Commit 080cbfcab5a4ddf2405c018aa7c7f95ac336a465
2009-10-07T16:05:34
utimens: add UTIME_NOW and UTIME_OMIT support These flags make it possible to implement futimens and utimensat; they also make touch(1) more efficient, by avoiding stat or gettime if native utimensat works. * lib/utimens.c (validate_timespec, update_timespec): New helper functions. (gl_futimens, lutimens): Use them. * modules/utimens (Depends-on): Add gettime, lstat, stat-time, stdbool, sys_stat. (Link): Mention resulting library dependency. * modules/utimecmp (Link): Likewise. * modules/utimens-tests (Depends-on): Drop stat-time, stdbool. (Makefile.am): Pick up library dependency. * lib/sys_stat.in.h (UTIME_NOW, UTIME_OMIT): Guarantee a definition. * tests/test-sys_stat.c: Test the definitions. * doc/posix-headers/sys_stat.texi (sys/stat.h): Document this. * NEWS: Document library dependency. Signed-off-by: Eric Blake <ebb9@byu.net>