Only supports "deflate" and "none" compression for now.
Also, add a few clarifications to the archive_read.3 manpage as
requested by William Dean DeVries.
for libarchive error messages. Mostly, this
avoids a portability headache related to
copying va_list arguments (some FreeBSD 5
platforms require va_copy; FreeBSD 4 doesn't
support va_copy at all). It also dramatically reduces the
size of libarchive for embedded applications:
a minimal "untar" program using libarchive can now be
under 64k statically linked (as opposed to ~100k
using library *printf() functions).
MFC after: 14 days
* Reference-count the directory data so that
we don't leak memory.
* Correctly step through the directory records
(skipping unrecognized extensions)
* Use better defaults for file modes
* Sort directory entries by offset of the end of the file
rather than the beginning of the file. This fixes a
lot of "out-of-order" problems with zero-length files,
in particular.
* Style fixes, remove some debug code, add some error messages.
This seems to be able to extract a TOC and extract files from
the couple of ISO images I've tested it with.
Treat this as experimental proof-of-concept code for the
moment. There are still a bunch of debug messages (there
are a few oddities in ISO9660 that I haven't yet figured
out how to handle), a lot of bugs to be addressed (this
code leaks memory very badly), and a lot of missing features (no
Rockridge support, in particular). I'd appreciate
feedback from anyone who understands ISO9660 format
better than I do. ;-)
Suggested by: Robert Watson
the regular ustar entry. The old code sometimes created
a too-long name that overflowed the ustar fields and triggered
an internal assertion failure. This version should be more
robust.
Thanks to: Michal Listos
Fixes: bin/74385
MFC after: 15 days
ustar fields. Later, we're going to permit numeric extensions
for these fields, so we can support large values here. In particular,
this allows GNU tar to correctly extract such entries even
though it doesn't support the pax extended attributes.
Note: r1.18 and r1.17.2.1 of this file allowed similar treatment
of the uid/gid fields.
Thanks to: Ben Mesander
improves the recognition of hardlink entries
with/without bodies (which is implemented through
a look-ahead that uses the bid function).
MFC after: 7 days
device numbers. In particular, this should fix
a bug where archiving a device node with a very
large minor number would sometimes overflow and
corrupt the major number.
Thanks to: Ben Mesander
MFC after: 7 days
regular 'ustar' entry, use narrow-character version,
not wide-character version, as the ustar entry always
uses the narrow-character filename.
Thanks to: Michal Listos
Inspired by, but doesn't fix: bin/74385
the the pax attributes, I shouldn't try using the public
API for finishing out the attribute entry, either.
This also removes some old dubious state manipulations.
because the code was using the external API
(archive_write_data) and assuming internal
error-return conventions. Use the internal
API for writing data.
Thanks to: Joe Marcus Clarke
file. In particular, this allows bsdtar to append (-r) to
an empty file.
Thanks to: Ryan Sommers
While I'm here, straighten out a misleading comment about GNU-compatible
sparse file handling.
probably means it also requires a .so version
bump. Defer it until I finish some related
work on cleaning up error returns throughout
the library.
Thanks to: Conrad J. Sabatier
1. The correct cutoff for large uid/gid handling is 1<<18, not 1<<20.
2. Limit the uid/gid in the 'x' extension header (where numeric extensions
are not permitted) to 1<<18, but use the correct value in the regular
header (where numeric extensions are permitted).
Thanks to: Dan Nelson
MFC after: 3 days
denote a directory. Unfortunately, in the presence of GNU or POSIX
extensions, this code was checking the truncated filename stored in the
regular header rather than the full filename stored in the extended
attribute. As a result, long filenames with '/' in just the right
position would trigger this check and be erroneously marked as
directories. Move the check so it only considers the full filename.
Note: the check can't simply be disabled for archives that contain
these extensions because there are some very broken archivers out
there.
Thanks to: Will Froning
MFC after: 3 days
.h files. This simplifies the Makefile here a bit and makes it behave
better in a couple of situations. While I'm here, clean up some comments
and try to improve the organization a bit.
Thanks to: Ruslan Ermilov (The Marvelous Makefile Guru)
