svn commit: r350496 - in head/sys: cddl/contrib/opensolaris/uts/common/fs/zfs cddl/contrib/opensolaris/uts/common/zmod conf contrib/zlib dev/zlib libkern modules/crypto modules/zfs modules/zlib ope...
Xin LI
delphij at FreeBSD.org
Thu Aug 1 06:35:36 UTC 2019
Author: delphij
Date: Thu Aug 1 06:35:33 2019
New Revision: 350496
URL: https://svnweb.freebsd.org/changeset/base/350496
Log:
Allow Kernel to link in both legacy libkern/zlib and new sys/contrib/zlib,
with an eventual goal to convert all legacl zlib callers to the new zlib
version:
* Move generic zlib shims that are not specific to zlib 1.0.4 to
sys/dev/zlib.
* Connect new zlib (1.2.11) to the zlib kernel module, currently built
with Z_SOLO.
* Prefix the legacy zlib (1.0.4) with 'zlib104_' namespace.
* Convert sys/opencrypto/cryptodeflate.c to use new zlib.
* Remove bundled zlib 1.2.3 from ZFS and adapt it to new zlib and make
it depend on the zlib module.
* Fix Z_SOLO build of new zlib.
PR: 229763
Submitted by: Yoshihiro Ota <ota j email ne jp>
Reviewed by: markm (sys/dev/zlib/zlib_kmod.c)
Relnotes: yes
Differential Revision: https://reviews.freebsd.org/D19706
Added:
head/sys/dev/zlib/
head/sys/dev/zlib/zcalloc.c (contents, props changed)
head/sys/dev/zlib/zcalloc.h (contents, props changed)
head/sys/dev/zlib/zlib_mod.c
- copied, changed from r350463, head/sys/libkern/zlib.c
Deleted:
head/sys/cddl/contrib/opensolaris/uts/common/zmod/adler32.c
head/sys/cddl/contrib/opensolaris/uts/common/zmod/crc32.h
head/sys/cddl/contrib/opensolaris/uts/common/zmod/deflate.c
head/sys/cddl/contrib/opensolaris/uts/common/zmod/deflate.h
head/sys/cddl/contrib/opensolaris/uts/common/zmod/inffast.c
head/sys/cddl/contrib/opensolaris/uts/common/zmod/inffast.h
head/sys/cddl/contrib/opensolaris/uts/common/zmod/inffixed.h
head/sys/cddl/contrib/opensolaris/uts/common/zmod/inflate.c
head/sys/cddl/contrib/opensolaris/uts/common/zmod/inflate.h
head/sys/cddl/contrib/opensolaris/uts/common/zmod/inftrees.c
head/sys/cddl/contrib/opensolaris/uts/common/zmod/inftrees.h
head/sys/cddl/contrib/opensolaris/uts/common/zmod/opensolaris_crc32.c
head/sys/cddl/contrib/opensolaris/uts/common/zmod/trees.c
head/sys/cddl/contrib/opensolaris/uts/common/zmod/zconf.h
head/sys/cddl/contrib/opensolaris/uts/common/zmod/zlib.h
head/sys/cddl/contrib/opensolaris/uts/common/zmod/zmod_subr.c
head/sys/cddl/contrib/opensolaris/uts/common/zmod/zutil.c
head/sys/cddl/contrib/opensolaris/uts/common/zmod/zutil.h
Modified:
head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c
head/sys/cddl/contrib/opensolaris/uts/common/zmod/zmod.c
head/sys/conf/NOTES
head/sys/conf/files
head/sys/conf/kern.pre.mk
head/sys/conf/kmod.mk
head/sys/contrib/zlib/deflate.c
head/sys/contrib/zlib/zconf.h
head/sys/contrib/zlib/zutil.h
head/sys/libkern/zlib.c
head/sys/modules/crypto/Makefile
head/sys/modules/zfs/Makefile
head/sys/modules/zlib/Makefile
head/sys/opencrypto/cryptodeflate.c
head/sys/opencrypto/deflate.h
head/sys/sys/zlib.h
Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Thu Aug 1 05:30:31 2019 (r350495)
+++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Thu Aug 1 06:35:33 2019 (r350496)
@@ -7172,3 +7172,4 @@ MODULE_VERSION(zfsctrl, 1);
MODULE_DEPEND(zfsctrl, opensolaris, 1, 1, 1);
MODULE_DEPEND(zfsctrl, krpc, 1, 1, 1);
MODULE_DEPEND(zfsctrl, acl_nfs4, 1, 1, 1);
+MODULE_DEPEND(zfsctrl, zlib, 1, 1, 1);
Modified: head/sys/cddl/contrib/opensolaris/uts/common/zmod/zmod.c
==============================================================================
--- head/sys/cddl/contrib/opensolaris/uts/common/zmod/zmod.c Thu Aug 1 05:30:31 2019 (r350495)
+++ head/sys/cddl/contrib/opensolaris/uts/common/zmod/zmod.c Thu Aug 1 06:35:33 2019 (r350496)
@@ -25,11 +25,49 @@
*/
#include <sys/types.h>
+#include <sys/cmn_err.h>
+#include <sys/systm.h>
+#include <sys/kobj.h>
#include <sys/zmod.h>
-#include "zlib.h"
-#include "zutil.h"
+#include <contrib/zlib/zlib.h>
+#include <contrib/zlib/zutil.h>
+struct zchdr {
+ uint_t zch_magic;
+ uint_t zch_size;
+};
+
+#define ZCH_MAGIC 0x3cc13cc1
+
+/*ARGSUSED*/
+static void *
+zfs_zcalloc(void *opaque, uint_t items, uint_t size)
+{
+ size_t nbytes = sizeof (struct zchdr) + items * size;
+ struct zchdr *z = kobj_zalloc(nbytes, KM_NOWAIT|KM_TMP);
+
+ if (z == NULL)
+ return (NULL);
+
+ z->zch_magic = ZCH_MAGIC;
+ z->zch_size = nbytes;
+
+ return (z + 1);
+}
+
+/*ARGSUSED*/
+static void
+zfs_zcfree(void *opaque, void *ptr)
+{
+ struct zchdr *z = ((struct zchdr *)ptr) - 1;
+
+ if (z->zch_magic != ZCH_MAGIC)
+ panic("zcfree region corrupt: hdr=%p ptr=%p", (void *)z, ptr);
+
+ kobj_free(z, z->zch_size);
+}
+
/*
* Uncompress the buffer 'src' into the buffer 'dst'. The caller must store
* the expected decompressed data size externally so it can be passed in.
