Hi
I’m trying to run the legato javaHelloWorld example program on a mangOH device. I compile it with this command:
$ mkapp -v -t wp85 javaHelloWorld.adef -s ${LEGATO_ROOT}/componentswhich works fine. Then I push it to the mangOH like so:
$ instapp javaHelloWorld.wp85.update 192.168.2.2
Applying update from file 'javaHelloWorld.wp85.update' to device at address '192.168.2.2'.
Unpacking package: 0%
Applying update: 100% ++++++++++++++++++++++++++++++++++++++++++++++++++
SUCCESS
Done
However, the program can’t be run on the mangOH:
root@swi-mdm9x15:~# app start javaHelloWorld
Starting app 'javaHelloWorld'...
There was an error. Application 'javaHelloWorld' could not be started.
root@swi-mdm9x15:~# logread -f | grep "Hello"
Jan 8 21:18:19 swi-mdm9x15 user.info Legato: INFO | supervisor[560]/supervisor T=main | sandbox.c ImportDir() 740 | Imported directory '/legato/systems/current/apps/javaHelloWorld/read-only/bin' into sandbox '/tmp/legato/sandboxes/javaHelloWorld/bin'.
Jan 8 21:18:19 swi-mdm9x15 user.info Legato: INFO | supervisor[560]/supervisor T=main | sandbox.c ImportDir() 740 | Imported directory '/legato/systems/current/apps/javaHelloWorld/read-only/bin' into sandbox '/tmp/legato/sandboxes/javaHelloWorld/bin'.
Jan 8 21:18:19 swi-mdm9x15 user.info Legato: INFO | supervisor[560]/supervisor T=main | sandbox.c ImportFile() 693 | Imported file '/dev/log' into sandbox '/tmp/legato/sandboxes/javaHelloWorld/dev/log'.
Jan 8 21:18:19 swi-mdm9x15 user.info Legato: INFO | supervisor[560]/supervisor T=main | sandbox.c ImportFile() 693 | Imported file '/dev/null' into sandbox '/tmp/legato/sandboxes/javaHelloWorld/dev/null'.
Jan 8 21:18:19 swi-mdm9x15 user.info Legato: INFO | supervisor[560]/supervisor T=main | sandbox.c ImportFile() 693 | Imported file '/dev/zero' into sandbox '/tmp/legato/sandboxes/javaHelloWorld/dev/zero'.
Jan 8 21:18:19 swi-mdm9x15 user.info Legato: INFO | supervisor[560]/supervisor T=main | sandbox.c ImportDir() 740 | Imported directory '/legato/systems/current/apps/javaHelloWorld/read-only/lib' into sandbox '/tmp/legato/sandboxes/javaHelloWorld/lib'.
Jan 8 21:18:19 swi-mdm9x15 user.info Legato: INFO | supervisor[560]/supervisor T=main | sandbox.c ImportDir() 740 | Imported directory '/legato/systems/current/apps/javaHelloWorld/read-only/lib' into sandbox '/tmp/legato/sandboxes/javaHelloWorld/lib'.
Jan 8 21:18:19 swi-mdm9x15 user.info Legato: INFO | supervisor[560]/supervisor T=main | sandbox.c ImportFile() 693 | Imported file '/lib/ld-linux.so.3' into sandbox '/tmp/legato/sandboxes/javaHelloWorld/lib/ld-linux.so.3'.
Jan 8 21:18:19 swi-mdm9x15 user.err Legato: =ERR= | supervisor[560]/supervisor T=main | sandbox.c ImportFile() 689 | Couldn't import '/legato/systems/current/lib/legato.jar' into sandbox at '/tmp/legato/sandboxes/javaHelloWorld/lib/legato.jar'. No such file or directory
Jan 8 21:18:19 swi-mdm9x15 user.info Legato: INFO | supervisor[560]/supervisor T=main | sandbox.c sandbox_Remove() 1450 | 'javaHelloWorld' sandbox removed.
Jan 8 21:18:19 swi-mdm9x15 user.err Legato: =ERR= | supervisor[560]/supervisor T=main | app.c app_Start() 917 | Could not create sandbox for application 'javaHelloWorld'. This application cannot be started.
The relevant line in from the above logread printout:
Jan 8 21:18:19 swi-mdm9x15 user.err Legato: =ERR= | supervisor[560]/supervisor T=main | sandbox.c ImportFile() 689 | Couldn't import '/legato/systems/current/lib/legato.jar' into sandbox at '/tmp/legato/sandboxes/javaHelloWorld/lib/legato.jar'. No such file or directoryLegato seems to be looking for a jar file ( /legato/systems/current/lib/legato.jar ) on the mangOH that isn’t there. There is a file called legato.jar in the ubuntu VM that came with legato. It’s saved under
/home/legato/legato/packages/legato.framework.16.4.0.I201606090927/resources/legato/build/wp85/framework/lib/legato.jar . So I figured I would put this on the mangOH /legato/systems/current/lib/.
But that path is a “Read-only file system” apparently.
Has anyone else had this problem?
Is it possible to tell the mkapp command to look for the legato.jar in other places?