make it work as a tool

Add zfgrep that fell off from last update

Added zless(1) - comes in the lastest version of zmore(1) from OpenBSD
(OKed by tron@)

branches: 1.16.2; 1.16.4; 1.16.8;
Add a few explicit casts for sign mismatches.

remove most of the remaining HAVE_GCC tests that are always true in
the modern world.

Add lzma (.xz) support. Somehow this does not decode after the first read yet.

branches: 1.13.4;
Enable WARNS=4 by default for usr.bin, except for:
awk bdes checknr compile_et error gss hxtool kgetcred kinit
klist ldd less lex locale login m4 man menuc mk_cmds
mklocale msgc openssl rpcgen rpcinfo sdiff spell ssh
string2key telnet tn3270 verify_krb5_conf xlint

branches: 1.12.2; 1.12.4; 1.12.6; 1.12.12;
Wrap compiler-specific flags with HAVE_GCC and HAVE_PCC as necessary. Add a few flags for PCC.

branches: 1.11.12;
Add new Makefile knob, USE_FORT, which extends USE_SSP by turning on the
FORTIFY_SOURCE feature of libssp, thus checking the size of arguments to
various string and memory copy and set functions (as well as a few system
calls and other miscellany) where known at function entry. RedHat has
evidently built all "core system packages" with this option for some time.

This option should be used at the top of Makefiles (or Makefile.inc where
this is used for subdirectories) but after any setting of LIB.

This is only useful for userland code, and cannot be used in libc or in
any code which includes the libc internals, because it overrides certain
libc functions with macros. Some effort has been made to make USE_FORT=yes
work correctly for a full-system build by having the bsd.sys.mk logic
disable the feature where it should not be used (libc, libssp iteself,
the kernel) but no attempt has been made to build the entire system with
USE_FORT and doing so will doubtless expose numerous bugs and misfeatures.

Adjust the system build so that all programs and libraries that are setuid,
directly handle network data (including serial comm data), perform
authentication, or appear likely to have (or have a history of having)
data-driven bugs (e.g. file(1)) are built with USE_FORT=yes by default,
with the exception of libc, which cannot use USE_FORT and thus uses
only USE_SSP by default. Tested on i386 with no ill results; USE_FORT=no
per-directory or in a system build will disable if desired.

apply -Wno-pointer-sign with GCC4.

WARNS=3: add some const poisoning, and sort out local variable
definitions shadowing other variables.

Pass storage for file names into the file_compress and file_uncompress
functions, so that we don't run the risk of leaking memory. Remove a global
variable that's no longer needed.

branches: 1.8.2;
port simonb's bzip2 support.
misc cleanups.

Add a BSD licensed zgrep written by me.
Much nicer than the old one, if I may say so.

Thanks go to atatat for testing and suggestions.

fix an error in the previous

zdiff is also zcmp (from wiz)

install gzexe, zdiff, zforce, zmore and znew scripts and manual pages.

XXX: now only missing zgrep.

remove one extra backslash from MLINKS

install gunzip, zcat & gzcat links.

branches: 1.1.1;
Initial revision

Remove typeset line, since sh(1) does not support it.
Closes PR 25403 by Jukka Salmi.

branches: 1.2.4;
Add RCS Id.

branches: 1.1.1;
Initial revision

No argument necessary after .Nm; add missing comma to enumeration.

Add RCS Id.

branches: 1.1.1;
Initial revision

update my email address.

branches: 1.31.10;
Add lzip support to gzip based on the example lzip decoder.

branches: 1.30.2; 1.30.4;
Add gunzip and zcat to the NAME section as well

add SIGINFO support.

update copyright strings.

Document --keep. From Timo Buhrmester <fstd.lkml@gmail.com> on netbsd-docs.

Use more macros while here.

branches: 1.26.2;
port across the change from freebsd rev 290024:

In gunzip(1), treat trailing garbage as a warning and not an error. This
allows scripts to distinguish it between real fatal errors, for instance a
CRC mismatch.

Update manual page for the behavior change.

