Android platform file system

On typical Linux file system the root directory "/" has a node number equaled 2.
Nodes with number 1 are bad blocks.
Other files and directories have different node numbers.

However, in practice, mobile file system yaffs2, which is used by Android platform has another behavior:
all directories in the root directory as well as the root itself have node number equaled 1!

Android ifconfig vs netcfg

On my Android emulator ifconfig shows nothing.

In order to get all interfaces on your emulator or device you could use netcfg:

# netcfg
lo       UP    127.0.0.1    255.0.0.0    0x00000049
dummy0   DOWN  0.0.0.0      0.0.0.0      0x00000082
rmnet0   DOWN  0.0.0.0      0.0.0.0      0x00001002
rmnet1   DOWN  0.0.0.0      0.0.0.0      0x00001002
rmnet2   DOWN  0.0.0.0      0.0.0.0      0x00001002
tiwlan0  DOWN  0.0.0.0      0.0.0.0      0x00001002

Linux kernel 2.6

Yesterday kernel team has announced new stable linux kernel 2.6.31.6.