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kornelski / cargo-deb

Make Debian packages directly from Rust/Cargo projects
https://lib.rs/cargo-deb
MIT License
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Add directory permissions to assets array? #73

Open jamesadevine opened 1 year ago

jamesadevine commented 1 year ago

Hi!

I have the need to create a directory with read and write permissions as part of package set up. The directory is already created by the cargo-deb generated package as it is where the systemd unit binary (app) lives:

assets = [
    ["target/release/app", "etc/abcdef/", "755"],
    ["target/release/app-configure", "usr/bin/", "755"]
]

A separate configuration binary (app-configure) allows users to configure app and the configuration files reside in /etc/abcdef. Because the default permissions of /etc/abcdef are set to read only, I need to modify the directory permissions so that app-configure can write files to /etc/abcdef.

I've read that there are two ways this can be achieved:

  1. override_dh_fixperms/execute_after_dh_fixperms followed by chmod <perms> <some directory>
  2. Adding a step to the postinst script with chmod <perms> <some directory>

I've opted for (2), with this postinst script:

#DEBHELPER#
chmod 0777 /etc/abcdef

I have two questions:

  1. Is (2) the best approach with cargo-deb?
  2. Would a nicer interface be to allow directories to be specified in the assets array?
rajnishkumarX commented 11 months ago

Allowing to set permissions for the directories as well as adding empty directories like /var/lib/app is a need indeed. Right now, I'm looking for a hacky way to achieve this.

kornelski commented 11 months ago

I know it would be useful, but as far as I can tell, the deb format doesn't support this.

People use postinst script for this, and I'm not sure if cargo-deb should be generating bash scripts automatically. What if the package already has a postinst script?