long-options: add parse_gnu_standard_options_only Discussed in https://bugs.gnu.org/33468 . * lib/long-options.c (parse_long_options): Use EXIT_SUCCESS instead of 0. (parse_gnu_standard_options_only): Add function to process the GNU default options --help and --version and fail for any other unknown long or short option. See https://gnu.org/prep/standards/html_node/Command_002dLine-Interfaces.html . * lib/long-options.h (parse_gnu_standard_options_only): Declare it. * modules/long-options (depends-on): Add stdbool, exitfail. * top/maint.mk (sc_prohibit_long_options_without_use): Update syntax-check rule, add new function name.

Description:
fdatasync(2) function: synchronize writes to a file.

Files:
lib/fdatasync.c
m4/fdatasync.m4

Depends-on:
fsync         [test $HAVE_FDATASYNC = 0]
unistd

configure.ac:
gl_FUNC_FDATASYNC
if test $HAVE_FDATASYNC = 0; then
  AC_LIBOBJ([fdatasync])
fi
gl_UNISTD_MODULE_INDICATOR([fdatasync])

Makefile.am:

Include:
<unistd.h>

Link:
$(LIB_FDATASYNC)

License:
LGPLv2+

Maintainer:
Eric Blake