/etc/rc.d/rc.sysinit

[[email protected] ~]# ls /etc/rc.d/rc.sysinit
/etc/rc.d/rc.sysinit
[[email protected] ~]#
[[email protected] ~]# ls /etc/rc.d/rc.sysinit
/etc/rc.d/rc.sysinit
[[email protected] ~]# cat /etc/rc.d/rc.sysinit
#!/bin/bash
#
# /etc/rc.d/rc.sysinit - run once at boot time
#
# Taken in part from Miquel van Smoorenburg‘s bcheckrc.
#

HOSTNAME=$(/bin/hostname)

set -m

if [ -f /etc/sysconfig/network ]; then
    . /etc/sysconfig/network
fi
if [ -z "$HOSTNAME" -o "$HOSTNAME" = "(none)" ]; then
    HOSTNAME=localhost
fi

if [ ! -e /proc/mounts ]; then
    mount -n -t proc /proc /proc
    mount -n -t sysfs /sys /sys >/dev/null 2>&1
fi
if [ ! -d /proc/bus/usb ]; then
    modprobe usbcore >/dev/null 2>&1 && mount -n -t usbfs /proc/bus/usb /proc/bus/usb
else
    mount -n -t usbfs /proc/bus/usb /proc/bus/usb
fi

#remount /dev/shm to set attributes from fstab #669700
mount -n -o remount /dev/shm >/dev/null 2>&1
#remount /proc to set attributes from fstab #984003
mount -n -o remount /proc >/dev/null 2>&1

. /etc/init.d/functions

PLYMOUTH=
[ -x /bin/plymouth ] && PLYMOUTH=yes

# Check SELinux status
SELINUX_STATE=
if [ -e "/selinux/enforce" ] && [ "$(cat /proc/self/attr/current)" != "kernel" ]; then
    if [ -r "/selinux/enforce" ] ; then
        SELINUX_STATE=$(cat "/selinux/enforce")
    else
        # assume enforcing if you can‘t read it
        SELINUX_STATE=1
    fi
fi

if [ -n "$SELINUX_STATE" -a -x /sbin/restorecon ] && __fgrep " /dev " /proc/mounts >/dev/null 2>&1 ; then
    /sbin/restorecon -R -F /dev 2>/dev/null
fi

disable_selinux() {
    echo $"*** Warning -- SELinux is active"
    echo $"*** Disabling security enforcement for system recovery."
    echo $"*** Run ‘setenforce 1‘ to reenable."
    echo "0" > "/selinux/enforce"
}

relabel_selinux() {
    # if /sbin/init is not labeled correctly this process is running in the
    # wrong context, so a reboot will be required after relabel
    AUTORELABEL=
    . /etc/selinux/config
    echo "0" > /selinux/enforce
    [ -n "$PLYMOUTH" ] && plymouth --hide-splash

    if [ "$AUTORELABEL" = "0" ]; then
    echo
    echo $"*** Warning -- SELinux ${SELINUXTYPE} policy relabel is required. "
    echo $"*** /etc/selinux/config indicates you want to manually fix labeling"
    echo $"*** problems. Dropping you to a shell; the system will reboot"
    echo $"*** when you leave the shell."
    start rcS-emergency

    else
    echo
    echo $"*** Warning -- SELinux ${SELINUXTYPE} policy relabel is required."
    echo $"*** Relabeling could take a very long time, depending on file"
    echo $"*** system size and speed of hard drives."

