Hi,
[ From: http://defect.opensolaris.org/bz/show_bug.cgi?id=15179 ]
I tried to install Acrobat Reader 9.3.1 on OpenSolaris dev build 134,
but it fails in the middle of adobe's install script.
Adobes install script enters an endless recursion with ksh93,
but works ok with /usr/has/bin/sh.
The following script reproduces the problem; it fails with ksh93,
but works with bourne shell:
% cat /tmp/acro.sh
GetAbsoluteFileName()
{
if [ -h "$1" ]
then
CURRENT_PATH=`pwd`
cd `dirname $1`
COMPLETE_PATH=`ls -l $1 | awk '{ print $NF }'`
COMPLETE_PATH_DIR=`dirname $COMPLETE_PATH`
COMPLETE_PATH_FILE=`basename $COMPLETE_PATH`
cd $COMPLETE_PATH_DIR
COMPLETE_PATH_DIR=`pwd`
cd "$CURRENT_PATH"
GetAbsoluteFileName ${COMPLETE_PATH_DIR}/${COMPLETE_PATH_FILE}
else
echo "$1"
return 0
fi
}
GetAbsoluteFileName /bin/firefox
% /usr/has/bin/sh /tmp/acro.sh
/usr/lib/firefox/firefox
Ok.
But with ksh93 this ends in an endless recursion and core dumps ksh93.
% /bin/sh -x /tmp/acro.sh |& more
+ GetAbsoluteFileName /bin/firefox
+ [ -h /bin/firefox ]
+ pwd
+ CURRENT_PATH=/tmp
+ dirname /bin/firefox
+ cd /bin <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
+ ls -l /bin/firefox
+ awk '{ print $NF }'
+ COMPLETE_PATH=../lib/firefox/firefox
+ dirname ../lib/firefox/firefox
+ COMPLETE_PATH_DIR=../lib/firefox
+ basename ../lib/firefox/firefox
+ COMPLETE_PATH_FILE=firefox
+ cd ../lib/firefox <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
/tmp/acro.sh[10]: cd: ../lib/firefox: [No such file or directory]
+ pwd
+ COMPLETE_PATH_DIR=/bin
+ cd /tmp
+ GetAbsoluteFileName /bin/firefox
....
So, the question is: why doesn't "cd ../lib/firefox" work
with ksh93 from the "/bin" directory?
% truss -t chdir /bin/sh /tmp/acro.sh
Received signal #18, SIGCLD, in waitid() [caught]
siginfo: SIGCLD CLD_EXITED pid=7545 status=0x0000
chdir("/bin") = 0
Received signal #18, SIGCLD, in waitid() [caught]
siginfo: SIGCLD CLD_EXITED pid=7546 status=0x0000
Received signal #18, SIGCLD [caught]
siginfo: SIGCLD CLD_EXITED pid=7549 status=0x0000
Received signal #18, SIGCLD [caught]
siginfo: SIGCLD CLD_EXITED pid=7550 status=0x0000
chdir("/lib/firefox") Err#2 ENOENT
/tmp/acro.sh[13]: cd: ../lib/firefox: [No such file or directory]
Why does ksh93 use a chdir to "/lib/firefox", and not "../lib/firefox" ?
