1 files changed, 128 insertions, 0 deletions
diff --git a/modules.d/95nfs/parse-nfsroot.sh b/modules.d/95nfs/parse-nfsroot.sh
new file mode 100755
index 0000000..0c8dbbb
--- /dev/null
+++ b/modules.d/95nfs/parse-nfsroot.sh
@@ -0,0 +1,128 @@
+#!/bin/sh
+#
+# Preferred format:
+#       root=nfs[4]:[server:]path[:options]
+#
+# This syntax can come from DHCP root-path as well.
+#
+# Legacy format:
+#       root=/dev/nfs nfsroot=[server:]path[,options]
+#
+# In Legacy root=/dev/nfs mode, if the 'nfsroot' parameter is not given
+# on the command line or is empty, the dhcp root-path is used as
+# [server:]path[:options] or the default "/tftpboot/%s" will be used.
+#
+# If server is unspecified it will be pulled from one of the following
+# sources, in order:
+#       static ip= option on kernel command line
+#       DHCP next-server option
+#       DHCP server-id option
+#       DHCP root-path option
+#
+# NFSv4 is only used if explicitly requested with nfs4: prefix, otherwise
+# NFSv3 is used.
+#
+
+type getarg > /dev/null 2>&1 || . /lib/dracut-lib.sh
+. /lib/nfs-lib.sh
+
+# This script is sourced, so root should be set. But let's be paranoid
+[ -z "$root" ] && root=$(getarg root=)
+[ -z "$nfsroot" ] && nfsroot=$(getarg nfsroot=)
+
+[ -n "$netroot" ] && oldnetroot="$netroot"
+
+# netroot= cmdline argument must be ignored, but must be used if
+# we're inside netroot to parse dhcp root-path
+if [ -n "$netroot" ]; then
+    for n in $(getargs netroot=); do
+        [ "$n" = "$netroot" ] && break
+    done
+    if [ "$n" = "$netroot" ]; then
+        #warn "Ignoring netroot argument for NFS"
+        netroot=$root
+    fi
+else
+    netroot=$root
+fi
+
+# LEGACY: nfsroot= is valid only if root=/dev/nfs
+if [ -n "$nfsroot" ]; then
+    # @deprecated
+    warn "Argument nfsroot is deprecated and might be removed in a future release. See 'man dracut.kernel' for more information."
+    if [ "$(getarg root=)" != "/dev/nfs" ]; then
+        die "Argument nfsroot only accepted for legacy root=/dev/nfs"
+    fi
+    netroot=nfs:$nfsroot
+fi
+
+case "$netroot" in
+    /dev/nfs) netroot=nfs ;;
+    /dev/*)
+        if [ -n "$oldnetroot" ]; then
+            netroot="$oldnetroot"
+        else
+            unset netroot
+        fi
+        return
+        ;;
+    # LEGACY: root=<server-ip>:/<path
+    [0-9]*:/* | [0-9]*\.[0-9]*\.[0-9]*[!:] | /*)
+        netroot=nfs:$netroot
+        ;;
+esac
+
+# Continue if nfs
+case "${netroot%%:*}" in
+    nfs | nfs4 | /dev/nfs) ;;
+    *)
+        if [ -n "$oldnetroot" ]; then
+            netroot="$oldnetroot"
+        else
+            unset netroot
+        fi
+        return
+        ;;
+esac
+
+# Check required arguments
+
+if nfsdomain=$(getarg rd.nfs.domain -d rd_NFS_DOMAIN); then
+    if [ -f /etc/idmapd.conf ]; then
+        sed -i -e \
+            "s/^[[:space:]#]*Domain[[:space:]]*=.*/Domain = $nfsdomain/g" \
+            /etc/idmapd.conf
+    fi
+    # and even again after the sed, in case it was not yet specified
+    echo "Domain = $nfsdomain" >> /etc/idmapd.conf
+fi
+
+nfsroot_to_var "$netroot"
+[ "$path" = "error" ] && die "Argument nfsroot must contain a valid path!"
+
+# Set fstype, might help somewhere
+fstype=${nfs#/dev/}
+
+# Rewrite root so we don't have to parse this ugliness later on again
+netroot="$fstype:$server:$path:$options"
+
+# If we don't have a server, we need dhcp
+if [ -z "$server" ]; then
+    # shellcheck disable=SC2034
+    DHCPORSERVER="1"
+fi
+
+# Done, all good!
+# shellcheck disable=SC2034
+rootok=1
+
+# Shut up init error check or make sure that block parser won't get
+# confused by having /dev/nfs[4]
+root="$fstype"
+
+# shellcheck disable=SC2016
+echo '[ -e $NEWROOT/proc ]' > "$hookdir"/initqueue/finished/nfsroot.sh
+
+mkdir -p /var/lib/rpcbind
+chown rpc:rpc /var/lib/rpcbind
+chmod 770 /var/lib/rpcbind