From: "Han-Wen Nienhuys via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: Han-Wen Nienhuys <hanwenn@gmail.com>,
Han-Wen Nienhuys <hanwen@google.com>
Subject: [PATCH 07/19] Provide zlib's uncompress2 from compat/zlib-compat.c
Date: Mon, 30 Aug 2021 14:57:43 +0000 [thread overview]
Message-ID: <aa9b8e05dbdd8c6ad5ff687b5a1aefe31d78853b.1630335476.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.1081.git.git.1630335476.gitgitgadget@gmail.com>
From: Han-Wen Nienhuys <hanwen@google.com>
This will be needed for reading reflog blocks in reftable.
Helped-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
---
Makefile | 7 +++
ci/lib.sh | 1 +
compat/.gitattributes | 1 +
compat/zlib-uncompress2.c | 92 +++++++++++++++++++++++++++++++++++++++
config.mak.uname | 1 +
configure.ac | 13 ++++++
6 files changed, 115 insertions(+)
create mode 100644 compat/.gitattributes
create mode 100644 compat/zlib-uncompress2.c
diff --git a/Makefile b/Makefile
index 02a83a67467..ec89320080b 100644
--- a/Makefile
+++ b/Makefile
@@ -256,6 +256,8 @@ all::
#
# Define NO_DEFLATE_BOUND if your zlib does not have deflateBound.
#
+# Define NO_UNCOMPRESS2 if your zlib does not have uncompress2.
+#
# Define NO_NORETURN if using buggy versions of gcc 4.6+ and profile feedback,
# as the compiler can crash (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49299)
#
@@ -1738,6 +1740,11 @@ ifdef NO_DEFLATE_BOUND
BASIC_CFLAGS += -DNO_DEFLATE_BOUND
endif
+ifdef NO_UNCOMPRESS2
+ BASIC_CFLAGS += -DNO_UNCOMPRESS2
+ REFTABLE_OBJS += compat/zlib-uncompress2.o
+endif
+
ifdef NO_POSIX_GOODIES
BASIC_CFLAGS += -DNO_POSIX_GOODIES
endif
diff --git a/ci/lib.sh b/ci/lib.sh
index 476c3f369f5..5711c63979d 100755
--- a/ci/lib.sh
+++ b/ci/lib.sh
@@ -224,6 +224,7 @@ linux-gcc-default)
;;
Linux32)
CC=gcc
+ MAKEFLAGS="$MAKEFLAGS NO_UNCOMPRESS2=1"
;;
linux-musl)
CC=gcc
diff --git a/compat/.gitattributes b/compat/.gitattributes
new file mode 100644
index 00000000000..40dbfb170da
--- /dev/null
+++ b/compat/.gitattributes
@@ -0,0 +1 @@
+/zlib-uncompress2.c whitespace=-indent-with-non-tab,-trailing-space
diff --git a/compat/zlib-uncompress2.c b/compat/zlib-uncompress2.c
new file mode 100644
index 00000000000..6893bb469ce
--- /dev/null
+++ b/compat/zlib-uncompress2.c
@@ -0,0 +1,92 @@
+/* taken from zlib's uncompr.c
+
+ commit cacf7f1d4e3d44d871b605da3b647f07d718623f
+ Author: Mark Adler <madler@alumni.caltech.edu>
+ Date: Sun Jan 15 09:18:46 2017 -0800
+
+ zlib 1.2.11
+
+*/
+
+/*
+ * Copyright (C) 1995-2003, 2010, 2014, 2016 Jean-loup Gailly, Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+#include <zlib.h>
+
+/* clang-format off */
+
+/* ===========================================================================
+ Decompresses the source buffer into the destination buffer. *sourceLen is
+ the byte length of the source buffer. Upon entry, *destLen is the total size
+ of the destination buffer, which must be large enough to hold the entire
+ uncompressed data. (The size of the uncompressed data must have been saved
+ previously by the compressor and transmitted to the decompressor by some
+ mechanism outside the scope of this compression library.) Upon exit,
+ *destLen is the size of the decompressed data and *sourceLen is the number
+ of source bytes consumed. Upon return, source + *sourceLen points to the
+ first unused input byte.