PR: bin/203873
Submitted by: Eugene Grosbein <eugen grosbein net>
MFC after: 2 weeks

Document xz decompression support better. From Joachim Henke on netbsd-docs.

do not use directory paths present in gzip files with the -N flag,
similar to the problem reported in pigz.

branches: 1.23.4;
Merge riastradh-drm2 to HEAD.

Use Mt for email addresses.

branches: 1.21.2; 1.21.4; 1.21.8; 1.21.10; 1.21.12; 1.21.16;
cross reference xz.1

branches: 1.20.4;
note that -n also stops the timestamp from being output.
bump date.

branches: 1.19.2; 1.19.4; 1.19.6; 1.19.12;
remove clause #3 from my license where there are no other
copyright holders involved.

branches: 1.18.20; 1.18.22;
Fix typo reported by David A. Holland in PR 31422.

- the default compression level in GNU gzip is 6 not 5; copy that default.
- note that -t/-l/-v & bzip2 is not handled the same as gzip in a comment.

crank version.

significantly rototill. don't use the high-level gzio functions
anymore, use the low-level inflate()/deflate() directly. this
allows support file-type detection on stdin; now can decompress
.Z and .bz2 files fed to stdin (fixes PR#25192) additionally it
makes -v work with stdin or stdout (fixes PR#25215.)

(with these changes, we no longer need gzopenfull(3) in libz.)

thanks to martin@ for the code gzip.c:gz_uncompress() is based on.

branches: 1.14.2;
Mention compress(1) support, and add bzip2(1) and compress(1) to SEE ALSO.
Bump date.

Sort sections. New sentence, new line. Bump date.

implement $GZIP handling.

.P -> .Pp (typo fix).

port simonb's bzip2 support.
misc cleanups.

.Pp\n.Pp -> .Pp.

--long-options are supported

New sentence, new line; avoid &; uppercase CRC.

bump .Dd

- document --list
- use unsigned char's that are used in unsigned calculations later.

Sort options; no spaces at EOL; limit line lengths.
Fix one typo.

- make this WARNS=3 happy
- add RCSID()
- document the version number

fix markup of --suffix option
add zlib(3) xref also to SEE ALSO

branches: 1.1.1;
Initial revision

Fix typo in previous

Don't try to set non-POSIX struct stat members on tools builds.

Fixes PR/58278 (src/tools/gzip build failed on Cygwin).

oops the #endif was too far down.

Handle not having SIGINFO (Jan-Benedict Glaw)

- -n is the default on SMALL, so accept the flag silently.
- conditionalize TIMESPEC_TO_TIMEVAL
- add nbtool_config.h

bump copyright and version.

PR/57858: Ricardo Branco: Print the full pathname on errors.
from FreeBSD https://github.com/NetBSD/src/pull/25

set file flags after setting other modes

otherwise permission to set modes may be revoked by the flags.
from PR#57855. thanks!

XXX: pullup-all

Pull git commit way-etc-20140221.tar.bz2 by Xin Li from FreeBSD:

Remove unneeded checks for prelen.

In order to determine the type of a compressed file, we have to read
in the first four bytes which may also be important for decompression
purposes, to do that we would pass the buffer that we have already
read in, along with the size of it.

Rename header1 to fourbytes to make that explicit, and remove all
checks for prelen.

branches: 1.118.2;
make siginfo handler print to /dev/tty.

Call check_siginfo() in compression loop to provide SIGINFO compression
progress.
Suggested by mrg@.

Fix previous

Add lzip support to gzip based on the example lzip decoder.

Add -l support for xz files

branches: 1.113.2;
Correct Undefined Behavior in gzip(1)

Unportable left shift reported with MKSANITIZER=yes USE_SANITIZER=undefined:

# progress -zf ./games.tgz tar -xp -C "./" -f -
/public/src.git/usr.bin/gzip/gzip.c:2126:33: runtime error: left shift of 251 by 24 places cannot be represented in type 'int'
100% |****************************************************************************************************************| 44500 KiB 119.69 MiB/s 00:00 ETA


Refactor the following code into something that is more clear
and fix signed integer shift, by casting all buf[] elements to
(unsigned int):

unsigned char buf[8];
uint32_t usize;
[...]
else {
usize = buf[4] | buf[5] << 8 |
buf[6] << 16 | buf[7] << 24;
[...]

