[PATCH] Improve error handling in /proc/[pid]/ virtual files.

Corinna Vinschen corinna-cygwin@cygwin.com
Wed Apr 10 20:50:00 GMT 2019

On Apr 10 17:05, Erik M. Bray wrote:
> * Changes error handling to allow /proc/[pid]/ virtual files to be
>   empty in some cases (in this case the file's formatter should return
>   -1 upon error, not 0).
> * Better error handling of /proc/[pid]/stat for zombie processes:
>   previously trying to open this file on zombie processes resulted
>   in an EINVAL being returned by open().  Now the file can be read,
>   and fields that can no longer be read are just zeroed.
> * Similarly for /proc/[pid]/statm for zombie processes.
> * Similarly for /proc/[pid]/maps for zombie processes (in this case the
>   file can be read but is zero-length, which is consistent with observed
>   behavior on Linux.

Pushed.  New snapshots building right now.


Corinna Vinschen
Cygwin Maintainer
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