Win7 system update hosed something in Cygwin

[David Karr]

On Fri, Aug 16, 2019 at 11:22 AM Houder wrote:

> On Fri, 16 Aug 2019 16:58:09, Houder  wrote:
> > On Fri, 16 Aug 2019 06:40:28, David Karr  wrote:
> > > On Fri, Aug 16, 2019 at 2:01 AM Houder wrote:
> > ..
> >
> > > > Please study /etc/profile where it says "here is how HOME is set" ...
> > > >
> > >
> > > Ok. This says:
> > >
> > >   #  1) From existing HOME in the Windows environment, translated to a
> > > Posix path
> > >   #  2) from /etc/passwd, if there is an entry with a non empty
> directory
> > > field
> > >   #  3) from HOMEDRIVE/HOMEPATH
> > >   #  4) / (root)
> > >
> > > I just brought up a cmd shell and entered "set" and looked at the
> result.
> > >
> > > 1. I don't have a "HOME" variable setting.
> > > 2. /etc/passwd doesn't exist in Cygwin.
> > > 3. I DO have both HOMEDRIVE and HOMEPATH set, and that points to my
> Windows
> > > home directory, which DOES exist.
> > > 4. This is what I am getting.
> >
> > Perhaps comment in file is not complete? (is getent perhaps used?)
>
> Execute from a command prompt:
>
> <your Cygwin root>\bin\env
>
> and observe that HOME is added to the environment by the cygwin1.dll ...
> (at the end of the listing/environment array)
>

Yes, it adds "HOME=/".


> Next, study
>
>  - https://cygwin.com/cygwin-ug-net/ntsec.html#ntsec-mapping
>  - https://cygwin.com/cygwin-ug-net/ntsec.html#ntsec-mapping-nsswitch
>
> You should find the answer here; somewhere (/etc/nsswitch.conf?), you
> define
> HOME (db_home:?) ... that is why HOME is known to the cygwin1.dll.
>

All the lines in nsswitch.conf are commented out, so I assume they're not
active.


> Henri
>
> > > So, before this reboot, my Cygwin home directory has always been
> > > "/home/<myuid>", which has always resided at
> "c:\cygwin64\home\<myuid>".
> > > After the reboot, my Cygwin home directory is "/", which appears to
> > > translate to "c:\cygwin64" (from "cygpath -w /").  However, according
> to
> > > the rules listed in /etc/profille, I SHOULD be getting home set to
> > > "c:/Users/<myuid>", although I don't want that.
> > >
> > > Any other ideas?
> >
> >  1. cygcheck -srv? (include the compressed output to your reply)
> >
> >  2. getent passwd? (what home directory for your id?)
> >
> >  3. /etc/nsswitch.conf? (db_home?)
> >
> > Henri
> >
> >
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