New version:

usize = buf[4];
usize |= (unsigned int)buf[5] << 8;
usize |= (unsigned int)buf[6] << 16;
usize |= (unsigned int)buf[7] << 24;

Only the "<< 24" part needs explicit cast, but for consistency make the
integer promotion explicit and clear to a code reader.

Sponsored by <The NetBSD Foundation>

branches: 1.112.2;
now that we are processing SIGINFO write can be interrupted and return
partial results (well, it could before too but it was harder to trigger);
provide write_fully like we have read_fully already.

add SIGINFO support.

update copyright strings.

port across the change from freebsd rev 290024:

In gunzip(1), treat trailing garbage as a warning and not an error. This
allows scripts to distinguish it between real fatal errors, for instance a
CRC mismatch.

Update manual page for the behavior change.

PR: bin/203873
Submitted by: Eugene Grosbein <eugen grosbein net>
MFC after: 2 weeks

Coverity CID 1264915, Via FreeBSD (Xin Li)

When reading in the original file name from gzip header, we read
in PATH_MAX + 1 bytes from the file. In r281500, strrchr() is
used to strip possible path portion of the file name to mitigate
a possible attack. Unfortunately, strrchr() expects a buffer
that is NUL-terminated, and since we are processing potentially
untrusted data, we can not assert that be always true.

Solve this by reading in one less byte (now PATH_MAX) and
explicitly terminate the buffer after the read size with NUL.

do not use directory paths present in gzip files with the -N flag,
similar to the problem reported in pigz.

src is too big these days to tolerate superfluous apostrophes. It's
"its", people!

branches: 1.105.4; 1.105.10; 1.105.16; 1.105.20;
Use __printflike and __dead.

add noreturn atttribute.

Add a few explicit casts for sign mismatches.

recognize .xz suffix

XZ_SUPPORT requires maybe_errx().

Add lzma (.xz) support. Somehow this does not decode after the first read yet.

branches: 1.99.2;
Fix OPT_LIST. -t is not available in SMALL case.

pull across a few changes from the freebsd folks:

http://svn.freebsd.org/changeset/base/213044
- fixes gunzip issues
http://svn.freebsd.org/changeset/base/213927
- fixes various typos and comments

and also an older change to add support for bzip2's "-k" option:
don't delete the input file


thanks!

update version to today.

avoid an overflow in suffix handling, from Xin LI <delphij@delphij.net>.

add "pack" uncompression support, from Xin LI <delphij@delphij.net>

fix sign-compare issues

branches: 1.93.4; 1.93.6; 1.93.10;
WARNS=3

Remove the \n and tabs from the __COPYRIGHT() strings.
Tweak to use a consistent format.

remove clause #3 from my license where there are no other
copyright holders involved.

branches: 1.90.10; 1.90.12;
Apply fix from PR bin/35526 from Xin LI: fix typo in message

branches: 1.89.2;
properly detect when the output fails (eg, full filesystem) and do not
delete the input file. patch from PR#35048.

wrap a long line

End a decompression when trailing garbage is found. It emits a warning
message and causes a non-zero exit status (similar to GNU gzip).
Fixes PR bin/33045.

Abort decompression with an error when EOF is reached on input. The
test output will then be 'NOT OK'. Fixes PR bin/32933.

redo the previous, based on a comment from and reviewed by christos.

redo previous: move the EOF check back into non-dead code so that it
will be used again.

Coverity CID 4073: Delete impossible code.

properly check the return value of read() & pread(). PR#26688.

Remove unhandled H option from getopt() argument.
Describe -l in usage. Both from Igor Sobrado in private mail.

While here, sort options.

