An obvious +1. Thanks!
- Garrett
Roger A. Faulkner wrote:
> I am sponsoring this automatic case for myself.
>
> 1. Introduction
>
> This case adds two new functions to the C library,
> futimens() and utimensat(), as follows:
>
> #include <sys/stat.h>
>
> int futimens(int fd, const struct timespec times[2]);
>
> int utimensat(int fd, const char *path,
> const struct timespec times[2], int flag);
>
> The commitment level of these interfaces is Committed.
>
> The release binding is "patch"
> (so it can be back-ported to Solaris 10 if required).
>
> 2. Discussion
>
> Problems with, for example, make on ZFS file systems have
> emerged because ZFS keeps access and modification times for
> its files with nanosecond granularity, while commands such
> as touch(1) will only set access and modification times of
> its target files to microsecond granularity (rounded down).
> See the bugid:
>
> 6539657 touch(1) does not set the nanosecond timestamp
> of a file correctly
>
> The touch(1) command (and possibly others) need a system call
> interface that sets access and modification times of files
> with nanosecond granularity.
>
> Happily, such interfaces have been designed and are specified
> in the latest SUSv4 Posix interface specification:
>
> #include <sys/stat.h>
>
> int futimens(int fd, const struct timespec times[2]);
>
> int utimensat(int fd, const char *path,
> const struct timespec times[2], int flag);
>
> Even though Solaris does not (yet) implement the new Posix
> standard, there is nothing stopping Solaris from providing
> a few of the newly-specified interfaces (provided that the
> names are appropriately hidden from view when an old
> standards-conforming application is compiled).
>
> 3. Interface table
>
> Both functions are Committed.
> Both are specified by the latest Posix specification.
>
> 4. References
>
> 6815302 Implement futimens, utimensat(POSIX.1-2008) -
> set file modification times with nanosecond granularity
>
> 5. Manual pages.
>
> See the materials directory for the futimens(2) manual page.
> This is copied from the Posix specification, with minor changes
> such as changing "shall" to "will" in the text.
>
> Roger Faulkner
>
>
