[Libguestfs] [nbdkit PATCH v2 0/3] more consistent stdin/out handling

[Eric Blake]

In v2:
- use int instead of bool in the public header
- split the tests from the code
- don't overload test-layers; instead, add new tests
- add a missing fflush exposed by the new tests
- other minor cleanups

Eric Blake (3):
  server: Add nbdkit_stdio_safe
  server: Sanitize stdin/out before running plugin code
  server: More tests of stdin/out handling

 docs/nbdkit-plugin.pod          |  23 ++++-
 plugins/sh/nbdkit-sh-plugin.pod |   4 +-
 include/nbdkit-common.h         |   1 +
 tests/Makefile.am               |  23 +++++
 server/internal.h               |   2 +
 server/background.c             |  14 +--
 server/captive.c                |  10 +-
 server/connections.c            |  12 ---
 server/main.c                   |  38 ++++++-
 server/nbdkit.syms              |   1 +
 server/public.c                 |  18 +++-
 server/test-public.c            |  23 ++++-
 plugins/sh/sh.c                 |   7 +-
 tests/test-single-sh.sh         |  78 +++++++++++++++
 tests/test-stdio.sh             |  95 ++++++++++++++++++
 tests/test-stdio-plugin.c       | 170 ++++++++++++++++++++++++++++++++
 16 files changed, 489 insertions(+), 30 deletions(-)
 create mode 100755 tests/test-single-sh.sh
 create mode 100755 tests/test-stdio.sh
 create mode 100644 tests/test-stdio-plugin.c

-- 
2.26.0