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util-linux-ng: update to 2.19.1
[crossrootfs.git] / udev / start_udev
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1#!/bin/sh
2
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3# - if /dev is not mounted - mount as a devtmpfs (CONFIG_DEVTMPFS=y) or tmpfs
4# - if /dev is mounted (e.g. due to handover from initramfs or
5# CONFIG_DEVTMPFS_MOUNT=y), remount with specific options
6# - some video drivers require exec access in /dev, thus it's set here
7# - for completness, we add few sanity limits (2k non-empty files, 16k inodes)
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9UDEVOPTS="exec,nosuid,noatime,mode=0755,nr_blocks=2048,nr_inodes=16384"
10if /bin/mountpoint -q /dev ; then
11 /bin/mount -n -o remount,${UDEVOPTS} dev /dev
12else
13 if /bin/sed -n '/devtmpfs/q1' /proc/filesystems ; then
14 UDEVFS=tmpfs
15 else
16 UDEVFS=devtmpfs
17 fi
18 /bin/mount -n -t $UDEVFS -o ${UDEVOPTS} dev /dev
19fi
20
21# make sure hotplugger is not set
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22echo > /proc/sys/kernel/hotplug
23
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24# since v155, udevd automatically copies /lib/udev/devices
25# and creates /proc/{kcore,self/fd/{0,1,2}} symlinks
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27# launch udev daemon, make sure it's not running first
28test -z "$(/bin/pidof -s udevd)" && /sbin/udevd --daemon
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29
30# coldplug devices and wait for the queue to be processed
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31/sbin/udevadm trigger --type=subsystems --action=add
32/sbin/udevadm trigger --type=devices --action=add
33/sbin/udevadm settle
34
35# retry any failures
36/sbin/udevadm trigger --type=failed --action=add
6dca1d21 37/sbin/udevadm settle