[systemd-devel] stacked extension not working

[Umut Tezduyar Lindskog]

Hi, following works for us (for reference, configuration is printed at the end)

portablectl --now attach --extension=./stackupper ./base stackupper

However, if we move the cat from base/usr/bin/cat to stackupper/bin/cat it is not working. Seems like we cannot include any library/executable in the extension.

Are we missing something?


root at osboxes:/home/osboxes/Development# tree base/
base/
├── bin
├── dev
├── etc
│   ├── machine-id
│   ├── os-release
│   └── resolv.conf
├── lib
│   └── x86_64-linux-gnu
│       └── libc.so.6
├── lib64
│   ├── ld-2.32.so
│   └── ld-linux-x86-64.so.2
├── proc
├── root
├── run
├── sys
├── tmp
├── usr
│   ├── bin
│   │   ├── cat
│   │   ├── echo
│   │   └── tree
│   └── lib
│       └── systemd
│           └── system
└── var
    └── tmp

18 directories, 9 files

root at osboxes:/home/osboxes/Development# tree stackupper/
stackupper/
├── bin
│   └── umut
├── dev
├── etc
│   ├── machine-id
│   ├── resolv.conf
│   └── runtime
├── lib -> usr/lib
├── proc
├── root
├── run
├── sys
├── tmp
├── usr
│   ├── bin
│   └── lib
│       ├── extension-release.d
│       │   └── extension-release.base
│       └── systemd
│           └── system
│               └── stackupper.service
└── var
    └── tmp

17 directories, 6 files

root at osboxes:/home/osboxes/Development# cat stackupper/usr/lib/systemd/system/stackupper.service
[Service]
Type=oneshot
ExecStart=/usr/bin/cat /etc/os-release
root at osboxes:/home/osboxes/Development# systemctl --version
systemd 249 (249.4-1)
+PAM +AUDIT +SELINUX +APPARMOR +IMA +SMACK +SECCOMP +GCRYPT +GNUTLS -OPENSSL +ACL +BLKID +CURL +ELFUTILS -FIDO2 +IDN2 -IDN +IPTC +KMOD +LIBCRYPTSETUP -LIBFDISK +PCRE2 -PWQUALITY -P11KIT -QRENCODE +BZIP2 +LZ4 +XZ +ZLIB +ZSTD -XKBCOMMON +UTMP +SYSVINIT default-hierarchy=unified


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