Интерактивная система просмотра системных руководств (man-ов)
VOP_IOCTL (9)
>> VOP_IOCTL (9) ( FreeBSD man: Ядро )
BSD mandoc
NAME
VOP_IOCTL
- device specific control
SYNOPSIS
#include <sys/param.h>
#include <sys/vnode.h>
int
VOP_IOCTL (struct vnode *vp u_long command caddr_t data int fflag struct ucred *cred struct thread *td);
DESCRIPTION
Manipulate a file in device dependent ways.
Its arguments are:
- Fa vp
-
The vnode of the file (normally representing a device).
- Fa command
-
The device specific operation to perform.
- Fa data
-
Extra data for the specified operation.
- Fa fflag
-
Some flags ???
- Fa cred
-
The caller's credentials.
- Fa td
-
The calling thread.
Most file systems do not implement this entry point.
LOCKS
The file should not be locked on entry.
RETURN VALUES
If successful, zero is returned, otherwise an appropriate error code.
If the ioctl is not recognized or not handled,
Er ENOTTY
should be returned.
PSEUDOCODE
int
vop_ioctl(struct vnode *vp, int command, caddr_t data, int fflag,
struct ucred *cred, struct thread *td)
{
return ENOTTY;
}
SEE ALSO
vnode(9)
AUTHORS
This manual page was written by
An Doug Rabson .
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- LOCKS
-
- RETURN VALUES
-
- PSEUDOCODE
-
- SEE ALSO
-
- AUTHORS
-
