Re: How to launch a bhyve vm as normal user,without being root

From: Mario Marietto <marietto2008_at_gmail.com>
Date: Mon, 17 Jun 2024 20:15:20 UTC
nano /usr/local/etc/doas.conf :

permit nopass :wheel as root cmd bhyve-win
permit nopass :wheel as root cmd bhyve-lin
permit nopass :wheel as root cmd /bhyve/12-Win-11-vm12

[marietto@marietto /bhyve]==> doas 12-Win-11-vm12
doas: Operation not permitted

On Mon, Jun 17, 2024 at 9:50 PM Mark Peek <mp@freebsd.org> wrote:

> Likely because you don't have this in the doas.conf file:
>
> permit nopass :wheel as root cmd /bhyve/12-Win-11-vm12
>
>
> On Mon, Jun 17, 2024 at 11:35 AM Mario Marietto <marietto2008@gmail.com>
> wrote:
>
>> If I keep the bhyve scripts in /usr/sbin,it works. But I want to keep the
>> bhyve scripts in /bhyve and I don't want to keep them in /usr/sbin. For
>> this reason I've added the path /bhyve to /home/marietto/.zshrc like this :
>>
>> # ~/.zshrc
>>
>> # zsh autocompletion for sudo and doas
>> zstyle ":completion:*:(sudo|su|doas):*" command-path /usr/local/bin
>> /usr/local/sbin /usr/sbin /usr/bin /bin /sbin /bhyve
>>
>> and in /root/.zshrc :
>>
>> # zsh autocompletion for sudo and doas
>> zstyle ":completion:*:(sudo|su|doas):*" command-path /usr/local/bin
>> /usr/local/sbin /usr/sbin /usr/bin /bin /sbin /bhyve
>>
>> but when I try to run the vm like this :
>>
>> [marietto@marietto /bhyve]==> doas 12-Win-11-vm12
>>
>> it says :
>>
>> doas: 12-Win-11-vm12: command not found
>>
>> and when I do :
>>
>> [marietto@marietto /bhyve]==> doas ./12-Win-11-vm12
>>
>> it says :
>>
>> doas: Operation not permitted
>>
>> Why ?
>>
>>
>> On Mon, Jun 17, 2024 at 7:53 PM Mark Peek <mp@freebsd.org> wrote:
>>
>>> Likely need to add this as it is what you are passing to doas as the
>>> command to execute:
>>>
>>> permit nopass :wheel as root cmd /usr/sbin/12-Win-11-vm12
>>>
>>> Mark
>>>
>>> On Mon, Jun 17, 2024 at 10:40 AM Mario Marietto <marietto2008@gmail.com>
>>> wrote:
>>> >
>>> > [marietto@marietto /bhyve]==> sudo cp 12-Win-11-vm12 /usr/sbin
>>> >
>>> > [marietto@marietto /bhyve]==> nano /usr/sbin/12-Win-11-vm12
>>> >
>>> > #!/bin/sh
>>> >
>>> > bhyve-win -S -c sockets=4,cores=2,threads=1 -m 8G -w -H \
>>> > -S -c sockets=4,cores=2,threads=1 -m 8G -w -H \
>>> > -s 0,hostbridge \
>>> > -s 1,ahci-hd,/mnt/da4p2/bhyve/img/Windows/Windows11.img,bootindex=1 \
>>> > -s 2,ahci-hd,/dev/$vmdisk5 \
>>> > -s 8:0,passthru,2/0/0 \
>>> > -s 8:1,passthru,2/0/1 \
>>> > -s 8:2,passthru,2/0/2 \
>>> > -s 8:3,passthru,2/0/3 \
>>> > -s 13,virtio-net,tap12 \
>>> > -s 29,fbuf,tcp=0.0.0.0:5912,w=1600,h=950,wait \
>>> > -s 30,xhci,tablet \
>>> > -s 31,lpc \
>>> > -l bootrom,/usr/local/share/uefi-firmware/BHYVE_UEFI_CODE.fd \
>>> > vm0:12 < /dev/null & sleep 2 && vncviewer 0:12
>>> >
>>> > [marietto@marietto /bhyve]==> sudo chmod 0755 /usr/sbin/12-Win-11-vm12
>>> >
>>> > [marietto@marietto /bhyve]==> sudo nano /usr/local/etc/doas.conf
>>> >
>>> > permit nopass :wheel as root cmd /usr/sbin/bhyve-win
>>> > permit nopass :wheel as root cmd /usr/sbin/bhyve-lin
>>> >
>>> > [marietto@marietto /bhyve]==> doas /usr/sbin/12-Win-11-vm12
>>> > doas: Operation not permitted
>>> >
>>> > BUT :
>>> >
>>> > [marietto@marietto /bhyve]==> sudo nano /usr/sbin/hallo
>>> >
>>> > #!/bin/sh
>>> > echo hallo $USER
>>> >
>>> > [marietto@marietto /bhyve]==> sudo chmod 0755 /usr/sbin/hallo
>>> >
>>> > [marietto@marietto /bhyve]==> sudo nano /usr/local/etc/doas.conf
>>> >
>>> > permit nopass :wheel as root cmd hallo
>>> >
>>> > [marietto@marietto /bhyve]==> doas hallo
>>> >
>>> > BOOM ! it works :
>>> >
>>> > hallo root
>>> >
>>> > On Mon, Jun 17, 2024 at 6:54 PM Dave Cottlehuber <dch@skunkwerks.at>
>>> wrote:
>>> >>
>>> >> On Mon, 17 Jun 2024, at 14:12, Mario Marietto wrote:
>>> >> > Nice idea,but it does not work :
>>> >> >
>>> >> > nano /home/marietto/.zshrc
>>> >> >
>>> >> > # ~/.zshrc
>>> >>
>>> >> Hi Mario, I think your zsh stuff is getting in the way
>>> >> here. Your zshrc function is not visible to the root user,
>>> >> as doas cleans up all the env and so your function is unknown.
>>> >>
>>> >> So start off with something without bhyve, make sure you are in
>>> >> wheel group, and add a shell script called
>>> >> /usr/local/bin/hallo:
>>> >>
>>> >> ```
>>> >> #!/bin/sh
>>> >> echo hallo $USER
>>> >> ```
>>> >>
>>> >> chmod 0755 /usr/local/bin/hallo
>>> >>
>>> >> ```
>>> >> # /usr/local/etc/doas.conf (per doas.conf manpage)
>>> >> permit nopass :wheel as root cmd /usr/local/bin/hallo
>>> >> ```
>>> >>
>>> >> $ doas /usr/local/bin/hallo
>>> >> hallo root
>>> >>
>>> >> then replace your bhyve commands in the hallo script.
>>> >>
>>> >> Off the top of my head there's no reason for bhyve to need
>>> >> anything different to hallo script.
>>> >> A+
>>> >> Dave
>>> >
>>> >
>>> >
>>> > --
>>> > Mario.
>>>
>>
>>
>> --
>> Mario.
>>
>

-- 
Mario.