+
+ uncompress returns Z_OK if success, Z_MEM_ERROR if there was not enough
+ memory, Z_BUF_ERROR if there was not enough room in the output buffer, or
+ Z_DATA_ERROR if the input data was corrupted, including if the input data is
+ an incomplete zlib stream.
+*/
+int ZEXPORT uncompress2 (
+ Bytef *dest,
+ uLongf *destLen,
+ const Bytef *source,
+ uLong *sourceLen) {
+ z_stream stream;
+ int err;
+ const uInt max = (uInt)-1;
+ uLong len, left;
+ Byte buf[1]; /* for detection of incomplete stream when *destLen == 0 */
+
+ len = *sourceLen;
+ if (*destLen) {
+ left = *destLen;
+ *destLen = 0;
+ }
+ else {
+ left = 1;
+ dest = buf;
+ }
+
+ stream.next_in = (z_const Bytef *)source;
+ stream.avail_in = 0;
+ stream.zalloc = (alloc_func)0;
+ stream.zfree = (free_func)0;
+ stream.opaque = (voidpf)0;
+
+ err = inflateInit(&stream);
+ if (err != Z_OK) return err;
+
+ stream.next_out = dest;
+ stream.avail_out = 0;
+
+ do {
+ if (stream.avail_out == 0) {
+ stream.avail_out = left > (uLong)max ? max : (uInt)left;
+ left -= stream.avail_out;
+ }
+ if (stream.avail_in == 0) {
+ stream.avail_in = len > (uLong)max ? max : (uInt)len;
+ len -= stream.avail_in;
+ }
+ err = inflate(&stream, Z_NO_FLUSH);
+ } while (err == Z_OK);
+
+ *sourceLen -= len + stream.avail_in;
+ if (dest != buf)
+ *destLen = stream.total_out;
+ else if (stream.total_out && err == Z_BUF_ERROR)
+ left = 1;
+
+ inflateEnd(&stream);
+ return err == Z_STREAM_END ? Z_OK :
+ err == Z_NEED_DICT ? Z_DATA_ERROR :
+ err == Z_BUF_ERROR && left + stream.avail_out ? Z_DATA_ERROR :
+ err;
+}
diff --git a/config.mak.uname b/config.mak.uname
index 76516aaa9a5..c1890e4bc8d 100644
--- a/config.mak.uname
+++ b/config.mak.uname
@@ -258,6 +258,7 @@ ifeq ($(uname_S),FreeBSD)
FILENO_IS_A_MACRO = UnfortunatelyYes
endif
ifeq ($(uname_S),OpenBSD)
+ NO_UNCOMPRESS2 = YesPlease
NO_STRCASESTR = YesPlease
NO_MEMMEM = YesPlease
USE_ST_TIMESPEC = YesPlease
diff --git a/configure.ac b/configure.ac
index 031e8d3fee8..c3a913103d0 100644
--- a/configure.ac
+++ b/configure.ac
@@ -672,9 +672,22 @@ AC_LINK_IFELSE([ZLIBTEST_SRC],
NO_DEFLATE_BOUND=yes])
LIBS="$old_LIBS"
+AC_DEFUN([ZLIBTEST_UNCOMPRESS2_SRC], [
+AC_LANG_PROGRAM([#include <zlib.h>],
+ [uncompress2(NULL,NULL,NULL,NULL);])])
+AC_MSG_CHECKING([for uncompress2 in -lz])
+old_LIBS="$LIBS"
+LIBS="$LIBS -lz"
+AC_LINK_IFELSE([ZLIBTEST_UNCOMPRESS2_SRC],
+ [AC_MSG_RESULT([yes])],
+ [AC_MSG_RESULT([no])
+ NO_UNCOMPRESS2=yes])
+LIBS="$old_LIBS"
+
GIT_UNSTASH_FLAGS($ZLIB_PATH)
GIT_CONF_SUBST([NO_DEFLATE_BOUND])
+GIT_CONF_SUBST([NO_UNCOMPRESS2])
#
# Define NEEDS_SOCKET if linking with libc is not enough (SunOS,
--
gitgitgadget
next prev parent reply other threads:[~2021-08-30 15:00 UTC|newest]
Thread overview: 111+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-30 14:57 [PATCH 00/19] Adds reftable library code from https://github.com/hanwen/reftable Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 01/19] hash.h: provide constants for the hash IDs Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 02/19] reftable: RFC: add LICENSE Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 03/19] reftable: add error related functionality Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 04/19] reftable: utility functions Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 05/19] reftable: add blocksource, an abstraction for random access reads Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 06/19] reftable: (de)serialization for the polymorphic record type Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` Han-Wen Nienhuys via GitGitGadget [this message]
2021-09-02 6:12 ` [PATCH] fixup! Provide zlib's uncompress2 from compat/zlib-compat.c Carlo Marcelo Arenas Belón
2021-08-30 14:57 ` [PATCH 08/19] reftable: reading/writing blocks Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 09/19] reftable: a generic binary tree implementation Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 10/19] reftable: write reftable files Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 11/19] reftable: generic interface to tables Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 12/19] reftable: read reftable files Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 13/19] reftable: reftable file level tests Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 14/19] reftable: add a heap-based priority queue for reftable records Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 15/19] reftable: add merged table view Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 16/19] reftable: implement refname validation Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 17/19] reftable: implement stack, a mutable database of reftable files Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 18/19] reftable: add dump utility Han-Wen Nienhuys via GitGitGadget
