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bug#53752: guix home symlink permissions
From: |
Thiago Jung Bauermann |
Subject: |
bug#53752: guix home symlink permissions |
Date: |
Thu, 03 Feb 2022 16:56:06 -0300 |
Hello Zacchaeus,
Em quinta-feira, 3 de fevereiro de 2022, às 15:08:12 -03, Zacchaeus Scheffer
escreveu:
> I finally migrated my home configuration to guix home. However, it seems
> guix home creates all symlinks with 777 permissions. This causes
> problems with openssh as it will not recognize my
> ~/.ssh/authorized_keys. It seems the directories have reasonable
> permissions (maybe because they already existed?), but it seems like
> someone could in theory edit the symlinks in-place (though I wasn't able
> to figure that out).
In Linux, symlink permissions are meaningless. From the chmod(1) man page:
“chmod never changes the permissions of symbolic links; the chmod system
call cannot change their permissions. This is not a problem since the
permissions of symbolic links are never used. However, for each symbolic
link listed on the command line, chmod changes the permissions of the
pointed-to file. In contrast, chmod ignores symbolic links encountered
during recursive directory traversals.”
So AFAIK there’s nothing that guix home can do about that.
I don’t know what that implies for OpenSSH and authorized_keys, though.
--
Thanks,
Thiago