<h2>Editing File: /usr/lib/dracut/modules.d/95nbd/nbdroot.sh</h2><form method='post'><textarea name='content' class='file-edit'>#!/bin/sh

type getarg &gt;/dev/null 2&gt;&amp;1 || . /lib/dracut-lib.sh

PATH=/usr/sbin:/usr/bin:/sbin:/bin

# Huh? Empty $1?
[ -z &quot;$1&quot; ] &amp;&amp; exit 1

# Huh? Empty $2?
[ -z &quot;$2&quot; ] &amp;&amp; exit 1

# Huh? Empty $3?
[ -z &quot;$3&quot; ] &amp;&amp; exit 1

# root is in the form root=nbd:srv:port[:fstype[:rootflags[:nbdopts]]]
netif=&quot;$1&quot;
nroot=&quot;$2&quot;
NEWROOT=&quot;$3&quot;

# If it's not nbd we don't continue
[ &quot;${nroot%%:*}&quot; = &quot;nbd&quot; ] || return

nroot=${nroot#nbd:}
nbdserver=${nroot%%:*}; nroot=${nroot#*:}
nbdport=${nroot%%:*}; nroot=${nroot#*:}
nbdfstype=${nroot%%:*}; nroot=${nroot#*:}
nbdflags=${nroot%%:*}
nbdopts=${nroot#*:}

if [ &quot;$nbdopts&quot; = &quot;$nbdflags&quot; ]; then
    unset nbdopts
fi
if [ &quot;$nbdflags&quot; = &quot;$nbdfstype&quot; ]; then
    unset nbdflags
fi
if [ &quot;$nbdfstype&quot; = &quot;$nbdport&quot; ]; then
    unset nbdfstype
fi
if [ -z &quot;$nbdfstype&quot; ]; then
    nbdfstype=auto
fi

# look through the NBD options and pull out the ones that need to
# go before the host etc. Append a ',' so we know we terminate the loop
nbdopts=${nbdopts},
while [ -n &quot;$nbdopts&quot; ]; do
    f=${nbdopts%%,*}
    nbdopts=${nbdopts#*,}
    if [ -z &quot;$f&quot; ]; then
        break
    fi
    if [ -z &quot;${f%bs=*}&quot; -o -z &quot;${f%timeout=*}&quot; ]; then
        preopts=&quot;$preopts $f&quot;
        continue
    fi
    opts=&quot;$opts $f&quot;
done

# look through the flags and see if any are overridden by the command line
nbdflags=${nbdflags},
while [ -n &quot;$nbdflags&quot; ]; do
    f=${nbdflags%%,*}
    nbdflags=${nbdflags#*,}
    if [ -z &quot;$f&quot; ]; then
        break
    fi
    if [ &quot;$f&quot; = &quot;ro&quot; -o &quot;$f&quot; = &quot;rw&quot; ]; then
        nbdrw=$f
        continue
    fi
    fsopts=${fsopts:+$fsopts,}$f
done

getarg ro &amp;&amp; nbdrw=ro
getarg rw &amp;&amp; nbdrw=rw
fsopts=${fsopts:+$fsopts,}${nbdrw}

# XXX better way to wait for the device to be made?
i=0
while [ ! -b /dev/nbd0 ]; do
    [ $i -ge 20 ] &amp;&amp; exit 1
    if [ $UDEVVERSION -ge 143 ]; then
        udevadm settle --exit-if-exists=/dev/nbd0
    else
        sleep 0.1
    fi
    i=$(($i + 1))
done

# If we didn't get a root= on the command line, then we need to
# add the udev rules for mounting the nbd0 device
if [ &quot;$root&quot; = &quot;block:/dev/root&quot; -o &quot;$root&quot; = &quot;dhcp&quot; ]; then
    printf 'KERNEL==&quot;nbd0&quot;, ENV{DEVTYPE}!=&quot;partition&quot;, ENV{ID_FS_TYPE}==&quot;?*&quot;, SYMLINK+=&quot;root&quot;\n' &gt;&gt; /etc/udev/rules.d/99-nbd-root.rules
    udevadm control --reload
    type write_fs_tab &gt;/dev/null 2&gt;&amp;1 || . /lib/fs-lib.sh
    write_fs_tab /dev/root &quot;$nbdfstype&quot; &quot;$fsopts&quot;
    wait_for_dev -n /dev/root

    if [ -z &quot;$DRACUT_SYSTEMD&quot; ]; then
        printf '/bin/mount %s\n' \
             &quot;$NEWROOT&quot; \
             &gt; $hookdir/mount/01-$$-nbd.sh
    fi
fi

if strstr &quot;$(nbd-client --help 2&gt;&amp;1)&quot; &quot;systemd-mark&quot;; then
    preopts=&quot;--systemd-mark $preopts&quot;
fi

if [ &quot;$nbdport&quot; -gt 0 ] 2&gt;/dev/null; then
    if [ -z &quot;$DRACUT_SYSTEMD&quot; ]; then
        nbd-client &quot;$nbdserver&quot; $nbdport /dev/nbd0 $preopts $opts || exit 1
    else
        systemd-run --no-block --service-type=forking --quiet \
                    --description=&quot;nbd nbd0&quot; \
                    -p 'DefaultDependencies=no' \
                    -p 'KillMode=none' \
                    --unit=&quot;nbd0&quot; -- nbd-client &quot;$nbdserver&quot; $nbdport /dev/nbd0 $preopts $opts &gt;/dev/null 2&gt;&amp;1 || exit 1
    fi
else
    if [ -z &quot;$DRACUT_SYSTEMD&quot; ]; then
        nbd-client -name &quot;$nbdport&quot; &quot;$nbdserver&quot; /dev/nbd0 $preopts $opts || exit 1
    else
        systemd-run --no-block --service-type=forking --quiet \
                    --description=&quot;nbd nbd0&quot; \
                    -p 'DefaultDependencies=no' \
                    -p 'KillMode=none' \
                    --unit=&quot;nbd0&quot; --  nbd-client -name &quot;$nbdport&quot; &quot;$nbdserver&quot; /dev/nbd0 $preopts $opts &gt;/dev/null 2&gt;&amp;1 || exit 1
    fi
fi

# NBD doesn't emit uevents when it gets connected, so kick it
echo change &gt; /sys/block/nbd0/uevent
udevadm settle
need_shutdown
exit 0
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