Purpose
Accesses
blocks of a file.
Syntax
int vnop_strategy ( vp, bp, crp)
struct vnode *vp;
struct buf *bp;
struct ucred *crp;
Description
Note: The vnop_strategy entry
point is not implemented in Version 3.2 of the operating system.
The vnop_strategy entry point accesses
blocks of a file. This entry point is intended to provide a block-oriented
interface for servers for efficiency in paging.
Parameters
| Item |
Description |
|---|
| vp |
Points to the
virtual node (v-node) of the file. |
| bp |
Points to a buf structure
that describes the buffer. |
| crp |
Points to the cred structure. This structure contains
data that applications can use to validate access permission. |
Return
Values
| Item |
Description |
|---|
| 0 |
Indicates success. |
Nonzero return values are returned
from the /usr/include/sys/errno.h file to indicate failure.