfacl -m u:root:rw mnt/x
root@trixie17-build:~# getfattr -m - -d mnt/x
# file: mnt/x
system.posix_acl_access=0sAgAAAAEABgD/////AgAGAAAAAAAEAAQA/////xAABgD/////IAAEAP////8=
But when I build the latest code from master on a bookworm machine I
can:
root@dirac:/build/dump-sf/testing/scripts# /tmp/fuse2fs -V
fuse2fs 1.47.3-rc2 (12-Jun-2025)
FUSE library version 3.14.0
using FUSE kernel interface version 7.31
fusermount3 version: 3.14.0
root@dirac:/build/dump-sf/testing/scripts# uname -a
Linux dirac.home.woodall.me.uk 6.1.0-37-amd64 #1 SMP PREEMPT_DYNAMIC Debian
6.1.140-1 (2025-05-22) x86_64 GNU/Linux
root@dirac:/build/dump-sf/testing/scripts# getfattr -m - -d mnt/x
# file: mnt/x
system.posix_acl_access=0sAgAAAAEABgAAAAAAAgAGAAAAAAAEAAQAAAAAABAABgAAAAAAIAAEAAAAAAA=
And I've just realized that the trixie version is in bookworm-backports.
Installing that and I get the same:
root@dirac:/build/dump-sf/testing/scripts# apt-cache policy fuse2fs
fuse2fs:
Installed: 1.47.2-3~bpo12+1
root@dirac:/build/dump-sf/testing/scripts# fuse2fs -V
fuse2fs 1.47.2 (1-Jan-2025)
FUSE library version 3.14.0
using FUSE kernel interface version 7.31
fusermount3 version: 3.14.0
root@dirac:/build/dump-sf/testing/scripts# getfattr -m - -d mnt/x
# file: mnt/x
system.posix_acl_access=0sAgAAAAEABgAAAAAAAgAGAAAAAAAEAAQAAAAAABAABgAAAAAAIAAEAAAAAAA=
So it seems that my change is only needed on older kernels.
Tim.
