[Libguestfs] [nbdkit PATCH 0/8] fd leak safety

[Eric Blake]

There's enough here to need a review; some of it probably needs
backporting to stable-1.12.

This probably breaks tests on Haiku or other platforms that have not
been as on-the-ball about atomic CLOEXEC; feel free to report issues
that arise, and I'll help come up with workarounds (even if we end up
leaving a rare fd leak on less-capable systems).

Meanwhile, I'm still working on my promise to add an nbdkit_nanosleep
for use in the delay and stat filters, and which makes nbdkit more
responsive to ^C where it currently waits for a full delay to expire
before exiting.  (Nothing like finding several other pre-requisite
bugs to fix first before getting to my real goal...)

Eric Blake (8):
  rate: Pass through delay failures
  server: Don't leave uninit variable on failure
  server: Add test for nbdkit_read_password
  Revert "RHEL 5: Define O_CLOEXEC and SOCK_CLOEXEC."
  cow, cache: Better mkostemp fallback
  server: Atomically set CLOEXEC on all fds
  filters: Set CLOEXEC on files opened during .config
  rate: Atomically set CLOEXEC on fds

 server/internal.h             |  8 ----
 filters/cache/blk.c           | 19 ++++++++-
 filters/cow/blk.c             | 19 ++++++++-
 filters/log/log.c             | 20 ++++++++-
 filters/rate/rate.c           | 26 ++++++++----
 filters/stats/stats.c         | 18 +++++++-
 filters/xz/xzfile.c           |  4 --
 plugins/example2/example2.c   |  4 --
 plugins/file/file.c           |  4 --
 plugins/streaming/streaming.c |  4 --
 server/connections.c          |  1 +
 server/quit.c                 |  5 ++-
 server/sockets.c              |  7 ++--
 server/test-utils.c           | 79 +++++++++++++++++++++++++++++++++--
 server/utils.c                | 10 ++++-
 15 files changed, 182 insertions(+), 46 deletions(-)

-- 
2.20.1