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Date: Wed, 15 Jul 2009 15:31:17 +0200
From: Corinna Vinschen <corinna-cygwin AT cygwin DOT com>
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Subject: Re: [1.7] bug in chdir
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On Jul 15 06:46, Eric Blake wrote:
> > If you're able to cd to //home, then there must be some crucial
> > difference in your environment.  You should debug this, at least with
> > strace, so we can find out under what circumstances this occurs.
> 
> (time passes...)
> [...]
>    56 6950464 [main] bash 25480 chdir: dir '//bin'
>    28 6950492 [main] bash 25480 normalize_posix_path: src //bin
>    28 6950520 [main] bash 25480 normalize_posix_path: //bin =
> normalize_posix_path (//bin)
>    28 6950548 [main] bash 25480 mount_info::conv_to_win32_path:
> conv_to_win32_path (//bin)
>    29 6950577 [main] bash 25480 set_flags: flags: binary (0x2)
>    27 6950604 [main] bash 25480 mount_info::conv_to_win32_path: src_path
> //bin, dst \\bin, flags 0x2, rc 0
>    36 6950640 [main] bash 25480 build_fh_pc: fh 0x6123D6E4
> - --- Process 25480, exception 000006BA at 7C812AFB
>  1859 6952499 [main] bash 25480 __set_errno: int chdir(const char*):2569 val 2
>    39 6952538 [main] bash 25480 chdir: -1 = chdir (//bin)
> ...
>    52  796747 [main] bash 12648 chdir: dir '//home'
>    28  796775 [main] bash 12648 normalize_posix_path: src //home
>    29  796804 [main] bash 12648 normalize_posix_path: //home =
> normalize_posix_path (//home)
>    27  796831 [main] bash 12648 mount_info::conv_to_win32_path:
> conv_to_win32_path (//home)
>    29  796860 [main] bash 12648 set_flags: flags: binary (0x2)
>    28  796888 [main] bash 12648 mount_info::conv_to_win32_path: src_path
> //home, dst \\home, flags 0x2, rc 0
>    33  796921 [main] bash 12648 build_fh_pc: fh 0x6123D6E4
> 69161  866082 [main] bash 12648 mount_info::conv_to_posix_path:
> conv_to_posix_path (\\home, no-keep-rel, no-add-slash)
>    45  866127 [main] bash 12648 normalize_win32_path: \\home =
> normalize_win32_path (\\home)
>    30  866157 [main] bash 12648 mount_info::conv_to_posix_path: //home =
> conv_to_posix_path (\\home)
>    28  866185 [main] bash 12648 chdir: 0 = chdir() cygheap->cwd.posix
> '//home' native '\??\UN\\home'
                   ^^^^^^^^^^^^
Gee!  I fixed that in CVS.  Fortunately it was only the debug output which
was affected by this.

> ...
> $ ls -dF //eblake //home //bin
> ls: cannot access //bin: No such file or directory
> //eblake/  //home/
> 
> 
> I guess that means, since //bin failed but //home succeeded, that there is
> a machine on the domain at my work which is named home but which is
> offline at the moment?

It seems so.  The fact that accessing //home does not create an
exception points to a successful SMB name resolution.


Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Project Co-Leader          cygwin AT cygwin DOT com
Red Hat

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