Use of ``vflag'' should be protected by #ifndef SMALL.

due to popular demand, don't warn about >4GB files not having their
size correctly stored. PR#32105 among other requests.

apply a patch from onno van der linden in PR#32070 that fixes
these problems:
1) gzip -vt just prints the contents of a .Z file
2) gzip -vt will print OK even if the .gz file is corrupt
3) gzip -vt prints nothing with a .bz2 file
4) gzip can loop endlessly with a corrupt .bz2 file

apply a patch from christian biere:
- if we have an open fd, use it instead and, eg, fstat(2), of the file name
and stat(2).
- signed/unsigned variable fixes
- misc. cleanup

oops. fix previous by keeping the stat() inside #ifndef SMALL. pointed
out by dsl.

in file_compress() always stat() the input file. this patch avoids
reading from uninitialised space as provided by John Hein in PR#28995.

fix signed/unsigned mismatch reported by Christian Biere in PR#31180
using his provided patch.

avoid an infinite loop while decompressing invalid gzip files.
some minor CSE. compare stat return value consistently.

thanks to tron for testing the first change.

Fix numerous uninitalized variables.
Detected with gcc -Wuninitialized.

branches: 1.71.2;
handle partial reads. PR/29484.

Fix parsing of $GZIP so that not to overrun the end of string.
Addesses PR#28779. Fix is slightly different that suggested in the PR
since it fails if $GZIP contains whitespace.

Fixed for PR#28581. If stdin is the input stream, fstat it and check if it's
file. If so, use it's mtime for the mtime in the header. Otherwise use
time(2)'s result instead. Lines up with GNU gzip and RFC 1952 now as well.

Don't abort decompression if there are no bytes in the output buffer
when the end of compressed block (ie the crc) is reached.
(ie when decompressing concatenated zipped files).
Fixes PR bin/27153

Count the output file size modulo 2^32 so that the check against the size
in the compressed file works for files greater than 4GB.
Fixes the fixable part of bin/26907

The last commit slightly increased the size of gzip - I had thought that
all the install media used the 'SMALL' variant, but this is not the case.
Redo the percentage print code to reduce the size to less than the old version.
Fix another fd leakage (didn't call fclose() if ferror() returned non-zero.
Change some maybe_warn() to maybe_warnx() in places I'm sure errno is undefined.
Call mayber_warn() earlier in other paths so that errno might still be valid.
Make the SMALL and NO_BZIP/COMPRESS_SUPPORT options all compile with WARNS=3.

Set the XFL field of the gzip header to indicate maximum compression or
fast compression. Fixes PR bin/26812
Add references the the 3 relevant RFCs

Cast field width computed from pointer diff and ssize_t to int.
Fixes build for amd64 and presumably for our other lp64 ports.

Redo suffix handling so that gunzip xxx.tgx => xxx.tar
Rework logic of gz_{un}compress to make it much less likely to leak fds
(at least 2 non-error paths leaked them!)
Make -S ".xyz" and -S "" both do something sensible.
Make in-situ compression work - only lose the file on error.
Pass an open fd to zopen (renamed zdopen) to avoid fd leakage (was badly borked)
Write header into first 64k output block to writes are aligned.
(more efficient and might avoid some problem with code that doesn't
like receiving partial buffers)
Check file size on compression - double checks against fs full.
Remove some pointless casts, and otherwise simplify some logic.

Instead of placing largish buffers on the stack, use malloc/free.
Fixes compile problem for sun2.

fix "gzip -lv a.gz" after gzip.c 1.46.

another warn -> warnx.

in check_outfile() if the outfile exists and -f was given just delete it.
fixes PR#26251.

fix descriptor leaks on error.

- in gz_uncompress() be sure to do the crc/len recalculation insigned.
fixes PR#26246.
- if crc/len are wrong, be sure to noticed it failed
- in check_suffixes(), be sure not to underrun an array (from yamt)
- don't fail so badly on short header, from and fixes R#26242 (also
from yamt)
- more underrun avoidance in file_uncompress(). fixes PR#26241.

check the suffix of the input file ala GNU gzip, and error about it
unless -f is given. fixes PR#26240

move the crc/len code into their own state's to properly allow the buffer
to be refreshed. re-fixes regress/usr.bin/gzip/concatenated.

- check for trunated input.
- check each gzip-part's length against the original and warn if it's
wrong. fixes part of PR#26233.
- check the input crc32. fixes the rest of PR#26233.

don't assume Z_STREAM_END means end-of-file. fixes PR#26234.

tailing \n is not needed for vwarn().

fix "zcat -f" on normal files. fixes PR#26145

if there are zero bytes to output, this isn't an error. it's probably
a zero length file. don't return an error. this should fix PR#25994.

handle_pathname: if it's stdin, return after handling it, rather than
trying to then process "-" as a file afterwards. fixes PR#25843.

