RequestEdit

Index Word Description
0 Header code [0x001300C2]
1 Socket descriptor
2 int cmd
3 arg
4 Value 0x20 (processID header)
5 ProcessID set by the ARM11 kernel.

ResponseEdit

Index Word Description
0 Header code
1 Result code
2 POSIX return value

DescriptionEdit

The input cmd must be either F_GETFL(3)/F_SETFL(4), otherwise an error is returned. For fd-flags, O_NONBLOCK is bitmask value 0x4.