Hi ,
I am using linux 2.6.22 for my embedded box . I am using udev-140 . I have only one 50-rules file , in which 2 rules are written . These 2 rules are for usb-drives . These are working fine for me .
I have some applications like dhclient , udhcpc are started in rcS script . The udevd is started before mounting all hard drives .
********************** rcS*************************
mount /mnt/drive1 /dev/sda
udevstart
udevd &
...........
ManageMyDevices & // it is doing , ifconfig eth1 192.168.1.1 up , dhclient eth0 etc .....
....................
....................
*******************************************************
ManageMyDevices is a elf program written to for all High level api . So udev rules will call theseAPI thru some interface to mount usb drives . But if you connect usb drives and boot the embedded box , those API will fails . Becose , by the time ManageMyDevices is not started .
To work this correctly , i moved the position of udevd down like the below
********************** rcS*************************
mount /mnt/drive1 /dev/sda
ManageMyDevices & // it is doing , ifconfig eth1 192.168.1.1 up , dhclient eth0 etc .....
....................
....................
udevstart
udevd &
...........
*******************************************************
Now everything seems to work ....But if the box boots up and i do ifconfig .........eth0 is down .......Is udevd should be started before doing ifconfig ..
My understanding ...
1) udevd rules does not containg rules for eth0
2) udevd is entirely on userspace
3) udevd is exclusively used for character , block
Thanks,
Karana .
