[PATCH 0/3] Better report errors failing to open namespace tap device

[David Gibson <david@gibson.dropbear.id.au>]

In https://github.com/containers/podman/issues/19428, pasta is failing
to open the namespace tap device.  Paul Holzinger correctly noted that
pasta isn't very helpful in this case, with no information beyond "it
failed".  He suggested a patch for that, however it wasn't quite
sufficient: errno may not be propagated back from the ephemeral thread
which enters the namespace, and even if it does the errno alone won't
tell us which of the possible failure points actually failed.

2/3 here is a more robust change to address the problem.  The other
patches are minor cleanups I noticed along the way.

Link: https://bugs.passt.top/show_bug.cgi?id=69

David Gibson (3):
  util: Make ns_enter() a void function and report setns() errors
  tap: More detailed error reporting in tap_ns_tun()
  tap: Remove unnecessary global tun_ns_fd

 conf.c |  3 ++-
 tap.c  | 33 ++++++++++++++++++---------------
 udp.c  |  6 ++----
 util.c |  8 +++-----
 util.h |  2 +-
 5 files changed, 26 insertions(+), 26 deletions(-)

-- 
2.41.0