RFR : 8196578 : enhance errno_to_string function in os.cpp with some additional errno texts from AIX 7.1

[Thomas Stüfe]

Hi Matthias,

This would probably better discussed in hotspot-runtime, no?

The old error codes and their descriptions were Posix (
http://pubs.opengroup.org/onlinepubs/000095399/basedefs/errno.h.html). I do
not really like spamming a shared file with AIX specific errno codes. Can
we move platform specific error codes to platform files? Eg by having a
platform specific version pd_errno_to_string(), which has a first shot at
translating errno values, and only if that one returns no result reverting
back to the shared version?

Small nit:

- DEFINE_ENTRY(ESTALE, "Reserved")
+ DEFINE_ENTRY(ESTALE, "No filesystem / stale NFS file handle")

I like the glibc text better, just "Stale file handle". NFS seems too
specific, can handles for other remote file systems not get stale?

Kind Regards, Thomas

On Thu, Feb 1, 2018 at 5:16 PM, Baesken, Matthias <matthias.baesken at sap.com>
wrote:

> Hello , I enhanced  the  errno - to -  error-text mappings   in os.cpp
>  for a few errnos we find on AIX 7.1 .
> Some of these added errnos are found as well on  Linux (e.g. SLES 11 / 12
> ).
>
> Could you please check and review ?
>
> ( btw. there is good cross platform  info about the errnos at
> http://www.ioplex.com/~miallen/errcmp.html     )
>
> Bug :
>
> https://bugs.openjdk.java.net/browse/JDK-8196578
>
> Webrev :
>
> http://cr.openjdk.java.net/~mbaesken/webrevs/8196578/
>
>
>
> Best regards, Matthias
>
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