From d580636e97bffdd17124961e2f9db0aa2a645060 Mon Sep 17 00:00:00 2001

From: Mike Gorse <mgorse@suse.com>

Date: Thu, 26 Jul 2012 09:17:18 -0500

Subject: [PATCH] Added cifs

---

 dracut.cmdline.7.asc               | 15 +++++++++++

 modules.d/95cifs/cifs-lib.sh       | 36 ++++++++++++++++++++++++++

 modules.d/95cifs/cifsroot.sh       | 26 +++++++++++++++++++

 modules.d/95cifs/module-setup.sh   | 46 +++++++++++++++++++++++++++++++++

 modules.d/95cifs/parse-cifsroot.sh | 52 ++++++++++++++++++++++++++++++++++++++

 5 files changed, 175 insertions(+)

 create mode 100755 modules.d/95cifs/cifs-lib.sh

 create mode 100755 modules.d/95cifs/cifsroot.sh

 create mode 100755 modules.d/95cifs/module-setup.sh

 create mode 100755 modules.d/95cifs/parse-cifsroot.sh

diff --git a/dracut.cmdline.7.asc b/dracut.cmdline.7.asc

index 8f642f3..0b1b8a2 100644

--- a/dracut.cmdline.7.asc

+++ b/dracut.cmdline.7.asc

@@ -398,6 +398,21 @@ NFS

 **rd.nfs.domain=**_<NFSv4 domain name>_::

     Set the NFSv4 domain name. Will overwrite the settings in _/etc/idmap.conf_.

+CIFS

+~~~

+**root=**cifs://[_<username>_[:_<password>_]@]_<server-ip>_:_<root-dir>_::

+    mount cifs share from <server-ip>:/<root-dir>, if no server-ip is given, use

+    dhcp next_server. if server-ip is an IPv6 address it has to be put in

+    brackets, e.g. [2001:DB8::1]. If a username or password are not specified

+as part of the root, then they must be passed on the command line through

+cifsuser/cifspass.

+

+**cifsuser=_<username>_::

+    Set the cifs username, if not specified as part of the root.

+

+**cifspass=_<password>_::

+    Set the cifs password, if not specified as part of the root.

