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* src/imfs/imfs.h, src/imfs/imfs_creat.c, src/imfs/imfs_debug.c,
src/imfs/imfs_eval.c, src/imfs/imfs_fchmod.c,
src/imfs/imfs_handlers_memfile.c, src/imfs/imfs_init.c,
src/imfs/imfs_initsupp.c, src/imfs/imfs_stat.c, src/imfs/memfile.c,
src/imfs/miniimfs_init.c: Final developmental update to "tarfs".
When rtems_tarfs_load() is called, it checks the permissions
on each file. If there is write permission, it just creates a
standard file using "creat()" and therefore, uses the IMFS MEMORY_FILE.
If there is no write permission, it creates a LINEAR_FILE node
with the appropriate properties. If the permission is ever changed
to writeable, IMFS_fchmod converts it to a regular memory file.
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* src/imfs/linearfile.c, src/imfs/imfs_load_tar.c: New files.
* src/imfs/Makefile.am, src/imfs/imfs.h,
src/imfs/imfs_creat.c, src/imfs/imfs_debug.c,
src/imfs/imfs_eval.c, src/imfs/imfs_handlers_memfile.c,
src/imfs/imfs_init.c, src/imfs/imfs_initsupp.c,
src/imfs/imfs_stat.c, src/imfs/miniimfs_init.c: Added "tarfs".
This is not really a tar filesystem. It is a way to load a tar
image into the IMFS but actually leave bulky file contents in the
original tar image. It essentially adds the linear file type and
associated support and a loader routine.
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