Re: Problem with boot-time on Cygwin

[Ken Brown]

Hi Bruno,

On 5/1/2024 6:52 PM, Bruno Haible wrote:
> I did not know about /proc/cygdrive; thanks for teaching us. I guess it can be
> assumed that /proc/cygdrive exists, because unlike in Linux, there are no
> Docker containers and unlike in FreeBSD, there are no jails?

I don't know anything about Docker containers or jails, but it's my 
understanding that /proc/cygdrive always exists.

> I'm committing this patch:
>
>
> 2024-05-01  Bruno Haible  <bruno@clisp.org>
>
>         readutmp, boot-time: Improve for some Cygwin installations.
>         Reported by Ken Brown <kbrown@cornell.edu> in
>         <https://lists.gnu.org/archive/html/bug-gnulib/2024-05/msg00008.html>.
>         * lib/boot-time-aux.h (get_windows_boot_time): Use /proc/cygdrive/
>         instead of /cygdrive/.
>
> diff --git a/lib/boot-time-aux.h b/lib/boot-time-aux.h
> index 8b966fe691..a94cdb3f30 100644
> --- a/lib/boot-time-aux.h
> +++ b/lib/boot-time-aux.h
> @@ -306,7 +306,8 @@ get_windows_boot_time (struct timespec *p_boot_time)
>        process, namely C:\pagefile.sys.  */
>     const char * const boot_touched_file =
>       #if defined __CYGWIN__ && !defined _WIN32
> -    "/cygdrive/c/pagefile.sys"
> +    /* It is more portable to use /proc/cygdrive/c than /cygdrive/c.  */
> +    "/proc/cygdrive/c/pagefile.sys"
>       #else
>       "C:\\pagefile.sys"
>       #endif

Thanks.

Ken