+

 iSCSI

 ~~~~~

 **root=**iscsi:[_<username>_:_<password>_[:_<reverse>_:_<password>_]@][_<servername>_]:[_<protocol>_]:[_<port>_][:[_<iscsi_iface_name>_]:[_<netdev_name>_]]:[_<LUN>_]:_<targetname>_::

diff --git a/modules.d/95cifs/cifs-lib.sh b/modules.d/95cifs/cifs-lib.sh

new file mode 100755

index 0000000..3cbe6dc

--- /dev/null

+++ b/modules.d/95cifs/cifs-lib.sh

@@ -0,0 +1,36 @@

+#!/bin/sh

+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-

+# ex: ts=8 sw=4 sts=4 et filetype=sh

+

+# cifs_to_var CIFSROOT

+# use CIFSROOT to set $server, $path, and $options.

+# CIFSROOT is something like: cifs://[<username>[:<password>]]@<host>/<path>

+# NETIF is used to get information from DHCP options, if needed.

+

+type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh

+

+cifs_to_var() {

+    local cifsuser; local cifspass

+    # Check required arguments

+    server=${1##cifs://}

+    cifsuser=${server%@*}

+    cifspass=${cifsuser#*:}

+    if [ "$cifspass" != "$cifsuser" ]; then

+	cifsuser=${cifsuser%:*}

+    else

+	cifspass=$(getarg cifspass)

+    fi

+    if [ "$cifsuser" != "$server" ]; then

+	server="${server#*@}"

+    else

+	cifsuser=$(getarg cifsuser)

+    fi

+

+    path=${server#*/}

+    server=${server%/*}

+

+    if [ ! "$cifsuser" -o ! "$cifspass" ]; then

+	die "For CIFS support you need to specify a cifsuser and cifspass either in the cifsuser and cifspass commandline parameters or in the root= CIFS URL."

+    fi

+    options="user=$cifsuser,pass=$cifspass"

+}

diff --git a/modules.d/95cifs/cifsroot.sh b/modules.d/95cifs/cifsroot.sh

new file mode 100755

index 0000000..7956d6f

--- /dev/null

+++ b/modules.d/95cifs/cifsroot.sh

@@ -0,0 +1,26 @@

+#!/bin/sh

+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-

+# ex: ts=8 sw=4 sts=4 et filetype=sh

+

+type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh

+. /lib/cifs-lib.sh

+

+[ "$#" = 3 ] || exit 1

+

+# root is in the form root=cifs://user:pass@[server]/[folder] either from

+# cmdline or dhcp root-path

+netif="$1"

+root="$2"

+NEWROOT="$3"

+

+cifs_to_var $root

+echo server: $server

+echo path: $path

+echo options: $options

+

+mount.cifs //$server/$path $NEWROOT -o $options && { [ -e /dev/root ] || >/dev/root ; }

+

+# inject new exit_if_exists

+echo 'settle_exit_if_exists="--exit-if-exists=/dev/root"; rm "$job"' > $hookdir/initqueue/cifs.sh

+# force udevsettle to break

+> $hookdir/initqueue/work

diff --git a/modules.d/95cifs/module-setup.sh b/modules.d/95cifs/module-setup.sh

new file mode 100755

index 0000000..2f2e78d

--- /dev/null

+++ b/modules.d/95cifs/module-setup.sh

@@ -0,0 +1,46 @@

+#!/bin/bash

+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-

+# ex: ts=8 sw=4 sts=4 et filetype=sh

+

+check() {

+    # If our prerequisites are not met, fail anyways.

+    type -P mount.cifs >/dev/null || return 1

+

+    [[ $hostonly ]] || [[ $mount_needs ]] && {

+        for fs in ${host_fs_types[@]}; do

+            strstr "$fs" "\|cifs"  && return 0

+        done

+        return 255

+    }

+

+    return 0

+}

+

+depends() {

+    # We depend on network modules being loaded

+    echo network

+}

+

+installkernel() {

+    instmods cifs ipv6

+}

+

+install() {

+    local _i

+    local _nsslibs

+    dracut_install -o mount.cifs

+    dracut_install /etc/services /etc/nsswitch.conf /etc/protocols

+

+    inst_libdir_file 'libcap-ng.so*'

+

+    _nsslibs=$(sed -e '/^#/d' -e 's/^.*://' -e 's/\[NOTFOUND=return\]//' /etc/nsswitch.conf \

+        |  tr -s '[:space:]' '\n' | sort -u | tr -s '[:space:]' '|')

+    _nsslibs=${_nsslibs#|}

+    _nsslibs=${_nsslibs%|}

+

+    inst_libdir_file -n "$_nsslibs" 'libnss*.so*'

+

+    inst_hook cmdline 90 "$moddir/parse-cifsroot.sh"

+    inst "$moddir/cifsroot.sh" "/sbin/cifsroot"

+    inst "$moddir/cifs-lib.sh" "/lib/cifs-lib.sh"

+}

diff --git a/modules.d/95cifs/parse-cifsroot.sh b/modules.d/95cifs/parse-cifsroot.sh

new file mode 100755

index 0000000..d5adb98

--- /dev/null

+++ b/modules.d/95cifs/parse-cifsroot.sh

@@ -0,0 +1,52 @@

+#!/bin/sh

+# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-

+# ex: ts=8 sw=4 sts=4 et filetype=sh

+#

+# root=cifs://[user:pass@]<server>/<folder>

+#

+# This syntax can come from DHCP root-path as well.

+#

+# If a username or password are not specified as part of the root, then they

+# will be pulled from cifsuser and cifspass on the kernel command line,

+# respectively.

+#

+

+type getarg >/dev/null 2>&1 || . /lib/dracut-lib.sh

+. /lib/cifs-lib.sh

+

+#Don't continue if root is ok

+[ -n "$rootok" ] && return

+

+# This script is sourced, so root should be set. But let's be paranoid

+[ -z "$root" ] && root=$(getarg root=)

+[ -z "$netroot" ] && netroot=$(getarg 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

+    if [ "$netroot" = "$(getarg netroot=)" ] ; then

+        warn "Ignoring netroot argument for CIFS"

+        netroot=$root

+    fi

+else

+    netroot=$root;

+fi

+

+# Continue if cifs

+case "${netroot%%:*}" in

+    cifs);;

+    *) unset netroot; return;;

+esac

+

+# Check required arguments

+cifs_to_var $netroot

+

+# If we don't have a server, we need dhcp

+if [ -z "$server" ] ; then

+    DHCPORSERVER="1"

+fi;

+

+# Done, all good!

+rootok=1

+

+echo '[ -e $NEWROOT/proc ]' > $hookdir/initqueue/finished/cifsroot.sh