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Mail Archives: cygwin/2009/07/15/08:48:21

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Date: Wed, 15 Jul 2009 06:46:31 -0600
From: Eric Blake <ebb9 AT byu DOT net>
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To: cygwin AT cygwin DOT com
Subject: Re: [1.7] bug in chdir
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According to Corinna Vinschen on 7/15/2009 2:46 AM:
>> $ cd //home
>> $ # huh? no error reported?
> 
> Sorry Eric, but I can't reproduce this.  I tried it on XP and 2K8R2
> with identical result.

Weird - it's failing for me on my home network as well, and only passing
at work (and then, only for certain names).

> 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...)

on my home machine:
$ uname -a
CYGWIN_NT-5.1 LOUNGE 1.7.0(0.212/5/3) 2009-07-13 10:28 i686 Cygwin
...
   80 7228161 [main] bash 2228 chdir: dir '//bin'
  366 7228527 [main] bash 2228 normalize_posix_path: src //bin
   67 7228594 [main] bash 2228 normalize_posix_path: //bin =
normalize_posix_path (//bin)
   41 7228635 [main] bash 2228 mount_info::conv_to_win32_path:
conv_to_win32_path (//bin)
   40 7228675 [main] bash 2228 set_flags: flags: binary (0x2)
   37 7228712 [main] bash 2228 mount_info::conv_to_win32_path: src_path
//bin, dst \\bin, flags 0x2, rc 0
   64 7228776 [main] bash 2228 build_fh_pc: fh 0x6123D60C
- --- Process 2228, exception 000006BA at 7C812AFB
 2217 7230993 [main] bash 2228 __set_errno: int chdir(const char*):2569 val 2
   73 7231066 [main] bash 2228 chdir: -1 = chdir (//bin)


on my work machine:
$ uname -a
CYGWIN_NT-5.1 EBLAKE 1.7.0(0.212/5/3) 2009-07-13 10:28 i686 Cygwin
   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'
...
$ 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?

- --
Don't work too hard, make some time for fun as well!

Eric Blake             ebb9 AT byu DOT net
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