Discussion:
utimecmp: support for native Windows
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Bruno Haible
2017-05-01 09:59:14 UTC
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This patch is tested with the utimens changes. I'm not sure it is really
necessary, but it's certainly not wrong.


2017-04-30 Bruno Haible <***@clisp.org>

utimecmp: Add support for native Windows.
* lib/utimecmp.c (SYSCALL_RESOLUTION): Set to 100 on native Windows.

diff --git a/lib/utimecmp.c b/lib/utimecmp.c
index cd773ae..9d8261d 100644
--- a/lib/utimecmp.c
+++ b/lib/utimecmp.c
@@ -45,6 +45,10 @@
no greater than 1 billion. */
#if HAVE_UTIMENSAT
enum { SYSCALL_RESOLUTION = 1 };
+#elif (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
+/* On native Windows, file times have 100 ns resolution. See
+ <https://msdn.microsoft.com/en-us/library/ms724284.aspx> */
+enum { SYSCALL_RESOLUTION = 100 };
#elif ((HAVE_FUTIMESAT || HAVE_WORKING_UTIMES) \
&& (defined HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC \
|| defined HAVE_STRUCT_STAT_ST_ATIMESPEC_TV_NSEC \

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