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From: Dipak Gaigole <dipakgaigole AT gmail DOT com>
Date: Thu, 8 Dec 2016 01:53:22 +0530
Message-ID: <CADs2-=TCsi-vpQxa+Nhwgc6GHo734qpGh+DOYcuYo36C5r4t0g@mail.gmail.com>
Subject: Problem with chdir and GetCurrentDirectory on Windows 2016
To: cygwin AT cygwin DOT com
Content-Type: text/plain; charset=UTF-8

Hello,

I am facing a very strange problem with chdir and GetCurrentDirectory.
After calling chdir (), the call to GetCurrentDirectory () returns
wrong value. I tested this on Windows 7 and Windows 2016. It is
working fine on Windows 7 whereas wrong values are returned on Windows
2016. I guess we should see the same behavior on Windows 10 (client
version of Windows 2016) as well.

#########################################################################
Administrator AT windows2k16vika /cygdrive/c/src
$ cygcheck.exe -c cygwin
Cygwin Package Information
Package              Version        Status
cygwin               1.7.33-1       OK

Administrator AT windows2k16vika /cygdrive/c/src
$ uname -a
CYGWIN_NT-10.0-WOW6 windows2k16vika 1.7.33-2(0.280/5/3) 2014-11-13
15:45 i686 Cygwin

Administrator AT windows2k16vika /cygdrive/c/src
$ cat test_cwd.c
#include <stdio.h>
#include <unistd.h>
#include <windows.h>

#define BUF_SIZE 512

int main()
{
    int ret;
    char *dir;
    char dirname [BUF_SIZE];

    dir = "/cygdrive/c/Program Files";
    ret = chdir (dir);
    fprintf (stderr, "chdir (%s) reuturned <%d>\n", dir, ret);

    ret = GetCurrentDirectory(BUF_SIZE, dirname);
    if (ret)
        fprintf (stderr, "GetCurrentDirectory returned <%s>, ret =
<%d>\n", dirname, ret);

    dir = getcwd (dirname, BUF_SIZE);
    fprintf (stderr, "getcwd returned <%s>, ret = <%s>\n", dirname, dir);

    return 0;
}

Administrator AT windows2k16vika /cygdrive/c/src
$ gcc -g -Wall -lKernel32 test_cwd.c  -o test_cwd

Administrator AT windows2k16vika /cygdrive/c/src
$ ./test_cwd.exe
chdir (/cygdrive/c/Program Files) reuturned <0>
GetCurrentDirectory returned <C:\Pro>, ret = <6>
getcwd returned </cygdrive/c/Program Files>, ret = </cygdrive/c/Program Files>

Administrator AT windows2k16vika /cygdrive/c/src
$
#########################################################################

Has anyone noticed such behavior on Windows 10 or 2016? Any
suggestions, pointers?

Thanks,
Dipak

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