Genode 17.05 dde_rump ISO filesystem

[Steven Harp]

Hi:
  While evaluating file system alternatives, I ran some tests
of the dde_rump file system code (Genode 17.05 master/HEAD
on Ubuntu 16.04 / x86_64).

The EXT2 and FAT file system tests work as expected (although the
latter benefited from a <default caps="256">).

The ISO file system however left me a puzzle (trace below; default
caps line added to run file.) The same results appear under builds
x86_{32,64} x KERNEL={linux,nova}.

Any ideas regarding what might be going wrong?  The prepared test
image fs.iso appears to have the intended file "test.txt" on it.

Best,
  Steve

> 
> make run/rump_iso
> ...
> [init] child "rom_blk" announces service "Block"
> [init] child "timer" announces service "Timer"
> [init -> rom_blk] Using file=fs.iso as device with block size 2048.
> [init -> rump_fs] Using cd9660 as file system
> [init -> rump_fs] RUMP ver: 17
> [init -> rump_fs] RUMP_THREADS
> [init -> rump_fs] RUMP_VERBOSE
> [init -> rump_fs] _RUMPUSER_NCPU
> [init -> rump_fs] RUMP_MEMLIMIT
> [init -> rump_fs] asserting rump kernel 4064 KB of RAM
> [init -> rump_fs] BOOTSTRAP
> [init -> rump_fs] RUMP_NVNODES
> [init -> rump_fs] RUMP_BLKFAIL
> [init -> rump_fs] RUMP_BLKSECTSHIFT
> [init -> rump_fs] RUMP_MODULEBASE
> [init -> rump_fs] _RUMPUSER_HOSTNAME
> [init] child "rump_fs" announces service "File_system"
> [init] child "fs_rom" announces service "ROM"
> [init -> fs_rom] request for test-iso
> [init -> fs_rom] Error: /test-iso: lookup_failed
> [init -> fs_rom] request for ld.lib.so
> [init -> fs_rom] Error: /ld.lib.so: lookup_failed
> [init -> fs_rom] Error: /ld.lib.so: lookup_failed
> [init -> fs_rom] Error: /ld.lib.so: lookup_failed
> [init -> fs_rom] Error: /test-iso: lookup_failed
> [init -> fs_rom] Error: /test-iso: lookup_failed
> ...
> (timeout)