bug#26797: qemu looks for smbd at /usr/sbin

[Ludovic Courtès]

Ricardo Wurmus <address@hidden> skribis:

> Qemu comes with support for sharing files with a guest via Samba.  This
> is done by appending something like this to the qemu-system-*
> invocation:
>
>     … -net user,smb=$HOME/Downloads -net nic
>
> Qemu needs to be told *at configure time* where the smbd executable will
> be at runtime.  By default this is /usr/sbin/smbd.  Users can work
> around this problem by installing the “samba” package and creating a
> link from /usr/sbin/smbd to the actual executable.
>
> It would be better to fix this, but this would require adding samba as a
> dependency to Qemu, so that the location can be set at configure time.
> Alternatively, we could patch Qemu to look for smbd depending on an
> environment variable.

See commit b344c505f4dff2ecbe981f0a0a3c3d67b222dcca, which removed the
dependency and Samba.  Prior to that commit, QEMU recorded the absolute
file name of ‘smbd’.

The problem is that Samba is big:

--8<---------------cut here---------------start------------->8---
$ guix size qemu |tail -1
total: 710.5 MiB
$ guix size qemu samba |tail -1
total: 1203.5 MiB
--8<---------------cut here---------------end--------------->8---

Thus it’d be best if we modified QEMU to search for ‘smbd’ in $PATH.

WDYT?

Ludo’.