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W dniu pią, 10.11.2017 o godzinie 19∶21 -0500, użytkownik Michael |
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Orlitzky napisał: |
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> On 11/10/2017 04:36 PM, Damo Brisbane wrote: |
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> > |
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> > Re for...keepdir, I found removing it then the /var/log/fabio folders |
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> > were not getting created, so keeping it in there. |
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> |
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> You need to tell the ebuild to create that directory one way or another. |
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> The "dodir" function will create the directory, but without the ".keep" |
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> file inside of it. However that may be "illegal" in this case; see below. |
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> |
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> |
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> > http://www.calculate-linux.org/main/en/using_ebuild, says this of *keepdir*: |
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> > |
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> > *Creates (if necessary) a |.keep| file in the given directory so that it |
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> > isn't auto-cleaned. Never create a |.keep| file yourself. If Portage |
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> > changes how |keepdir| works, then creating the file yourself will break |
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> > the package.* |
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> |
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> To my knowledge, no package manager will remove a non-empty directory, |
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> nor will it remove anything that the package manager did not itself |
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> create. To me that raises a question: why would I ever want to keep |
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> around an (otherwise empty) directory that was created by the package |
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> manager? |
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> |
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> I found this, |
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> |
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> https://dev.gentoo.org/~ulm/pms/head/pms.html#x1-15100013.2.2 |
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> |
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> which states |
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> |
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> Behaviour upon encountering an empty directory is undefined. Ebuilds |
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> must not attempt to install an empty directory. |
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> |
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> Certainly "keepdir" will make the directory non-empty, but with the |
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> additional (unwanted) side-effect that the directory won't be removed |
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> when the package is uninstalled. Thus "keepdir" doesn't seem like it was |
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> intended to address that technicality. So, I have two questions now... |
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Wrong. It creates a dotfile inside it, and removes it along with it. |
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> |
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> a) When would you want to use keepdir? |
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Because it works. |
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> |
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> b) What's the right way to prevent a directory from being empty? Touch |
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> a dummy file? |
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Use keepdir. |
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> |
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> and a meta-question, |
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> |
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> c) Seriously, empty directories are undefined behavior? |
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...and how could they be defined if a directory can be installed by |
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multiple packages and has no explicit ownership? |
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-- |
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Best regards, |
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Michał Górny |
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