Contents of /tags/udev-185-r1/udev.rc
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Revision 1814 -
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Tue Jun 26 17:12:14 2012 UTC (11 years, 10 months ago) by niro
File size: 5291 byte(s)
Tue Jun 26 17:12:14 2012 UTC (11 years, 10 months ago) by niro
File size: 5291 byte(s)
tagged 'udev-185-r1'
| 1 | #!/bin/bash |
| 2 | # $Id$ |
| 3 | |
| 4 | udev_version() |
| 5 | { |
| 6 | local version=0 |
| 7 | |
| 8 | if [[ -x /sbin/udev ]] |
| 9 | then |
| 10 | version=$(/sbin/udev -V) |
| 11 | elif [[ -x /sbin/udevd ]] |
| 12 | then |
| 13 | version=$(/sbin/udevd --version) |
| 14 | elif [[ -x /lib/udev/udevd ]] |
| 15 | then |
| 16 | version=$(/lib/udev/udevd --version) |
| 17 | elif [[ -x /usr/lib/systemd/systemd-udevd ]] |
| 18 | then |
| 19 | version=$(/usr/lib/systemd/systemd-udev --version) |
| 20 | fi |
| 21 | |
| 22 | # We need it without a leading '0', else bash do the wrong thing |
| 23 | version=${version##0} |
| 24 | # Older udev's will print nothing |
| 25 | [[ -z ${version} ]] && version=0 |
| 26 | |
| 27 | echo "${version}" |
| 28 | } |
| 29 | |
| 30 | populate_udev() |
| 31 | { |
| 32 | local opts |
| 33 | |
| 34 | # tell modprobe.sh to be verbose to $CONSOLE |
| 35 | echo CONSOLE=${CONSOLE} > /dev/.udev_populate |
| 36 | |
| 37 | # populate /dev with devices already found by the kernel |
| 38 | rc_print " Populating /dev with existing devices through uevents ..." |
| 39 | if [[ ${RC_COLDPLUG} = yes ]] |
| 40 | then |
| 41 | udevadm trigger |
| 42 | else |
| 43 | # do not run any init-scripts |
| 44 | udevadm control --env do_not_run_plug_service=1 |
| 45 | |
| 46 | # only create device nodes |
| 47 | udevadm trigger --attr-match=dev |
| 48 | |
| 49 | # run persistent-net stuff |
| 50 | udevadm trigger --subsystem-match=net |
| 51 | fi |
| 52 | evaluate_retval |
| 53 | |
| 54 | # loop until everything is finished |
| 55 | rc_print " Letting udev process events ..." |
| 56 | udevadm settle --timeout=60 |
| 57 | evaluate_retval |
| 58 | |
| 59 | # unset this variable |
| 60 | udevadm control --env do_not_run_plug_service= |
| 61 | |
| 62 | rm -f /dev/.udev_populate |
| 63 | return 0 |
| 64 | } |
| 65 | |
| 66 | seed_dev() |
| 67 | { |
| 68 | # seed /dev with some things that we know we need |
| 69 | rc_print " Seeding /dev with needed nodes ..." |
| 70 | ( |
| 71 | [ ! -c /dev/console ] && mknod /dev/console c 5 1 |
| 72 | [ ! -c /dev/tty1 ] && mknod /dev/tty1 c 4 1 |
| 73 | [ ! -c /dev/null ] && mknod /dev/null c 1 3 |
| 74 | |
| 75 | # create kmsg too, so udev can add its start-message to dmesg |
| 76 | [ -c /dev/kmsg ] || mknod -m 660 /dev/kmsg c 1 11 |
| 77 | |
| 78 | # copy over any persistant things |
| 79 | if [[ -d /lib/udev/devices ]] |
| 80 | then |
| 81 | cp -RPp /lib/udev/devices/* /dev 2>/dev/null |
| 82 | fi |
| 83 | |
| 84 | # not provided by sysfs but needed |
| 85 | ln -snf /proc/self/fd /dev/fd |
| 86 | ln -snf fd/0 /dev/stdin |
| 87 | ln -snf fd/1 /dev/stdout |
| 88 | ln -snf fd/2 /dev/stderr |
| 89 | [[ -e /proc/kcore ]] && ln -snf /proc/kcore /dev/core |
| 90 | |
| 91 | # create problematic directories |
| 92 | mkdir -p /dev/pts /dev/shm |
| 93 | ) |
| 94 | evaluate_retval |
| 95 | } |
| 96 | |
| 97 | # main function |
| 98 | start_devicemanager() |
| 99 | { |
| 100 | local udev_prefix="" |
| 101 | local udev_daemon="" |
| 102 | |
| 103 | # get the right daemon and prefix for newer udev/systemd-udev installations |
| 104 | if [ -x /sbin/udevd ] |
| 105 | then |
| 106 | udev_daemon="/sbin/udevd" |
| 107 | udev_prefix="" |
| 108 | elif [ -x /lib/udev/udevd ] |
| 109 | then |
| 110 | udev_daemon="/lib/udev/udevd" |
| 111 | udev_prefix="" |
