Mainly zlib code remains unchanged for the sake of further maintenance.
Only minor adjustments of zlib deflate parts for build purposes:
- Make is_dfltcc_enabled() always return true
- Define CONFIG_ZLIB_DFLTCC in zlib.h to build zlib code with DFLTCC support
- Remove inflate related prototypes from zlib.h
- Adjust oesc_msg() to use snprintf from libc.h
- Remove BUG_ON from zlib_deflate_workspacesize()
- Replace bitrev32() with bi_reverse() from defutil.h
- Include <assert.h> to dfltcc.h header because of static_assert() calls
- Fix other include statements
- Adjust the text in zipl.h following Zlib License requirements
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
Add required zlib_deflate parts based on kernel zlib code in preparation
to DASD dumper DFLTCC deflate exploitation. Omit inflate modules in
order to minimize the dumper size (no decompression is required for the
dumping).
Adjust include statements leaving other code as is.
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
