Guide du développeur pour l'empaquetage d'applications

Script d'action de classe

Le script d'action de classe crée une copie de chaque fichier de remplacement et ajoute une ligne correspondante dans le fichier prototype pour le package de désinstallation. Ces opérations sont effectuées à l'aide de scripts nawk relativement simples. Le script d'action de classe reçoit une liste de paires source/destination comprenant des fichiers ordinaires qui ne correspondent pas aux fichiers installés. Les liens symboliques et éléments autres que des fichiers doivent être traités dans le script preinstall.

# This class action script copies the files being replaced
# into a package being constructed in $BUILD_DIR. This class
# action script is only appropriate for regular files that
# are installed by simply copying them into place.
#
# For special package objects such as editable files, the patch
# producer must supply appropriate class action scripts.
#
# directory format options.
#
#       @(#)i.script 1.6 96/05/10 SMI
#
# Copyright (c) 1995 by Sun Microsystems, Inc.
# All rights reserved
#
 
PATH=/usr/sadm/bin:$PATH
 
ECHO="/usr/bin/echo"
SED="/usr/bin/sed"
PKGPROTO="/usr/bin/pkgproto"
EXPR="/usr/bin/expr"    # used by dirname
MKDIR="/usr/bin/mkdir"
CP="/usr/bin/cp"
RM="/usr/bin/rm"
MV="/usr/bin/mv"
 
recovery="no"
Pn=$$
procIdCtr=0
 
CMDS_USED="$ECHO $SED $PKGPROTO $EXPR $MKDIR $CP $RM $MV"
LIBS_USED=""
 
if [ "$PKG_INSTALL_ROOT" = "/" ]; then
        PKG_INSTALL_ROOT=""
fi
 
# Check to see if this is a patch installation retry.
if [ "$INTERRUPTION" = "yes" ]; then
        if [ -d "$PKG_INSTALL_ROOT/var/tmp/$Patch_label.$PKGINST" ] || 
\
[ -d "$PATCH_BUILD_DIR/$Patch_label.$PKGINST" ]; then
                recovery="yes"
        fi
fi
 
if [ -n "$PATCH_BUILD_DIR" -a -d "$PATCH_BUILD_DIR" ]; then
        BUILD_DIR="$PATCH_BUILD_DIR/$Patch_label.$PKGINST"
else
        BUILD_DIR="$PKG_INSTALL_ROOT/var/tmp/$Patch_label.$PKGINST"
fi
 
FILE_DIR=$BUILD_DIR/files
RELOC_DIR=$FILE_DIR/reloc
ROOT_DIR=$FILE_DIR/root
BO_Deletes=$FILE_DIR/deletes
PROGNAME=`basename $0`
 
if [ "$PATCH_PROGRESSIVE" = "true" ]; then
        PATCH_NO_UNDO="true"
fi
 
# Since this is generic, figure out the class.
Class=`echo $PROGNAME | nawk ' { print substr($0, 3)  }'`
 
# Since this is an update, $BASEDIR is guaranteed to be correct
BD=${BASEDIR:-/}
 
cd $BD
 
#
# First, figure out the dynamic libraries that can trip us up.
#
if [ -z "$PKG_INSTALL_ROOT" ]; then
        if [ -x /usr/bin/ldd ]; then
                LIB_LIST=`/usr/bin/ldd $CMDS_USED | sort -u | nawk '
                        $1 ~ /\// { continue; }
                        { printf "%s ", $3 } '`
        else
                LIB_LIST="/usr/lib/libc.so.1 /usr/lib/libdl.so.1 
\
/usr/lib/libw.so.1 /usr/lib/libintl.so.1 /usr/lib/libadm.so.1 \
/usr/lib/libelf.so.1"
        fi
fi
 
#
# Now read the list of files in this class to be replaced. If the file
# is already in place, then this is a change and we need to copy it
# over to the build directory if undo is allowed. If it's a new entry
# (No $dst), then it goes in the deletes file for the backout package.
#
procIdCtr=0
while read src dst; do
        if [ -z "$PKG_INSTALL_ROOT" ]; then
                Chk_Path=$dst
                for library in $LIB_LIST; do
                        if [ $Chk_Path = $library ]; then
                                $CP $dst $dst.$Pn
                                LIBS_USED="$LIBS_USED $dst.$Pn"
                                LD_PRELOAD="$LIBS_USED"
                                export LD_PRELOAD
                        fi
                done
        fi
 
        if [ "$PATCH_PROGRESSIVE" = "true" ]; then
                # If this is being used in an old-style patch, insert
                # the old-style script commands here.
 