2021-08-30 14:57 ` [PATCH 19/19] Add "test-tool dump-reftable" command Han-Wen Nienhuys via GitGitGadget
2021-08-30 15:22 ` [PATCH 00/19] Adds reftable library code from https://github.com/hanwen/reftable Han-Wen Nienhuys
2021-09-08 7:45 ` [PATCH 0/4] fixup for hn/reftable Carlo Marcelo Arenas Belón
2021-09-08 7:45 ` [PATCH 1/4] fixup! reftable: reading/writing blocks Carlo Marcelo Arenas Belón
2021-09-08 7:45 ` [PATCH 2/4] fixup! reftable: utility functions Carlo Marcelo Arenas Belón
2021-09-08 7:45 ` [PATCH 3/4] fixup! Provide zlib's uncompress2 from compat/zlib-compat.c Carlo Marcelo Arenas Belón
2021-09-08 7:45 ` [PATCH 4/4] fixup! reftable: utility functions Carlo Marcelo Arenas Belón
2021-09-08 18:50 ` [PATCH 0/4] fixup for hn/reftable Junio C Hamano
2021-09-09 18:47 ` [PATCH v2 00/19] Adds reftable library code from https://github.com/hanwen/reftable Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 01/19] hash.h: provide constants for the hash IDs Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 02/19] reftable: RFC: add LICENSE Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 03/19] reftable: add error related functionality Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 04/19] reftable: utility functions Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 05/19] reftable: add blocksource, an abstraction for random access reads Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 06/19] reftable: (de)serialization for the polymorphic record type Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 07/19] Provide zlib's uncompress2 from compat/zlib-compat.c Han-Wen Nienhuys via GitGitGadget
2021-09-15 7:34 ` Carlo Arenas
2021-09-09 18:47 ` [PATCH v2 08/19] reftable: reading/writing blocks Han-Wen Nienhuys via GitGitGadget
2021-09-24 11:52 ` Ævar Arnfjörð Bjarmason
2021-09-09 18:47 ` [PATCH v2 09/19] reftable: a generic binary tree implementation Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 10/19] reftable: write reftable files Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 11/19] reftable: generic interface to tables Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 12/19] reftable: read reftable files Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 13/19] reftable: reftable file level tests Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 14/19] reftable: add a heap-based priority queue for reftable records Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 15/19] reftable: add merged table view Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 16/19] reftable: implement refname validation Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 17/19] reftable: implement stack, a mutable database of reftable files Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 18/19] reftable: add dump utility Han-Wen Nienhuys via GitGitGadget
2021-09-09 18:47 ` [PATCH v2 19/19] Add "test-tool dump-reftable" command Han-Wen Nienhuys via GitGitGadget
2021-09-09 20:02 ` [PATCH v2 00/19] Adds reftable library code from https://github.com/hanwen/reftable Junio C Hamano
2021-09-09 20:32 ` Junio C Hamano
2021-09-13 10:14 ` Han-Wen Nienhuys
2021-09-13 18:30 ` Junio C Hamano
2021-09-13 19:29 ` Carlo Arenas
2021-09-13 20:34 ` Junio C Hamano
2021-09-28 15:09 ` [PATCH v3 " Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:09 ` [PATCH v3 01/19] hash.h: provide constants for the hash IDs Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:09 ` [PATCH v3 02/19] reftable: RFC: add LICENSE Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 03/19] reftable: add error related functionality Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 04/19] reftable: utility functions Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 05/19] reftable: add blocksource, an abstraction for random access reads Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 06/19] reftable: (de)serialization for the polymorphic record type Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 07/19] Provide zlib's uncompress2 from compat/zlib-compat.c Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 08/19] reftable: reading/writing blocks Han-Wen Nienhuys via GitGitGadget
