[6.0] d74a55e1f Align code with with zlib 1.2.11.
Dridi Boukelmoune
dridi.boukelmoune at gmail.com
Tue Oct 17 21:28:09 UTC 2023
commit d74a55e1f27c10e5255369f76a24cdadc2249015
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date: Thu Feb 25 09:24:22 2021 +0000
Align code with with zlib 1.2.11.
FreeBSD's code is undergoing some compatibility adaptations
so we go directly to the source from here.
PS: Please keep cochinelle out of libvgz.
diff --git a/lib/libvgz/deflate.c b/lib/libvgz/deflate.c
index 2a2544783..e4493c125 100644
--- a/lib/libvgz/deflate.c
+++ b/lib/libvgz/deflate.c
@@ -511,7 +511,7 @@ int ZEXPORT deflateResetKeep (strm)
s->wrap == 2 ? crc32(0L, Z_NULL, 0) :
#endif
adler32(0L, Z_NULL, 0);
- s->last_flush = -2;
+ s->last_flush = Z_NO_FLUSH;
_tr_init(s);
@@ -606,12 +606,12 @@ int ZEXPORT deflateParams(strm, level, strategy)
func = configuration_table[s->level].func;
if ((strategy != s->strategy || func != configuration_table[level].func) &&
- s->last_flush != -2) {
+ s->high_water) {
/* Flush the last buffer: */
int err = deflate(strm, Z_BLOCK);
if (err == Z_STREAM_ERROR)
return err;
- if (strm->avail_in || (s->strstart - s->block_start) + s->lookahead)
+ if (strm->avail_out == 0)
return Z_BUF_ERROR;
}
if (s->level != level) {
diff --git a/lib/libvgz/vgz.h b/lib/libvgz/vgz.h
index 1bb81009d..342a0fba5 100644
--- a/lib/libvgz/vgz.h
+++ b/lib/libvgz/vgz.h
@@ -717,12 +717,11 @@ ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
used to switch between compression and straight copy of the input data, or
to switch to a different kind of input data requiring a different strategy.
If the compression approach (which is a function of the level) or the
- strategy is changed, and if there have been any deflate() calls since the
- state was initialized or reset, then the input available so far is
- compressed with the old level and strategy using deflate(strm, Z_BLOCK).
- There are three approaches for the compression levels 0, 1..3, and 4..9
- respectively. The new level and strategy will take effect at the next call
- of deflate().
+ strategy is changed, and if any input has been consumed in a previous
+ deflate() call, then the input available so far is compressed with the old
+ level and strategy using deflate(strm, Z_BLOCK). There are three approaches
+ for the compression levels 0, 1..3, and 4..9 respectively. The new level
+ and strategy will take effect at the next call of deflate().
If a deflate(strm, Z_BLOCK) is performed by deflateParams(), and it does
not have enough output space to complete, then the parameter change will not
diff --git a/lib/libvgz/zconf.h b/lib/libvgz/zconf.h
index 1afeed62a..21f3eada7 100644
--- a/lib/libvgz/zconf.h
+++ b/lib/libvgz/zconf.h
@@ -3,7 +3,7 @@
* For conditions of distribution and use, see copyright notice in zlib.h
*/
-/* @(#) $FreeBSD: head/contrib/zlib/zconf.h 311285 2017-01-04 16:09:08Z delphij $ */
+/* @(#) $Id$ */
#ifndef ZCONF_H
#define ZCONF_H
@@ -431,7 +431,7 @@ typedef uLong FAR uLongf;
typedef unsigned long z_crc_t;
#endif
-#if 0 /* was set to #if 0 by ./configure */
+#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */
# define Z_HAVE_UNISTD_H
#endif
@@ -500,15 +500,8 @@ typedef uLong FAR uLongf;
# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
#endif
-/*
- * This is hard-configured for FreeBSD.
- */
-#define z_off_t off_t
-#ifndef _FILE_OFFSET_BITS
-#define _FILE_OFFSET_BITS 64
-#endif
-
#ifndef z_off_t
+# error "z_off_t missing"
# define z_off_t long
#endif
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