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C23 does not allow K&R style function definitions.
Use protyped definitions. However, don't bother with (void) in
function definitions since C23 prefers (); so prefer () to (void) as
this will work with older compilers anyway.
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gzip -l now decompresses to see how long the uncompressed file was.
This fixes what is by far the most common bug report for gzip.
It has a significant performance cost, but it’s worth it nowadays.
* gzip.c (main): -l now sets 'test' too. All uses of
'test' changed.
(treat_stdin, treat_file): Call do_list after decompressing,
so that the length is known.
(do_list): Omit arg IFD, since it is no longer needed.
All callers changed. Get the CRC and uncompressed size
from input_crc and bytes_out instead of using lseek.
* tests/list-big: New test.
* unzip.c (unzip): Set unzip_crc before returning.
* util.c (write_buf): If 'test', output nothing.
Update bytes_out with output byte count, regardless of 'test'.
All callers changed.
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Run "make update-copyright" and then...
* gnulib: Update to latest with copyright year adjusted.
* tests/init.sh: Sync with gnulib to pick up copyright year.
* bootstrap: Likewise.
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Run "make update-copyright" and then...
* gnulib: Update to latest with copyright year adjusted.
* tests/init.sh: Sync with gnulib to pick up copyright year.
* bootstrap: Likewise.
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Most of this is minor changes to use GNU style and C99 constructs.
* NEWS: Mention IBM Z.
* bootstrap.conf (gnulib_modules): Add stdalign.
* dfltcc.c: Include stdalign.h, stdbool.h.
(union aligned_dfltcc_qaf_param, union aligned_dfltcc_param_v0):
New types, used for C11-style alignment. All uses changed.
(init_param):
* gzip.c (BUFFER_ALIGNED): New macro.
(inbuf, outbuf, window): Use it, so buffers are aligned everywhere.
* gzip.h (INBUFSIZ, OUTBUFSIZE): Use big buffers everywhere,
unless SMALL_MEM.
* zip.c (SLOW, FAST): Now enums since they need not be macros:
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Future versions of IBM Z mainframes will provide DFLTCC instruction,
which implements deflate algorithm in hardware with estimated
compression and decompression performance orders of magnitude faster
than the current gzip and ratio comparable with that of level 1.
This patch adds DFLTCC support to gzip. In order to enable it, the
following build commands should be used:
$ ./configure --enable-dfltcc
$ make
When built like this, gzip would compress in hardware on level 1, and in
software on all other levels. Decompression will always happen in
hardware. In order to enable DFLTCC compression for levels 1-6 (i.e. to
make it used by default) one could either add -DDFLTCC_LEVEL_MASK=0x7e
at compile time, or set the environment variable DFLTCC_LEVEL_MASK to
0x7e at run time.
Two DFLTCC compression calls produce the same results only when they
both are made on machines of the same generation, and when the
respective buffers have the same offset relative to the start of the
page. Therefore care should be taken when using hardware compression
when reproducible results are desired. One such use case - reproducible
software builds - is handled explicitly: when SOURCE_DATE_EPOCH
environment variable is set, the hardware compression is disabled.
This patch tries to add DFLTCC support in a least intrusive way.
All SystemZ-specific code was placed into a separate file, but
unfortunately there is still a noticeable amount of changes in the
main gzip code. Below is the summary of those changes.
DFLTCC will refuse to write an End-of-block Symbol if there is no input
data, thus in some cases it is necessary to do this manually. In order
to achieve this, bi_buf and bi_valid were promoted to extern variables.
lm_init() function moves the input buffer into the window, which is not
desirable for DFLTCC. Therefore, its invocation was moved to
software-only deflate(). In addition to initializing the window, this
function also used to convert compression level to flags, which is still
needed for DFLTCC. This responsibility was handed off to zip() function.
To achieve maximum performance with DFLTCC, inbuf and outbuf must be
256k big and page-aligned. Additionally, for DFLTCC to work at all, the
window must be page-aligned.
