cygpath -pw output is corrupt for long path names
Daniel Steinmann
daniel.steinmann@insonic.com
Tue Oct 29 13:57:00 GMT 2002
When I use cygpath -pw for a unix path with a lot of directory
components for each entry in the path, I get corrupted output.
Here is an example usage (see also attached cygcheck -s output):
$ pwd
/tmp/this/is/a/very/long/directory/path/enterprise/modules/base
$ cygpath -pw
:/c/programs/jdk1.3.1_04/jre/lib/rt.jar:../../lib/fso.jar:../../lib/vcom.jar:../../lib/vcomsc.jar:../../lib/log4j-1.2.5.jar
;c:\programs\jdk1.3.1_04\jre\lib\rt.jar;C:\programs\cygwin\tmp\this\is\a\very\long\directory\path\enterprise\lib\fso.jar;C:\programs\cygwin\tmp\this\is\a\very\long\directory\path\enterprise\lib\vcom.jar;C:\programs\cygwin\tmp\this\is\a\very\long\directory\path\enterprise\lib\vcomsc.jar;C:\programs\cygwin\tmp\this\is\a\very\long\directory\path\enterprise ? log4j-1.2.5.jar
(Note the spaces and the question mark before log4j-1.2.5.jar)
After running this in gdb with the latest sources from CVS I can
explain this behaviour like this: In cygpath.cc the function
conv_path_list_buf_size() from path.cc gets indirectly invoked. This
function uses the member native_pathlen from the mount table to
compute the size of memory needed for this path. My mount table
looks like this:
$19 = {version = 12767, cb = 16488, sys_mount_table_counter = 0, nmounts = 6,
mount = {{native_path = "\\\\eagle\\data", '\000' <repeats 247 times>,
native_pathlen = 12, posix_path = "/data", '\000' <repeats 254 times>,
posix_pathlen = 5, flags = 2}, {
native_path = "\\\\eagle\\voice", '\000' <repeats 246 times>,
native_pathlen = 13, posix_path = "/voice", '\000' <repeats 253 times>,
posix_pathlen = 6, flags = 2},
<snip>
It seems that nativ_pathlen does not count the escape backslashes
(e.g. '\\\\eagle\\voice' has 16 characters with 3 escape
backslashes, but nativ_pathlen is 13). This is not a problem as long
as the path is short because conv_path_list_buf_size() adds always
100 to the computed size of memory. But in my test case this is not
enough.
Am I missing something or is my analysis so far correct?
Daniel.
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Cygwin Win95/NT Configuration Diagnostics
Current System Time: Tue Oct 29 19:34:37 2002
Windows 2000 Professional Ver 5.0 Build 2195 Service Pack 3
Path: d:\home-stonie\bin
C:\programs\cygwin\usr\local\bin
C:\programs\cygwin\bin
C:\programs\cygwin\bin
c:\WINNT\system32
c:\WINNT
c:\WINNT\System32\Wbem
c:\Program Files\Support Tools\
c:\Program Files\Resource Kit\
C:\programs\cygwin\bin
c:\programs\tools
c:\programs\oracle\ora81\bin
c:\programs\nuance\v7.0.4\bin\win32
c:\programs\nuance\v7.0.4\scripts
C:\programs\cygwin\usr\X11R6\bin
d:\home-stonie\tools\sysinternals\pstools
c:\programs\j2sdk1.4.0_02\bin
SysDir: C:\WINNT\System32
WinDir: C:\WINNT
CYGWIN = `binmode ntsec nosmbntsec notty'
