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From:
Vitaliy Makkoveev <mvs@openbsd.org>
Subject:
Re: Skip fuse FS by /usr/libexec/security
To:
Claudio Jeker <cjeker@diehard.n-r-g.com>
Cc:
Ingo Schwarze <schwarze@usta.de>, tech@openbsd.org
Date:
Sun, 19 May 2024 00:59:45 +0300

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> On 18 May 2024, at 12:46, Claudio Jeker <cjeker@diehard.n-r-g.com> wrote:
> 
> On Sat, May 18, 2024 at 10:08:09AM +0100, Kirill A. Korinsky wrote:
>> On Fri, 17 May 2024 23:41:41 +0100,
>> Vitaliy Makkoveev <mvs@openbsd.org> wrote:
>>> 
>>> I was confused with explicitly setting MNT_LOCAL on `mnt_flag' which
>>> seems to be not required. However, it is enough to drop MNT_LOCAL in
>>> corresponding `vfsconflist' entry.
>>> 
>> 
>> Just tested, and it indeed ok.
>> 
>> If I recall right, I've started my original patch as drop MNT_LOCAL in
>> vfsconflist but after that I've tried to keep it as option, that makes
>> things much more complicated and confusing, indeed.
>> 
>>> Index: sys/kern/vfs_init.c
>>> ===================================================================
>>> RCS file: /cvs/src/sys/kern/vfs_init.c,v
>>> diff -u -p -r1.43 vfs_init.c
>>> --- sys/kern/vfs_init.c	26 Dec 2019 13:30:54 -0000	1.43
>>> +++ sys/kern/vfs_init.c	17 May 2024 22:25:20 -0000
>>> @@ -92,7 +92,7 @@ static struct vfsconf vfsconflist[] = {
>>> #endif
>>> 
>>> #ifdef FUSE
>>> -	{ &fusefs_vfsops, MOUNT_FUSEFS, 18, 0, MNT_LOCAL,
>>> +	{ &fusefs_vfsops, MOUNT_FUSEFS, 18, 0, 0,
>>> 	    sizeof(struct fusefs_args) },
>>> #endif
>>> 
>> 
>> Shall we preserve comment with explanation why it's no MNT_LOCAL here?
>> 

It was suitable in fusefs_mount() to explain why we clean this flag.
But in the `vfsconflist' it is declared as declared.

>> BTW a bit above I see:
>> 
>>        { &nfs_vfsops, MOUNT_NFS, 2, 0, MNT_SWAPPABLE,
>> 	    sizeof(struct nfs_args) },
>> 
>> which seems quite wired because keep SWAP on NFS probably extreamly bad idea
>> due to network latency. Shall it be dropped as well? Have I missed something?
> 
> This is for pure diskless setups and "works". While it is not great to
> swap on NFS it is sometimes the only way. So no, this should remain.

So, no objections to commit my diff?