Quoting Samuel Thibault (2024-07-19 01:35:45) > Putting a more eye-catching title :)
Thank you, Samuel! I am still unable to see extended attributes in the translators when checking this call on Linux: sudo getfattr --dump --match=- /mnt/hurd/* Do others observe the same? Or did I maybe do something wrong with the virtual machine in which I ran Hurd under QEMU? Thanks! cheers, josch > Johannes Schauer Marin Rodrigues, le lun. 15 juil. 2024 11:38:37 +0200, a > ecrit: > > Hi, > > > > Quoting Johannes Schauer Marin Rodrigues (2024-05-21 11:50:25) > > > In any case, things go much further now. The next problem is some missing > > > DPKG_ROOT support in the hurd maintainer script. I opened a merge request > > > here: > > > > > > https://salsa.debian.org/hurd-team/hurd/-/merge_requests/1 > > > > thank you for uploading a new version of the hurd package including these > > DPKG_ROOT changes! I just confirmed that these indeed do work as intended > > and > > it is now possible to create minimal hurd tarballs containing kernel and > > sysvinit using chrootless mode on linux like this: > > > > mmdebstrap --variant=apt \ > > > > --include=passwd,debian-ports-archive-keyring,mmdebstrap,sysvinit-core,sysv-rc > > \ > > --customize-hook='chroot "$1" mmdebstrap \ > > --mode=chrootless --arch=hurd-i386 \ > > > > --include=sysvinit-core,sysv-rc,debian-ports-archive-keyring,gnumach-image-1-486 > > \ > > --variant=apt \ > > unstable /tmp/chroot.tar \ > > "deb http://ftp.ports.debian.org/debian-ports/ unstable main" > > \ > > "deb http://ftp.ports.debian.org/debian-ports/ unreleased > > main"' \ > > --customize-hook='copy-out /tmp/chroot.tar .'\ > > unstable /dev/null > > > > We could turn these tarballs into an ext4 file system but that would not be > > very useful yet, because all the translators would be missing from it. I was > > told by Samuel Thibault that since recently, translators are stored in > > extended > > attributes, namely in the gnu.translator xattr. So it should be possible to > > mimic what settrans does on Hurd on Linux using setxattr(2) or, in shell, > > setfattr(1). Namely, it should be possible to special-case the st() and md() > > functions in /usr/lib/hurd/setup-translators, such that the script can be > > run > > on Linux. > > > > To make sure that my settrans replacement on Linux does the right thing, I > > wanted to investigate how the extended attribute values look like on Hurd. > > For > > that purpose, I downloaded > > https://cdimage.debian.org/cdimage/ports/stable/hurd-i386/debian-hurd-20230608.img > > and also gnumach.gz, exec.static and ext2fs.static from the same location > > and > > then ran the qemu vm like this: > > > > qemu-system-i386 -nographic -net user,hostfwd=tcp:127.0.0.1:2222-:22 -net > > nic,model=e1000 \ > > -m 1G -kernel gnumach -append 'root=device:hd0s2 console=com0' \ > > --initrd './ext2fs.static > > --multiboot-command-line=${kernel-command-line} > > --host-priv-port=${host-port} --device-master-port=${device-port} > > --exec-server-task=${exec-task} -T typed ${root} $(task-create) > > $(task-resume),./exec.static $(exec-task=task-create)' \ > > -drive file=debian-hurd-20230608.img,format=raw > > > > I put http://ftp.ports.debian.org/debian-ports/ unstable and unreleased main > > into the apt sources.list and upgraded everything to the latest versions. > > Then > > I turned the machine off, mounted the filesystem of the qemu vm and > > extracted > > /boot/gnumach-1.8-486-up.gz, /hurd/exec.static and /hurd/ext2fs.static. I > > gunzipped the gnumach kernel and then ran qemu again with the updated files. > > Just to be sure, I ran /usr/lib/hurd/setup-translators -K again and powered > > off > > the machine. I then mounted the root filesystem and ran this: > > > > sudo getfattr --dump --match=- /mnt/hurd/* > > > > Unfortunately this came back empty. Should there not be extended attributes > > attached? > > > > What could I be missing? > > > > Thanks! > > > > cheers, josch
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