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61 Commits

Author SHA1 Message Date
Tim Kientzle
d18eca7d48 Update some internal comments about the --no-same-permissions option. 
Thanks to: Kris Kennaway for doing some gtar research for me.
 2004-06-15 07:16:44 +00:00
Tim Kientzle
4150562c7b As near as I can tell, --no-same-permissions is a no-op in 
gtar, so that makes it easy to implement.

Required by: audio/timidity port
Thanks to: Kris Kennaway
 2004-06-15 06:44:41 +00:00
Tim Kientzle
d2286340c9 Oops. bsdtar's old -X option didn't take an argument; the new 
(gtar-compatible) one does require an argument.
 2004-06-15 06:24:54 +00:00
Tim Kientzle
b7ec47bb9f Add gtar-compatible -X/--exclude-from 2004-06-15 05:55:41 +00:00
Tim Kientzle
b9d38fa25a Fix build. 2004-06-15 01:51:45 +00:00
Tim Kientzle
24220f2890 Rename -X to --one-file-system, as GNU tar uses -X for 
something else.  I would really like a short option for
this, but all of the obvious ones conflict with something else.
 2004-06-15 00:28:34 +00:00
Tim Kientzle
5a57a7f095 Clean up usage message(s): 
* Usage goes to stderr, not stdout
  * Use correct argument markup
  * bsdtar --help  no longer exits with an error return code
  * ensure that the word "bsdtar" appears in the first
    line output from "bsdtar --help" (even if the program is
    invoked as "tar")

In particular, scripts can now test for the presence of bsdtar.
For example, in /bin/sh:

if (tar --help 2>&1 | grep bsdtar >/dev/null 2>&1) then \
          echo bsdtar; else echo not bsdtar; fi
 2004-06-15 00:07:23 +00:00
Tim Kientzle
c066ba2f01 Oops: gtar's --dereference should be a synonym for bsdtar's -L, not -H. 
Pointed out by: devel/nspr port
Thanks to: Kris Kennaway
 2004-06-11 01:35:56 +00:00
Tim Kientzle
a85e1b56bb Set program exit value to 1 if there are any of various errors when 
creating an archive.

Pointed out by: Failure to complain when building certain broken packages
(Thanks again to Kris Kennaway for finding this!)
 2004-06-07 07:19:04 +00:00
Tim Kientzle
af2ef563dd Fix the symlink-detection code. Don't squawk if we're just replacing 
an existing symlink (as might happen if you extract an archive twice).
Also, if we remove the offending link, then we've removed the problem
and can safely go forward with the extraction.

Pointed out by: print/adobe-cmaps port (whose distfile has
	duplicate entries for the same symlinks)
Thanks to: Kris Kennaway (for using ports as a testbed for bsdtar)
 2004-06-07 04:10:43 +00:00
Tim Kientzle
a55bfb25e7 The --include='pattern' option is the natural counterpart to 
--exclude='pattern'.

I should have added this a long time ago, since it's so useful for testing.
In particular, it allows me to select a few entries from a troublesome
archive so that I can easily focus my debugging efforts:
   bsdtar -czf new.tgz --include='*foo*' @old.tgz
 2004-06-07 03:49:48 +00:00
Tim Kientzle
b5642237fc Ooops! Previous commit added an over-zealous error check. 
It is, in fact, perfectly legal to not specify a compression when
writing an archive. <sigh>
 2004-06-07 03:38:17 +00:00
Tim Kientzle
e1f5ccf6fb If -b is specified, then force full padding for the last block. 2004-06-07 03:19:57 +00:00
Tim Kientzle
2225b76daf Per style(9), don't use double spaces in expressions. 
Pointed out by: njl, des.
 2004-06-07 03:16:18 +00:00
Tim Kientzle
5251608d94 Pointy hat: sticky bit 't' or 'T' is shown over IXOTH bit, not IXGRP. <sigh> 2004-06-03 23:43:40 +00:00
Tim Kientzle
755e3f9b2e Improve help handling: 
* --help produces long help message on systems with getopt_long
   * -h with no other options also produces long help message
     (If a mode is specified, -h has its usual meaning.)
 2004-06-02 21:01:27 +00:00
Tim Kientzle
e47b3d7a25 Both "foo/" and "foo" should match "foo/bar", so strip 
trailing '/' characters on include patterns for extraction.