                #XXXOld_CommandsXXX#
                echo >/dev/null # dummy
        fi
 
        if [ "${PATCH_NO_UNDO}" != "true" ]; then
                #
                # Here we construct the path to the appropriate source
                # tree for the build. First we try to strip BASEDIR. If
                # there's no BASEDIR in the path, we presume that it is
                # absolute and construct the target as an absolute path
                # by stripping PKG_INSTALL_ROOT. FS_Path is the path to
                # the file on the file system (for deletion purposes).
                # Build_Path is the path to the object in the build
                # environment.
                #
                if [ "$BD" = "/" ]; then
                        FS_Path=`$ECHO $dst | $SED s@"$BD"@@`
                else
                        FS_Path=`$ECHO $dst | $SED s@"$BD/"@@`
                fi
 
                # If it's an absolute path the attempt to strip the
                # BASEDIR will have failed.
                if [ $dst = $FS_Path ]; then
                        if [ -z "$PKG_INSTALL_ROOT" ]; then
                                FS_Path=$dst
                                Build_Path="$ROOT_DIR$dst"
                        else
                                Build_Path="$ROOT_DIR`echo $dst | \
                                    sed s@"$PKG_INSTALL_ROOT"@@`"
                                FS_Path=`echo $dst | \
                                    sed s@"$PKG_INSTALL_ROOT"@@`
                        fi
                else
                        Build_Path="$RELOC_DIR/$FS_Path"
                fi
 
                if [ -f $dst ]; then    # If this is replacing something
                        cd $FILE_DIR
                        #
                        # Construct the prototype file entry. We replace
                        # the pointer to the filesystem object with the
                        # build directory object.
                        #
                        $PKGPROTO -c $Class $dst=$FS_Path | \
                            $SED -e s@=$dst@=$Build_Path@ >> \
                            $BUILD_DIR/prototype
 
                        # Now copy over the file
                        if [ "$recovery" = "no" ]; then
                                DirName=`dirname $Build_Path`
                                $MKDIR -p $DirName
                                $CP -p $dst $Build_Path
                        else
                                # If this file is already in the build area skip it
                                if [ -f "$Build_Path" ]; then
                                        cd $BD
                                        continue
                                else
                                        DirName=`dirname $Build_Path`
                                        if [ ! -d "$DirName" ]; then
                                                $MKDIR -p $DirName
                                        fi
                                        $CP -p $dst $Build_Path
                                fi        
                        fi
 
                        cd $BD
                else    # It's brand new
                        $ECHO $FS_Path >> $BO_Deletes
                fi
        fi
 
        # If special processing is required for each src/dst pair,
        # add that here.
        #
        #XXXSpecial_CommandsXXX#
        #
 
        $CP $src $dst.$$$procIdCtr
        if [ $? -ne 0 ]; then
                $RM $dst.$$$procIdCtr 1>/dev/null 2>&1
        else
                $MV -f $dst.$$$procIdCtr $dst
                for library in $LIB_LIST; do
                        if [ "$library" = "$dst" ]; then
                                LD_PRELOAD="$dst"
                                export LD_PRELOAD
                        fi
                done
        fi                       
        procIdCtr=`expr $procIdCtr + 1`
done      
 
# If additional operations are required for this package, place
# those package-specific commands here.
 
#XXXSpecial_CommandsXXX#
 
#
# Release the dynamic libraries
#
for library in $LIBS_USED; do
        $RM -f $library
done
 
exit 0