[archiso] Use a mount handler in archiso_pxe_nbd hook

* Register a mount_hook if booted via PXE. This allows to do all needed
steps before and after calling archiso_mount_handler.

* umount and disconnect network device if copytoram=y

Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>

1 files changed, 29 insertions, 13 deletions

diff --git a/archiso/hooks/archiso_pxe_nbd b/archiso/hooks/archiso_pxe_nbd
index 9df5a95..2d4163e 100644
--- a/archiso/hooks/archiso_pxe_nbd
+++ b/archiso/hooks/archiso_pxe_nbd
@@ -1,6 +1,5 @@
 # vim: set ft=sh:
-run_hook ()
-{
+run_hook () {
     local line i address netmask gateway dns0 dns1 rootserver rootpath filename
 
     : > /ip_opts
@@ -45,19 +44,36 @@ run_hook ()
         echo "IP-Config: ${address}/${netmask}"
         echo "IP-Config: gw: ${gateway}    dns0: ${dns0}    dns1: ${dns1}"
 
-        modprobe nbd 2> /dev/null
+        nbdserver=${rootserver}
 
-        msg ":: Waiting for boot device..."
-        while ! poll_device /dev/nbd0 10; do
-            echo "ERROR: boot device didn't show up after 10 seconds..."
-            echo "   Falling back to interactive prompt"
-            echo "   You can try to fix the problem manually, log out when you are finished"
-            launch_interactive_shell
-        done
+        mount_handler="archiso_pxe_nbd_mount_handler"
+    fi
+}
+
+archiso_pxe_nbd_mount_handler () {
+    newroot="${1}"
+
+    # Module autoloading like with loop devices does not work, doing manually...
+    modprobe nbd 2> /dev/null
+    while [ ! -b /dev/nbd0 ]; do
+        sleep 1
+    done
+
+    msg "::: Setup NBD from ${nbdserver}:9040 at /dev/nbd0"
+    if [ "${copytoram}" = "y" ]; then
+        nbd-client ${nbdserver} 9040 /dev/nbd0
+    else
+        nbd-client ${nbdserver} 9040 /dev/nbd0 -persist
+    fi
+
+    archisodevice=/dev/nbd0
 
-        msg "::: Setup NBD from ${rootserver}:9040 at /dev/nbd0 ..."
-        nbd-client ${rootserver} 9040 /dev/nbd0 -persist
+    archiso_mount_handler ${newroot}
 
-        archisodevice=/dev/nbd0
+    if [ "${copytoram}" = "y" ]; then
+        umount ${newroot}/bootmnt
+        umount /bootmnt
+        msg "::: Disconnect NBD from ${nbdserver}:9040 at /dev/nbd0"
+        nbd-client -d /dev/nbd0
     fi
 }