[systemd-devel] [PATCH 0/2] units: add and use ConditionInitrd= instead of checking for /etc/initrd-release.

Thomas Bächler thomas at archlinux.org
Wed Aug 27 13:48:26 PDT 2014


Am 27.08.2014 um 20:25 schrieb Ivan Shapovalov:
> On Wednesday 27 August 2014 at 20:19:45, Lennart Poettering wrote:	
>> On Wed, 27.08.14 20:26, Ivan Shapovalov (intelfx100 at gmail.com) wrote:
>>
>>> This is as proposed by Thomas in review of my hibernate-resume patchset.
>>>
>>> The objective benefit of this change is that in_initrd() function is used
>>> for checking, which not only checks for /etc/initrd-release, but also verifies
>>> that the rootfs is on a virtual device.
>>
>> If we add a new condition then I want to hear a strong case for it. I
>> mean, what's wrong with checking for initrd-release? Why would that not
>> suffice?

Whether or not we are in initrd is what we want to check. The existence
of /etc/initrd-release is an implementation detail. Having the same file
check as a condition in units duplicates the code that has been
implemented in the in_initrd() function.

In addition, someone who writes unit files should not be forced to know
these implementation details, but should have the proper condition
documented for the purpose.

That is all there is.


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