- maybe restore the timestamp
- don't create the output file with "-l"

both from geoff wing with a few mods by me.

explicitly lseek() to offset 10 to read the original name. fixes a
latent bug awoken by rev 1.37 (prior versions always left the fd at
this offset purely by chance.) fixes PR#25824.

- fix "gzip -t" to not output anything by default. PR#25507
- fix any decompression on corrupted gzip files. PR#25508
- ask to overwrite files if we have a tty, rather than failing the
operation. PR#25509.
- clean up maybe_err()/maybe_warn(): use maybe_err() only for fatal
errors. maybe_warn() is for processing errors. this allows
"gzip -d file1.gz file2.gz" to decompress file2.gz even if file1.gz
is corrupted, etc.
- change the internal compressor/decompressor API to return "-1" on
failure, not 0. this allows for 0-sized files to be decompressed
correctly.

WARNS=3: add some const poisoning, and sort out local variable
definitions shadowing other variables.

Pass storage for file names into the file_compress and file_uncompress
functions, so that we don't run the risk of leaking memory. Remove a global
variable that's no longer needed.

Fix a reference to stale storage on the stack - malloc the new file
name when gunzip'ing via strdup(3). Fixes a bug whereby the new
filename would appear as gibberish when verbosely gunzipping.

Fix an off-by-one error when allocating the filename with added suffix,
and properly NUL-terminate the new filename.

It's NULL, not 0, in char * assignments - there are some still to do here.

Always initialise savename. Fix gzip -c core dump on sparc (and probably
others). OK'd by mrg@.

clean up file descriptor handling. don't lose them...

- the default compression level in GNU gzip is 6 not 5; copy that default.
- note that -t/-l/-v & bzip2 is not handled the same as gzip in a comment.

crank version.

- fix "gunzip file.gz"
- fix "gzip <lots of files>"

both reported by tron@.

- properly parse --fast/--best/-1..-9 again. noted by taca@.
- minor clean up.

significantly rototill. don't use the high-level gzio functions
anymore, use the low-level inflate()/deflate() directly. this
allows support file-type detection on stdin; now can decompress
.Z and .bz2 files fed to stdin (fixes PR#25192) additionally it
makes -v work with stdin or stdout (fixes PR#25215.)

(with these changes, we no longer need gzopenfull(3) in libz.)

thanks to martin@ for the code gzip.c:gz_uncompress() is based on.

be sure we don't try to remove an output file we haven't actually created.
(reported by kimmo.)

- completely rewrite print_ratio(). fixes PR#25072 and a few other cases
- print_list() was getting the compressed/uncompressed sizes backwards.

remove a chunk more code with -DSMALL and in the process fix -DSMALL
that was broken in the previous commit (by exposing "fflag".)

Handle files with link count larger than 1 if "-f" option is used. This
is consistent with the old "gzip" and required by "pkgsrc" to implement
"MANZ" properly.

factor out filetype checking code

use off_t instead of ssize_t in a few places.
fix "gzip -l" in -DSMALL (it wasn't doing a stat(2)).

patch from tron@ to convert to using public bz interfaces. simonb says
no reason not to and this fixes PR#24964.

branches: 1.29.2;
shave another 612 bytes off -DSMALL on x86. now x_gzip with -l support
is actually smaller than the older x_gzip without it!

still do argv[0] processing -DSMALL, from tsutsui.
pass the smaller list of options to getopt with -DSMALL.

crank version

remove a bunch more stuff with -DSMALL. now we are about 400 bytes larger
than x_gzip... given we add -l support, time to retire x_gzip/gzip.c.

remove another 3KB or so of text/data on i386 with -DSMALL. now only
about 1.1KB larger than the old x_gzip sources, but includes (required
for sysinst) gzip -l support.

