Add "Extract Only" functionality to pc-sysinstall. This allows disk setup to

be done manually, pc-sysinstall is pointed to a mount-point for installation.

PR:	bin/154685
Submitted by:	kmoore
Approved by:	kib (mentor)

usr.sbin/pc-sysinstall/backend/functions.sh

@@ -409,6 +409,7 @@ write_image()
   fi
 };
 
+# Setup and install on a new disk / partition
 install_fresh()
 {
   # Lets start setting up the disk slices now
@@ -458,6 +459,39 @@ install_fresh()
   echo_log "Installation finished!"
 };
 
+# Extract the system to a pre-mounted directory
+install_extractonly()
+{
+  # We are ready to begin extraction, lets start now
+  init_extraction 
+
+  # Check if we have any optional modules to load 
+  install_components
+
+  # Check if we have any packages to install
+  install_packages
+
+  # Do any localization in configuration
+  run_localize
+
+  # Save any networking config on the installed system
+  save_networking_install
+
+  # Now add any users
+  setup_users
+
+  # Now run any commands specified
+  run_commands
+  
+  # Set a hostname on the install system
+  setup_hostname
+      
+  # Set the root_pw if it is specified
+  set_root_pw
+
+  echo_log "Installation finished!"
+};
+
 install_image()
 {
   # We are ready to begin extraction, lets start now
@@ -478,7 +512,7 @@ install_upgrade()
   # Do any localization in configuration
   run_localize
 
-  # ow run any commands specified
+  # Now run any commands specified
   run_commands
   
   # Merge any old configuration files

usr.sbin/pc-sysinstall/backend/parseconfig.sh

@@ -67,11 +67,10 @@ fi
 export CFGF
 
 # Start by doing a sanity check, which will catch any obvious mistakes in the config
-file_sanity_check "installMode disk0 installType installMedium packageType"
+file_sanity_check "installMode installType installMedium packageType"
 
 # We passed the Sanity check, lets grab some of the universal config settings and store them
-check_value installMode "fresh upgrade"
-check_value bootManager "bsd none"
+check_value installMode "fresh upgrade extract"
 check_value installType "PCBSD FreeBSD"
 check_value installMedium "dvd usb ftp rsync image"
 check_value packageType "uzip tar rsync split"
@@ -108,6 +107,16 @@ case "${INSTALLMODE}" in
     fi
     ;;
 
+  extract)
+    # Extracting only, make sure we have a valid target directory
+    get_value_from_cfg installLocation
+    FSMNT="${VAL}" ; export FSMNT
+    if [ -z "$FSMNT" ] ; then exit_err "Missing installLocation=" ; fi
+    if [ ! -d "$FSMNT" ] ; then exit_err "No such directory: $FSMNT" ; fi
+
+    install_extractonly
+    ;;
+
   upgrade)
     install_upgrade
     ;;

usr.sbin/pc-sysinstall/conf/pc-sysinstall.conf

@@ -36,8 +36,8 @@ RSYNCTRIES="3"
 export RSYNCTRIES
 
 # Set our mount-points
-CDMNT="/cdmnt-install"
-FSMNT="/mnt"
+CDMNT=${CDMNT-/cdmnt-install}
+FSMNT=${FSMNT-/mnt}
 UZIP_DIR="/usr"
 BOOT_PART_MOUNT="/boot-mount"
 export FSMNT CDMNT UZIP_DIR BOOT_PART_MOUNT

usr.sbin/pc-sysinstall/examples/README

@@ -12,9 +12,9 @@ installed system
 When hostname= is not present, pc-sysinstall will auto-generate
 a hostname such as freebsd-XXXX or pcbsd-XXXX
 
-# installMode=(fresh or upgrade)
+# installMode=(fresh/upgrade/extract)
 
-Set the type of install we are doing, fresh or upgrade.
+Set the type of install we are doing.
 
 Fresh installs will format and mount the target disks before
 extracting the install images to the system. Using this mode
@@ -27,6 +27,19 @@ The conf/exclude-from-upgrade file can be used to specify
 additional files to exclude from overwriting during the
 install process.
 
+Extract will skip any disk setup, and perform an installation
+to the directory specified by "installLocation=". This location
+should be a directory with your pre-mounted file-systems ready
+for file extraction. When using the "extract" option, /etc/fstab
+on the installed system will *not* be automatically configured. 
+
+# installLocation=
+
+Used only when installMode is set to extract. 
+
+This is set to the location you want to extract your system to,
+and should already be mounted properly. 
+
 # installInteractive=(yes or no)
 
 Set if the installer is running in interactive mode, and
@@ -320,7 +333,7 @@ Run the specified command within chroot of the installed system
 # runScript=
 
 runScript will copy the specified script into FSMNT, and run it in chroot of the system
-Usefull when you have a 3rd party script on the DVD / USB, and you want to copy it into
+Useful when you have a 3rd party script on the DVD / USB, and you want to copy it into
 the installed system and run
 
 # runExtCommand=
@@ -330,7 +343,7 @@ The variable $FSMNT is set to the mount-point of your installed system
 
 
 ########################################################################
-# PC-BSD SPECIFC OPTIONS
+# PC-BSD SPECIFIC OPTIONS
 ########################################################################
 
 Options for time-zones and NTP on the installed system