This patch resolves a problem with running 'noux_gdb.run'. Right at the
start, GDB would output a message like:
...cli-script.c:1614: internal-error: called with NULL file pointer!
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n)
The LOG output hints at the cause of the problem:
[init -> noux -> /bin/genode-x86-gdb] fcntl: F_GETFL for libc_fd=3
Thanks to cproc for the fix!
When opening a new file, a new Fs_vfs_handle is created but with the
initial mode set to 0 which is not expected by functions like fdopen()
that check if the original flags given to the open() call match the
returned ones on the used fd.
Fixes#289.
In 'Fs_file_system::open()' the call of '_fs.dir()' can throw a
'File_system::Lookup_failed' exception, which gets explicitly caught
with this patch.
Fixes#246.
This patch introduces support for stacked file systems alongside new
glue for accessing file-system implementations provided via Genode's
new file-system-session interface.
Using stacked file systems, an arbitrary number of file systems (such
as tar archives or file systems implemented as separate Genode
components) can be composed to form one merged virtual file system.
An example is given via the 'ports/run/noux_bash.run' script. This run
script creates a virtual file system out of multiple tar archives each
containing the content of a particular GNU package. In addition, one
'ram_fs' is mounted, which enables Noux to perform write operations.
This way, the shell output can be redirected to a file, or files can
be saved in VIM.
Fixes#103.
