On Sun, 2019-07-07 at 00:35 -0600, Robin Laing wrote: > I want to modify a policy to allow a more localized directory for > creating thumbnails for videos and such. Presently the policy > "thumb_exec_t" is set for "thumb_home_t" > > I cannot find out in anything I have searched what the syntax > description for the two directories under this policy. > > /home/[^]+/\.cache/thumbnail(/.*)? > > /home/[^]+/\.thumbnail(/.*)? > > So, does the [^] mean the "user" home directory? > > Does the + mean this directory? or something else? That looks like regular expression, regex or regexp, to me. A very fancy, and hard to understand form of wildcarding. See: https://en.wikipedia.org/wiki/Regular_expression for a basic explanation. ^ carat marks a starting point [] square-brackets contain a bunch of characters that can be part of a match + plus allows the previous characters to match one, or more, times (e.g. if the wildcard specified matching ab, then abab and ababab would also match). . dot matches any character, or the dot itself when used inside brackets. Outside of brackets, you escape it with a backslash. * asterisk matches the previous thing, one or more times (slightly similar to how the plus operator works). ? question-mark matches the previous things zero or more times (slightly similar to how the plus and asterisk operators). I hate the mental gynmastics of understanding regex, but that wildcarding looks like (to me) that it means: Any file in any .cache/thumbnail or .thumbnail named sub-directories within a user's homespace (as opposed to such-named directories somewhere else in the directory tree). The path must start with /home and Match anything after that and Has ".cache/thumbnail" in the path (one or more times) then Any files inside them. If I've read it right, the match zero or more incidences means that things like the following filepaths will all be matches for those rules: /home/tim/stuff/.thumbnail/diagram.jpeg /home/tim/edits/.thumbnails/picture.jpg /home/tim/.cache/thumbnail/image.png /home/tim/.cache/thumbnails/graphic.tiff /home/tim/.cache/thumbnail/.cache/thumbnails/example.gif > There was a bug report about not being able to create thumbnails in > the current directory where the thumbnail program is run. Ideally > that is what I would like or a related directory. I want to create a > large number of thumbnails which would be more than the /home/{user} > directory. If you mean to create thumbnail files in the same directory as the original images, that's doable but with care. I've nearly always done things like the following for websites: /home/tim/pictures/ /home/tim/thumbnails/ Using adjacent directories, so I don't have recursion explosions. -- uname -rsvp Linux 3.10.0-957.21.3.el7.x86_64 #1 SMP Tue Jun 18 16:35:19 UTC 2019 x86_64 Boilerplate: All unexpected mail to my mailbox is automatically deleted. I will only get to see the messages that are posted to the mailing list. _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
