Re: Win7 system update hosed something in Cygwin

[Houder <houder at xs4all dot nl>]

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)

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.

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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