On 2024-04-04 19:08, Martin Wege via Cygwin wrote:
On Fri, Apr 5, 2024 at 2:55 AM Brian Inglis via Cygwin
<cygwin@cygwin.com> wrote:
On 2024-04-04 18:05, Martin Wege via Cygwin wrote:
I have problems with debugging, so a quick help would be appreciated,
as I cannot figure this out after several hours of digging.
Cygwin /usr/bin/stat returns "Birth: -" for some files. Which value
must the CreationTime member of FILE_BASIC_INFORMATION have to cause
/usr/bin/stat ti return "-"? 0, -1, or something else?
https://git.savannah.gnu.org/cgit/coreutils.git/tree/src/stat.c#n1618
=> tv_nsec < 0
https://cygwin.com/git?p=newlib-cygwin.git;a=blob;f=winsup/cygwin/fhandler/disk_file.cc#l414
https://cygwin.com/git/?p=newlib-cygwin.git;a=blob;f=winsup/cygwin/times.cc#l283
Thank you
But how can tv_nsec become negative (tv_nsec < 0)? That can only
happen if BasicInformation.CreationTime.QuadPart is negative, right?
Caller or application can set 0 to mean keep/return current value, caller or
driver can set -1 to mean don't update/return current value:
https://learn.microsoft.com/en-us/windows-hardware/drivers/ddi/wdm/ns-wdm-_file_basic_information#remarks
--
Take care. Thanks, Brian Inglis Calgary, Alberta, Canada
La perfection est atteinte Perfection is achieved
non pas lorsqu'il n'y a plus rien à ajouter not when there is no more to add
mais lorsqu'il n'y a plus rien à retirer but when there is no more to cut
-- Antoine de Saint-Exupéry
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