archive/etc/rc.d/rc.startup

   1 #! /bin/sh -
   2 #
   3 # Boot-time system initialization script
   4 #
   5 # Copyright (c) 2017-2021 Matias Fonzo, <selk@dragora.org>.
   6 #
   7 # Licensed under the Apache License, Version 2.0 (the "License");
   8 # you may not use this file except in compliance with the License.
   9 # You may obtain a copy of the License at
  10 #
  11 #    http://www.apache.org/licenses/LICENSE-2.0
  12 #
  13 # Unless required by applicable law or agreed to in writing, software
  14 # distributed under the License is distributed on an "AS IS" BASIS,
  15 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16 # See the License for the specific language governing permissions and
  17 # limitations under the License.
  18
  19 RC="[${0##*/}]" # To reflect the name of the script between [].
  20 umask 022
  21 IFS='
  22         '
  23 PATH=/usr/local/sbin:/usr/local/bin:/sbin:/usr/sbin:/bin:/usr/bin
  24 LC_ALL=C
  25
  26 ### Mount virtual file systems
  27
  28 echo "${RC}: Mounting kernel based file systems"
  29 mount -v -n -o nosuid,noexec,nodev -t proc proc /proc
  30 mount -v -n -o nosuid,noexec,nodev -t sysfs sysfs /sys
  31 if ! mountpoint -q /dev
  32 then
  33     mount -v -n -t devtmpfs devtmpfs /dev
  34 fi
  35 mkdir -p /dev/pts /dev/shm /run
  36 mount -v -n -o mode=0620,gid=5 -t devpts devpts /dev/pts
  37 mount -v -n -o defaults -t tmpfs none /dev/shm
  38 mount -v -n -o defaults -t tmpfs tmpfs /run
  39 mkdir -p /run/lock
  40 chmod 1777 /run/lock /dev/shm
  41
  42 ### ^ End Of 'Mount virtual file systems'
  43
  44 ### Start the dynamic device management
  45
  46 # Udev handles the uevents itself, so we don't need to have
  47 # the kernel call out to any binary in response to them
  48 : > /sys/kernel/uevent_helper
  49 : > /proc/sys/kernel/hotplug
  50
  51 echo "${RC}: Starting event managing daemon: udevd --daemon"
  52 udevd --daemon
  53
  54 # Request device uevents to replay events at system coldplug
  55 udevadm trigger --type=subsystems --action=add
  56 udevadm trigger --type=devices    --action=add
  57 udevadm trigger --type=devices    --action=change
  58
  59 echo "${RC}: Waiting for pending udev events: udevadm settle --timeout=80"
  60 udevadm settle --timeout=80
  61
  62 ### ^ End Of 'Start the dynamic device management'
  63
  64 # Re-mount the root filesystem in *read-only mode*, if needed
  65 if test -w /
  66 then
  67     echo "${RC}: Remounting root filesystem in read-only mode"
  68     mount -v -n -o remount,ro /
  69 fi
  70
  71 ### Mount control groups
  72
  73 if grep -q cgroup /proc/filesystems
  74 then
  75     if test -d /sys/fs/cgroup
  76     then
  77         echo "${RC}: Mounting Cgroup controllers (version 1)"
  78
  79         # Cgroup controllers v1 must be mounted against a tmpfs(5)
  80         mount -v -n -t tmpfs cgroup_root /sys/fs/cgroup
  81
  82         # Comount all v1 controllers against the same hierarchy
  83         mount -v -n -t cgroup cgroup /sys/fs/cgroup
  84     fi
  85 fi
  86
  87 ### ^ End Of 'Mount control groups'
  88
  89 ### Initialization of the Logical Volume Manager (version 2)
  90
  91 if lvm version
  92 then
  93     echo "${RC}: LVM2: Scanning for new volume groups"
  94     modprobe dm-mod
  95     vgscan --mknodes --ignorelockingfailure 2> /dev/null && \
  96     vgchange --ignorelockingfailure -a y
  97 fi
  98
  99 ### ^ End Of 'Initialization of the Logical Volume Manager (version 2)'
 100
 101 # Activate swap partition if any available
 102 swapon -a
 103
 104 ### Set system clock (1/2)
 105
 106 # Avoid unnecessary fsck runs at boot time, especially for
 107 # already existing (multiple) systems not designed for UTC
 108 hwclock --hctosys --localtime
 109
 110 ### Perform file system checks
 111
 112 echo "${RC}: Performing file system checks"
 113 if test ! -f /fastboot
 114 then
 115     # Limit number of filesystem checkers using the max. number of processors
 116     FSCK_MAX_INST=$(nproc 2> /dev/null) || FSCK_MAX_INST=1
 117
 118     # Force checks if the regular file '/forcefsck' exists
 119     test -f /forcefsck && forcefsck_flag=-f
 120
 121     echo "*** Checking root file system"
 122     fsck $forcefsck_flag -a -C
 123     status=$?