Pointed out by: games/quakeforge port (thanks to Kris!)
 2004-06-02 07:23:54 +00:00
Tim Kientzle
e5572b4b7c Correction: -h should be a synonym for -L, not -H. 
(as specified by Linux Standards Base, GNU tar, and 4.4BSD documentation)
 2004-05-31 20:22:41 +00:00
Tim Kientzle
de10ed4154 Permit (but ignore) -Z with -x or -t, now that libarchive 
recognizes and decompresses .Z format.
 2004-05-30 00:09:43 +00:00
Tim Kientzle
f0e6a2b96d Minor corrections to error handling and user notifications: 
* Move format/compression reporting to end of output, since
  we don't always know the input format until then.
* Set bsdtar exit value to 1 if any file could not be restored.
* Generate gtar-style warning when stripping leading '/' characters.
* Warn when removing symlinks.
 2004-05-27 04:35:36 +00:00
Tim Kientzle
8df3c224c0 Provide framework for exiting with non-zero value on non-critical errors. 2004-05-27 04:30:59 +00:00
Tim Kientzle
26eddc7f41 Add --no-same-owner as a synonym for -o. 
Note that bsdtar's -o (which follows SUSv2) is not the same as GNU tar's -o.
In GNU tar, -o and --no-same-owner are not synonyms.

Pointed out by: Kris Kennaway (required by xpenguins port)
 2004-05-22 17:49:54 +00:00
Tim Kientzle
c5ce4977e6 Add --dereference as a synonym for -H 
Pointed out by: Kris Kennaway (unbreaks nspr port build)
 2004-05-21 18:40:32 +00:00
Tim Kientzle
04e2d02e20 Default is to restore timestamps, even when operating as root. <sigh> 2004-05-19 01:21:11 +00:00
Tim Kientzle
873e38290a Fix a segfault when looking up a non-existent group. 2004-05-18 23:40:25 +00:00
Tim Kientzle
656e70b49a Accept (but ignore) GNU tar's -B option. bsdtar never 
needs it, but it does no harm for people to specify it.
 2004-05-18 17:16:55 +00:00
Tim Kientzle
a25502627d Set errno to 0 before calling getpwuid/getgrgid, so that error 
messages will be displayed only when there is, in fact, an error.
 2004-05-17 18:29:12 +00:00
Tim Kientzle
9d77c5f29c Speed up safe_fprintf by copying to a temp buffer, then writing 
blocks at a time, rather than using putc().
 2004-05-17 07:35:52 +00:00
Tim Kientzle
088bdb251d Propagate struct bsdtar down into a lot more places. 
Move global progname variable into struct bsdtar.
 2004-05-17 05:44:53 +00:00
Tim Kientzle
7283cd6959 Refactor name caching to use a common piece of code for uname_cache and 
gname_cache.  Cache negative lookups to dramatically improve performance
building archives containing nonexistent uid/gid.
 2004-05-17 05:02:39 +00:00
Tim Kientzle
4a07f42b98 Make symlink protection a bit more useful: 
* Remove terminal symlinks so they can be replaced.
  * If -U, remove intermediate symlinks as well
  * Otherwise, refuse the extraction
 2004-05-17 03:33:06 +00:00
Tim Kientzle
dcec34670d Update manpage to track new security features. 2004-05-17 03:19:31 +00:00
Tim Kientzle
81f3488f97 Add --unlink and --unlink-first synonyms for -U 
Make indentation of tar_longopts array more consistent.
 2004-05-05 21:06:37 +00:00
Tim Kientzle
bf0c356cdf Contrariwise, Linux sys/stat.h doesn't define mode_t and friends, 
even though POSIX requires it.  <sigh>
 2004-05-04 21:40:09 +00:00
Tim Kientzle
6e8b30b778 Include local copies of fts.c and fts.h to be used ONLY on non-FreeBSD 
systems.  The fts.h here is an exact copy of include/fts.h (except for
an initial explanatory comment and the revision tags, of course).  The
fts.c here is slightly modified from lib/libc/gen/fts.c so it can
compile correctly on non-FreeBSD systems.
 2004-05-04 17:21:01 +00:00
Tim Kientzle
9644b0783f For portability, don't rely on libc's strmode(3). <sigh> 2004-05-03 21:05:59 +00:00
Tim Kientzle
ce722a01be Correct copy/paste error in Linux nodump support. 
Thanks to: Juergen Lock for his continuing patience
while I botch his patches.
 2004-05-03 16:56:42 +00:00
Tim Kientzle
f1fe72c1cc Style: Use single tab after #define 2004-05-02 22:58:18 +00:00
Tim Kientzle
732db834d2 More of Juergen Lock's patches for Linux. 
(fflags support on Linux, nanosecond timestamp portability, enable
64-bit file offsets)
 2004-05-02 18:10:35 +00:00
Tim Kientzle
020287607f A security issue: An archive containing a symlink to another 
directory, then a file with that symlink as a prefix can drop a file
outside of the current directory, which can be a security hole.