@@ -47,6 +85,8 @@ z_uncompress(void *dst, size_t *dstlen, const void *sr
zs.avail_in = srclen;
zs.next_out = dst;
zs.avail_out = *dstlen;
+ zs.zalloc = zfs_zcalloc;
+ zs.zfree = zfs_zcfree;
/*
* Call inflateInit2() specifying a window size of DEF_WBITS
@@ -78,6 +118,8 @@ z_compress_level(void *dst, size_t *dstlen, const void
zs.avail_in = srclen;
zs.next_out = dst;
zs.avail_out = *dstlen;
+ zs.zalloc = zfs_zcalloc;
+ zs.zfree = zfs_zcfree;
if ((err = deflateInit(&zs, level)) != Z_OK)
return (err);
Modified: head/sys/conf/NOTES
==============================================================================
--- head/sys/conf/NOTES Thu Aug 1 05:30:31 2019 (r350495)
+++ head/sys/conf/NOTES Thu Aug 1 06:35:33 2019 (r350496)
@@ -2981,4 +2981,6 @@ device spigen # Generic access to SPI devices from u
# Enable legacy /dev/spigenN name aliases for /dev/spigenX.Y devices.
options SPIGEN_LEGACY_CDEVNAME # legacy device names for spigen
+# Compression supports.
+device zlib # gzip/zlib compression/decompression library
device xz # xz_embedded LZMA de-compression library
Modified: head/sys/conf/files
==============================================================================
--- head/sys/conf/files Thu Aug 1 05:30:31 2019 (r350495)
+++ head/sys/conf/files Thu Aug 1 06:35:33 2019 (r350496)
@@ -273,16 +273,7 @@ cddl/contrib/opensolaris/uts/common/os/callb.c opti
cddl/contrib/opensolaris/uts/common/os/fm.c optional zfs compile-with "${ZFS_C}"
cddl/contrib/opensolaris/uts/common/os/list.c optional zfs compile-with "${ZFS_C}"
cddl/contrib/opensolaris/uts/common/os/nvpair_alloc_system.c optional zfs compile-with "${ZFS_C}"
-cddl/contrib/opensolaris/uts/common/zmod/adler32.c optional zfs compile-with "${ZFS_C}"
-cddl/contrib/opensolaris/uts/common/zmod/deflate.c optional zfs compile-with "${ZFS_C}"
-cddl/contrib/opensolaris/uts/common/zmod/inffast.c optional zfs compile-with "${ZFS_C}"
-cddl/contrib/opensolaris/uts/common/zmod/inflate.c optional zfs compile-with "${ZFS_C}"
-cddl/contrib/opensolaris/uts/common/zmod/inftrees.c optional zfs compile-with "${ZFS_C}"
-cddl/contrib/opensolaris/uts/common/zmod/opensolaris_crc32.c optional zfs compile-with "${ZFS_C}"
-cddl/contrib/opensolaris/uts/common/zmod/trees.c optional zfs compile-with "${ZFS_C}"
-cddl/contrib/opensolaris/uts/common/zmod/zmod.c optional zfs compile-with "${ZFS_C}"
-cddl/contrib/opensolaris/uts/common/zmod/zmod_subr.c optional zfs compile-with "${ZFS_C}"
-cddl/contrib/opensolaris/uts/common/zmod/zutil.c optional zfs compile-with "${ZFS_C}"
+cddl/contrib/opensolaris/uts/common/zmod/zmod.c optional zfs compile-with "${ZFS_C} ${ZLIB_CFLAGS}"
# zfs lua support
cddl/contrib/opensolaris/uts/common/fs/zfs/lua/lapi.c optional zfs compile-with "${ZFS_C}"
cddl/contrib/opensolaris/uts/common/fs/zfs/lua/lauxlib.c optional zfs compile-with "${ZFS_C}"
@@ -4005,6 +3996,36 @@ libkern/strvalid.c standard
libkern/timingsafe_bcmp.c standard
libkern/zlib.c optional crypto | geom_uzip | ipsec | \
ipsec_support | mxge | netgraph_deflate | ddb_ctf | gzio
+contrib/zlib/adler32.c optional crypto | geom_uzip | ipsec | \
+ ipsec_support | mxge | ddb_ctf | gzio | zfs | zlib \
+ compile-with "${ZLIB_C}"
+contrib/zlib/crc32.c optional crypto | geom_uzip | ipsec | \
+ ipsec_support | mxge | ddb_ctf | gzio | zfs | zlib \
+ compile-with "${ZLIB_C} -Wno-cast-qual"
+contrib/zlib/deflate.c optional crypto | geom_uzip | ipsec | \
+ ipsec_support | mxge | ddb_ctf | gzio | zfs | zlib \
