Re: [PATCH] portable mechanism to determine noatime

[Eric Cook <llua@xxxxxxx>]

On 12/05/2015 12:15 AM, Eric Cook wrote:
> On 12/04/2015 06:22 PM, Baptiste Daroussin wrote:
>> Hello,
>>
>> While updating the FreeBSD package to 5.2, I got a failure when
>> running the testsuite. Actually it was not a real failure are the said
>> test is known to not work on a noatime filesystem which is my case.
>>
>> The way to test for noatime rely on /etc/mtab which we do not have
>>
>> Here is a patch to use the mount command instead:
>> https://people.freebsd.org/~bapt/0001-Use-a-portable-mechanism-to-determine-if-the-filesys.patch
>>
>> Best regards,
>> Bapt
>>
> This patch doesn't work on illumos/solaris systems.
> 
Well, it isn't just unique to illumos/solaris.
If you build zsh in a directory that is on your root partition (say you don't have a separate /home partition)
`df .' returns `/', `grep /' matches every mount point and if any mount point is mounted noatime, the final grep succeeds.
But that problem still exist with the use of /etc/mtab.