 124
 125     if test $status -gt 1
 126     then
 127         if test $status -eq 32
 128         then
 129             echo "fsck(8) canceled by user request." 1>&2
 130         else
 131             if test $status -ge 4
 132             then
 133                 printf '%s' 1>&2 \
 134 "^ Return status = $status
 135 "'A maintenance shell will be started ...
 136
 137 If you do not know how to correct the file system errors,
 138 please see the filesystem-specific checker manual pages for
 139 further details.
 140 '
 141                 unset -v FSCK_MAX_INST forcefsck_flag status
 142                 sulogin || {
 143                     echo "Executing \`/bin/sh' as emergency shell ..." 1>&2
 144                     /bin/sh -
 145                 }
 146             fi
 147             echo "The system will be restarted now."
 148             umount -v -n -a -r
 149             mount -v -n -o remount,ro /
 150             reboot -n -f;
 151             exit 99
 152         fi
 153     fi
 154     unset -v status
 155
 156     echo "*** Checking local file system(s)"
 157     fsck $forcefsck_flag -A -C -R -T -a
 158
 159     unset -v FSCK_MAX_INST forcefsck_flag
 160 else
 161     echo "WARNING: /fastboot is present: Ignoring checks" 1>&2
 162 fi
 163
 164 ### ^ End Of 'Perform file system checks'
 165
 166 ### Parse config file
 167
 168 # The given values on /proc/cmdline have priority
 169 # over those present at "/etc/rc.conf"
 170 if grep -q -m 1 RC_ /proc/cmdline
 171 then
 172     tr -s '[:space:]' '[\n*]' < /proc/cmdline | \
 173      while IFS='=' read -r variable value
 174      do
 175          case $variable in
 176          RC_?*)
 177              # Set variable value avoiding possible code execution
 178              eval "$variable=\${value}"
 179              ;;
 180          esac
 181      done
 182 fi
 183 if test -f /etc/rc.conf
 184 then
 185     while IFS='=' read -r variable value
 186     do
 187         case $variable in
 188         RC_?*)
 189             if test -z "$variable"
 190             then
 191                 eval "$variable=\${value}"
 192             fi
 193             ;;
 194         esac
 195     done < /etc/rc.conf
 196 fi
 197
 198 # Use default values if the following variables are not defined
 199
 200 RC_HWCLOCK="${RC_HWCLOCK:-utc}"
 201 RC_HOSTNAME="${RC_HOSTNAME:-dragora}"
 202 RC_ESPEAKUP="${RC_ESPEAKUP:-0}"
 203 RC_EVOICE="${RC_EVOICE:-default}"
 204 RC_KEYMAP="${RC_KEYMAP:-qwerty/us}"
 205 RC_BLANKTIME="${RC_BLANKTIME:-15}"
 206
 207 ### ^ End Of 'Parse config file'
 208
 209 ### Set system clock (2/2)
 210
 211 if test "$RC_HWCLOCK" = utc
 212 then
 213     echo "${RC}: Setting system time from the hardware clock to UTC"
 214     hwclock --hctosys --utc
 215 else
 216     echo "${RC}: The system time was already set to local time" 1>&2
 217 fi
 218 unset -v RC_HWCLOCK
 219
 220 ### ^ End Of 'Set system clock'
 221
 222 # Re-mount the root filesystem in *read-write mode*
 223
 224 echo "${RC}: Remounting root filesystem in read-write mode ..."
 225 if ! test -w /
 226 then
 227     mount -v -n -o remount,rw /
 228 else
 229     echo "    The root filesystem is already in read-write mode." 1>&2
 230 fi
 231
 232 # Mount local file systems only
 233
 234 echo "${RC}: Mounting of local file systems declared in /etc/fstab"
 235 mount -v -a -t no,proc,sysfs,devtmpfs,shm,devpts,usbfs,cifs,smbfs,nfs
 236
 237 # Activate swap partitions or swap files
 238
 239 echo "${RC}: Activating swap devices, if any ..."