+ compile-with "${ZLIB_C} -Wno-cast-qual"
+contrib/zlib/inffast.c optional crypto | geom_uzip | ipsec | \
+ ipsec_support | mxge | ddb_ctf | gzio | zfs | zlib \
+ compile-with "${ZLIB_C}"
+contrib/zlib/inflate.c optional crypto | geom_uzip | ipsec | \
+ ipsec_support | mxge | ddb_ctf | gzio | zfs | zlib \
+ compile-with "${ZLIB_C}"
+contrib/zlib/inftrees.c optional crypto | geom_uzip | ipsec | \
+ ipsec_support | mxge | ddb_ctf | gzio | zfs | zlib \
+ compile-with "${ZLIB_C}"
+contrib/zlib/trees.c optional crypto | geom_uzip | ipsec | \
+ ipsec_support | mxge | ddb_ctf | gzio | zfs | zlib \
+ compile-with "${ZLIB_C}"
+contrib/zlib/zutil.c optional crypto | geom_uzip | ipsec | \
+ ipsec_support | mxge | ddb_ctf | gzio | zfs | zlib \
+ compile-with "${ZLIB_C}"
+dev/zlib/zlib_mod.c optional crypto | geom_uzip | ipsec | \
+ ipsec_support | mxge | ddb_ctf | gzio | zfs | zlib \
+ compile-with "${ZLIB_C}"
+dev/zlib/zcalloc.c optional crypto | geom_uzip | ipsec | \
+ ipsec_support | mxge | ddb_ctf | gzio | zfs | zlib \
+ compile-with "${ZLIB_C}"
net/altq/altq_cbq.c optional altq
net/altq/altq_codel.c optional altq
net/altq/altq_hfsc.c optional altq
@@ -4756,7 +4777,8 @@ opencrypto/crypto.c optional crypto | ipsec | ipsec_s
opencrypto/cryptodev.c optional cryptodev
opencrypto/cryptodev_if.m optional crypto | ipsec | ipsec_support
opencrypto/cryptosoft.c optional crypto | ipsec | ipsec_support
-opencrypto/cryptodeflate.c optional crypto | ipsec | ipsec_support
+opencrypto/cryptodeflate.c optional crypto | ipsec | ipsec_support \
+ compile-with "${ZLIB_C}"
opencrypto/gmac.c optional crypto | ipsec | ipsec_support
opencrypto/gfmult.c optional crypto | ipsec | ipsec_support
opencrypto/rmd160.c optional crypto | ipsec | ipsec_support
Modified: head/sys/conf/kern.pre.mk
==============================================================================
--- head/sys/conf/kern.pre.mk Thu Aug 1 05:30:31 2019 (r350495)
+++ head/sys/conf/kern.pre.mk Thu Aug 1 06:35:33 2019 (r350496)
@@ -173,6 +173,10 @@ NORMAL_FW= uudecode -o ${.TARGET} ${.ALLSRC}
NORMAL_FWO= ${LD} -b binary --no-warn-mismatch -d -warn-common -r \
-m ${LD_EMULATION} -o ${.TARGET} ${.ALLSRC:M*.fw}
+# for zlib in the kernel
+ZLIB_CFLAGS+= -DZ_SOLO
+ZLIB_C= ${CC} -c ${ZLIB_CFLAGS} ${CFLAGS} ${.IMPSRC}
+
# for ZSTD in the kernel (include zstd/lib/freebsd before other CFLAGS)
ZSTD_C= ${CC} -c -DZSTD_HEAPMODE=1 -I$S/contrib/zstd/lib/freebsd ${CFLAGS} -I$S/contrib/zstd/lib -I$S/contrib/zstd/lib/common ${WERROR} -Wno-inline -Wno-missing-prototypes ${PROF} -U__BMI__ ${.IMPSRC}
Modified: head/sys/conf/kmod.mk
==============================================================================
--- head/sys/conf/kmod.mk Thu Aug 1 05:30:31 2019 (r350495)
+++ head/sys/conf/kmod.mk Thu Aug 1 06:35:33 2019 (r350496)
@@ -104,6 +104,8 @@ __KLD_SHARED=yes
__KLD_SHARED=no
.endif
+ZLIB_CFLAGS+= -DZ_SOLO
+
.if !empty(CFLAGS:M-O[23s]) && empty(CFLAGS:M-fno-strict-aliasing)
CFLAGS+= -fno-strict-aliasing
.endif
Modified: head/sys/contrib/zlib/deflate.c
==============================================================================
--- head/sys/contrib/zlib/deflate.c Thu Aug 1 05:30:31 2019 (r350495)
+++ head/sys/contrib/zlib/deflate.c Thu Aug 1 06:35:33 2019 (r350496)
@@ -189,9 +189,10 @@ local const config configuration_table[10] = {
* Initialize the hash table (avoiding 64K overflow for 16 bit systems).
* prev[] will be initialized on the fly.