Allow disabling bzip2 (.bz2) and compress (.Z) support
by -DNO_BZIP2_SUPPORT and -DNO_COMPRESS_SUPPORT.
OK'ed by mrg.

minor cleanup.

support decompressing "compress"ed files. from rtr@ with a few minor edits
from me. code in zuncompress liberally borrowed from usr.bin/compress.

use gzopenfull()

void functions need not call return

Homogenize usage messages: make the 'usage' word all lowercase, as this seems
to be the most common practice in our tree.

prepend_gzip: avoid searching beyond this string

Fix off-by-one error in the malloc of the new argv in prepend_gzip().

Fix typo in comment.

implement $GZIP handling.

note that $GZIP support is missing still

allow HAVE_ZLIB_GZOPENFULL to be overriden externally

don't dump core in the face of unknown long options. from cjep@

add some simple -DSMALL support. reduces the size of gzip(1) itself a by
nearly 2.5KB text.

port simonb's bzip2 support.
misc cleanups.

GNU gzip compatibility: don't let "gzip -dc" (zcat) operate on non-gzip
files by default. -f must be used.

- document --list
- use unsigned char's that are used in unsigned calculations later.

support gzip -l -v.

- print totals for --list.
- round down percentages, like GNU gzip does
- use "stdout" not "-", like GNU gzip does
- factor percent calculation code.

begin to start to support --list.

- make this WARNS=3 happy
- add RCSID()
- document the version number

some const-poisoing, depend on bss to set gzipflags[]

delete unused variables

branches: 1.1.1;
Initial revision

add SIGINFO support.

apply a change from Xin LI <delphij@delphij.net> to avoid problems when
reading from pipes. introduced with the multi-part bz2 fixes.

fix support for multi-section bzip2 files, as created by pbzip2.

branches: 1.11.6; 1.11.12;
Remove clause 3 and 4 from TNF licenses

branches: 1.10.16;
Add standard TNF copyright boilerplate.

apply a patch from onno van der linden in PR#32070 that fixes
these problems:
1) gzip -vt just prints the contents of a .Z file
2) gzip -vt will print OK even if the .gz file is corrupt
3) gzip -vt prints nothing with a .bz2 file
4) gzip can loop endlessly with a corrupt .bz2 file

fix signed/unsigned mismatch reported by Christian Biere in PR#31180
using his provided patch.

Fix numerous uninitalized variables.
Detected with gcc -Wuninitialized.

branches: 1.6.2;
The last commit slightly increased the size of gzip - I had thought that
all the install media used the 'SMALL' variant, but this is not the case.
Redo the percentage print code to reduce the size to less than the old version.
Fix another fd leakage (didn't call fclose() if ferror() returned non-zero.
Change some maybe_warn() to maybe_warnx() in places I'm sure errno is undefined.
Call mayber_warn() earlier in other paths so that errno might still be valid.
Make the SMALL and NO_BZIP/COMPRESS_SUPPORT options all compile with WARNS=3.

- fix "gzip -t" to not output anything by default. PR#25507
- fix any decompression on corrupted gzip files. PR#25508
- ask to overwrite files if we have a tty, rather than failing the
operation. PR#25509.
- clean up maybe_err()/maybe_warn(): use maybe_err() only for fatal
errors. maybe_warn() is for processing errors. this allows
"gzip -d file1.gz file2.gz" to decompress file2.gz even if file1.gz
is corrupted, etc.
- change the internal compressor/decompressor API to return "-1" on
failure, not 0. this allows for 0-sized files to be decompressed
correctly.

significantly rototill. don't use the high-level gzio functions
anymore, use the low-level inflate()/deflate() directly. this
allows support file-type detection on stdin; now can decompress
.Z and .bz2 files fed to stdin (fixes PR#25192) additionally it
makes -v work with stdin or stdout (fixes PR#25215.)

(with these changes, we no longer need gzopenfull(3) in libz.)

thanks to martin@ for the code gzip.c:gz_uncompress() is based on.

backout previous. fix the bug it inspired instead. we will want this
version of the code when doing file-type detection.

patch from tron@ to convert to using public bz interfaces. simonb says
no reason not to and this fixes PR#24964.

branches: 1.1.2;
port simonb's bzip2 support.
misc cleanups.

PR/58233: RVP: Fix lzip dictionary size calculation

PR/58223: RVP: Don't write to stdout when testing.

