[O]
[..]
- O32_BASE
- O32_FLAGS
- O32_SIZE
- OBJINVALID
- OBJREAD
- OBJWRITE
- OBJ_INVALID
- OBJ_SZ_TO_BLOCKS
- OFFSET
- OFFSET_MAP_END
- OFFSET_MAP_MAJDEV
- OFFSET_MAP_PROT
- OFFSET_MAP_START
- OFFSET_TOO_BIG
- OFFSET_VALID
- ONES
- OPENBSD
- OPORT
- OPT_MAP_ANON
- OPT_PROT_EXEC
- OPT_RA
- OPT_THRESHOLD
- OR_WORD
- OR_WORD_EXIT_IF_SET
- OS2
- OSF1
- OS_TYPE
- OTHER_FLAG
- OUTCHK
- OUTPUT_NOT_ENOUGH
- OUT_OF_MEMORY
[..]