*/
-#define CLEAR_HASH(s) \
+#define CLEAR_HASH(s) do { \
s->head[s->hash_size-1] = NIL; \
- zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head));
+ zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head)); \
+ } while (0)
/* ===========================================================================
* Slide the hash table when sliding the window down (could be avoided with 32
@@ -1622,8 +1623,10 @@ local void fill_window(s)
/* Maximum stored block length in deflate format (not including header). */
#define MAX_STORED 65535
+#if !defined(MIN)
/* Minimum of a and b. */
#define MIN(a, b) ((a) > (b) ? (b) : (a))
+#endif
/* ===========================================================================
* Copy without compression as much as possible from the input stream, return
Modified: head/sys/contrib/zlib/zconf.h
==============================================================================
--- head/sys/contrib/zlib/zconf.h Thu Aug 1 05:30:31 2019 (r350495)
+++ head/sys/contrib/zlib/zconf.h Thu Aug 1 06:35:33 2019 (r350496)
@@ -503,6 +503,9 @@ typedef uLong FAR uLongf;
/*
* This is hard-configured for FreeBSD.
*/
+#ifdef Z_SOLO
+# include <sys/types.h> /* for off_t */
+#endif
#define z_off_t off_t
#ifndef _FILE_OFFSET_BITS
#define _FILE_OFFSET_BITS 64
Modified: head/sys/contrib/zlib/zutil.h
==============================================================================
--- head/sys/contrib/zlib/zutil.h Thu Aug 1 05:30:31 2019 (r350495)
+++ head/sys/contrib/zlib/zutil.h Thu Aug 1 06:35:33 2019 (r350496)
@@ -30,7 +30,10 @@
#endif
#ifdef Z_SOLO
+#ifndef _PTRDIFF_T_DECLARED
typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */
+#define _PTRDIFF_T_DECLARED
+#endif
#endif
#ifndef local
Added: head/sys/dev/zlib/zcalloc.c
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/zlib/zcalloc.c Thu Aug 1 06:35:33 2019 (r350496)
@@ -0,0 +1,32 @@
+/*
+ * This file is in the public domain.
+ * $FreeBSD$
+ */
+
+#include <sys/param.h>
+#include <dev/zlib/zcalloc.h>
+#include <sys/kernel.h>
+#include <sys/malloc.h>
+
+MALLOC_DEFINE(M_ZLIB, "zlib", "ZLIB Compressor");
+
+void *
+zcalloc_waitok(void *nil, u_int items, u_int size)
+{
+
+ return mallocarray(items, size, M_ZLIB, M_WAITOK);
+}
+
+void *
+zcalloc_nowait(void *nil, u_int items, u_int size)
+{
+
+ return mallocarray(items, size, M_ZLIB, M_NOWAIT);
+}
+
+void
+zcfree(void *nil, void *ptr)
+{
+
+ free(ptr, M_ZLIB);
+}
Added: head/sys/dev/zlib/zcalloc.h
==============================================================================
--- /dev/null 00:00:00 1970 (empty, because file is newly added)
+++ head/sys/dev/zlib/zcalloc.h Thu Aug 1 06:35:33 2019 (r350496)
@@ -0,0 +1,13 @@
+/*
+ * This file is in the public domain.
+ * $FreeBSD$
+ */
+
+#ifndef _DEV_ZLIB_ZCALLOC_
+#define _DEV_ZLIB_ZCALLOC_
+
+void * zcalloc_waitok(void *nil, u_int items, u_int size);
+void * zcalloc_nowait(void *nil, u_int items, u_int size);
+void zcfree(void *nil, void *ptr);
+
+#endif
Copied and modified: head/sys/dev/zlib/zlib_mod.c (from r350463, head/sys/libkern/zlib.c)
==============================================================================
--- head/sys/libkern/zlib.c Wed Jul 31 05:38:39 2019 (r350463, copy source)
+++ head/sys/dev/zlib/zlib_mod.c Thu Aug 1 06:35:33 2019 (r350496)
@@ -1,5397 +1,37 @@
-/*
- * This file is derived from various .h and .c files from the zlib-1.0.4
- * distribution by Jean-loup Gailly and Mark Adler, with some additions
- * by Paul Mackerras to aid in implementing Deflate compression and
- * decompression for PPP packets. See zlib.h for conditions of
- * distribution and use.
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
*
- * Changes that have been made include:
- * - added Z_PACKET_FLUSH (see zlib.h for details)
- * - added inflateIncomp and deflateOutputPending
- * - allow strm->next_out to be NULL, meaning discard the output
+ * Copyright (c) 2019 The FreeBSD Foundation
*
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
* $FreeBSD$
*/
-/*
- * ==FILEVERSION 971210==
- *
- * This marker is used by the Linux installation script to determine
- * whether an up-to-date version of this file is already installed.