In addition to compression, DFLTCC computes CRC-32 checksum, therefore,
whenever it's used, software checksumming needs to be suppressed and its
results replaced by those of dfltcc. This is achieved by introducing the
new getcrc() and setcrc() functions.
Unlike the current software implementation, DFLTCC decompresses data
into the output buffer, and not the window. Therefore, just like
flushing the window, flushing the output buffer must honor the test
flag.
Finally, znew-k test assumes that "znew -K" would not convert the test
.Z file to .gz, which is not the case with DFLTCC. Since this is not the
main point of the test, this assumption was relaxed.
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* gnulib: Also update submodule for its copyright updates.
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* gnulib: Update to latest.
* bootstrap: Update from gnulib.
* all files: Run "make update-copyright".
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This avoids a new syntax-check failure.
* ChangeLog-2007: Perform that change.
* NEWS: Likewise.
* algorithm.doc: Likewise.
* doc/gzip.texi: Likewise.
* gunzip.in: Likewise.
* gzip.1: Likewise.
* gzip.c: Likewise.
* gzip.h: Likewise.
* m4/.gitignore: Likewise.
* sample/ztouch: Likewise.
* tests/timestamp: Likewise.
* unzip.c: Likewise.
* zip.c: Likewise.
* znew.1: Likewise.
* cfg.mk: Update the old news hash accordingly.
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* gnulib: Update to latest.
* all files: Run "make update-copyright".
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Run "make update-copyright" and then...
* gzip.c: Transform the copyright notice via s/2015/2016/.
* gnulib: Update to latest.
* tests/init.sh: Update from gnulib.
* bootstrap: Likewise.
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* unzip.c (unzip): Correct two format strings to match the types of the corresponding arguments.
* unlzw.c (unlzw): Cast an "int" to unsigned to match expected type of %x.
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Run "make update-copyright".
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Run "make update-copyright".
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* deflate.c: Likewise.
* gzip.c: Likewise.
* gzip.h: Likewise.
* inflate.c: Likewise.
* trees.c: Likewise.
* unzip.c: Likewise.
* util.c: Likewise.
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* Makefile.am (gzip_SOURCES): Remove crypt.c
(EXTRA_DIST): Remove crypt.h
* crypt.c, crypt.h: Remove files.
* unpack.c: Don't #include "crypt.h"
* zip.c: Likewise
* util.c: Likewise.
* unzip.c: Likewise.
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Run "make update-copyright", so "make syntax-check" works in 2011.
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Transformed via this shell code:
t=$'\t'
git ls-files \
| grep -vE '(^|/)((GNU)?[Mm]akefile|ChangeLog)|\.(am|mk)$' \
| grep -vE 'tests/pr/|help2man' \
| xargs grep -lE "^ *$t" \
| xargs perl -MText::Tabs -ni -le \
'$m=/^( *\t[ \t]*)(.*)/; print $m ? expand($1) . $2 : $_'
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Use this command:
git ls-files |grep -vE '^(\..*|COPYING|gnulib)$' |xargs \
env UPDATE_COPYRIGHT_USE_INTERVALS=1 build-aux/update-copyright
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* unzip.c (LOCTIM): Comment out unused macro.
* deflate.c (EQUAL): Remove definition. Use "0" at sole point of use.
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* bootstrap.conf (gnulib_modules): Add update-copyright.
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Version 1.3.6 released.
* NEWS: Describe 1.3.6's changes.
* NEWS, README, README-alpha, TODO: Change from GPL to FDL.
* .cvsignore, README-cvs, bootstrap, bootstrap.conf: New files.
* doc/Makefile.am, lib/Makefile.am: New files.
* THANKS: Change own email address to cs.ucla.edu. Add Sverre Jarp.
* TODO: Add new tasks to remove porting cruft and
all those buggy scripts.
