size[4] Topen tag[2] fid[4] mode[1]

Constants
OREAD = 0
 

The following constant definitions originate from: swtch.com/usr/local/plan9/include/libc.h

OWRITE = 1
ORDWR = 2
OEXEC = 3
OTRUNC = 16
OCEXEC = 32
ORCLOSE = 64
ODIRECT = 128
ONONBLOCK = 256
OEXCL = 0x1000
OLOCK = 0x2000
OAPPEND = 0x4000