- */
-
-#define NO_DUMMY_DECL
-#define NO_ZCFUNCS
-#define MY_ZCALLOC
-
-#if defined(__FreeBSD__) && defined(_KERNEL)
-#define _tr_init _zlib104_tr_init
-#define _tr_align _zlib104_tr_align
-#define _tr_tally _zlib104_tr_tally
-#define _tr_flush_block _zlib104_tr_flush_block
-#define _tr_stored_block _zlib104_tr_stored_block
-#define inflate_fast _zlib104_inflate_fast
-#define inflate _zlib104_inflate
-#define zlibVersion _zlib104_Version
-#endif
-
-
-/* +++ zutil.h */
-/*-
- * zutil.h -- internal interface and configuration of the compression library
- * Copyright (C) 1995-1996 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* From: zutil.h,v 1.16 1996/07/24 13:41:13 me Exp $ */
-
-#ifndef _Z_UTIL_H
-#define _Z_UTIL_H
-
-#ifdef _KERNEL
-#include <sys/zlib.h>
-#else
-#include "zlib.h"
-#endif
-
-#ifdef _KERNEL
-/* Assume this is a *BSD or SVR4 kernel */
-#include <sys/types.h>
-#include <sys/time.h>
-#include <sys/systm.h>
#include <sys/param.h>
+#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/module.h>
-# define HAVE_MEMCPY
-#else
-#if defined(__KERNEL__)
-/* Assume this is a Linux kernel */
-#include <linux/string.h>
-#define HAVE_MEMCPY
-
-#else /* not kernel */
-
-#if defined(MSDOS)||defined(VMS)||defined(CRAY)||defined(WIN32)||defined(RISCOS)
-# include <stddef.h>
-# include <errno.h>
-#else
- extern int errno;
-#endif
-#ifdef STDC
-# include <string.h>
-# include <stdlib.h>
-#endif
-#endif /* __KERNEL__ */
-#endif /* _KERNEL */
-
-#ifndef local
-# define local static
-#endif
-/* compile with -Dlocal if your debugger can't find static symbols */
-
-typedef unsigned char uch;
-typedef uch FAR uchf;
-typedef unsigned short ush;
-typedef ush FAR ushf;
-typedef unsigned long ulg;
-
-static const char *z_errmsg[10]; /* indexed by 2-zlib_error */
-/* (size given to avoid silly warnings with Visual C++) */
-
-#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
-
-#define ERR_RETURN(strm,err) \
- return (strm->msg = (const char*)ERR_MSG(err), (err))
-/* To be used only when the state is known to be valid */
-
- /* common constants */
-
-#ifndef DEF_WBITS
-# define DEF_WBITS MAX_WBITS
-#endif
-/* default windowBits for decompression. MAX_WBITS is for compression only */
-
-#if MAX_MEM_LEVEL >= 8
-# define DEF_MEM_LEVEL 8
-#else
-# define DEF_MEM_LEVEL MAX_MEM_LEVEL
-#endif
-/* default memLevel */
-
-#define STORED_BLOCK 0
-#define STATIC_TREES 1
-#define DYN_TREES 2
-/* The three kinds of block type */
-
-#define MIN_MATCH 3
-#define MAX_MATCH 258
-/* The minimum and maximum match lengths */
-
-#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
-
- /* target dependencies */
-
-#ifdef MSDOS
-# define OS_CODE 0x00
-# ifdef __TURBOC__
-# include <alloc.h>
-# else /* MSC or DJGPP */
-# include <malloc.h>
-# endif
-#endif
-
-#ifdef OS2
-# define OS_CODE 0x06
-#endif
-
-#ifdef WIN32 /* Window 95 & Windows NT */
-# define OS_CODE 0x0b
-#endif
-
-#if defined(VAXC) || defined(VMS)
-# define OS_CODE 0x02
-# define FOPEN(name, mode) \
- fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
-#endif
-
-#ifdef AMIGA
-# define OS_CODE 0x01
-#endif
-
-#if defined(ATARI) || defined(atarist)
-# define OS_CODE 0x05
-#endif
-
-#ifdef MACOS
-# define OS_CODE 0x07
-#endif
-
-#ifdef __50SERIES /* Prime/PRIMOS */
-# define OS_CODE 0x0F
-#endif
-
-#ifdef TOPS20
-# define OS_CODE 0x0a
-#endif
-
-#if defined(_BEOS_) || defined(RISCOS)
-# define fdopen(fd,mode) NULL /* No fdopen() */
-#endif
-
- /* Common defaults */
-
-#ifndef OS_CODE
-# define OS_CODE 0x03 /* assume Unix */
-#endif
-
-#ifndef FOPEN
-# define FOPEN(name, mode) fopen((name), (mode))
-#endif
-
- /* functions */
-
-#ifdef HAVE_STRERROR
- extern char *strerror OF((int));
-# define zstrerror(errnum) strerror(errnum)
-#else
-# define zstrerror(errnum) ""
-#endif
-
-#if defined(pyr)
-# define NO_MEMCPY
-#endif
-#if (defined(M_I86SM) || defined(M_I86MM)) && !defined(_MSC_VER)
- /* Use our own functions for small and medium model with MSC <= 5.0.
- * You may have to use the same strategy for Borland C (untested).
