Defines starting with `o' in sys

• O_ACCMODE sys/fcntl.h:60
• O_APPEND sys/fcntl.h:75
• O_ASYNC sys/fcntl.h:79
• OBUFSIZ sys/tty.h:100
• O_CREAT sys/fcntl.h:82
• ODDP sys/ioctl_compat.h:100
• O_EXCL sys/fcntl.h:84
• O_EXLOCK sys/fcntl.h:78
• OFILESIZE sys/filedesc.h:88
• O_FSYNC sys/fcntl.h:80
• O_NDELAY sys/fcntl.h:116
• ONLCR sys/termios.h:113
• O_NOCTTY sys/fcntl.h:92
• ONOEOT sys/termios.h:115
• O_NONBLOCK sys/fcntl.h:74
• OPEN_MAX sys/syslimits.h:43
• OPMASK sys/namei.h:100
• OPOST sys/termios.h:111
• ORDINARY sys/tty.h:134
• O_RDONLY sys/fcntl.h:57
• O_RDWR sys/fcntl.h:59
• O_SHLOCK sys/fcntl.h:77
• OSIOCGIFADDR sys/ioctl.h:176
• OSIOCGIFBRDADDR sys/ioctl.h:183
• OSIOCGIFCONF sys/ioctl.h:186
• OSIOCGIFDSTADDR sys/ioctl.h:179
• OSIOCGIFNETMASK sys/ioctl.h:188
• OTIOCCONS sys/ioctl_compat.h:162
• O_TRUNC sys/fcntl.h:83
• OTTYDISC sys/ioctl_compat.h:163
• O_WRONLY sys/fcntl.h:58
• OXTABS sys/termios.h:114