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1.3.6-5: BUG: stat() returns 0 when errno != 0
- From: David Rothenberger <d dot roth at verizon dot net>
- To: cygwin at cygwin dot com
- Date: Fri, 07 Dec 2001 11:04:30 -0800
- Subject: 1.3.6-5: BUG: stat() returns 0 when errno != 0
I've discovered an inconsistency in the way stat() treats windows-style
paths (e.g., "z:/foo") and unix-style paths ("/z/foo"). If the drive
doesn't exist, stat() returns 0 with a windows path and -1 with a unix
path. errno != 0 in both cases. This behavior exists in the latest
1.3.6 dll but not in the latest 1.3.5 dll.
I discovered the problem while tracking down why the xemacs
file-exists-p function wasn't working as expected. It always returned t
for windows-style paths with invalid drives. Unfortunately, I have at
least one xemacs package that uses windows-style paths with cygwin.
Anyway, here's a test program that demonstrates the problem.
---------------------------------------------------
#include <stdio.h>
#include <sys/stat.h>
#include <errno.h>
int main (int argc, char** argv)
{
struct stat buf;
int retval = stat(argv[1], &buf);
printf("retval = %d\n", retval);
return errno;
}
---------------------------------------------------
Here's some output using 1.3.6-5. In my environment, there is no drive
Z and there is a drive C.
,---[./statcheck z:/foo]
| retval = 0, errno = 2
`---
,---[./statcheck /z/foo]
| retval = -1, errno = 2
`---
,---[./statcheck c:/foo]
| retval = -1, errno = 2
`---
,---[./statcheck /c/foo]
| retval = -1, errno = 2
`---
I think this may be related to the cygwin_posix_to_win32_path_list()
problems reported earlier, but I'm not sure. If it helps, here's the
output from my pathconvtest.c program, included below.
----------------------------------------------------------------------
#include <stdio.h>
int main (int argc, char** argv)
{
char* name = argv[1];
char* tmp;
tmp = alloca (cygwin_posix_to_win32_path_list_buf_size(name));
cygwin_posix_to_win32_path_list(name, tmp);
printf("%s -> %s\n", name, tmp);
return 0;
}
-----------------------------------------------------------------------
,---[./pathconvtest z:/foo]
| z:/foo -> z;C:\cygwin\foo
`---
,---[./pathconvtest /z/foo]
| /z/foo -> C:\cygwin\z\foo
`---
,---[./pathconvtest c:/foo]
| c:/foo -> c;C:\cygwin\foo
`---
,---[./pathconvtest /c/foo]
| /c/foo -> c:\foo
`---
Here's my cygcheck output...
,---[cygcheck -s -r]
|
| Cygnus Win95/NT Configuration Diagnostics
| Current System Time: Fri Dec 07 10:46:44 2001
|
| Windows 2000 Professional Ver 5.0 Build 2195 Service Pack 2
|
| Path: ~\bin
| C:\cygwin\usr\local\bin
| C:\cygwin\bin
| c:\jdk1.2.2\bin
| C:\cygwin\bin
| C:\cygwin\usr\local\bin\i686-pc-cygwin
| c:\Oracle\Ora81\bin
| c:\Program Files\Oracle\jre\1.1.7\bin
| c:\WINNT\system32
| c:\WINNT
| c:\WINNT\System32\Wbem
| c:\Program Files\Network Associates\PGPNT
| c:\Program Files\Rational\common
| c:\Program Files\Rational\Rational Test
| c:\Program Files\Rational\ClearCase\bin
| c:\Program Files\Hummingbird\Connectivity\7.00\Accessories\
| c:\Program Files\Rational\ClearQuest
| c:\Program Files\Executive Software\DiskeeperWorkstation\
| c:\PROGRA~1\RATIONAL\RATION~1\NUTCROOT\bin
| c:\PROGRA~1\RATIONAL\RATION~1\NUTCROOT\bin\x11
| c:\PROGRA~1\RATIONAL\RATION~1\NUTCROOT\mksnt
| c:\users\daver\bin
| c:\Program Files\SSH Communications Security\SSH Secure Shell
|
| SysDir: C:\WINNT\System32
| WinDir: C:\WINNT
|
| CYGWIN = `tty ntsec'
| HOME = `c:\users\daver'
| MAKE_MODE = `unix'
| PWD = `/home/daver/tmp'
| USER = `daver'
|
| HKEY_CURRENT_USER\Software\Cygnus Solutions
| HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
| HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
| (default) = `/cygdrive'
| cygdrive flags = 0x00000020
| HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
|
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\Start
Menu\Programs\Cygnus Solutions
| (default) = (unsupported type)
|
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\Start
Menu\Programs\Development\Cygnus Solutions
| (default) = (unsupported type)
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
| (default) = `/cygdrive'
| cygdrive flags = 0x00000028
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/
| (default) = `C:/cygwin'
| flags = 0x00000008
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/c
| (default) = `c:'
| flags = 0x00000008
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/e
| (default) = `e:'
| flags = 0x00000008
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/h
| (default) = `h:'
| flags = 0x00000008
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/home
| (default) = `c:/users'
| flags = 0x00000008
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/m
| (default) = `m:'
| flags = 0x00000008
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/p
| (default) = `p:'
| flags = 0x00000008
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/u
| (default) = `u:'
| flags = 0x00000008
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
| (default) = `C:/cygwin/bin'
| flags = 0x00000008
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
| (default) = `C:/cygwin/lib'
| flags = 0x00000008
| HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options
|
| a: fd N/A N/A
| c: hd NTFS 19594Mb 52% CP CS UN PA FC
| d: cd N/A N/A
| e: hd NTFS 78159Mb 46% CP CS UN PA FC External
| h: net NTFS 19594Mb 52% CP CS UN PA FC
| m: net MVFS 1000Mb 50% CP CS CCase
| p: net NTFS 7134Mb 64% CP CS PA .
