Thanks for the feedback. I suspected the kernel community might not
like this change. The suggestions by Linus seem worth trying out.
___
Ken
On Thu, Mar 3, 2011 at 10:29 AM, Mark Lord <kernel@xxxxxxxxxxxx> wrote:
> On 11-03-03 01:17 PM, Linus Torvalds wrote:
>> On Thu, Mar 3, 2011 at 9:45 AM, Linus Torvalds
>> <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>>>
>>> How many mounted filesystems do you have that it's so hard to keep track of?
>>
>> Btw, /proc/mounts will track them for you even if you don't have a
>> 'mount' binary that does.
>>
>> Parsing that is pretty trivial. If you have spaces or special
>> characters in your pathnames (you may control the mount paths, you may
>> not - I have no idea), you'll need to be able to handle the escape
>> format (\oct). But other than that, it's literally just
>>
>> - read all of /proc/mounts into a buffer
>>
>> - for each line, split by space, and you'll have the directory name
>> right there in the second field
>>
>> - do the unescaping ("\oct" -> character) if needed. It's good
>> practice. Test it.
>>
>> - just do a read-only remount on it.
>>
>> All done. No kernel changes necessary. It just works.
>
>
> This might be much less complex:
>
> #!/bin/sh
> echo s > /proc/sysrq-trigger
> echo u > /proc/sysrq-trigger
>
>
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