Plug this hole by refusing to extract files if a prefix of the
pathname is a symlink.  The -P option disables this check.
 2004-05-02 00:43:02 +00:00
Tim Kientzle
6c6b3d9aa5 -U is now implemented. (It's been recognized by bsdtar for a while; 
now libarchive actually supports the underlying request.)
 2004-04-29 05:22:13 +00:00
Tim Kientzle
d7837b06fe Refuse to extract entries with '..' in pathname. 
Pointed out by: David Schultz
 2004-04-28 18:53:07 +00:00
Tim Kientzle
0c27da5f82 Remove information about specific formats; replace with a 
reference to libarchive-formats(5).
 2004-04-28 04:43:57 +00:00
Tim Kientzle
749029a437 Update write.c to follow recent API changes to libarchive. 
Also, bump up the default copy buffer from 8k to 64k
to improve performance.
 2004-04-26 23:39:17 +00:00
Tim Kientzle
7e02198e95 Fix username/groupname cache so it returns a name that 
was just looked up by get{pw,gr}id().  Otherwise, it
returns a NULL name unless it's already in the cache.

Credit to Juergen Lock.
 2004-04-23 16:33:51 +00:00
Tim Kientzle
fe44171ebd Eliminate a redundant call to archive_entry_set_pathname() 2004-04-21 05:16:28 +00:00
Tim Kientzle
97c4c5308b Allow brave souls to install bsdtar as the 
default "tar" command by defining WITH_BSDTAR.

Note: "gtar" and "bsdtar" commands both exist regardless.
 2004-04-19 22:09:04 +00:00
Tim Kientzle
cc52bf3428 --help is only supported if you have getopt_long(). 
This allows bsdtar to compile on FreeBSD 4.x.
 2004-04-16 03:50:04 +00:00
Tim Kientzle
855e109158 As suggested by Julian Elischer, use a self-sizing hash 
table for the hardlink cache.  This dramatically improves
performance when archiving millions of hardlinked files.

While I'm here, clean up some style bugs (per Bruce Evans)
and clarify some comments.
 2004-04-15 22:37:54 +00:00
Tim Kientzle
17834543c8 A simple cache of uid->uname lookups and gid->gname lookups eliminates 
almost 1/2 of the CPU time required to create an uncompressed archive
and makes a noticable reduction in wallclock time.
 2004-04-14 00:40:54 +00:00