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From:	"Hannu E K Nevalainen" <garbage_collector AT telia DOT com>
To:	<cygwin AT cygwin DOT com>
Subject:	RE: cygpath hangs from postinstall scripts when called like $(cygpath -S) but not otherwise
Date:	Mon, 6 Oct 2003 12:09:29 +0200
Message-ID:	<NGBBLLIAMFLGJEOAJCCEGEONDEAA.garbage_collector@telia.com>
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> From: Igor Pechtchanski
> Sent: Monday, October 06, 2003 1:44 AM

> It would be easy to check if the above was the reason for the hang by
> trying to call the following program from a postinstall script and seeing
> if it also hangs:

It doesn't hang. :-I

/Hannu E K Nevalainen, B.Sc. EE - 59?16.37'N, 17?12.60'E
-- UTC+01, DST -> UTC+02  --


$ pwd
/home/Hannu/tc

$ for f in *.{c,sh} ;do echo --- $f ---;cat $f ;done
--- tapp.c ---
int hello();
int main() {
  printf("%d\n", hello());
  printf("%d\n", hello());
}
--- tdll.c ---
#include <stdio.h>
static int counter = 0;
int hello() {
  fprintf (stderr, "");  /* to pull in msvcrt.dll */
  return counter++;
}
--- create_tap.sh ---
#!/bin/bash -x
gcc -mno-cygwin -shared -g -o tdll.dll tdll.c
gcc -g -o tapp.exe tapp.c -L./ -ltdll
if [ -r tapp.exe ] ; then
        cygcheck tapp.exe
        ./tapp.exe
fi

$ create_tap.sh
+ gcc -mno-cygwin -shared -g -o tdll.dll tdll.c
+ gcc -g -o tapp.exe tapp.c -L./ -ltdll
+ '[' -r tapp.exe ']'
+ cygcheck tapp.exe
Found: .\tapp.exe
tapp.exe
  C:\Program\cygwin\bin\cygwin1.dll
    F:\WINNT\system32\KERNEL32.dll
      F:\WINNT\system32\NTDLL.DLL
  .\tdll.dll
    F:\WINNT\system32\msvcrt.dll
+ ./tapp.exe
0
1

$ ls -l
total 32
-rwxr-xr-x    1 Hannu         161 Oct  6 11:24 create_tap.sh*
-rw-r--r--    1 Hannu          91 Oct  6 11:23 tapp.c
-rwxr-xr-x    1 Hannu       13623 Oct  6 11:42 tapp.exe*
-rw-r--r--    1 Hannu         138 Oct  6 11:07 tdll.c
-rwxr-xr-x    1 Hannu       14652 Oct  6 11:42 tdll.dll*

$ md5sum -b *.exe *.dll
9a9ea252c5dc91725f389f0c0c013165 *tapp.exe
fd013cf1b8d03a4a0243eb75e44d8198 *tdll.dll

$ cygstart /install/setup.exe &
[1] 2316

$ tail /var/log/setup.log.full
2003/10/06 11:40:25 xinetd
2003/10/06 11:40:25 xmlto
2003/10/06 11:40:25 xpm-nox
2003/10/06 11:40:25 zip
2003/10/06 11:40:25 zsh
2003/10/06 11:40:25 running: C:\Program\cygwin\bin\sh.exe -c
/etc/postinstall/tc.sh
0
1
2003/10/06 11:40:28 mbox note: Nothing needed to be installed
2003/10/06 11:40:29 Ending cygwin install
[1]+  Done                    cygstart /install/setup.exe



-- the cygpath hang once more, i.e. still there --

$ cygstart /install/setup.exe &
[1] 2248
<click through all defaults and "install from local dir">

$ ps
      PID    PPID    PGID     WINPID  TTY  UID    STIME COMMAND
     1636       1    1636       1080  con  500 11:06:44 /usr/bin/rxvt
     1068    1636    1068        872    0  500 11:06:44 /usr/bin/bash
      112       1     112        112  con  500 11:55:34 /usr/bin/sh
I    2352     112     112       2352  con  500 11:55:34 /usr/bin/bash
     2344    2352     112       2344  con  500 11:55:35 /usr/bin/cygpath
     1252    1068    1252       2364    0  500 11:55:50 /usr/bin/ps
[1]+  Done                    cygstart /install/setup.exe

<cygpath hang>
$ kill -9 2344

<setup finishes>
$ ps
      PID    PPID    PGID     WINPID  TTY  UID    STIME COMMAND
     1636       1    1636       1080  con  500 11:06:44 /usr/bin/rxvt
     1068    1636    1068        872    0  500 11:06:44 /usr/bin/bash
     1292    1068    1292       2340    0  500 11:58:36 /usr/bin/ps

$ tail /var/log/setup.log.full
2003/10/06 11:55:33 xpm-nox
2003/10/06 11:55:33 zip
2003/10/06 11:55:33 zsh
2003/10/06 11:55:34 running: C:\Program\cygwin\bin\sh.exe -c
/etc/postinstall/t2.sh
++ cygpath -A -P
+ TOPFOLDER=/Cygwin-XFree86
+ echo /Cygwin-XFree86
/Cygwin-XFree86
2003/10/06 11:56:15 mbox note: Nothing needed to be installed
2003/10/06 11:56:16 Ending cygwin install

$ mv /etc/postinstall/t2.sh.done /etc/postinstall/t2.sh

$ cat /etc/postinstall/t2.sh
#!/bin/bash -x

TOPFOLDER="`cygpath -A -P`/Cygwin-XFree86"
echo $TOPFOLDER

$

--END OF MESSAGE--


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