Pull git commit way-etc-20140221.tar.bz2 by Xin Li from FreeBSD:

Remove unneeded checks for prelen.

In order to determine the type of a compressed file, we have to read
in the first four bytes which may also be important for decompression
purposes, to do that we would pass the buffer that we have already
read in, along with the size of it.

Rename header1 to fourbytes to make that explicit, and remove all
checks for prelen.

branches: 1.7.2;
usr.bin: remove unnecessary lint comment CONSTCOND

Since 2021-01-31, lint no longer warns about 'do ... while (0)'.

No functional change.

branches: 1.6.2; 1.6.4; 1.6.6;
use the data size in case stdout was a pipe (M. Levinson)

fix typo.

handle stdin with header partially read.

remove debugging.

Fix printf conversion of off_t for 32 bit hosts (fix i386 build)
(%td is for ptrdiff_t)

Add lzip support to gzip based on the example lzip decoder.

Pull git commit way-etc-20140221.tar.bz2 by Xin Li from FreeBSD:

Remove unneeded checks for prelen.

In order to determine the type of a compressed file, we have to read
in the first four bytes which may also be important for decompression
purposes, to do that we would pass the buffer that we have already
read in, along with the size of it.

Rename header1 to fourbytes to make that explicit, and remove all
checks for prelen.

branches: 1.3.14;
add SIGINFO support.

pull across a few changes from the freebsd folks:

http://svn.freebsd.org/changeset/base/213044
- fixes gunzip issues
http://svn.freebsd.org/changeset/base/213927
- fixes various typos and comments

and also an older change to add support for bzip2's "-k" option:
don't delete the input file


thanks!

branches: 1.1.2; 1.1.4;
add "pack" uncompression support, from Xin LI <delphij@delphij.net>

PR/58223: RVP: Don't write to stdout when testing.

branches: 1.8.2; 1.8.10;
Add -l support for xz files

branches: 1.7.2; 1.7.4;
add SIGINFO support.

remove clauses 3, 4

add copyright

fix non-literal format strings

branches: 1.3.2;
make this work:
- forgot to account for prelen in the input length
- deal with EOF properly

- remove unused call
- read headers separately
- print error id.

Add lzma (.xz) support. Somehow this does not decode after the first read yet.

Consistently use -- for all programs called. Drop some redundant flags
for the no file argument case.

Refactor zdiff and extend functionality to the common suffixes for bzip2
and xz.

s/compress/gzip/, our compress is not the backend for gzip.
Noted by hubertf.

branches: 1.2.2;
Add RCS Id.

branches: 1.1.1;
Initial revision

Sort SEE ALSO, fix an xref.

Refactor zdiff and extend functionality to the common suffixes for bzip2
and xz.

Use more macros.

Add RCS Id.

branches: 1.1.1;
Initial revision

Add RCS Id.

branches: 1.1.1;
Initial revision

Add RCS Id.

branches: 1.1.1;
Initial revision

zgrep(1): suppress the prefixing of filename on output when only
one file is specified to match the grep(1)'s output.

branches: 1.8.4;
fferentiate zegrep and zfgrep by their basename only, so they can be
invoked with a pathname (ie, /usr/bin/z{e,f}grep).

OK wiz@

branches: 1.7.2; 1.7.24;
2-clause my license.

branches: 1.6.2;
grep "-H" option (print the filename for each match) always prints
filenames whether "-h" option (suppress filenames when multiple files
are searched) is speficied or not.

Make zgrep "-h" option actually works with using "-H" option only
when "-h" is not specified.

branches: 1.5.6; 1.5.8; 1.5.16; 1.5.20;
- fix --.
- fix -e.
- fix patterns starting with -.
- fix "missing argument" message.

branches: 1.4.2; 1.4.4; 1.4.6;
use "zcat -fq" not just plain "zcat". this lets zgrep work on non
compressed files (as reported by simonb) as well as not printing
random warnings that zgrep isn't ready to handle.

quote pattern when passing to grep, so that paterns containing
spaces would be handled properly

fixes PR bin/25345 by Arto Selonen

branches: 1.2.2;
Add RCS Id.