* configure.ac: Renamed from configure.in.
(AC_PREREQ): Bump to 2.60.
(AC_INIT): Bump version to 1.3.6.
(AC_CONFIG_AUX_DIR): New.
(AC_CONFIG_HEADERS): Move config.h to lib.
Input is now lib/config.hin.
(AM_INIT_AUTOMAKE): Add gnits, dist-shar.
(AC_PROG_CC_STDC): New, replacing AC_PROG_CC.
(AM_PROG_CC_C_O, AC_PROG_RANLIB): New.
(AC_AIX, AC_GNU_SOURCE, AC_MINIX): Remove; gnulib does them now.
(gl_EARLY, gl_INIT): New.
match.c was moved to lib/match.c.
(AC_CHECK_HEADERS_ONCE): Replace AC_CHECK_HEADERS. Don't check
for sys/utime.h or utime.h.
(AC_CHECK_FUNCS_ONCE): Replace AC_CHECK_FUNCS. Check for fchmod
and fchown, not utime.
(AC_REPLACE_FUNCS): Remove; rpmatch is now done by gnulib.
(AC_CONFIG_FILES): Add doc/Makefile, lib/Makefile.
* bits.c: Use the more-usual form for copyright notices in source code.
* deflate.c: Likewise.
* gzip.c: Likewise.
* gzip.h: Likewise.
* inflate.c: Likewise.
* lzw.h: Likewise.
* revision.h: Likewise.
* tailor.h: Likewise.
* trees.c: Likewise.
* unpack.c: Likewise.
* unzip.c: Likewise.
* util.c: Likewise.
* crypt.c (dummy): Add decl so that pedantic compilers won't
complain about an empty file.
* gzip.c (license_msg): Use more-modern wording.
Include fcntl-safer.h, openat.h, stat-macros.h, stat-time.h.
Simply include <dirent.h> if !NO_DIR, removing a rats-nest of
#ifdefs.
Simply include <utimens.h> if !defined NO_UTIME, removing a
another rats-nest of #ifdefs.
(DIR_OPT, TIME_OPT): Remove.
(_D_EXACT_NAMLEN): Renamed from NAMLEN. All uses changed.
(S_ISDIR, S_ISREG, O_BINARY, O_CREAT, O_EXCL, S_IRUSR, S_IWUSR):
Remove; gnulib now does this.
(RETSIGTYPE): Remove; Autoconf does this.
(program_name): Renamed from progname, for compatibility with gnulib.
All uses changed.
(time_stamp): Now struct timespec, not time_t. All uses changd.
(remove_oftime): Now volatile.
(reset_times): Remove; now done by futimens.
(usage): Remove.
(try_help): New function.
(help, license): Don't output date as part of version.
A version number suffices.
(help): Redo help message to match style of coreutils etc.
(version): Don't bother printing compile-time configuration info
like STDC_HEADERS.
(main): Don't assume strlen (argv[0]) < INT_MAX (!).
On usage errors, suggest --help without outputting all the help.
(main, do_list): Remove unnecessary casts.
(treat_stdin, treat_file, get_method, copy_stat):
Support sub-second time stamp resolution.
(treat_file, copy_istat): Close some race conditions if files are
renamed as we read or write them.
(treat_file): Do not attempt to reset the access times of
directories that we read.
(open_and_stat, open_input_file): New functions.
(do_stat, get_istat): Remove; most of the contents went to these new
functions.
(make_ofname): Don't use WARN, as it affects exit status.
(get_method): When the original file name was truncated,
restore from its base name, not from its full name.
(do_list): Avoid undefined behavior with out-of-range time stamps.
ctime, for example, cannot be invoked on arbitrary time stamps safely,
since it might overrun an internal buffer. Do not assume that
localtime succeeds.
(copy_stat): Do not remove input file; that's now the caller's
responsibility. This avoids a problem if there is a write error
when the caller closes the output file.