- */
-# define NO_MEMCPY
-#endif
-#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
-# define HAVE_MEMCPY
-#endif
-#ifdef HAVE_MEMCPY
-# ifdef SMALL_MEDIUM /* MSDOS small or medium model */
-# define zmemcpy _fmemcpy
-# define zmemcmp _fmemcmp
-# define zmemzero(dest, len) _fmemset(dest, 0, len)
-# else
-# define zmemcpy memcpy
-# define zmemcmp memcmp
-# define zmemzero(dest, len) memset(dest, 0, len)
-# endif
-#else
- extern void zmemcpy OF((Bytef* dest, Bytef* source, uInt len));
- extern int zmemcmp OF((Bytef* s1, Bytef* s2, uInt len));
- extern void zmemzero OF((Bytef* dest, uInt len));
-#endif
-
-/* Diagnostic functions */
-#ifdef DEBUG_ZLIB
-# include <stdio.h>
-# ifndef verbose
-# define verbose 0
-# endif
- extern void z_error OF((char *m));
-# define Assert(cond,msg) {if(!(cond)) z_error(msg);}
-# define Trace(x) fprintf x
-# define Tracev(x) {if (verbose) fprintf x ;}
-# define Tracevv(x) {if (verbose>1) fprintf x ;}
-# define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
-# define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
-#else
-# define Assert(cond,msg)
-# define Trace(x)
-# define Tracev(x)
-# define Tracevv(x)
-# define Tracec(c,x)
-# define Tracecv(c,x)
-#endif
-
-
-typedef uLong (*check_func) OF((uLong check, const Bytef *buf, uInt len));
-
-voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
-void zcfree OF((voidpf opaque, voidpf ptr));
-
-#define ZALLOC(strm, items, size) \
- (*((strm)->zalloc))((strm)->opaque, (items), (size))
-#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
-#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
-
-#endif /* _Z_UTIL_H */
-/* --- zutil.h */
-
-/* +++ deflate.h */
-/* deflate.h -- internal compression state
- * Copyright (C) 1995-1996 Jean-loup Gailly
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* From: deflate.h,v 1.10 1996/07/02 12:41:00 me Exp $ */
-
-#ifndef _DEFLATE_H
-#define _DEFLATE_H
-
-/* #include "zutil.h" */
-
-/* ===========================================================================
- * Internal compression state.
- */
-
-#define LENGTH_CODES 29
-/* number of length codes, not counting the special END_BLOCK code */
-
-#define LITERALS 256
-/* number of literal bytes 0..255 */
-
-#define L_CODES (LITERALS+1+LENGTH_CODES)
-/* number of Literal or Length codes, including the END_BLOCK code */
-
-#define D_CODES 30
-/* number of distance codes */
-
-#define BL_CODES 19
-/* number of codes used to transfer the bit lengths */
-
-#define HEAP_SIZE (2*L_CODES+1)
-/* maximum heap size */
-
-#define MAX_BITS 15
-/* All codes must not exceed MAX_BITS bits */
-
-#define INIT_STATE 42
-#define BUSY_STATE 113
-#define FINISH_STATE 666
-/* Stream status */
-
-
-/* Data structure describing a single value and its code string. */
-typedef struct ct_data_s {
- union {
- ush freq; /* frequency count */
- ush code; /* bit string */
- } fc;
- union {
- ush dad; /* father node in Huffman tree */
- ush len; /* length of bit string */
- } dl;
-} FAR ct_data;
-
-#define Freq fc.freq
-#define Code fc.code
-#define Dad dl.dad
-#define Len dl.len
-
-typedef struct static_tree_desc_s static_tree_desc;
-
-typedef struct tree_desc_s {
- ct_data *dyn_tree; /* the dynamic tree */
- int max_code; /* largest code with non zero frequency */
- static_tree_desc *stat_desc; /* the corresponding static tree */
-} FAR tree_desc;
-
-typedef ush Pos;
-typedef Pos FAR Posf;
-typedef unsigned IPos;
-
-/* A Pos is an index in the character window. We use short instead of int to
- * save space in the various tables. IPos is used only for parameter passing.
- */
-
-typedef struct deflate_state {
- z_streamp strm; /* pointer back to this zlib stream */
- int status; /* as the name implies */
- Bytef *pending_buf; /* output still pending */
- ulg pending_buf_size; /* size of pending_buf */
- Bytef *pending_out; /* next pending byte to output to the stream */
- int pending; /* nb of bytes in the pending buffer */
- int noheader; /* suppress zlib header and adler32 */
- Byte data_type; /* UNKNOWN, BINARY or ASCII */
- Byte method; /* STORED (for zip only) or DEFLATED */
- int last_flush; /* value of flush param for previous deflate call */
-
- /* used by deflate.c: */
-
- uInt w_size; /* LZ77 window size (32K by default) */
- uInt w_bits; /* log2(w_size) (8..16) */
- uInt w_mask; /* w_size - 1 */
-
- Bytef *window;
- /* Sliding window. Input bytes are read into the second half of the window,
- * and move to the first half later to keep a dictionary of at least wSize
- * bytes. With this organization, matches are limited to a distance of
- * wSize-MAX_MATCH bytes, but this ensures that IO is always
- * performed with a length multiple of the block size. Also, it limits
- * the window size to 64K, which is quite useful on MSDOS.
- * To do: use the user input buffer as sliding window.
- */
-
- ulg window_size;
- /* Actual size of window: 2*wSize, except when the user input buffer
- * is directly used as sliding window.
- */
-
- Posf *prev;
- /* Link to older string with same hash index. To limit the size of this
- * array to 64K, this link is maintained only for the last 32K strings.
- * An index in this array is thus a window index modulo 32K.
- */
-
- Posf *head; /* Heads of the hash chains or NIL. */
-
- uInt ins_h; /* hash index of string to be inserted */
- uInt hash_size; /* number of elements in hash table */
- uInt hash_bits; /* log2(hash_size) */
- uInt hash_mask; /* hash_size-1 */
-
- uInt hash_shift;
- /* Number of bits by which ins_h must be shifted at each input
- * step. It must be such that after MIN_MATCH steps, the oldest
- * byte no longer takes part in the hash key, that is:
- * hash_shift * MIN_MATCH >= hash_bits
- */
-
- long block_start;
- /* Window position at the beginning of the current output block. Gets
- * negative when the window is moved backwards.
