Dmitry Rozhkov d6153973fe Add compatibility with libarchive's bsdtar command ...

Since GNU tar fails to extract files with xattrs preserved when
Integrity Measurement Architecture (IMA) is enabled some vendors
may choose to install libarchive-based tar (bsdtar) on their embedded
devices, so the swupd server needs to be able to create archives
in its format.

This patch adds one compile-time options --enable-bsdtar that is used
to enable/disable GNU tar specific options. Also it harmonizes
the command strings to be compatible with both GNU tar and bsdtar.
Particularly it
- changes --exclude pattern from '%s'/* to more explicit '%s/?*' because
  bsdtar's pattern matching is greedier than in tar: it uses tcsh's
  globbing where '*' can be anything including the null string and the
  original pattern would include the directory itself;
- OS file names are escaped with leading ./ to avoid collisions with
  file names starting with @ which has special meaning in bsdtar.

Signed-off-by: Dmitry Rozhkov <dmitry.rozhkov@linux.intel.com>

2016-03-09 13:13:02 +02:00

..

swupd.h

Add compatibility with libarchive's bsdtar command

2016-03-09 13:13:02 +02:00

xattrs.h

Initial commit

2016-02-24 10:00:31 -08:00