 240 swapon -v -a
 241
 242 # Update kernel modules
 243
 244 if test -s "/lib/modules/$(uname -r)/modules.dep"
 245 then
 246     echo "${RC}: Refreshing kernel module list: depmod --quick"
 247     depmod --quick
 248 else
 249     echo "${RC}: Generating kernel module dependency list: depmod --all"
 250     depmod --all
 251 fi
 252
 253 # Re-create hierarchy for temporary files (if needed)
 254
 255 mkdir -p /tmp /tmp/.font-unix /tmp/.ICE-unix /tmp/.X11-unix
 256 chmod 1777 /tmp /tmp/.font-unix /tmp/.ICE-unix /tmp/.X11-unix
 257
 258 # Re-create file records for logins and logouts
 259 touch \
 260  /var/log/btmp /var/log/lastlog /var/log/faillog /var/log/wtmp /var/run/utmp
 261 chgrp utmp /var/log/lastlog /var/run/utmp
 262 chmod 664 /var/log/lastlog /var/run/utmp
 263 chmod 600 /var/log/btmp
 264
 265 # Seek and destroy temporary files
 266
 267 rm -f /etc/nologin /fastboot /forcefsck
 268
 269 # Set default system host name
 270
 271 echo "$RC_HOSTNAME" > /proc/sys/kernel/hostname
 272 unset -v RC_HOSTNAME
 273
 274 # Set kernel parameters at runtime
 275
 276 echo "${RC}: Setting kernel parameters: sysctl -q --system"
 277 sysctl -q --system
 278
 279 # Start the loopback device
 280
 281 echo "${RC}: Starting loopback device ..."
 282 if ip -Version
 283 then
 284     ip addr del 127.0.0.1/8 dev lo 2> /dev/null
 285     ip addr add 127.0.0.1/8 dev lo brd + scope host
 286     ip link set lo up
 287 elif ifconfig --version
 288 then
 289     ifconfig lo up
 290 fi
 291
 292 # Initialize the random number generator, see random(4)
 293
 294 echo "${RC}: Initializing random number generator"
 295 echo "    /etc/random-seed <-> /dev/urandom ..."
 296
 297 touch /etc/random-seed
 298 if test -s /etc/random-seed
 299 then
 300     cat /etc/random-seed > /dev/urandom
 301 fi
 302
 303 # Get the pool size from /proc or use a default value
 304 size="$(cat /proc/sys/kernel/random/poolsize)" || size=512
 305
 306 # Save seed file containing the whole entropy pool
 307 dd if=/dev/urandom of=/etc/random-seed count=1 bs=$size
 308 chmod 600 /etc/random-seed; unset -v size
 309
 310 ### Configure ISA Plug-and-Play devices (legacy)
 311
 312 if command -v isapnp > /dev/null && command -v pnpdump > /dev/null
 313 then
 314     if test -e /etc/isapnp.conf
 315     then
 316         echo "${RC}: Setting ISA PnP devices using /etc/isapnp.conf"
 317         isapnp /etc/isapnp.conf
 318     else
 319         echo "${RC}: Creating resource information for ISA PnP devices"
 320         pnpdump > /etc/isapnp.conf
 321
 322         echo "${RC}: Setting devices from the new /etc/isapnp.conf"
 323         isapnp /etc/isapnp.conf
 324     fi
 325 fi
 326
 327 ### ^ End Of 'Configure ISA Plug-and-Play devices (legacy)'
 328
 329 # Start sound or speech engine
 330
 331 if test -x /etc/rc.d/rc.alsa
 332 then
 333     /etc/rc.d/rc.alsa start
 334 fi
 335 if test "$RC_ESPEAKUP" != 0
 336 then
 337     echo "${RC}: Activating software synthesizer: espeakup -V $RC_EVOICE"
 338     modprobe speakup_soft
 339     espeakup -V "$RC_EVOICE"
 340 fi
 341 unset -v RC_ESPEAKUP RC_EVOICE
 342
 343 # Load keyboard map, set terminal attributes
 344
 345 echo "${RC}: Loading keyboard map: loadkeys $RC_KEYMAP"
 346 loadkeys "$RC_KEYMAP"
 347 unset -v RC_KEYMAP
 348
 349 echo "${RC}: Setting screen blanking interval: setterm -blank $RC_BLANKTIME"
 350 setterm -blank "$RC_BLANKTIME"
 351 unset -v RC_BLANKTIME
 352