| u: net NTFS 43974Mb 28% CP CS UN PA FC DATA2
|
| . /cygdrive user textmode,noumount
| C:/cygwin / system textmode
| c: /c system textmode
| e: /e system textmode
| h: /h system textmode
| c:/users /home system textmode
| m: /m system textmode
| p: /p system textmode
| u: /u system textmode
| C:/cygwin/bin /usr/bin system textmode
| C:/cygwin/lib /usr/lib system textmode
| . /cygdrive user textmode,noumount
|
| Found: C:\cygwin\bin\bash.exe
| Found: C:\cygwin\bin\cat.exe
| Found: C:\cygwin\bin\cpp.exe
| Found: c:\PROGRA~1\RATIONAL\RATION~1\NUTCROOT\bin\cpp.exe
| Found: C:\cygwin\bin\find.exe
| Found: C:\cygwin\bin\gcc.exe
| Found: C:\cygwin\bin\gdb.exe
| Found: C:\cygwin\bin\ld.exe
| Found: C:\cygwin\bin\ls.exe
| Found: C:\cygwin\bin\make.exe
| Found: C:\cygwin\bin\sh.exe
|
| 56k 2000/12/03 C:\cygwin\bin\cygbz21.0.dll
| 821k 2001/11/19 C:\cygwin\bin\cygcrypto.dll
| 99k 2001/11/20 C:\cygwin\bin\cygcurl-2.dll
| 45k 2001/04/25 C:\cygwin\bin\cygform5.dll
| 34k 2001/09/30 C:\cygwin\bin\cygform6.dll
| 18k 2000/10/23 C:\cygwin\bin\cyggdbm.dll
| 17k 2001/06/28 C:\cygwin\bin\cyghistory4.dll
| 21k 2001/06/28 C:\cygwin\bin\cyghistory5.dll
| 21k 2001/06/20 C:\cygwin\bin\cygintl.dll
| 81k 2001/10/20 C:\cygwin\bin\cygitcl30.dll
| 35k 2001/10/20 C:\cygwin\bin\cygitk30.dll
| 45k 2001/07/04 C:\cygwin\bin\cygjbig1.dll
| 119k 2001/06/06 C:\cygwin\bin\cygjpeg6b.dll
| 26k 2001/04/25 C:\cygwin\bin\cygmenu5.dll
| 19k 2001/09/30 C:\cygwin\bin\cygmenu6.dll
| 156k 2001/04/25 C:\cygwin\bin\cygncurses++5.dll
| 175k 2001/09/30 C:\cygwin\bin\cygncurses++6.dll
| 226k 2001/04/25 C:\cygwin\bin\cygncurses5.dll
| 201k 2001/09/30 C:\cygwin\bin\cygncurses6.dll
| 15k 2001/04/25 C:\cygwin\bin\cygpanel5.dll
| 12k 2001/09/30 C:\cygwin\bin\cygpanel6.dll
| 40k 2001/11/21 C:\cygwin\bin\cygpcre.dll
| 39k 2001/11/21 C:\cygwin\bin\cygpcreposix.dll
| 163k 2001/05/06 C:\cygwin\bin\cygpng2.dll
| 108k 2001/06/28 C:\cygwin\bin\cygreadline4.dll
| 135k 2001/06/28 C:\cygwin\bin\cygreadline5.dll
| 66k 2001/11/20 C:\cygwin\bin\cygregex.dll
| 231k 2001/11/19 C:\cygwin\bin\cygssl.dll
| 390k 2001/10/20 C:\cygwin\bin\cygtcl80.dll
| 5k 2001/10/20 C:\cygwin\bin\cygtclpip80.dll
| 10k 2001/10/20 C:\cygwin\bin\cygtclreg80.dll
| 245k 2001/06/12 C:\cygwin\bin\cygtiff3.dll
| 623k 2001/10/20 C:\cygwin\bin\cygtk80.dll
| 41k 2001/07/04 C:\cygwin\bin\cygXpm-noX4.dll
| 45k 2001/07/04 C:\cygwin\bin\cygXpm-X4.dll
| 49k 2001/02/03 C:\cygwin\bin\cygz.dll
| 720k 2001/12/07 C:\cygwin\bin\cygwin1.dll