    /sbin/fixfiles -F restore > /dev/null 2>&1
    fi
    rm -f  /.autorelabel
    # at this point fsck was already executed see bz1236062
    [ -f /forcefsck ] && rm -f /forcefsck

    echo $"Unmounting file systems"
    umount -a
    mount -n -o remount,ro /
    echo $"Automatic reboot in progress."
    reboot -f
}

# Print a text banner.
echo -en $"\t\tWelcome to "
read -r system_release < /etc/system-release
if [[ "$system_release" == *"Red Hat"* ]]; then
 [ "$BOOTUP" = "color" ] && echo -en "\\033[0;31m"
 echo -en "Red Hat"
 [ "$BOOTUP" = "color" ] && echo -en "\\033[0;39m"
 PRODUCT=$(sed "s/Red Hat \(.*\) release.*/\1/" /etc/system-release)
 echo " $PRODUCT"
elif [[ "$system_release" == *Fedora* ]]; then
 [ "$BOOTUP" = "color" ] && echo -en "\\033[0;34m"
 echo -en "Fedora"
 [ "$BOOTUP" = "color" ] && echo -en "\\033[0;39m"
 PRODUCT=$(sed "s/Fedora \(.*\) \?release.*/\1/" /etc/system-release)
 echo " $PRODUCT"
elif [[ "$system_release" =~ "CentOS" ]]; then
 [ "$BOOTUP" = "color" ] && echo -en "\\033[0;36m"
 echo -en "CentOS"
 [ "$BOOTUP" = "color" ] && echo -en "\\033[0;39m"
 PRODUCT=$(sed "s/CentOS \(.*\) \?release.*/\1/" /etc/system-release)
 echo " $PRODUCT"
else
 PRODUCT=$(sed "s/ release.*//g" /etc/system-release)
 echo "$PRODUCT"
fi

# Only read this once.
cmdline=$(cat /proc/cmdline)

# Initialize hardware
if [ -f /proc/sys/kernel/modprobe ]; then
   if ! strstr "$cmdline" nomodules && [ -f /proc/modules ] ; then
       sysctl -w kernel.modprobe="/sbin/modprobe" >/dev/null 2>&1
   else
       # We used to set this to NULL, but that causes ‘failed to exec‘ messages"
       sysctl -w kernel.modprobe="/bin/true" >/dev/null 2>&1
   fi
fi

touch /dev/.in_sysinit >/dev/null 2>&1

# Set default affinity
if [ -x /bin/taskset ]; then
   if strstr "$cmdline" default_affinity= ; then
     for arg in $cmdline ; do
         if [ "${arg##default_affinity=}" != "${arg}" ]; then
             /bin/taskset -p ${arg##default_affinity=} 1
             /bin/taskset -p ${arg##default_affinity=} $$
         fi
     done
   fi
fi

nashpid=$(pidof nash 2>/dev/null)
[ -n "$nashpid" ] && kill $nashpid >/dev/null 2>&1
unset nashpid

apply_sysctl

/sbin/start_udev

# Load other user-defined modules
for file in /etc/sysconfig/modules/*.modules ; do
  [ -x $file ] && $file
done

# Load modules (for backward compatibility with VARs)
if [ -f /etc/rc.modules ]; then
    /etc/rc.modules
fi

mount -n /dev/pts >/dev/null 2>&1
[ -n "$SELINUX_STATE" ] && restorecon -F /dev/pts >/dev/null 2>&1

# Configure kernel parameters
update_boot_stage RCkernelparam
apply_sysctl

# Set the hostname.
update_boot_stage RChostname
action $"Setting hostname ${HOSTNAME}: " hostname ${HOSTNAME}
[ -n "${NISDOMAIN}" ] && domainname ${NISDOMAIN}

# Sync waiting for storage.
{ rmmod scsi_wait_scan ; modprobe scsi_wait_scan ; rmmod scsi_wait_scan ; } >/dev/null 2>&1

# Device mapper & related initialization
if ! __fgrep "device-mapper" /proc/devices >/dev/null 2>&1 ; then
       modprobe dm-mod >/dev/null 2>&1
fi

if [ -f /etc/crypttab ]; then
    init_crypto 0
fi

if ! strstr "$cmdline" nompath && [ -f /etc/multipath.conf -a         -x /sbin/multipath ]; then
    modprobe dm-multipath > /dev/null 2>&1
    /sbin/multipath -v 0
    if [ -x /sbin/kpartx ]; then
                action_silent $"Add partition mappings: " /sbin/dmsetup ls --target multipath --exec "/sbin/kpartx -a -p p"
    fi
fi

