VOP_STRATEGY9
Read or write a file system buffer
Usage
#include <sys/param.h>
#include <sys/buf.h>
#include <sys/vnode.h>
int
VOP_STRATEGY(struct vnode *vp, struct buf *bp);
Overview
The arguments are:
- vp
-
The vnode that the buffer is for.
- bp
-
The buffer to be read or written.
This call either reads or writes data from a file, depending on the value of bp->b_iocmd.
The call may block.
Return values
Always zero. Errors should be signalled by setting the BIO_ERROR bit in bp->b_ioflags and setting bp->b_error to the appropriate errno value.
Releases
83 releases since FreeBSD 2.2.2-RELEASE; the text changed 43 times.