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    Annotation of /tags/udev-185-r4/udev.rc

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    Revision 1869 - (hide annotations) (download)
    Mon Jul 30 18:11:06 2012 UTC (11 years, 9 months ago) by niro
    File size: 4740 byte(s) 
    tagged 'udev-185-r4'
    1 niro 1058 #!/bin/bash
    2 niro 1813 # $Id$
    3 niro 1058
    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 niro 1813 elif [[ -x /lib/udev/udevd ]]
    15     then
    16     version=$(/lib/udev/udevd --version)
    17     elif [[ -x /usr/lib/systemd/systemd-udevd ]]
    18     then
    19 niro 1868 version=$(/usr/lib/systemd/systemd-udevd --version)
    20 niro 1058 fi
    21    
    22 niro 1813 # 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 ${version} ]] && version=0
    26    
    27 niro 1058 echo "${version}"
    28     }
    29    
    30     populate_udev()
    31     {
    32     local opts
    33    
    34     # populate /dev with devices already found by the kernel
    35 niro 1289 rc_print " Populating /dev with existing devices through uevents ..."
    36 niro 1058 if [[ ${RC_COLDPLUG} = yes ]]
    37     then
    38 niro 1813 udevadm trigger
    39 niro 1058 else
    40     # do not run any init-scripts
    41 niro 1868 udevadm control --property=do_not_run_plug_service=1
    42 niro 1058
    43 niro 1868 udevadm trigger --type=subsystems --action=add
    44     udevadm trigger --type=devices --action=add
    45 niro 1058 fi
    46     evaluate_retval
    47    
    48     # unset this variable
    49 niro 1868 udevadm control --property=do_not_run_plug_service=
    50 niro 1058
    51     return 0
    52     }
    53    
    54     seed_dev()
    55     {
    56     # seed /dev with some things that we know we need
    57 niro 1289 rc_print " Seeding /dev with needed nodes ..."
    58 niro 1058 (
    59 niro 1868 [ ! -c /dev/console ] && mknod -m 600 /dev/console c 5 1
    60     [ ! -c /dev/tty1 ] && mknod -m 620 /dev/tty1 c 4 1
    61     [ ! -c /dev/tty ] && mknod -m 666 /dev/tty c 5 0
    62     [ ! -c /dev/null ] && mknod -m 666 /dev/null c 1 3
    63 niro 1058
    64     # create kmsg too, so udev can add its start-message to dmesg
    65     [ -c /dev/kmsg ] || mknod -m 660 /dev/kmsg c 1 11
    66    
    67     # create problematic directories
    68     mkdir -p /dev/pts /dev/shm
    69     )
    70     evaluate_retval
    71     }
    72    
    73     # main function
    74     start_devicemanager()
    75     {
    76 niro 1813 local udev_prefix=""
    77     local udev_daemon=""
    78    
    79     # get the right daemon and prefix for newer udev/systemd-udev installations
    80     if [ -x /sbin/udevd ]
    81     then
    82     udev_daemon="/sbin/udevd"
    83     udev_prefix=""
    84     elif [ -x /lib/udev/udevd ]
    85     then
    86     udev_daemon="/lib/udev/udevd"
    87     udev_prefix=""
    88     elif [ -x /usr/lib/systemd/systemd-udevd ]
    89     then
    90     udev_daemon="/usr/lib/systemd/systemd-udevd"
    91     udev_prefix="/usr"
    92     fi
    93    
    94 niro 1058 # check if /dev/console exists outside tmpfs
    95     [ -c /dev/console ] ; need_redirect=$?
    96    
    97     # create a ramdisk for populating udev
    98 niro 1868 if [[ -z $(grep '[[:space:]]/dev[[:space:]]' /proc/self/mountinfo) ]]
    99 niro 1725 then
    100     rc_print "Mounting udev at /dev ..."
