Accesses blocks of a file.
int vn_strategy (vp, bp, crp) struct vnode *vp; struct buf *bp; struct ucred *crp;
|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.|
Note: The vn_strategy entry point is not implemented in Version 3.2 of the operating system.
The vn_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.
Nonzero return values are returned from the /usr/include/sys/errno.h file to indicate failure.
The buf structure.
Virtual File System Overview, Virtual File System Kernel Extensions Overview, Logical File System Overview, Understanding Virtual Nodes (V-nodes) in AIX Kernel Extensions and Device Support Programming Concepts.
List of Virtual File System Operations.