Re: Various mount options have changed in Core Update 169

["Peter Müller" <peter.mueller@ipfire.org>]

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Hello Michael,

thanks for your reply.

> Hello,
> 
> I suppose this is coming from changing dracut.

As discussed on the phone already, I don't think dracut is the root cause here, since
the mount options are fine on systems running Core Update 168. Some change in Core Update
169 caused this issue.

> Unless I am reading your diff wrong, those options have been added which is a good thing?!

No, it is the other way round. Silly me screwed up the diff. :-/

Anyway, commit 54bd60b67b477e5d5814293a74086dff1c21ac69 addresses all of them except for
/dev. I searched and was unable to find any component where /dev is (re)mounted in the way
it is shown in the output of "mount".

Do you have any ideas?

Thanks, and best regards,
Peter Müller

> 
> -Michael
> 
>> On 20 Jun 2022, at 21:34, Peter Müller <peter.mueller(a)ipfire.org> wrote:
>>
>> Hello *,
>>
>> while pre-testing Core Update 169, it came to my attention that, for some reason,
>> various mount options have changed since Core Update 168, lacking options such as
>> "nodev", "noexec", "nosuid", which means a security downgrade.
>>
>> The complete delta is as follows:
>>
>> $ diff -Naur before after
>> --- before	2022-06-20 20:04:32.436632074 +0000
>> +++ after	2022-06-20 20:04:34.500401575 +0000
>> @@ -1,12 +1,12 @@
>> -devpts on /dev/pts type devpts (rw,relatime,gid=5,mode=620,ptmxmode=000)
>> +devpts on /dev/pts type devpts (rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
>> /dev/sda1 on /boot type ext4 (rw,relatime)
>> /dev/sda2 on /boot/efi type vfat (rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=ascii,shortname=mixed,errors=remount-ro)
>> /dev/sda4 on / type ext4 (rw,relatime)
>> -devtmpfs on /dev type devtmpfs (rw,relatime,size=1963708k,nr_inodes=490927,mode=755)
>> +devtmpfs on /dev type devtmpfs (rw,nosuid,noexec,size=1949992k,nr_inodes=487498,mode=755)
>> efivarfs on /sys/firmware/efi/efivars type efivarfs (rw,relatime)
>> none on /sys/fs/cgroup type cgroup2 (rw,relatime)
>> -/proc on /proc type proc (rw,relatime)
>> -/run on /run type tmpfs (rw,nosuid,nodev,relatime,size=8192k,mode=755)
>> -/sys on /sys type sysfs (rw,relatime)
>> -tmpfs on /dev/shm type tmpfs (rw,relatime)
>> +proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
>> +sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
>> +tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev,noexec)
>> +tmpfs on /run type tmpfs (rw,nosuid,nodev,noexec,mode=755)
>> /var/lock on /var/lock type tmpfs (rw,nosuid,nodev,relatime,size=8192k)
>>
>> I cannot recall of having this explicitly changed anywhere, and don't understand
>> the root cause for this (unwanted) change. Could somebody please point me into the
>> right direction? :-)
>>
>> Thanks in advance, and best regards,
>> Peter Müller
>