if ! strstr "$cmdline" nodmraid && [ -x /sbin/dmraid ]; then
    modprobe dm-mirror >/dev/null 2>&1
    dmraidsets=$(LC_ALL=C /sbin/dmraid -s -c -i)
    if [ "$?" = "0" ]; then
        for dmname in $dmraidsets; do
            if [[ "$dmname" == isw_* ]] &&                ! strstr "$cmdline" noiswmd; then
                continue
            fi
                        action_silent $"Activate software (ATA)RAID: " /sbin/dmraid -ay -i --rm_partitions -p "$dmname"
            /sbin/kpartx -a -p p "/dev/mapper/$dmname"
        done
    fi
fi

# Start any MD RAID arrays that haven‘t been started yet
[ -r /proc/mdstat -a -r /dev/md/md-device-map ] && action $"Run MD devices: " /sbin/mdadm -IRs

if [ -x /sbin/lvm ]; then
    if [ ! -f /.nolvm ] && ! strstr "$cmdline" nolvm ; then
        action $"Setting up Logical Volume Management:" /sbin/lvm vgchange -a ay --sysinit --ignoreskippedcluster
    else
        echo $"Logical Volume Management disabled at boot."
    fi
fi

if [ -f /etc/crypttab ]; then
    init_crypto 0
fi

if [ -f /fastboot ] || strstr "$cmdline" fastboot ; then
    fastboot=yes
fi

if [ -f /fsckoptions ]; then
    fsckoptions=$(cat /fsckoptions)
fi

if [ -f /forcefsck ] || strstr "$cmdline" forcefsck ; then
    fsckoptions="-f $fsckoptions"
elif [ -f /.autofsck ]; then
    [ -f /etc/sysconfig/autofsck ] && . /etc/sysconfig/autofsck
    if [ "$AUTOFSCK_DEF_CHECK" = "yes" ]; then
        AUTOFSCK_OPT="$AUTOFSCK_OPT -f"
    fi
    if [ -n "$AUTOFSCK_SINGLEUSER" ]; then
        [ -n "$PLYMOUTH" ] && plymouth --hide-splash
        echo
        echo $"*** Warning -- the system did not shut down cleanly. "
        echo $"*** Dropping you to a shell; the system will continue"
        echo $"*** when you leave the shell."
        [ -n "$SELINUX_STATE" ] && echo "0" > /selinux/enforce
        start rcS-emergency
        [ -n "$SELINUX_STATE" ] && echo "1" > /selinux/enforce
        [ -n "$PLYMOUTH" ] && plymouth --show-splash
    fi
    fsckoptions="$AUTOFSCK_OPT $fsckoptions"
fi

if [ "$BOOTUP" = "color" ]; then
    fsckoptions="-C $fsckoptions"
else
    fsckoptions="-V $fsckoptions"
fi

READONLY=
if [ -f /etc/sysconfig/readonly-root ]; then
    . /etc/sysconfig/readonly-root
fi
if strstr "$cmdline" readonlyroot ; then
    READONLY=yes
    [ -z "$RW_MOUNT" ] && RW_MOUNT=/var/lib/stateless/writable
    [ -z "$STATE_MOUNT" ] && STATE_MOUNT=/var/lib/stateless/state
fi
if strstr "$cmdline" noreadonlyroot ; then
    READONLY=no
fi

if [ "$READONLY" = "yes" -o "$TEMPORARY_STATE" = "yes" ]; then

    mount_empty() {
        if [ -e "$1" ]; then
            echo "$1" | cpio -p -vd "$RW_MOUNT" &>/dev/null
            mount -n --bind "$RW_MOUNT$1" "$1"
        fi
    }

    mount_dirs() {
        if [ -e "$1" ]; then
            mkdir -p "$RW_MOUNT$1"
            find "$1" -type d -print0 | cpio -p -0vd "$RW_MOUNT" &>/dev/null
            mount -n --bind "$RW_MOUNT$1" "$1"
        fi
    }

    mount_files() {
        if [ -e "$1" ]; then
            cp -a --parents "$1" "$RW_MOUNT"
            mount -n --bind "$RW_MOUNT$1" "$1"
        fi
    }

