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

E. Madison Bray erik.m.bray@gmail.com
Thu Apr 11 12:59:00 GMT 2019


On Wed, Apr 10, 2019 at 10:50 PM Corinna Vinschen wrote:
>
> 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.

Excellent, thank you!



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