HOME = `d:\home-stonie'
MAKE_MODE = `unix'
PWD = `/d/home-stonie'
USER = `stonie'
Use `-r' to scan registry
a: fd N/A N/A
c: hd NTFS 8001Mb 66% CP CS UN PA FC System
d: hd NTFS 11068Mb 18% CP CS UN PA FC Data
e: cd N/A N/A
\\eagle\data /data user binmode
\\eagle\voice /voice user binmode
/ user binmode,cygdrive
C:/programs/cygwin / system binmode
d:\home-stonie /home/stonie system binmode
C:/programs/cygwin/bin /usr/bin system binmode
C:/programs/cygwin/lib /usr/lib system binmode
/ user binmode,cygdrive
Found: C:\programs\cygwin\bin\bash.exe
Found: C:\programs\cygwin\bin\cat.exe
Found: C:\programs\cygwin\bin\cpp.exe
Found: C:\programs\cygwin\bin\find.exe
Found: C:\programs\cygwin\bin\gcc.exe
Found: C:\programs\cygwin\bin\gdb.exe
Found: C:\programs\cygwin\bin\ld.exe
Found: C:\programs\cygwin\bin\ls.exe
Found: C:\programs\cygwin\bin\make.exe
Found: C:\programs\cygwin\bin\sh.exe
58k 2002/05/07 C:\programs\cygwin\bin\cygbz2-1.dll
6k 2002/06/24 C:\programs\cygwin\bin\cygcharset-1.dll
625k 2002/08/09 C:\programs\cygwin\bin\cygcrypto.dll
45k 2001/04/25 C:\programs\cygwin\bin\cygform5.dll
35k 2002/01/09 C:\programs\cygwin\bin\cygform6.dll
19k 2002/02/20 C:\programs\cygwin\bin\cyggdbm.dll
17k 2001/06/28 C:\programs\cygwin\bin\cyghistory4.dll
20k 2002/10/10 C:\programs\cygwin\bin\cyghistory5.dll
929k 2002/06/24 C:\programs\cygwin\bin\cygiconv-2.dll
22k 2001/12/13 C:\programs\cygwin\bin\cygintl-1.dll
28k 2002/09/20 C:\programs\cygwin\bin\cygintl-2.dll
21k 2001/06/20 C:\programs\cygwin\bin\cygintl.dll
45k 2002/02/08 C:\programs\cygwin\bin\cygjbig1.dll
119k 2002/02/09 C:\programs\cygwin\bin\cygjpeg6b.dll
59k 2002/09/20 C:\programs\cygwin\bin\cygkpathsea-3-3-7.dll
26k 2001/04/25 C:\programs\cygwin\bin\cygmenu5.dll
20k 2002/01/09 C:\programs\cygwin\bin\cygmenu6.dll
156k 2001/04/25 C:\programs\cygwin\bin\cygncurses++5.dll
175k 2002/01/09 C:\programs\cygwin\bin\cygncurses++6.dll
226k 2001/04/25 C:\programs\cygwin\bin\cygncurses5.dll
202k 2002/01/09 C:\programs\cygwin\bin\cygncurses6.dll
15k 2001/04/25 C:\programs\cygwin\bin\cygpanel5.dll
12k 2002/01/09 C:\programs\cygwin\bin\cygpanel6.dll
40k 2001/11/21 C:\programs\cygwin\bin\cygpcre.dll
39k 2001/11/21 C:\programs\cygwin\bin\cygpcreposix.dll
175k 2002/07/22 C:\programs\cygwin\bin\cygpng10.dll
179k 2002/07/22 C:\programs\cygwin\bin\cygpng12.dll
170k 2002/01/21 C:\programs\cygwin\bin\cygpng2.dll
22k 2002/06/09 C:\programs\cygwin\bin\cygpopt-0.dll
108k 2001/06/28 C:\programs\cygwin\bin\cygreadline4.dll
127k 2002/10/10 C:\programs\cygwin\bin\cygreadline5.dll
66k 2001/11/20 C:\programs\cygwin\bin\cygregex.dll
159k 2002/08/09 C:\programs\cygwin\bin\cygssl.dll
549k 2002/07/19 C:\programs\cygwin\bin\cygtcl83.dll
11k 2002/07/19 C:\programs\cygwin\bin\cygtclpip83.dll
253k 2002/02/10 C:\programs\cygwin\bin\cygtiff3.dll
221k 2002/07/19 C:\programs\cygwin\bin\cygtix4183.dll
