Added UTCB functions for full ipc that copy buffer or string payloads
in secondary message registers.
Some posix syscalls now use these utcb functions to copy pathnames.
test0 now successfully runs its beginning.
test0 SConscript has a dependency problem.
Issues to be investigated:
- vm_file and vnodes need to be merged fully in all functions.
- libposix shared page references need to be removed.
- Any references to VFS_TID, PAGER_TID need to be removed.
Changes:
It is now possible to use do_mmap() from within mm0.
- pager_new_virtual()/delete_virtual() return addresses that are
disjoint from find_unmapped_area() used by mmap() interface for
anonymous or not-fixed areas.
- find_unmapped_area() now uses task->map_start task->map_end instead
of task->start and task->end. task->start/end are still valid task
space addresses for mmap(), but finding a new address is limited to
map_start/map_end.
- We have both interfaces because mmap() is only useful for backed-files.
When the pager needs to access a user memory range for example, that is
not backed by a file and thus we need to use pager_new_virtual() instead
of mmap() for mapping.
Now worked around.
CML2 seems to forget supressing derived symbols that are derived from
suppressed symbols. (Expected behaviour) This caused the configuration parser
to recognize the illegally visible symbols to be from those containers.
Now worked around by adding the extra check for CONFIG_CONTAINERS have been parsed.
A real solution requires fixing CML2 symbol visibility function.
It might be a good idea to simply use mmap() from inside the pager and prefault it
as a conventional way of mapping internal buffers. Will be investigated.
- This would open the way that all internal buffer mapping is
done in a standard way
- Standard syscalls would be possible to use from within the pager.
CML boolean type compiles into #define and #undefs.
This is not useful for capabilities since a value of 0 or 1 can be
used automatically for setting or unsetting bits in permission words.
Meanwhile using an integer type with 0 - 1 range has a worse usability
experience than the boolean Y, N.
Also moved parsing of container.template.cml to newer Python argument
parsing format.
Now, bare containers get their files from conts/bare_src instead of conts/test.
test directory will be used for the next generation test programs.
Also bare_src is tracked by git now with a minor mod to .gitignore.
container packer picks up files with .elf extentions. Therefore intermediate
files must not have .elf extentions, since they're not meant to go to the final
executable.
modified: conts/posix/bootdesc/SConscript
modified: conts/posix/libposix/stat.c
A lot of hassles on standard c library, mock-up libc, and libposix
headers taken from uClibc clashing has been worked around.
Next:
- Linker scripts need fixing and adjusting.
- Bootdesc needs to be generated.
- Per-container compilation scripts need connecting.
This parameter does not significantly pose a restriction on configuration.
It can be adjusted depending on phys_offset. Therefore we don't maintain it.