Add a BSD licensed zgrep written by me.
Much nicer than the old one, if I may say so.

Thanks go to atatat for testing and suggestions.

2-clause my license.

branches: 1.2.20; 1.2.22;
Use better section header. From YOMURA Masanori in private mail.

Add a BSD licensed zgrep written by me.
Much nicer than the old one, if I may say so.

Thanks go to atatat for testing and suggestions.

fix == compatibility problem

Added zless(1) - comes in the lastest version of zmore(1) from OpenBSD
(OKed by tron@)

branches: 1.3.34; 1.3.50; 1.3.52; 1.3.56;
s/compress/gzip/, our compress is not the backend for gzip.
Noted by hubertf.

branches: 1.2.2;
Add RCS Id.

branches: 1.1.1;
Initial revision

Added zless(1) - comes in the lastest version of zmore(1) from OpenBSD
(OKed by tron@)

branches: 1.3.40; 1.3.56; 1.3.58; 1.3.62;
Uppercase CRT.

Add RCS Id.

branches: 1.1.1;
Initial revision

Our gzip does not have "-o" option.
So replace -o with >, then znew can now work again.

branches: 1.2.6; 1.2.18; 1.2.20; 1.2.32;
Add RCS Id.

branches: 1.1.1;
Initial revision

Add RCS Id.

branches: 1.1.1;
Initial revision

Do proper input validation without penalizing performance.

set errno on overflow return.

provisional fix for CVS-2011-2895, buffer overflow when uncompressing

pull across a few changes from the freebsd folks:

http://svn.freebsd.org/changeset/base/213044
- fixes gunzip issues
http://svn.freebsd.org/changeset/base/213927
- fixes various typos and comments

and also an older change to add support for bzip2's "-k" option:
don't delete the input file


thanks!

fix sign-compare issues

branches: 1.6.6; 1.6.16; 1.6.28; 1.6.30; 1.6.32; 1.6.36;
apply a patch from onno van der linden in PR#32070 that fixes
these problems:
1) gzip -vt just prints the contents of a .Z file
2) gzip -vt will print OK even if the .gz file is corrupt
3) gzip -vt prints nothing with a .bz2 file
4) gzip can loop endlessly with a corrupt .bz2 file

branches: 1.5.2;
Redo suffix handling so that gunzip xxx.tgx => xxx.tar
Rework logic of gz_{un}compress to make it much less likely to leak fds
(at least 2 non-error paths leaked them!)
Make -S ".xyz" and -S "" both do something sensible.
Make in-situ compression work - only lose the file on error.
Pass an open fd to zopen (renamed zdopen) to avoid fd leakage (was badly borked)
Write header into first 64k output block to writes are aligned.
(more efficient and might avoid some problem with code that doesn't
like receiving partial buffers)
Check file size on compression - double checks against fs full.
Remove some pointless casts, and otherwise simplify some logic.

- fix "gzip -t" to not output anything by default. PR#25507
- fix any decompression on corrupted gzip files. PR#25508
- ask to overwrite files if we have a tty, rather than failing the
operation. PR#25509.
- clean up maybe_err()/maybe_warn(): use maybe_err() only for fatal
errors. maybe_warn() is for processing errors. this allows
"gzip -d file1.gz file2.gz" to decompress file2.gz even if file1.gz
is corrupted, etc.
- change the internal compressor/decompressor API to return "-1" on
failure, not 0. this allows for 0-sized files to be decompressed
correctly.

significantly rototill. don't use the high-level gzio functions
anymore, use the low-level inflate()/deflate() directly. this
allows support file-type detection on stdin; now can decompress
.Z and .bz2 files fed to stdin (fixes PR#25192) additionally it
makes -v work with stdin or stdout (fixes PR#25215.)

(with these changes, we no longer need gzopenfull(3) in libz.)

thanks to martin@ for the code gzip.c:gz_uncompress() is based on.

branches: 1.2.2;
Fix mismatched type error in fropen() usage by converting return
type of zread() from ssize_t to int.

support decompressing "compress"ed files. from rtr@ with a few minor edits
from me. code in zuncompress liberally borrowed from usr.bin/compress.