    # Common mount options for scratch space regardless of
    # type of backing store
    mountopts=

    # Scan partitions for local scratch storage
    rw_mount_dev=$(blkid -t LABEL="$RW_LABEL" -l -o device)

    # First try to mount scratch storage from /etc/fstab, then any
    # partition with the proper label.  If either succeeds, be sure
    # to wipe the scratch storage clean.  If both fail, then mount
    # scratch storage via tmpfs.
    if mount $mountopts "$RW_MOUNT" > /dev/null 2>&1 ; then
        rm -rf "$RW_MOUNT" > /dev/null 2>&1
    elif [ x$rw_mount_dev != x ] && mount $rw_mount_dev $mountopts "$RW_MOUNT" > /dev/null 2>&1; then
        rm -rf "$RW_MOUNT"  > /dev/null 2>&1
    else
        mount -n -t tmpfs $RW_OPTIONS $mountopts none "$RW_MOUNT"
    fi

    for file in /etc/rwtab /etc/rwtab.d/* /dev/.initramfs/rwtab ; do
        is_ignored_file "$file" && continue
    [ -f $file ] && cat $file | while read type path ; do
            case "$type" in
                empty)
                    mount_empty $path
                    ;;
                files)
                    mount_files $path
                    ;;
                dirs)
                    mount_dirs $path
                    ;;
                *)
                    ;;
            esac
            [ -n "$SELINUX_STATE" -a -e "$path" ] && restorecon -R "$path"
        done
    done

    # Use any state passed by initramfs
    [ -d /dev/.initramfs/state ] && cp -a /dev/.initramfs/state/* $RW_MOUNT

    # In theory there should be no more than one network interface active
    # this early in the boot process -- the one we‘re booting from.
    # Use the network address to set the hostname of the client.  This
    # must be done even if we have local storage.
    ipaddr=
    if [ "$HOSTNAME" = "localhost" -o "$HOSTNAME" = "localhost.localdomain" ]; then
        ipaddr=$(ip addr show to 0.0.0.0/0 scope global | awk ‘/[[:space:]]inet / { print gensub("/.*","","g",$2) }‘)
        for ip in $ipaddr ; do
            HOSTNAME=
            eval $(ipcalc -h $ip 2>/dev/null)
            [ -n "$HOSTNAME" ] && { hostname ${HOSTNAME} ; break; }
        done
    fi

    # Clients with read-only root filesystems may be provided with a
    # place where they can place minimal amounts of persistent
    # state.  SSH keys or puppet certificates for example.
    #
    # Ideally we‘ll use puppet to manage the state directory and to
    # create the bind mounts.  However, until that‘s all ready this
    # is sufficient to build a working system.

    # First try to mount persistent data from /etc/fstab, then any
    # partition with the proper label, then fallback to NFS
    state_mount_dev=$(blkid -t LABEL="$STATE_LABEL" -l -o device)
    if mount $mountopts $STATE_OPTIONS "$STATE_MOUNT" > /dev/null 2>&1 ; then
        /bin/true
    elif [ x$state_mount_dev != x ] && mount $state_mount_dev $mountopts "$STATE_MOUNT" > /dev/null 2>&1;  then
        /bin/true
    elif [ ! -z "$CLIENTSTATE" ]; then
        # No local storage was found.  Make a final attempt to find
        # state on an NFS server.