830k 2002/07/19 C:\programs\cygwin\bin\cygtk83.dll
904k 2002/10/14 C:\programs\cygwin\bin\cygwin1-orig.dll
41k 2002/01/20 C:\programs\cygwin\bin\cygXpm-noX4.dll
46k 2002/01/20 C:\programs\cygwin\bin\cygXpm-X4.dll
50k 2002/03/12 C:\programs\cygwin\bin\cygz.dll
905k 2002/10/23 C:\programs\cygwin\bin\cygwin1.dll
Cygwin DLL version info:
DLL version: 1.3.14
DLL epoch: 19
DLL bad signal mask: 19005
DLL old termios: 5
DLL malloc env: 28
API major: 0
API minor: 62
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: Wed Oct 23 14:47:14 EDT 2002
Shared id: cygwin1S3
Cygwin Package Information
Package Version
_update-info-dir 00077-1
ash 20020731-1
autoconf 2.53b-1
autoconf-devel 2.53a-1
autoconf-stable 2.13-4
automake 1.6.2-1
automake-devel 1.6.2-1
automake-stable 1.4p5-5
base-files 1.0-1
base-passwd 1.0-1
bash 2.05b-5
bc 1.06-1
binutils 20020706-2
bison 1.35-1
bzip2 1.0.2-2
ccache 1.9-1
clear 1.0-1
cpio 2.4.2
cron 3.0.1-7
crypt 1.0-1
ctags 5.2-1
cvs 1.11.0-1
cygrunsrv 0.95-1
cygutils 1.1.2-1
cygwin 1.3.14-1
cygwin-doc 1.2-1
dejagnu 20010117-1
diff 1.0-1
diffutils 2.8.1-1
ed 0.2-1
enscript 1.6.3-3
exim 4.10-2
expect 20010117-1
fetchmail 6.1.0-1
figlet 2.2-1
file 3.37-1
fileutils 4.1-1
findutils 4.1.7-4
flex 2.5.4-2
fortune 1.8-2
gawk 3.1.1-5
gcc 3.2-1
gdb 20020718-1
gdbm 1.8.0-4
gettext 0.11.5-1
ghostscript 7.05-1
ghostscript-base 7.05-1
gnugo 3.2-1
gperf 0.0
grep 2.5-1
groff 1.17.2-1
gzip 1.3.3-4
indent 2.2.8-1
inetutils 1.3.2-19
irc 20010101-1
jbigkit 1.2-6
jpeg 6b-7
keychain 1.9-1
less 374-1
libbz2_1 1.0.2-2
libcharset1 1.8-2
libiconv 1.8-2
libiconv2 1.8-2
libintl 0.10.38-3
libintl1 0.10.40-1
libintl2 0.11.5-1
libkpathsea3 20020911-1
libncurses5 5.2-1
libncurses6 5.2-8
libpng 1.2.4-2
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links 0.96-1
login 1.4-4
lynx 2.8.4-1
m4 0.0
make 3.79.1-7
man 1.5g-2
mingw 20010917-1
mingw-runtime 2.2-1
mktemp 1.4-1
more 2.11o-1
mt 2.0.1-1
mutt 1.4-1
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ncftp 3.1.4-1
ncurses 5.2-8
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openssh 3.4p1-5
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python 2.2.1-1
rcs 5.7-3
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regex 4.4-2
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rsync 2.5.5-1
rxvt 2.7.2-14
sed 3.02-1
sh-utils 2.0-2
sharutils 4.2.1-2
shutdown 1.2-2
ssmtp 2.38.7-3
tar 1.13.25-1
tcltk 20001125-1
tcsh 6.11.00-4
termcap 20020930-1
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texinfo 4.2-4
textutils 2.0.21-1
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tiff 3.5.7-1
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ttcp 19980512-1
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unzip 5.50-1
vim 6.1-2
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zlib 1.1.4-1
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