9.345 gethostname

POSIX specification:
http://www.opengroup.org/onlinepubs/9699919799/functions/gethostname.html

Gnulib module: gethostname

Portability problems fixed by Gnulib:

• On mingw and MSVC 9, this function has a prototype that differs from that specified by POSIX, and it is defined only in the ws2_32 library.

Portability problems not fixed by Gnulib:

• This function’s second argument type is int instead of size_t on some platforms: OSF/1 5.1, Solaris 10.
• If the given buffer is too small for the host name, some implementations fail with EINVAL, instead of returning a truncated host name.