- case IFBLK:
- /*
- * We don't want to really close the device if it is mounted
- */
- for (mp = mount; mp < &mount[NMOUNT]; mp++)
- if (mp->m_bufp != NULL && mp->m_dev == dev)
- return;
- cfunc = bdevsw[major(dev)].d_close;
+vn_read(fp, uio, cred)
+ struct file *fp;
+ struct uio *uio;
+ struct ucred *cred;
+{
+ register struct vnode *vp = (struct vnode *)fp->f_data;
+ int count, error;
+
+ VOP_LOCK(vp);
+ uio->uio_offset = fp->f_offset;
+ count = uio->uio_resid;
+ error = VOP_READ(vp, uio, (fp->f_flag & FNDELAY) ? IO_NDELAY : 0, cred);
+ fp->f_offset += count - uio->uio_resid;
+ VOP_UNLOCK(vp);
+ return (error);
+}
+
+vn_write(fp, uio, cred)
+ struct file *fp;
+ struct uio *uio;
+ struct ucred *cred;
+{
+ register struct vnode *vp = (struct vnode *)fp->f_data;
+ int count, error, ioflag = 0;
+
+ if (vp->v_type == VREG && (fp->f_flag & FAPPEND))
+ ioflag |= IO_APPEND;
+ if (fp->f_flag & FNDELAY)
+ ioflag |= IO_NDELAY;
+ VOP_LOCK(vp);
+ uio->uio_offset = fp->f_offset;
+ count = uio->uio_resid;
+ error = VOP_WRITE(vp, uio, ioflag, cred);
+ if (ioflag & IO_APPEND)
+ fp->f_offset = uio->uio_offset;
+ else
+ fp->f_offset += count - uio->uio_resid;
+ VOP_UNLOCK(vp);
+ return (error);
+}
+
+/*
+ * Get stat info for a vnode.
+ */
+vn_stat(vp, sb)
+ struct vnode *vp;
+ register struct stat *sb;
+{
+ struct vattr vattr;
+ register struct vattr *vap;
+ int error;
+ u_short mode;
+
+ vap = &vattr;
+ error = VOP_GETATTR(vp, vap, u.u_cred);
+ if (error)
+ return (error);
+ /*
+ * Copy from vattr table
+ */
+ sb->st_dev = vap->va_fsid;
+ sb->st_ino = vap->va_fileid;
+ mode = vap->va_mode;
+ switch (vp->v_type) {
+ case VREG:
+ mode |= S_IFREG;
+ break;
+ case VDIR:
+ mode |= S_IFDIR;
+ break;
+ case VBLK:
+ mode |= S_IFBLK;
+ break;
+ case VCHR:
+ mode |= S_IFCHR;
+ break;
+ case VLNK:
+ mode |= S_IFLNK;
+ break;
+ case VSOCK:
+ mode |= S_IFSOCK;
+ break;
+ case VFIFO:
+ mode |= S_IFIFO;