Re: utimensat round 2

[Eric Blake]

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According to Eric Blake on 10/8/2009 7:13 AM:
> Here's the current state of my utimensat series.  It's now stable enough
> to post for review, although I reserve the right to rebase as I find
> tweaks are needed in the testsuite:

I've now implemented futimens.  The tests pass on at least modern Linux,
pre-utimensat Linux, cygwin 1.5, cygwin 1.7, Solaris 10, darwin, FreeBSD,
OpenBSD; and cleanly compiles and skips on mingw.  In the process, I found
a bug in cygwin 1.7 (utimensat improperly truncates) which now has a
pending patch, and in Linux (futimens(AT_FDCWD,NULL) attempts to change
the times of "." instead of failing).

I'm happy enough with the series that I will commit it tomorrow morning.
For now, here's where it can be reviewed, with differences from round 1:

git pull git://repo.or.cz/gnulib/ericb.git master

Eric Blake (8):
      [1/8] doc: mention timestamp portability issues
More docs since my first email.

      [2/8] utimens: add test
Test is more robust in the face of various timestamp issues.

      [3/8] utimens: validate futimens usage
Now compiles on mingw.

      [4/8] utimens: add lutimens interface
Don't make testsuite depend on nanosleep

      [5/8] utimecmp: support symlink timestamps
Use pathconf(_PC_TIMESTAMP_RESOLUTION), if available.

      [6/8] utimens: add UTIME_NOW and UTIME_OMIT support
Work around older Linux bug with UTIME_NOW and non-zero tv_sec.

      [7/8] utimens: introduce fdutimens
Not much difference.

      [8/8] futimens: new module
New.  Write futimens for systems that lack it, and wrap it for systems
where it is broken.  So far, only patched cygwin 1.7 passes using native
futimens.

> 
> Still to go:
> implement utimensat
> implement fdutimensat
> work around Solaris bugs in trailing slash handling

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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