2021-09-30 12:23 ` [PATCH] squash! " Carlo Marcelo Arenas Belón
2021-10-07 16:34 ` Han-Wen Nienhuys
2021-09-28 15:10 ` [PATCH v3 09/19] reftable: a generic binary tree implementation Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 10/19] reftable: write reftable files Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 11/19] reftable: generic interface to tables Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 12/19] reftable: read reftable files Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 13/19] reftable: reftable file level tests Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 14/19] reftable: add a heap-based priority queue for reftable records Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 15/19] reftable: add merged table view Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 16/19] reftable: implement refname validation Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 17/19] reftable: implement stack, a mutable database of reftable files Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 18/19] reftable: add dump utility Han-Wen Nienhuys via GitGitGadget
2021-09-28 15:10 ` [PATCH v3 19/19] Add "test-tool dump-reftable" command Han-Wen Nienhuys via GitGitGadget
2021-09-28 18:17 ` [PATCH v3 00/19] Adds reftable library code from https://github.com/hanwen/reftable Junio C Hamano
2021-10-02 9:20 ` Ævar Arnfjörð Bjarmason
2021-09-30 5:40 ` hn/reftable "fixes" Carlo Marcelo Arenas Belón
2021-09-30 5:40 ` [PATCH 1/4] fixup! reftable: add a heap-based priority queue for reftable records Carlo Marcelo Arenas Belón
2021-09-30 5:40 ` [PATCH 2/4] fixup! reftable: implement stack, a mutable database of reftable files Carlo Marcelo Arenas Belón
2021-10-01 15:37 ` C++(C99)-style comments in git.git Ævar Arnfjörð Bjarmason
2021-09-30 5:40 ` [PATCH 3/4] config.mak.uname: last release and snapshots of Minix still use zlib 1.2.3 Carlo Marcelo Arenas Belón
2021-09-30 5:40 ` [PATCH 4/4] reftable: avoid non portable compile time pointer to function Carlo Marcelo Arenas Belón
2021-09-30 20:35 ` hn/reftable "fixes" Junio C Hamano
2021-10-07 20:24 ` [PATCH v4 00/19] Adds reftable library code from https://github.com/hanwen/reftable Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:24 ` [PATCH v4 01/19] hash.h: provide constants for the hash IDs Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:24 ` [PATCH v4 02/19] reftable: add LICENSE Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:24 ` [PATCH v4 03/19] reftable: add error related functionality Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 04/19] reftable: utility functions Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 05/19] reftable: add blocksource, an abstraction for random access reads Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 06/19] reftable: (de)serialization for the polymorphic record type Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 07/19] Provide zlib's uncompress2 from compat/zlib-compat.c Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 08/19] reftable: reading/writing blocks Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 09/19] reftable: a generic binary tree implementation Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 10/19] reftable: write reftable files Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 11/19] reftable: generic interface to tables Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 12/19] reftable: read reftable files Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 13/19] reftable: reftable file level tests Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 14/19] reftable: add a heap-based priority queue for reftable records Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 15/19] reftable: add merged table view Han-Wen Nienhuys via GitGitGadget
2022-01-13 11:38 ` [PATCH] reftable tests: use C syntax compatible with old xlc Ævar Arnfjörð Bjarmason
2022-01-13 14:23 ` Han-Wen Nienhuys
2022-01-13 16:22 ` Ævar Arnfjörð Bjarmason
2022-01-13 19:09 ` Junio C Hamano
2021-10-07 20:25 ` [PATCH v4 16/19] reftable: implement refname validation Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 17/19] reftable: implement stack, a mutable database of reftable files Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 18/19] reftable: add dump utility Han-Wen Nienhuys via GitGitGadget
2021-10-07 20:25 ` [PATCH v4 19/19] Add "test-tool dump-reftable" command Han-Wen Nienhuys via GitGitGadget
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