The LIT_MEM option uses slightly more memory (for base gzip(1),
about 16kiB; according to the author, about 6% for default deflate
settings) for a small speedup.
The performance gain is more noticeable for input data with higher
entropy and less significant for data that is highly compressible,
such as source code and logs.
MFC after: 1 month
This appeases -Wstrict-prototypes with GCC. Using a separate
prototype using the OF macro seems to be consistent with the rest of
this file which still supports pre-ANSI C.
Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D36755
The recent commit to fix a gzip header extra field processing bug
introduced the new bug fixed here.
(cherry picked from zlib commit 1eb7682f845ac9e9bf9ae35bbfb3bad5dacbd91d)
If the extra field was larger than the space the user provided with
inflateGetHeader(), and if multiple calls of inflate() delivered
the extra header data, then there could be a buffer overflow of the
provided space. This commit assures that provided space is not
exceeded.
(cherry picked from zlib commit eff308af425b67093bab25f80f1ae950166bece1)
This is a temporary hack for zlib to make sure that the library
still builds when building with Z_SOLO (used in kernel and loader),
as zlib is depending on limits.h which is only available in STDC
case.
PR: kern/262977
MFC after: 3 days
gzlib.c uses lseek but does not include unistd.h, where it is defined to
live. On FreeBSD this happens to work due to sys/types.h declaring it,
but on macOS it fails due to being only implicitly declared, which is
treated as an error by default by the system Clang.
MFC after: 1 week
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
This is a prerequisite of unifying kernel zlib instances.
Submitted by: Yoshihiro Ota <ota at j.email.ne.jp>
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D20191