        mount -t nfs $CLIENTSTATE/$HOSTNAME $STATE_MOUNT -o rw,nolock
    fi

    if [ -w "$STATE_MOUNT" ]; then

        mount_state() {
            if [ -e "$1" ]; then
                [ ! -e "$STATE_MOUNT$1" ] && cp -a --parents "$1" "$STATE_MOUNT"
                mount -n --bind "$STATE_MOUNT$1" "$1"
            fi
        }

        for file in /etc/statetab /etc/statetab.d/* ; do
            is_ignored_file "$file" && continue
            [ ! -f "$file" ] && continue

            if [ -f "$STATE_MOUNT/$file" ] ; then
                mount -n --bind "$STATE_MOUNT/$file" "$file"
            fi

            for path in $(grep -v "^#" "$file" 2>/dev/null); do
                mount_state "$path"
                [ -n "$SELINUX_STATE" -a -e "$path" ] && restorecon -R "$path"
            done
        done

        if [ -f "$STATE_MOUNT/files" ] ; then
            for path in $(grep -v "^#" "$STATE_MOUNT/files" 2>/dev/null); do
                mount_state "$path"
                [ -n "$SELINUX_STATE" -a -e "$path" ] && restorecon -R "$path"
            done
        fi
    fi

        if mount | grep -q /var/lib/nfs/rpc_pipefs ; then
                mount -t rpc_pipefs sunrpc /var/lib/nfs/rpc_pipefs && service rpcidmapd restart
        fi
fi

if [[ " $fsckoptions" != *" -y"* ]]; then
    fsckoptions="-a $fsckoptions"
fi

_RUN_QUOTACHECK=0
if [ -f /forcequotacheck ] || strstr "$cmdline" forcequotacheck ; then
    _RUN_QUOTACHECK=1
fi
if [ -z "$fastboot" -a "$READONLY" != "yes" ]; then

        STRING=$"Checking filesystems"
    echo $STRING
    fsck -T -t noopts=_netdev -A $fsckoptions
    rc=$?

    if [ "$rc" -eq "0" ]; then
        success "$STRING"
        echo
    elif [ "$rc" -eq "1" ]; then
            passed "$STRING"
        echo
    elif [ "$rc" -eq "2" -o "$rc" -eq "3" ]; then
        echo $"Unmounting file systems"
        umount -a
        mount -n -o remount,ro /
        echo $"Automatic reboot in progress."
        reboot -f
        fi

        # A return of 4 or higher means there were serious problems.
    if [ $rc -gt 1 ]; then
        [ -n "$PLYMOUTH" ] && plymouth --hide-splash

        failure "$STRING"
        echo
        echo
        echo $"*** An error occurred during the file system check."
        echo $"*** Dropping you to a shell; the system will reboot"
        echo $"*** when you leave the shell."

                str=$"(Repair filesystem)"
        PS1="$str \# # "; export PS1
        [ "$SELINUX_STATE" = "1" ] && disable_selinux
        start rcS-emergency

        echo $"Unmounting file systems"
        umount -a
        mount -n -o remount,ro /
        echo $"Automatic reboot in progress."
        reboot -f
    elif [ "$rc" -eq "1" ]; then
        _RUN_QUOTACHECK=1
    fi
fi

remount_needed() {
  local state oldifs
  [ "$READONLY" = "yes" ] && return 1
  state=$(LC_ALL=C awk ‘/ \/ / && ($3 !~ /rootfs/) { print $4 }‘ /proc/mounts)
  oldifs=$IFS
  IFS=","
  for opt in $state ; do
    if [ "$opt" = "rw" ]; then
        IFS=$oldifs
        return 1
    fi
  done
  IFS=$oldifs
  return 0
}

# Remount the root filesystem read-write.
update_boot_stage RCmountfs
if remount_needed ; then
  action $"Remounting root filesystem in read-write mode: " mount -n -o remount,rw /
fi

# Clean up SELinux labels
if [ -n "$SELINUX_STATE" ]; then
   restorecon /etc/mtab /etc/ld.so.cache /etc/blkid/blkid.tab /etc/resolv.conf >/dev/null 2>&1
fi

# If relabeling, relabel mount points.
if [ -n "$SELINUX_STATE" -a "$READONLY" != "yes" ]; then
    if [ -f /.autorelabel ] || strstr "$cmdline" autorelabel ; then
    restorecon $(awk ‘!/^#/ && $4 !~ /noauto/ && $2 ~ /^\// { print $2 }‘ /etc/fstab) >/dev/null 2>&1
    fi
fi

if [ "$READONLY" != "yes" ] ; then
    # Clear mtab
    (> /etc/mtab) &> /dev/null