(treat_dir): New arg FD, to avoid a race condition. All uses changed.
(remove_output_file): New function.
(abort_gzip): Use it.
(abort_gzip_signal): New function, which is async-signal-safe.
Exit with the signal that we got.
* gzip.h (program_name, time_stamp, abort_gzip): Adjust decls to
match gzip.c changes.
* inflate.c (huft_build): Return 2 if null input.
* tailor.h (HAVE_UTIME): Do not define; gnulib does this now.
(OPEN): Use open_safer, not plain open.
* unlzh.c (NPT): Set to 1<<TBIT, not to the maximum of NT and NP.
(make_table): Report an error if 1<<tablebits < nextcode.
(read_pt_len): Report an error if 16 < c.
* unpack.c (read_tree): Report an error if the tree has too many
leaves while reading it. Fix off-by-one error in final check.
* util.c: Include <xalloc.h>, for xalloc_die decl.
(gzip_base_name): Renamed from base_name, so we don't collide
with gnulib. All uses changed.
(add_envopt): Use xstrdup instead of xmalloc+strcpy.
Use xcalloc rather than calloc + check.
(gzip_error): Renamed from error, so we don't collide with gnulib.
All uses changed.
(xalloc_die): New function.
(xmalloc): Remove; no longer needed.
* zip.c (zip): Watch for time stamp overflow; the old code
mishandled negative time stamps.
* gzexe.in: Add support for --help, --version, --.
Don't call basename or sed if we can avoid it.
* zdiff.in: Likewise.
* zforce.in: Likewise.
* zgrep.in: Likewise.
* zless.in: Likewise.
* zmore.in: Likewise.
* znew.in: Likewise.
* zdiff.in: Protect against file names beginning with "-".
* zmore.in: Likewise.
* zgrep.in: Use printf rather than echo, to avoid problems with
leading "-" and backslash. Return status of subsidiary grep.
* zless.in: Add copyright notice.
* zless.1: We now pass "--" to LESSOPEN.
(BUGS): Mention that input file arguments are required.
Add copyright notice.
* COPYING: Update to current version.
* Makefile.am (SUBDIRS): New macro.
(AUTOMAKE_OPTIONS): Remove; now done in configure.ac.
(M4DIR, ACINCLUDE_INPUTS): Remove.
(EXTRA_DIST): Remove getopt.h.
(gzip_SOURCES): Remove getopt.c, getopt1.c, yesno.c.
(gzip_LDADD): Change from @LIBOBJS@ to lib/libgzip.a.
(AM_MAKEINFOFLAGS, info_TEXINFOS, gzip_TEXINFOS, ASCPP, LN_S):
(match.$(OBJEXT)): Move to subdirectory makefiles.
(.in): Substitute @VERSION@, too.
(check-local): New rule.
(MOSTLYCLEANFILES): Add _match.S.
* doc/gzip.texi: Renamed from gzip.texi. Change to GNU FDL
without invariant sections or cover texts. Don't put
version number or date into sample gzip -h output.
* lib/match.c: Renamed from match.c. Add ia64 version
written by Sverre Jarp (HP Labs).
* INSTALL: Remove from CVS; now created automatically by
the bootstrap script.
* Makefile.in: Likewise.
* aclocal.m4: Likewise.
* config.h.in: Likewise.
* configure: Likewise.
* depcomp: Likewise.
* fdl.texi: Likewise.
* getopt.c: Likewise.
* getopt.h: Likewise.
* getopt1.c: Likewise.
* gzip.doc: Likewise.
* gzip.info: Likewise.
* install-sh: Likewise.
* mdate-sh: Likewise.
* missing: Likewise.
* mkinstalldirs: Likewise.
* rpmatch.c: Likewise.
* stamp-vti: Likewise.
* texinfo.tex: Likewise.
* version.texi: Likewise.
* yesno.c: Likewise.
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