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Date:	Wed, 12 May 2021 10:10:26 +0300
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To:	Corinna Vinschen via Cygwin <cygwin AT cygwin DOT com>, cygwin AT cygwin DOT com
Subject:	Re: realpath issue with native[strict] symlinks
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From:	Andrey Repin via Cygwin <cygwin AT cygwin DOT com>
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Cc:	Andrey Repin <anrdaemon AT yandex DOT ru>
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Greetings, Corinna Vinschen via Cygwin!

> I reworked the code handling native symlinks to handle virtual drives
> as well.  It might even be a tiny bit quicker now.

> The changes have a behavioral change, but I think this is for the
> better: Virtual drives are not treated as drives anymore, but as
> symlinks.  Given they are just pointers to other drives or directories,
> tha't much closer to reality.  I. e., in case of my above virtual drive
> T:, what you'll see in the /cygdrive dir (unless your cygdrive prefix is
> / only) is this:

> $ ls /cygdrive
> $ ls -lG /mnt
> total 16
> d---r-x---+ 1 TrustedInstaller  0 Apr 29 21:07 c
> drwxr-xr-x  1 corinna           0 Dec 31  1979 e
> lrwxrwxrwx  1 corinna          32 May  6 20:43 t -> /cygdrive/c/cygwin64/home/corinna/tmp

> I uploaded new developer snapshots to https://cygwin.com/snapshots/
> for testing.

Interesting effect.
I do have fstab entry
none / cygdrive noacl,binary,nouser,posix=0 0 0
And this is what I see with and without changes.

(3.2.0)
$ ls -ld /proc/cygdrive/{a..z} 2> /dev/null
drwxr-x--- 1 anrdaemon None 0 апр 22 23:12 /proc/cygdrive/c
drwxr-x--- 1 anrdaemon None 0 апр 30 18:05 /proc/cygdrive/d
drwxr-x--- 1 anrdaemon None 0 апр 22 23:11 /proc/cygdrive/e
drwxr-x--- 1 anrdaemon None 0 май 11 21:27 /proc/cygdrive/w
drwxr-x--- 1 anrdaemon None 0 фев 14  2018 /proc/cygdrive/y
drwxr-x--- 1 anrdaemon None 0 май 12 03:59 /proc/cygdrive/z

(snapshot)
$ ls -ld /proc/cygdrive/{a..z} 2> /dev/null
drwxr-x--- 1 anrdaemon None  0 апр 22 23:12 /proc/cygdrive/c
drwxr-x--- 1 anrdaemon None  0 апр 30 18:05 /proc/cygdrive/d
drwxr-x--- 1 anrdaemon None  0 апр 22 23:11 /proc/cygdrive/e
drwxr-x--- 1 anrdaemon None  0 май 11 21:27 /proc/cygdrive/w
lrwxrwxrwx 1 anrdaemon None 35 фев 14  2018 /proc/cygdrive/y -> //HOSTING64.DARKDRAGON.LAN/wwwroot/
lrwxrwxrwx 1 anrdaemon None 35 май 12 03:59 /proc/cygdrive/z -> //DAEMON1.DARKDRAGON.LAN/anrdaemon/

I think I like these changes.
Thank you very much.


-- 
With best regards,
Andrey Repin
Wednesday, May 12, 2021 10:04:43

Sorry for my terrible english...

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