- */
-
- uInt match_length; /* length of best match */
- IPos prev_match; /* previous match */
- int match_available; /* set if previous match exists */
- uInt strstart; /* start of string to insert */
- uInt match_start; /* start of matching string */
- uInt lookahead; /* number of valid bytes ahead in window */
-
- uInt prev_length;
- /* Length of the best match at previous step. Matches not greater than this
- * are discarded. This is used in the lazy match evaluation.
- */
-
- uInt max_chain_length;
- /* To speed up deflation, hash chains are never searched beyond this
- * length. A higher limit improves compression ratio but degrades the
- * speed.
- */
-
- uInt max_lazy_match;
- /* Attempt to find a better match only when the current match is strictly
- * smaller than this value. This mechanism is used only for compression
- * levels >= 4.
- */
-# define max_insert_length max_lazy_match
- /* Insert new strings in the hash table only if the match length is not
- * greater than this length. This saves time but degrades compression.
- * max_insert_length is used only for compression levels <= 3.
- */
-
- int level; /* compression level (1..9) */
- int strategy; /* favor or force Huffman coding*/
-
- uInt good_match;
- /* Use a faster search when the previous match is longer than this */
-
- int nice_match; /* Stop searching when current match exceeds this */
-
- /* used by trees.c: */
- /* Didn't use ct_data typedef below to supress compiler warning */
- struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */
- struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
- struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */
-
- struct tree_desc_s l_desc; /* desc. for literal tree */
- struct tree_desc_s d_desc; /* desc. for distance tree */
- struct tree_desc_s bl_desc; /* desc. for bit length tree */
-
- ush bl_count[MAX_BITS+1];
- /* number of codes at each bit length for an optimal tree */
-
- int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */
- int heap_len; /* number of elements in the heap */
- int heap_max; /* element of largest frequency */
- /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
- * The same heap array is used to build all trees.
- */
-
- uch depth[2*L_CODES+1];
- /* Depth of each subtree used as tie breaker for trees of equal frequency
- */
-
- uchf *l_buf; /* buffer for literals or lengths */
-
- uInt lit_bufsize;
- /* Size of match buffer for literals/lengths. There are 4 reasons for
- * limiting lit_bufsize to 64K:
- * - frequencies can be kept in 16 bit counters
- * - if compression is not successful for the first block, all input
- * data is still in the window so we can still emit a stored block even
- * when input comes from standard input. (This can also be done for
- * all blocks if lit_bufsize is not greater than 32K.)
- * - if compression is not successful for a file smaller than 64K, we can
- * even emit a stored file instead of a stored block (saving 5 bytes).
- * This is applicable only for zip (not gzip or zlib).
- * - creating new Huffman trees less frequently may not provide fast
- * adaptation to changes in the input data statistics. (Take for
- * example a binary file with poorly compressible code followed by
- * a highly compressible string table.) Smaller buffer sizes give
- * fast adaptation but have of course the overhead of transmitting
- * trees more frequently.
- * - I can't count above 4
- */
-
- uInt last_lit; /* running index in l_buf */
-
- ushf *d_buf;
- /* Buffer for distances. To simplify the code, d_buf and l_buf have
- * the same number of elements. To use different lengths, an extra flag
- * array would be necessary.
- */
-
- ulg opt_len; /* bit length of current block with optimal trees */
- ulg static_len; /* bit length of current block with static trees */
- ulg compressed_len; /* total bit length of compressed file */
- uInt matches; /* number of string matches in current block */
- int last_eob_len; /* bit length of EOB code for last block */
-
-#ifdef DEBUG_ZLIB
- ulg bits_sent; /* bit length of the compressed data */
-#endif
-
- ush bi_buf;
- /* Output buffer. bits are inserted starting at the bottom (least
- * significant bits).
- */
- int bi_valid;
- /* Number of valid bits in bi_buf. All bits above the last valid bit
- * are always zero.
- */
-
-} FAR deflate_state;
-
-/* Output a byte on the stream.
- * IN assertion: there is enough room in pending_buf.
- */
-#define put_byte(s, c) {s->pending_buf[s->pending++] = (c);}
-
-
-#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
-/* Minimum amount of lookahead, except at the end of the input file.
- * See deflate.c for comments about the MIN_MATCH+1.
- */
-
-#define MAX_DIST(s) ((s)->w_size-MIN_LOOKAHEAD)
-/* In order to simplify the code, particularly on 16 bit machines, match
- * distances are limited to MAX_DIST instead of WSIZE.
- */
-
- /* in trees.c */
-void _tr_init OF((deflate_state *s));
-int _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc));
-ulg _tr_flush_block OF((deflate_state *s, charf *buf, ulg stored_len,
- int eof));
-void _tr_align OF((deflate_state *s));
-void _tr_stored_block OF((deflate_state *s, charf *buf, ulg stored_len,
- int eof));
-void _tr_stored_type_only OF((deflate_state *));
-
-#endif
-/* --- deflate.h */
-
-/* +++ deflate.c */
-/* deflate.c -- compress data using the deflation algorithm
- * Copyright (C) 1995-1996 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/*
- * ALGORITHM
- *
- * The "deflation" process depends on being able to identify portions
- * of the input text which are identical to earlier input (within a
- * sliding window trailing behind the input currently being processed).
