Public bug reported:
I'm not sure where the true fault is but the problem only happens after
updating the cpio package from 2.13+dfsg-2ubuntu0.3 to
2.13+dfsg-2ubuntu0.3. The zfs build creates .rpms which are then
converted to .debs. The failure message is:
```
name=zfs; \
version=2.1.15-1; \
arch=`rpm -qp ${name}-kmod-${version}.src.rpm --qf %{arch} | tail -1`; \
debarch=`dpkg --print-architecture`; \
pkg1=kmod-${name}*${version}.${arch}.rpm; \
fakeroot alien --bump=0 --scripts --to-deb --target=$debarch $pkg1 || exit 1; \
rm -f $pkg1
kmod-zfs-5.15.0-107-generic_2.1.15-1_amd64.deb generated
kmod-zfs-devel_2.1.15-1_amd64.deb generated
Unpacking of 'kmod-zfs-devel-5.15.0-107-generic-2.1.15-1.x86_64.rpm' failed at
/usr/share/perl5/Alien/Package/Rpm.pm line 168, <GETPERMS> line 315.
```
Looking at the alien source the command that fails is:
```
$this->do("rpm2cpio '".$this->filename."' | (cd $workdir; $decomp cpio
--extract --make-directories --no-absolute-filenames
--preserve-modification-time) 2>&1")
or die "Unpacking of '".$this->filename."' failed";
```
Examining the content of the .rpm:
```
# rpm -qlv kmod-zfs-devel-5.4.0-174-lowlatency-2.1.15-1.x86_64.rpm
lrwxrwxrwx 1 root root 34 May 20 09:14
/usr/src/spl-2.1.15/5.4.0-174-lowlatency -> ../zfs-2.1.15/5.4.0-174-lowlatency
drwxr-xr-x 2 root root 0 May 20 09:14
/usr/src/zfs-2.1.15/5.4.0-174-lowlatency
-rw-r--r-- 1 root root 164782 May 20 09:14
/usr/src/zfs-2.1.15/5.4.0-174-lowlatency/Module.symvers
lrwxrwxrwx 1 root root 11 May 20 09:14
/usr/src/zfs-2.1.15/5.4.0-174-lowlatency/spl.release -> zfs.release
lrwxrwxrwx 1 root root 12 May 20 09:14
/usr/src/zfs-2.1.15/5.4.0-174-lowlatency/spl_config.h -> zfs_config.h
-rw-r--r-- 1 root root 9 May 20 09:14
/usr/src/zfs-2.1.15/5.4.0-174-lowlatency/zfs.release
-rw-r--r-- 1 root root 28937 May 20 09:14
/usr/src/zfs-2.1.15/5.4.0-174-lowlatency/zfs_config.h
```
Changing the command being executed for testing purposes:
```
# apt-cache policy cpio; rm -rf /tmp/x; mkdir /tmp/x ; rpm2cpio
kmod-zfs-devel-5.4.0-174-lowlatency-2.1.15-1.x86_64.rpm | (cd /tmp/x; cpio -v
--extract --make-directories --no-absolute-filenames
--preserve-modification-time) ; echo $?
cpio:
Installed: 2.13+dfsg-2ubuntu0.3
Candidate: 2.13+dfsg-2ubuntu0.4
Version table:
2.13+dfsg-2ubuntu0.4 500
500
https://bth-mirror-00.ci.zynstra.com/apt/2024-05-19/archive.ubuntu.com/ubuntu
focal-updates/main amd64 Packages
500
https://bth-mirror-00.ci.zynstra.com/apt/2024-05-19/security.ubuntu.com/ubuntu
focal-security/main amd64 Packages
*** 2.13+dfsg-2ubuntu0.3 100
100 /var/lib/dpkg/status
2.13+dfsg-2 500
500
https://bth-mirror-00.ci.zynstra.com/apt/2024-05-19/archive.ubuntu.com/ubuntu
focal/main amd64 Packages
./usr/src/spl-2.1.15/5.4.0-174-lowlatency
./usr/src/zfs-2.1.15/5.4.0-174-lowlatency
./usr/src/zfs-2.1.15/5.4.0-174-lowlatency/Module.symvers
./usr/src/zfs-2.1.15/5.4.0-174-lowlatency/spl.release
./usr/src/zfs-2.1.15/5.4.0-174-lowlatency/spl_config.h
./usr/src/zfs-2.1.15/5.4.0-174-lowlatency/zfs.release
./usr/src/zfs-2.1.15/5.4.0-174-lowlatency/zfs_config.h
381 blocks
0
```
vs
```
# apt-cache policy cpio; rm -rf /tmp/x; mkdir /tmp/x ; rpm2cpio
kmod-zfs-devel-5.4.0-174-lowlatency-2.1.15-1.x86_64.rpm | (cd /tmp/x; cpio -v
--extract --make-directories --no-absolute-filenames
--preserve-modification-time) ; echo $?
cpio:
Installed: 2.13+dfsg-2ubuntu0.4
Candidate: 2.13+dfsg-2ubuntu0.4
Version table:
*** 2.13+dfsg-2ubuntu0.4 500
500
https://bth-mirror-00.ci.zynstra.com/apt/2024-05-19/archive.ubuntu.com/ubuntu
focal-updates/main amd64 Packages
500
https://bth-mirror-00.ci.zynstra.com/apt/2024-05-19/security.ubuntu.com/ubuntu
focal-security/main amd64 Packages
100 /var/lib/dpkg/status
2.13+dfsg-2 500
500
https://bth-mirror-00.ci.zynstra.com/apt/2024-05-19/archive.ubuntu.com/ubuntu
focal/main amd64 Packages
cpio: ./usr/src/spl-2.1.15/5.4.0-174-lowlatency: Cannot open: No such file or
directory
./usr/src/spl-2.1.15/5.4.0-174-lowlatency
./usr/src/zfs-2.1.15/5.4.0-174-lowlatency
./usr/src/zfs-2.1.15/5.4.0-174-lowlatency/Module.symvers
./usr/src/zfs-2.1.15/5.4.0-174-lowlatency/spl.release
./usr/src/zfs-2.1.15/5.4.0-174-lowlatency/spl_config.h
./usr/src/zfs-2.1.15/5.4.0-174-lowlatency/zfs.release
./usr/src/zfs-2.1.15/5.4.0-174-lowlatency/zfs_config.h
381 blocks
2
```
** Affects: cpio (Ubuntu)
Importance: Undecided
Status: New
--
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2066157
Title:
cpio 2.13+dfsg-2ubuntu0.4 breaks zfs build (alien command fails)
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