Well, it seems that the problem is the userspace tool itself. bash-4.3$ mkfifo --help bash: /usr/bin/mkfifo: Permission denied
On Sat, Feb 4, 2017 at 12:00 PM, Luca Dionisi <luca.dion...@gmail.com> wrote: > On Sat, Feb 4, 2017 at 11:43 AM, Oliver Grawert <o...@ubuntu.com> wrote: >> hi, >> Am Freitag, den 03.02.2017, 21:04 +0100 schrieb Luca Dionisi: >>> What is the best place to write (and read) a temporary FIFO file from >>> a confined snap application? >>> This is for simple IPC between 2 processes of the same snap. >>> Before attempting to snap the application I was using a fixed >>> filename >>> in /tmp. Admittedly poor solution. >>> The solution should be usable also with another packaging system. >>> >> well ... in case of snaps /tmp is a private directory that only your >> snap can access so it is actually a good place for such stuff ... > > It's worse than that, Jim! > > Inside the snap environment I can write files and directories both in > /tmp and in $XDG_RUNTIME_DIR. > What I cannot do anywhere is create a FIFO. > > bash-4.3$ mkfifo a > bash: /usr/bin/mkfifo: Permission denied > > What's the problem here? > > To be honest I should say that my tests have been conducted in LXD > containers. I don't know if the situation holds true also in real > machines. -- Snapcraft mailing list Snapcraft@lists.snapcraft.io Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/snapcraft
