SYS$GETDVI (OpenVMS) SYS$GETDVI (OpenVMS)
NAME
fcntl - control open file descriptors
ioctl - control devices
SYS$GETDVI - Get device and channel information
SYS$GETDVIW - Get device and channel information and wait
EXPLAINATION
The Digital UNIX fcntl and ioctl system calls provides functionality
similar to the OpenVMS SYS$GETDVI system service. The fcntl system
call can return the status flags for the descriptor, the asynchronous
I/O owner for a descriptor, or any locks on a file descriptor. The
ioctl system call can return device specific information. Requests for
ioctl system calls are unique to the device in question. Tty device
information is documented in the tty(7) man page. Socket device inforā
mation is in the networking(7) manual page. The fcntl and ioctl system
calls complete synchronously.
RELATED INFORMATION
Digital UNIX Functions:
fcntl(2), ioctl(2), tty(7), networking(7) delim off
SYS$GETDVI (OpenVMS)