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# vim: set ft=sh:
run_hook ()
{
local line defaultrootpath defaultserver
# These variables will be parsed from /tmp/net-*.conf generated by ipconfig
local DEVICE
local IPV4ADDR IPV4BROADCAST IPV4NETMASK IPV4GATEWAY IPV4DNS0 IPV4DNS1
local HOSTNAME DNSDOMAIN NISDOMAIN ROOTSERVER ROOTPATH
local filename
# /tmp/net-*.conf
if [ -z "${ip}" -a -n "${nfsaddrs}" ]; then
ip="${nfsaddrs}"
fi
if [ -n "${ip}" ]; then
# setup network and save some values
ipconfig "ip=${ip}"
. /tmp/net-*.conf
# calculate nfs_server, nfs_path and nfs_option for later nfs mount
if [ "${root}" = "/dev/nfs" -o "${nfsroot}" != "" ]; then
# parse ROOTPATH if defined by dhcp server
if [ -n "${ROOTPATH}" ]; then
line="${ROOTPATH}"
nfs_server="${line%%:*}"
[ "${nfs_server}" = "${line}" ] && nfs_server="${ROOTSERVER}"
defaultserver="${nfs_server}"
line="${line#*:}"
nfs_path="${line}"
defaultrootpath="${nfs_path}"
else
# define a default ROOTPATH
if [ "${ROOTPATH}" = "" ]; then
defaultrootpath="/tftpboot/${IPV4ADDR}"
fi
fi
# parse nfsroot if present (overrides ROOTPATH)
if [ -n "${nfsroot}" ]; then
line="${nfsroot}"
nfs_server="${line%%:*}"
[ -z "${nfs_server}" ] && nfs_server="${defaultserver}"
line="${line#*:}"
nfs_path="${line%%,*}"
line="${line#"${nfs_path}"}"
[ -z "${nfs_path}" ] && nfs_path="${defaultrootpath}"
nfs_option="${line#","}"
fi
# ensure root and filesystem type are set proper for nfs boot
root="/dev/nfs"
rootfstype="nfs"
echo "NFS-Mount: ${nfs_server}:${nfs_path}"
# set mount handler for NFS
mount_handler="nfs_mount_handler"
fi
fi
}
nfs_mount_handler() {
if [ -z "$nfs_server" -o -z "$nfs_path" ]; then
err "Unable to mount root filesystem over NFS: wrong parameters."
echo "You are being dropped to a recovery shell"
echo " Type 'exit' to try and continue booting"
launch_interactive_shell
msg "Trying to continue (this will most likely fail) ..."
fi
nfsmount ${nfs_option:+-o ${nfs_option}} "${nfs_server}:${nfs_path}" "$1"
}
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