"Snap" question
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"Snap" question
 
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Re: "Snap" question
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hi,
Am Donnerstag, den 10.12.2020, 18:13 -0500 schrieb Robert Heller: > I just installed xv under snap using the instructions here: > > https://snapcraft.io/install/xv/ubuntu > > And I am encountering a "weirdness" (at least to me). I can only > access and > view images that are under $HOME. Images located elsewhere yield a > file not > found error (the files are in fact there and I was able to view them > with xv > installed under CentOS 6 (from a standard RPM). outside world of their confinement vi interfaces, typically desktop apps have the home interface auto-connected (as you found) that enables you to access all iles in ~/ with the exception of any hidden dirs (so we can guarantee that a snapped app can not access any information of any other app unless you allow it to explicitly) often apps also have the removable-media interface available, that allows access to /mnt and /media ... so the easiest to give apps access to your additional disks would be to mount them there ... one part of file access confinement is managed by the kernels apparmor security mechanism, apparmor does not allow you to follow links t outside areas of teh defined confinement *but* it allows access to mounts, so another option to gain access to your disks is to simply set up a bind mount between their mount points and an accessible place (/home/mydisk-foo ... /media/mydisk-bar ... ) > Is there some "magic" to allow xv to view files anywhere on any file > system > (permissions permitting)? all that above said, the xv snap is clearly only available in the edge channel *and* only installable by defining --devmode ... the first one here tells you that this snap is not really done yet, typically things in edge are under development, untested, buggy etc second, if you install it with the --devmode option (as installing it from comandline will suggest to you) you turn off all confinement and as such, you should be able to access any place on the filesystem. did you use --jailmode instead of -devmode when installing it ? ciao oli -- ubuntu-users mailing list [hidden email] Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-users |
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Re: "Snap" question
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Re: "Snap" question
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hi,
Am Donnerstag, den 10.12.2020, 20:38 -0500 schrieb Robert Heller: > > > did you use --jailmode instead of -devmode when installing it ? > > > I used -edge and -devmode. Was that the mistake? > nope, for this snap --devmode is the best you can do, one thing you can try is to simply prefix your path (i.e. navigate to) /var/lib/snapd/hostfs, this is where a devmode snap is able to see a copy of the rootfs ... i.e. try /var/lib/snapd/hostfs/usr/share/pixmaps i took a look at the snap and it seems really not completely ready yet (i.e. it only provides the home interface by default while it should also offer removable-media, btw "snap connections xv" shows you the possible interfaces the snap packager has allowed and if they are connected) so you will have to work around some shortcomings ... ciao oli -- ubuntu-users mailing list [hidden email] Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-users |
Re: "Snap" question
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Re: "Snap" question
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hi,
Am Freitag, den 11.12.2020, 09:44 -0500 schrieb Robert Heller: > > OK, this will not do. I have used xv as my "standard" image viewer > application > and have used it to view images all over the various file systems > mounted on > my system. I will have to find a "real" (eg .deb) install of xv or > else I'll > have to find the source and build it that way. luckily rebuilding a snap (if you know where the snapcraft.yaml source file is [1]) is a trivial task of a few minutes ... i made a --classic version [2] of the snap in the store (classic snaps are running completely without confinement, while they are hard o get into the store (security review etc), they are easy to build): https://people.canonical.com/~ogra/snaps/xv_3.10a+dg20180618_amd64.snap download it, install it with: sudo snap install --dangerous --classic xv_3.10a+dg20180618_amd64.snap that should get you a fully functional xv ... note though that this is completely illegal, xv upsream denies any distribution of modified (including self built) binaries of the app via its license ... (which is likely also the reason it was removed from debian (and thus from ubuntu, as it only came from there as a sync)) indeed snaps from locally installed .snap files do not get updated etc but i doubt xv gets updated a lot anyway :) ciao oli [1] https://github.com/cmatsuoka/xv/tree/xv [2] https://paste.ubuntu.com/p/TGHHpCvKGP/ -- ubuntu-users mailing list [hidden email] Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-users |
Re: "Snap" question
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