Re: [Xen-devel] [PATCH] libxl: Be more careful with error handling in libxl__dm_runas_helper()

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Ian Campbell writes ("Re: [Xen-devel] [PATCH] libxl: Be more careful with error 
handling in libxl__dm_runas_helper()"):
> On Thu, 2015-11-26 at 10:03 +0000, Ian Campbell wrote:
> > My reference when reviewing this is the (IMHO more canonical) http://pubs.o
> > pengroup.org/onlinepubs/9699919799/functions/getpwnam.html .
> 
> Maybe we should be considering whether "Applications wishing to check for
> error situations should set errno to 0 before calling getpwnam(). If
> getpwnam() returns a null pointer and errno is non-zero, an error
> occurred." ought to be applies to getpwnam_r too?

Maybe that is the bug in the OS Boris is having this trouble with.  If
so then setting errno first would be a better workaround.

Ian.

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