Pixelorama snap - need help

Aury88 · January 8, 2020, 9:58am

Hi guys!
I’m trying to snap the Pixelorama sprite editor so following this great how-to from @popey I made the directory called “pixelorama”, and in that I downloaded and put the .pck and x86_64 linux files under a “files” folder (plus a “Brushes” and a “Palettes” directories found in the downloaded zip) and put this yaml under a “snap” folder:

name: pixelorama
base: core18
version: '0.6'
summary: Pixelorama sprite editor
description: |
  Your free & open-source 2D sprite editor, made by Orama Interactive in the Godot Engine, using GDScript!

grade: devel
confinement: strict

apps:
  pixelorama:
    command: desktop-launch "$SNAP/Pixelorama.x86_64"
    environment:
      LD_LIBRARY_PATH: "$LD_LIBRARY_PATH:/usr/lib/$SNAPCRAFT_ARCH_TRIPLET/pulseaudio"
    plugs:
      - opengl
      - network
      - network-bind
      - pulseaudio
      - x11
      - desktop
      - joystick

parts:
  editor:
    plugin: dump
    source: files/
    after: [desktop-glib-only]
    stage-packages:
      - libgl1-mesa-dri
      - libglu1-mesa
      - libgl1-mesa-glx
      - libpulse0
      - libxcursor1
      - libxinerama1
      - libxrandr2
      - libxi6
      - libasound2
  desktop-glib-only:  
        build-packages:
          - libglib2.0-dev
        plugin: make
        source: https://github.com/ubuntu/snapcraft-desktop-helpers.git
        source-subdir: glib-only
        stage-packages:
          - libglib2.0-bin

I executed the snapcraft command and the sudo snap install pixelorama_0.6_amd64.snap --dangerous command both with success.

But when I try to launch the snap I obtain this error:

aurelio@aurelio-Lenovo-B51-80:~/snap/pixelorama$ pixelorama 
/snap/pixelorama/x2/bin/desktop-launch: line 528: /snap/pixelorama/x2/Pixelorama.x86_64: Permission denied
/snap/pixelorama/x2/bin/desktop-launch: line 528: exec: /snap/pixelorama/x2/Pixelorama.x86_64: cannot execute: Permission denied

I don’t know how to solve this
what have I done wrong?

jsmolka · January 8, 2020, 11:22am

You tried
$ sudo pixelorama
too?

ogra · January 8, 2020, 11:57am

check your systemd journal for “DENIED” messages …

oh, and is the binary actually executable ?

Aury88 · January 9, 2020, 4:44pm

@jsmolka Yes, that was my first try but same result:

~$ sudo pixelorama
[sudo] password di aurelio: 
mkdir: cannot create directory '/run/user/0': Permission denied
realpath: '': No such file or directory
realpath: '': No such file or directory
realpath: '': No such file or directory
realpath: '': No such file or directory
realpath: '': No such file or directory
realpath: '': No such file or directory
realpath: '': No such file or directory
realpath: '': No such file or directory
/snap/pixelorama/x2/bin/desktop-launch: line 528: /snap/pixelorama/x2/Pixelorama.x86_64: Permission denied
/snap/pixelorama/x2/bin/desktop-launch: line 528: exec: /snap/pixelorama/x2/Pixelorama.x86_64: cannot execute: Permission denied

@ogra

aurelio@aurelio-Lenovo-B51-80:~$ journalctl
-- Logs begin at gio 2020-01-09 17:51:50 CET, end at gio 2020-01-09 17:51:56 CET. --
gen 09 17:51:50 aurelio-Lenovo-B51-80 systemd-journald[402]: Runtime journal (/run/log/journal/) is 9.5M, max 38.0M, 28.5M free.
gen 09 17:51:51 aurelio-Lenovo-B51-80 sudo[32575]: pam_unix(sudo:session): session closed for user root
gen 09 17:51:53 aurelio-Lenovo-B51-80 sudo[32577]:  aurelio : TTY=pts/4 ; PWD=/home/aurelio ; USER=root ; COMMAND=/bin/journalctl --vacuum-time=1s
gen 09 17:51:53 aurelio-Lenovo-B51-80 sudo[32577]: pam_unix(sudo:session): session opened for user root by (uid=0)
gen 09 17:51:53 aurelio-Lenovo-B51-80 sudo[32577]: pam_unix(sudo:session): session closed for user root
gen 09 17:51:56 aurelio-Lenovo-B51-80 audit[32670]: AVC apparmor="DENIED" operation="open" profile="snap.pixelorama.pixelorama" name="/home/aurelio/Documenti/" pid=32670 comm="head" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
gen 09 17:51:56 aurelio-Lenovo-B51-80 kernel: audit: type=1400 audit(1578588716.564:102): apparmor="DENIED" operation="open" profile="snap.pixelorama.pixelorama" name="/home/aurelio/Documenti/" pid=32670 comm="head" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000

