Re: [fuse-devel] mount option default_permissions

[Hans B. <han...@gm...>]

On 2017-02-14 9:11, Antonio SJ Musumeci wrote:
> As the documentation mentions the option when enabled causes the 
> kernel to do the permission checks. IE... based on what has already 
> been returned to the kernel from getattr. If not enabled it's your 
> responsibility to manage checking of permissions. The kernel and FUSE 
> just pass the request to your code and if there is a permission issue 
> you should return -EPERM or -EACCES.
Thanks, that helped a bit but not all the way :( I did read the 
documentation, but what effects it might have to omit this option is 
still unknown to me. All I know is that it seems to help to not use this 
option for some users experiencing access problem over e.g. Samba. But I 
am a bit reluctant to remove it by default unless I understand exactly 
what negative effects that would have.
>
> On Tue, Feb 14, 2017 at 2:47 PM, Hans Beckerus 
> <han...@gm... <mailto:han...@gm...>> wrote:
>
>     On 2017-02-11 3:13, Hans Beckerus wrote:
>     > Hello, my high-level file system has always enforced the use of the
>     > 'default_permissions' mount option.
>     > Now I got several users reporting problems with mounts exported
>     across
>     > e.g. network shares that behaves a bit odd.
>     > It does not seem to help when using allow_other either. I have no
>     > specific permission checks in my code.
>     > Would it still be safe to leave out default_permissions, because
>     that
>     > seems to be the one things that helps most (if not all) users.
>     >
>     > Thanks.
>     > Hans
>     Any one that could tell me if it should be ok to leave this out?
>     What is
>     the drawback by not using -odefault_permissions?
>
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