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lib/zlib: fix DFLTCC not flushing EOBS when creating raw streams

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This commit is based on:
  https://github.com/zlib-ng/zlib-ng/commit/ca99a88

Link: https://lkml.kernel.org/r/20230126131428.1222214-4-zaslonko@linux.ibm.com
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Mikhail Zaslonko
2023-01-26 14:14:23 +01:00
committed by Andrew Morton
parent 9a54933826
commit 195c5ad9d1
1 changed files with 13 additions and 6 deletions
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19
lib/zlib_deflate/deflate.c
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@@ -451,17 +451,24 @@ int zlib_deflate(
Assert(strm->avail_out > 0, "bug2");
if (flush != Z_FINISH) return Z_OK;
if (s->noheader) return Z_STREAM_END;
/* Write the zlib trailer (adler32) */
putShortMSB(s, (uInt)(strm->adler >> 16));
putShortMSB(s, (uInt)(strm->adler & 0xffff));
if (!s->noheader) {
/* Write zlib trailer (adler32) */
putShortMSB(s, (uInt)(strm->adler >> 16));
putShortMSB(s, (uInt)(strm->adler & 0xffff));
}
flush_pending(strm);
/* If avail_out is zero, the application will call deflate again
* to flush the rest.
*/
s->noheader = -1; /* write the trailer only once! */
return s->pending != 0 ? Z_OK : Z_STREAM_END;
if (!s->noheader) {
s->noheader = -1; /* write the trailer only once! */
}
if (s->pending == 0) {
Assert(s->bi_valid == 0, "bi_buf not flushed");
return Z_STREAM_END;
}
return Z_OK;
}
/* ========================================================================= */