[Libguestfs] [nbdkit PATCH 0/3] Fix %m usage on BSD

[Eric Blake]

Our use of "%m" in various error messages is testament to the
project's initial life on Linux - but other than Cygwin, I know
of no other platforms supporting that glibc extension.

We COULD audit the code and manually turn "%m" into
"%s"/strerror(errno), but that's a lot of churn. Instead, let's
fix the few outliers that can't be easily wrapped, then wrap
the remainder.

While I was able to test this on Linux (both that no wrapper is
used by default, and that faking that %m fails causes the wrapper
to do the right thing), I haven't actually tried it on a BSD box,
hence I'll wait for review before pushing.

Eric Blake (3):
  main: Avoid fprintf(%m) for BSD builds
  log: Ensure %m sees correct errno
  log: Guarantee the operation of %m in nbdkit_error()

 docs/nbdkit-filter.pod | 13 +++++++++----
 docs/nbdkit-plugin.pod | 13 +++++++++----
 configure.ac           | 27 +++++++++++++++++++++++++++
 src/internal.h         |  6 ++++++
 src/log-stderr.c       |  4 ++--
 src/log-syslog.c       |  6 +++---
 src/log.c              | 21 +++++++++++++++++++++
 src/main.c             |  4 ++--
 8 files changed, 79 insertions(+), 15 deletions(-)

-- 
2.17.2