| Cygwin DLL version info:
| DLL version: 1.3.6
| DLL epoch: 19
| DLL bad signal mask: 19005
| DLL old termios: 5
| DLL malloc env: 28
| API major: 0
| API minor: 47
| Shared data: 3
| DLL identifier: cygwin1
| Mount registry: 2
| Cygnus registry name: Cygnus Solutions
| Cygwin registry name: Cygwin
| Program options name: Program Options
| Cygwin mount registry name: mounts v2
| Cygdrive flags: cygdrive flags
| Cygdrive prefix: cygdrive prefix
| Cygdrive default prefix:
| Build date: Fri Dec 7 00:15:11 EST 2001
| CVS tag: cygwin-1-3-6-5
| Shared id: cygwin1S3
|
|
| Cygwin Package Information
| Package Version
| ash 20011018-1
| autoconf 2.52-5
| autoconf-devel 2.52-4
| autoconf-stable 2.13-4
| automake 1.5a-1
| automake-devel 1.5-5
| automake-stable 1.4p5-5
| bash 2.05a-2
| binutils 20011002-1
| bison 1.28-1
| byacc 0.0
| bzip2 1.0.1-6
| clear 1.0
| cpio 2.4.2
| cron 3.0.1-5
| crypt 1.0-1
| ctags 5.0.1-1
| curl 7.9.1-2
| cvs 1.11.0-1
| cygrunsrv 0.94-2
| cygutils 0.9.7-1
| cygutils-src 0.9.7-1
| cygwin 1.3.6-5
| dejagnu 20010117-1
| diff 0.0
| expect 20010117-1
| file 3.33-1
| fileutils 4.1-1
| findutils 4.1
| flex 2.5.4-1
| gawk 3.0.4-1
| gcc 2.95.3-5
| gdb 20010428-3
| gdbm 1.8.0-3
| gettext 0.10.38-2
| ghostscript 6.51-1
| gperf 0.0
| grep 2.4.2-1
| groff 1.17.2-1
| gzip 1.3.2-1
| indent 2.2.6-2
| inetutils 1.3.2-15
| irc 20010101-1
| jbigkit 1.2-4
| jpeg 6b-4
| less 358-3
| libncurses5 5.2-1
| libncurses6 5.2-2
| libpng 1.0.11-1
| login 1.4-2
| lynx 2.8.4-1
| m4 0.0
| make 3.79.1-5
| man 1.5g-2
| mingw 20010917-1
| mingw-runtime 1.1-1
| mktemp 1.4-1
| mt 2.0.1-1
| mutt 1.2.5i-5
| nano 1.0.6-1
| ncftp 3.0.2-2
| ncurses 5.2-7
| newlib-man 20001118-1
| opengl 1.1.0-5
| openssh 3.0.1p1-2
| openssh-src 3.0.1p1-2
| openssl 0.9.6b-2
| patch 2.5-2
| pcre 3.7-1
| perl 5.6.1-2
| popt 1.6.2-1
| postgresql 7.1.3-1
| python 2.1.1-2
| readline 4.2-3
| regex 4.4-2
| rsync 2.4.6-3
| rxvt 2.7.2-6
| sed 3.02-1
| sh-utils 2.0-2
| sharutils 4.2.1-1
| shutdown 1.2-2
| squid 2.4-STABLE20010508
| ssmtp 2.38.7-3
| tar 1.13.19-1
| tcltk 20001125-1
| tcsh 6.10.00-3
| termcap 20010825-1
| terminfo 5.2-1
| tetex-beta 20001218-1
| texinfo 4.0-5
| textutils 2.0.16-1
| tiff 3.5.6beta-2
| time 1.7-1
| unzip 5.41-1
| vim 6.0.93-1
| w32api 1.1-1
| wget 1.7-1
| which 1.5-1
| xpm-nox 4.1.0-1
| zip 2.3-1
| zlib 1.1.3-6
|
| Use -h to see help about each section
`---
Dave
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