and

aurelio@aurelio-Lenovo-B51-80:~$ ls -la /snap/pixelorama/x2/bin
total 18
drwxr-xr-x 2 root root    37 gen  8 10:23 .
drwxrwxr-x 9 root root   195 gen  8 10:23 ..
-rwxr-xr-x 1 root root 18093 gen  8 10:22 desktop-launch

ogra · January 9, 2020, 4:54pm

well, you cut off all the relevant info … rather do something like:

$ journalctl | grep DEN

and make sure the full width of the lines is in your paste …

your app binary is in /snap/pixelorama/x2 not in the bin/ subdir … i should have phrased the question differently … so lets try again:

is Pixelorama.x86_64 actually executable ?

Aury88 · January 9, 2020, 5:09pm

I realized it but just as I was correcting you replied. you are too fast!

you can see the complete string in my previous post.

Also checked the bin and, as you suspected, it was not executable. so I retry the snapcraft procedure after changing the Pixelorama.x86_64 permission in the “files” directory.

now it works! thank you!

ogra · January 9, 2020, 5:31pm

for the one DENIED message you probably want to add - home to your plugs, so the app can access your Documents dir …

Aury88 · January 9, 2020, 6:10pm

done! thank you again.

now systemD report only these denied messages:

gen 09 19:02:55 aurelio-Lenovo-B51-80 audit[8698]: AVC apparmor="DENIED" operation="open" profile="snap.pixelorama.pixelorama" name="/proc/8698/mounts" pid=8698 comm="Pixelorama.x86_" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000
gen 09 19:02:55 aurelio-Lenovo-B51-80 kernel: kauditd_printk_skb: 20 callbacks suppressed
gen 09 19:02:55 aurelio-Lenovo-B51-80 kernel: audit: type=1400 audit(1578592975.781:1835): apparmor="DENIED" operation="open" profile="snap.pixelorama.pixelorama" name="/proc/8698/mounts" pid=8698 comm="Pixelorama.x86_" requested_mask="r" denied_mask="r" fsuid=1000 ouid=1000

but the application seems usable (though with some missing brushes and palettes)

aurelio@aurelio-Lenovo-B51-80:~/snap/pixelorama$ pixelorama
Godot Engine v3.1.2.stable.official - https://godotengine.org
OpenGL ES 2.0 Renderer: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2) 
WARNING: _png_warn_function: iCCP: profile 'ICC profile': 'RGB ': RGB color space not permitted on grayscale PNG
   At: drivers/png/image_loader_png.cpp:71.
WARNING: _png_warn_function: iCCP: profile 'ICC profile': 'RGB ': RGB color space not permitted on grayscale PNG
   At: drivers/png/image_loader_png.cpp:71.
ERROR: load_image: Error opening file: Brushes/./parts/icon.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./parts/splash.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./x1/icon.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./x1/splash.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./current/icon.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./current/splash.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./prime/icon.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./prime/splash.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./snap/icon.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./snap/splash.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./stage/icon.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./stage/splash.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./files/icon.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./files/splash.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./common/icon.png
   At: core/io/image_loader.cpp:56.
ERROR: load_image: Error opening file: Brushes/./common/splash.png
   At: core/io/image_loader.cpp:56.
WARNING: cleanup: ObjectDB Instances still exist!
   At: core/object.cpp:2087.
ERROR: clear: Resources Still in use at Exit!
   At: core/resource.cpp:425.

jdstrand · January 9, 2020, 6:39pm

This is usually just noise, but you can make it go away by plugging and connecting the ‘mount-observe’ interface.

Aury88 · January 9, 2020, 9:25pm

I confirm it seems only noise so I will not try to plug and connect the mount-observe interface.