Adjust dependencies for programs using libarchive
Add xz and linkage against liblzma to rescue system
Approved by: kientzle, delphij (mentor)
MFC after: 2 weeks
Translate getdate.y into C for portability. Make the get_date()
function easier to test as well:
* Have it accept a time_t "now" to use as a reference so that test
code can verify relative time specifications against known starting
points.
* Set up default date after parsing the string so that we
can use the specified timezone (if any) instead of the local
default. Otherwise, local DST makes it almost impossible to
reliably test time specifications such as "sunday UTC"
good job writing this test; it exercises a lot of subtle cases. The
trickiest one is that a hardlink to something that didn't get
extracted should not itself be extracted. In some sense, this is not
the desired behavior (we'd rather restore the file), but it's the best
you can do in a single-pass restore of a tar archive.
The test here should be extended to exercise cpio and newc formats as
well, since their hardlink models are different, which will lead to
different handling of some of these edge cases.
Submitted by: Jaakko Heinonen
MFC after: 30 days
In particular:
* tar -x -P follows symlinks to existing dirs, but not without -P
* symlinks to files are always replaced
* broken symlinks are always replaced
In addition to a number of bug fixes and minor changes:
* --numeric-owner (ignore user/group names on create and extract)
* -S (sparsify files on extraction)
* -s (regex filename substitutions)
* Use new libarchive 'linkify' to get correct hardlink handling for
both old and new cpio formats
* Rework 'copy' test to be insensitive to readdir() filename ordering
Most of the credit for this work goes to Joerg Sonnenberger, who
has been duplicating features from NetBSD's 'pax' program.