- *
- * The most straightforward technique turns out to be the fastest for
- * most input files: try all possible matches and select the longest.
- * The key feature of this algorithm is that insertions into the string
- * dictionary are very simple and thus fast, and deletions are avoided
- * completely. Insertions are performed at each input character, whereas
- * string matches are performed only when the previous match ends. So it
- * is preferable to spend more time in matches to allow very fast string
- * insertions and avoid deletions. The matching algorithm for small
- * strings is inspired from that of Rabin & Karp. A brute force approach
- * is used to find longer strings when a small match has been found.
- * A similar algorithm is used in comic (by Jan-Mark Wams) and freeze
- * (by Leonid Broukhis).
- * A previous version of this file used a more sophisticated algorithm
- * (by Fiala and Greene) which is guaranteed to run in linear amortized
- * time, but has a larger average cost, uses more memory and is patented.
- * However the F&G algorithm may be faster for some highly redundant
- * files if the parameter max_chain_length (described below) is too large.
- *
- * ACKNOWLEDGEMENTS
- *
- * The idea of lazy evaluation of matches is due to Jan-Mark Wams, and
- * I found it in 'freeze' written by Leonid Broukhis.
- * Thanks to many people for bug reports and testing.
- *
- * REFERENCES
- *
- * Deutsch, L.P.,"DEFLATE Compressed Data Format Specification".
- * Available in ftp://ds.internic.net/rfc/rfc1951.txt
- *
- * A description of the Rabin and Karp algorithm is given in the book
- * "Algorithms" by R. Sedgewick, Addison-Wesley, p252.
- *
- * Fiala,E.R., and Greene,D.H.
- * Data Compression with Finite Windows, Comm.ACM, 32,4 (1989) 490-595
- *
- */
-
-/* From: deflate.c,v 1.15 1996/07/24 13:40:58 me Exp $ */
-
-/* #include "deflate.h" */
-
-char deflate_copyright[] = " deflate 1.0.4 Copyright 1995-1996 Jean-loup Gailly ";
-/*
- If you use the zlib library in a product, an acknowledgment is welcome
- in the documentation of your product. If for some reason you cannot
- include such an acknowledgment, I would appreciate that you keep this
- copyright string in the executable of your product.
- */
-
-/* ===========================================================================
- * Function prototypes.
- */
-typedef enum {
- need_more, /* block not completed, need more input or more output */
- block_done, /* block flush performed */
- finish_started, /* finish started, need only more output at next deflate */
- finish_done /* finish done, accept no more input or output */
-} block_state;
-
-typedef block_state (*compress_func) OF((deflate_state *s, int flush));
-/* Compression function. Returns the block state after the call. */
-
-local void fill_window OF((deflate_state *s));
-local block_state deflate_stored OF((deflate_state *s, int flush));
-local block_state deflate_fast OF((deflate_state *s, int flush));
-local block_state deflate_slow OF((deflate_state *s, int flush));
-local void lm_init OF((deflate_state *s));
-local void putShortMSB OF((deflate_state *s, uInt b));
-local void flush_pending OF((z_streamp strm));
-local int read_buf OF((z_streamp strm, charf *buf, unsigned size));
-#ifdef ASMV
- void match_init OF((void)); /* asm code initialization */
- uInt longest_match OF((deflate_state *s, IPos cur_match));
-#else
-local uInt longest_match OF((deflate_state *s, IPos cur_match));
-#endif
-
-#ifdef DEBUG_ZLIB
-local void check_match OF((deflate_state *s, IPos start, IPos match,
- int length));
-#endif
-
-/* ===========================================================================
- * Local data
- */
-
-#define NIL 0
-/* Tail of hash chains */
-
-#ifndef TOO_FAR
-# define TOO_FAR 4096
-#endif
-/* Matches of length 3 are discarded if their distance exceeds TOO_FAR */
-
-#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
-/* Minimum amount of lookahead, except at the end of the input file.
- * See deflate.c for comments about the MIN_MATCH+1.
- */
-
-/* Values for max_lazy_match, good_match and max_chain_length, depending on
- * the desired pack level (0..9). The values given below have been tuned to
- * exclude worst case performance for pathological files. Better values may be
- * found for specific files.
- */
-typedef struct config_s {
- ush good_length; /* reduce lazy search above this match length */
- ush max_lazy; /* do not perform lazy search above this match length */
- ush nice_length; /* quit search above this match length */
- ush max_chain;
- compress_func func;
-} config;
-
-local config configuration_table[10] = {
-/* good lazy nice chain */
-/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */
-/* 1 */ {4, 4, 8, 4, deflate_fast}, /* maximum speed, no lazy matches */
-/* 2 */ {4, 5, 16, 8, deflate_fast},
-/* 3 */ {4, 6, 32, 32, deflate_fast},
-
-/* 4 */ {4, 4, 16, 16, deflate_slow}, /* lazy matches */
-/* 5 */ {8, 16, 32, 32, deflate_slow},
-/* 6 */ {8, 16, 128, 128, deflate_slow},
-/* 7 */ {8, 32, 128, 256, deflate_slow},
-/* 8 */ {32, 128, 258, 1024, deflate_slow},
-/* 9 */ {32, 258, 258, 4096, deflate_slow}}; /* maximum compression */
-
-/* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4
- * For deflate_fast() (levels <= 3) good is ignored and lazy has a different
*** DIFF OUTPUT TRUNCATED AT 1000 LINES ***
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