| 112 | elif [ -x /usr/lib/systemd/systemd-udevd ] |
| 113 | then |
| 114 | udev_daemon="/usr/lib/systemd/systemd-udevd" |
| 115 | udev_prefix="/usr" |
| 116 | fi |
| 117 | |
| 118 | # check if /dev/console exists outside tmpfs |
| 119 | [ -c /dev/console ] ; need_redirect=$? |
| 120 | |
| 121 | # create a ramdisk for populating udev |
| 122 | if [[ -z $(grep '[[:space:]]/dev[[:space:]]' /proc/mounts | cut -d ' ' -f2) ]] |
| 123 | then |
| 124 | rc_print "Mounting udev at /dev ..." |
| 125 | # many video drivers needed exec access |
| 126 | fstype=ramfs |
| 127 | # tmpfs was suggested by Greg Kroah-Hartman |
| 128 | kernel_supports_fs tmpfs && fstype=tmpfs |
| 129 | # mount devtmpfs if supported |
| 130 | kernel_supports_fs devtmpfs && fstype=devtmpfs |
| 131 | mount -n -t ${fstype} dev /dev -o exec,nosuid,mode=0755,size=10M |
| 132 | evaluate_retval |
| 133 | fi |
| 134 | |
| 135 | # if a device tarball exists load it but only if it is activated in the config |
| 136 | rc_print "Configurating system to use udev ..." |
| 137 | if [[ ${RC_DEVICE_TARBALL} = yes ]] |
| 138 | then |
| 139 | if [[ -f ${udev_prefix}/lib/udev/state/devices.tar.bz2 ]] |
| 140 | then |
| 141 | rc_print " Populating /dev with saved device nodes ..." |
| 142 | tar -jxpf ${udev_prefix}/lib/udev/state/devices.tar.bz2 -C /dev |
| 143 | evaluate_retval |
| 144 | fi |
| 145 | fi |
| 146 | |
| 147 | # other needed device nodes with udev |
| 148 | seed_dev |
| 149 | |
| 150 | if [ -e /proc/sys/kernel/hotplug ] |
| 151 | then |
| 152 | rc_print " Using netlink for hotplug events ..." |
| 153 | echo "" > /proc/sys/kernel/hotplug |
| 154 | evaluate_retval |
| 155 | else |
| 156 | rc_print ${COLYELLOW}" Kernel was not compiled with hotplug support !" |
| 157 | print_status failure |
| 158 | fi |
| 159 | |
| 160 | # load unix domain sockets if built as module |
| 161 | if [ -e /proc/modules ] |
| 162 | then |
| 163 | modprobe -q unix 2>/dev/null |
| 164 | fi |
| 165 | |
| 166 | rc_print " Starting udevd daemon ..." |
| 167 | if [ ${need_redirect} -eq 1 ] |
| 168 | then |
| 169 | # we need to open fds 0 1 2 |
| 170 | start-stop-daemon --start --exec "${udev_daemon}" -- --daemon </dev/console >/dev/console 2>/dev/console |
| 171 | else |
| 172 | start-stop-daemon --start --exec "${udev_daemon}" -- --daemon |
| 173 | fi |
| 174 | evaluate_retval |
| 175 | |
| 176 | # write root_link rule |
| 177 | if [ -x ${udev_prefix}/lib/udev/write_root_link_rule ] |
| 178 | then |
| 179 | ${udev_prefix}/lib/udev/write_root_link_rule |
| 180 | fi |
| 181 | |
| 182 | # populate udev device nodes |
| 183 | populate_udev |
| 184 | |
| 185 | # create nodes that udev can't |
| 186 | rc_print " Finializing udev configuration ..." |
| 187 | [[ -x /sbin/dmsetup ]] && /sbin/dmsetup mknodes &>/dev/null |
| 188 | [[ -x /sbin/lvm ]] && /sbin/lvm vgscan -P --mknodes --ignorelockingfailure &>/dev/null |
| 189 | [[ -x /sbin/evms_activate ]] && /sbin/evms_activate -q &>/dev/null |
| 190 | print_status success |
| 191 | |
| 192 | # same thing as /dev/.devfsd |
| 193 | touch /dev/.udev |
| 194 | } |
| 195 | |
| 196 | stop_devicemanager() |
| 197 | { |
| 198 | local udev_daemon="" |
| 199 | |
| 200 | # get the right daemon and prefix for newer udev/systemd-udev installations |
| 201 | if [ -x /sbin/udevd ] |
| 202 | then |
| 203 | udev_daemon="/sbin/udevd" |
| 204 | elif [ -x /lib/udev/udevd ] |
| 205 | then |
| 206 | udev_daemon="/lib/udev/udevd" |
| 207 | elif [ -x /usr/lib/systemd/systemd-udevd ] |
| 208 | then |
| 209 | udev_daemon="/usr/lib/systemd/systemd-udevd" |
| 210 | fi |
| 211 | |
| 212 | rc_print "Stopping udevd daemon ..." |
| 213 | start-stop-daemon --stop --exec "${udev_daemon}" |
| 214 | evaluate_retval |
| 215 | } |