    101     # many video drivers needed exec access
    102     fstype=ramfs
    103     # tmpfs was suggested by Greg Kroah-Hartman
    104     kernel_supports_fs tmpfs && fstype=tmpfs
    105     # mount devtmpfs if supported
    106     kernel_supports_fs devtmpfs && fstype=devtmpfs
    107     mount -n -t ${fstype} dev /dev -o exec,nosuid,mode=0755,size=10M
    108     evaluate_retval
    109     fi
    110 niro 1058
    111 niro 1813 # if a device tarball exists load it but only if it is activated in the config
    112 niro 1289 rc_print "Configurating system to use udev ..."
    113 niro 1058 if [[ ${RC_DEVICE_TARBALL} = yes ]]
    114     then
    115 niro 1813 if [[ -f ${udev_prefix}/lib/udev/state/devices.tar.bz2 ]]
    116     then
    117     rc_print " Populating /dev with saved device nodes ..."
    118     tar -jxpf ${udev_prefix}/lib/udev/state/devices.tar.bz2 -C /dev
    119     evaluate_retval
    120     fi
    121 niro 1058 fi
    122    
    123 niro 1724 # other needed device nodes with udev
    124 niro 1058 seed_dev
    125    
    126     if [ -e /proc/sys/kernel/hotplug ]
    127     then
    128 niro 1289 rc_print " Using netlink for hotplug events ..."
    129 niro 1058 echo "" > /proc/sys/kernel/hotplug
    130     evaluate_retval
    131     else
    132 niro 1289 rc_print ${COLYELLOW}" Kernel was not compiled with hotplug support !"
    133 niro 1058 print_status failure
    134     fi
    135    
    136     # load unix domain sockets if built as module
    137     if [ -e /proc/modules ]
    138     then
    139     modprobe -q unix 2>/dev/null
    140     fi
    141    
    142 niro 1289 rc_print " Starting udevd daemon ..."
    143 niro 1058 if [ ${need_redirect} -eq 1 ]
    144     then
    145     # we need to open fds 0 1 2
    146 niro 1813 start-stop-daemon --start --exec "${udev_daemon}" -- --daemon </dev/console >/dev/console 2>/dev/console
    147 niro 1058 else
    148 niro 1813 start-stop-daemon --start --exec "${udev_daemon}" -- --daemon
    149 niro 1058 fi
    150     evaluate_retval
    151    
    152     # write root_link rule
    153 niro 1813 if [ -x ${udev_prefix}/lib/udev/write_root_link_rule ]
    154     then
    155     ${udev_prefix}/lib/udev/write_root_link_rule
    156     fi
    157    
    158 niro 1058 # populate udev device nodes
    159     populate_udev
    160    
    161     # create nodes that udev can't
    162 niro 1289 rc_print " Finializing udev configuration ..."
    163 niro 1058 [[ -x /sbin/dmsetup ]] && /sbin/dmsetup mknodes &>/dev/null
    164     [[ -x /sbin/lvm ]] && /sbin/lvm vgscan -P --mknodes --ignorelockingfailure &>/dev/null
    165     [[ -x /sbin/evms_activate ]] && /sbin/evms_activate -q &>/dev/null
    166     print_status success
    167    
    168     # same thing as /dev/.devfsd
    169     touch /dev/.udev
    170     }
    171    
    172     stop_devicemanager()
    173     {
    174 niro 1813 local udev_daemon=""
    175    
    176     # get the right daemon and prefix for newer udev/systemd-udev installations
    177     if [ -x /sbin/udevd ]
    178     then
    179     udev_daemon="/sbin/udevd"
    180     elif [ -x /lib/udev/udevd ]
    181     then
    182     udev_daemon="/lib/udev/udevd"
    183     elif [ -x /usr/lib/systemd/systemd-udevd ]
    184     then
    185     udev_daemon="/usr/lib/systemd/systemd-udevd"
    186     fi
    187    
    188 niro 1289 rc_print "Stopping udevd daemon ..."
    189 niro 1813 start-stop-daemon --stop --exec "${udev_daemon}"
    190 niro 1058 evaluate_retval
    191     }