    # Remove stale backups
    rm -f /etc/mtab~ /etc/mtab~~

    # Enter mounted filesystems into /etc/mtab
    mount -f /
    mount -f /proc >/dev/null 2>&1
    mount -f /sys >/dev/null 2>&1
    mount -f /dev/pts >/dev/null 2>&1
    mount -f /dev/shm >/dev/null 2>&1
    mount -f /proc/bus/usb >/dev/null 2>&1
fi

# Mount all other filesystems (except for NFS and /proc, which is already
# mounted). Contrary to standard usage,
# filesystems are NOT unmounted in single user mode.
# The ‘no‘ applies to all listed filesystem types. See mount(8).
if [ "$READONLY" != "yes" ] ; then
    action $"Mounting local filesystems: " mount -a -t nonfs,nfs4,smbfs,ncpfs,cifs,gfs,gfs2,glusterfs -O no_netdev
else
    action $"Mounting local filesystems: " mount -a -n -t nonfs,nfs4,smbfs,ncpfs,cifs,gfs,gfs2,glusterfs -O no_netdev
fi

# Check to see if a full relabel is needed
if [ -n "$SELINUX_STATE" -a "$READONLY" != "yes" ]; then
    if [ -f /.autorelabel ] || strstr "$cmdline" autorelabel ; then
    relabel_selinux
    fi
else
    if [ -d /etc/selinux -a "$READONLY" != "yes" ]; then
        [ -f /.autorelabel ] || touch /.autorelabel
    fi
fi

# Update quotas if necessary
if [ X"$_RUN_QUOTACHECK" = X1 -a -x /sbin/quotacheck ]; then
    action $"Checking local filesystem quotas: " /sbin/quotacheck -anug
fi

if [ -x /sbin/quotaon ]; then
    action $"Enabling local filesystem quotas: " /sbin/quotaon -aug
fi

# Initialize pseudo-random number generator
if [ -f "/var/lib/random-seed" ]; then
    cat /var/lib/random-seed > /dev/urandom
else
    [ "$READONLY" != "yes" ] && touch /var/lib/random-seed
fi
if [ "$READONLY" != "yes" ]; then
    chmod 600 /var/lib/random-seed
    dd if=/dev/urandom of=/var/lib/random-seed count=1 bs=4096 2>/dev/null
fi

if [ -f /etc/crypttab ]; then
    init_crypto 1
fi

# Configure machine if necessary.
if [ -f /.unconfigured ]; then

    if [ -x /bin/plymouth ]; then
        /bin/plymouth quit
    fi

    if [ -x /usr/bin/system-config-keyboard ]; then
    /usr/bin/system-config-keyboard
    fi
    if [ -x /usr/bin/passwd ]; then
        /usr/bin/passwd root
    fi
    if [ -x /usr/sbin/system-config-network-tui ]; then
    /usr/sbin/system-config-network-tui
    fi
    if [ -x /usr/sbin/timeconfig ]; then
    /usr/sbin/timeconfig
    fi
    if [ -x /usr/sbin/authconfig-tui ]; then
    /usr/sbin/authconfig-tui --nostart
    fi
    if [ -x /usr/sbin/ntsysv ]; then
    /usr/sbin/ntsysv --level 35
    fi

    # Reread in network configuration data.
    if [ -f /etc/sysconfig/network ]; then
    . /etc/sysconfig/network

    # Reset the hostname.
    action $"Resetting hostname ${HOSTNAME}: " hostname ${HOSTNAME}
    fi

    rm -f /.unconfigured
fi

# Clean out /.
rm -f /fastboot /fsckoptions /forcefsck /.autofsck /forcequotacheck /halt     /poweroff /.suspended &> /dev/null

# Do we need (w|u)tmpx files? We don‘t set them up, but the sysadmin might...
_NEED_XFILES=
[ -f /var/run/utmpx -o -f /var/log/wtmpx ] && _NEED_XFILES=1

# Clean up /var.
rm -rf /var/lock/cvs/* /var/run/screen/*
find /var/lock /var/run ! -type d -exec rm -f {} \;
rm -f /var/lib/rpm/__db* &> /dev/null
rm -f /var/gdm/.gdmfifo &> /dev/null

[ "$PROMPT" != no ] && plymouth watch-keystroke --command "touch /var/run/confirm" --keys=Ii &

# Clean up utmp/wtmp
> /var/run/utmp
touch /var/log/wtmp
chgrp utmp /var/run/utmp /var/log/wtmp
chmod 0664 /var/run/utmp /var/log/wtmp
if [ -n "$_NEED_XFILES" ]; then
  > /var/run/utmpx
  touch /var/log/wtmpx
  chgrp utmp /var/run/utmpx /var/log/wtmpx
  chmod 0664 /var/run/utmpx /var/log/wtmpx
fi
[ -n "$SELINUX_STATE" ] && restorecon /var/run/utmp* /var/log/wtmp* >/dev/null 2>&1

# Clean up various /tmp bits
[ -n "$SELINUX_STATE" ] && restorecon /tmp
rm -f /tmp/.X*-lock /tmp/.lock.* /tmp/.gdm_socket /tmp/.s.PGSQL.*
rm -rf /tmp/.X*-unix /tmp/.ICE-unix /tmp/.font-unix /tmp/hsperfdata_*        /tmp/kde-* /tmp/ksocket-* /tmp/mc-* /tmp/mcop-* /tmp/orbit-*         /tmp/scrollkeeper-*  /tmp/ssh-*        /dev/.in_sysinit

# Make ICE directory
mkdir -m 1777 -p /tmp/.ICE-unix >/dev/null 2>&1
chown root:root /tmp/.ICE-unix
[ -n "$SELINUX_STATE" ] && restorecon /tmp/.ICE-unix >/dev/null 2>&1

# Start up swapping.
update_boot_stage RCswap
action $"Enabling /etc/fstab swaps: " swapon -a -e
if [ "$AUTOSWAP" = "yes" ]; then
    curswap=$(awk ‘/^\/dev/ { print $1 }‘ /proc/swaps | while read x; do get_numeric_dev dec $x ; echo -n " "; done)
    swappartitions=$(blkid -t TYPE=swap -o device)
    if [ x"$swappartitions" != x ]; then
        for partition in $swappartitions ; do
            [ ! -e $partition ] && continue
            majmin=$(get_numeric_dev dec $partition)
            echo $curswap | grep -qw "$majmin" || action $"Enabling local swap partitions: " swapon $partition
        done
    fi
fi

# Set up binfmt_misc
/bin/mount -t binfmt_misc none /proc/sys/fs/binfmt_misc > /dev/null 2>&1

# Boot time profiles. Yes, this should be somewhere else.
if [ -x /usr/sbin/system-config-network-cmd ]; then
  if strstr "$cmdline" netprofile= ; then
    for arg in $cmdline ; do
        if [ "${arg##netprofile=}" != "${arg}" ]; then
        /usr/sbin/system-config-network-cmd --profile ${arg##netprofile=}
        fi
    done
  fi
fi

# Now that we have all of our basic modules loaded and the kernel going,
# let‘s dump the syslog ring somewhere so we can find it later
[ -f /var/log/dmesg ] && mv -f /var/log/dmesg /var/log/dmesg.old
dmesg -s 131072 > /var/log/dmesg

# create the crash indicator flag to warn on crashes, offer fsck with timeout
touch /.autofsck &> /dev/null

[ "$PROMPT" != no ] && plymouth --ignore-keystroke=Ii
if strstr "$cmdline" confirm ; then
    touch /var/run/confirm
fi

# Let rhgb know that we‘re leaving rc.sysinit
if [ -x /bin/plymouth ]; then
    /bin/plymouth --sysinit
fi

[[email protected] ~]# 

原文地址：https://www.cnblogs.com/liweiming/p/9966981.html