DragonFly On-Line Manual Pages

VOP_GETPAGES(9)       DragonFly Kernel Developer's Manual      VOP_GETPAGES(9)

NAME
     VOP_GETPAGES, VOP_PUTPAGES - read or write VM pages from a file

SYNOPSIS
     #include <sys/param.h>
     #include <sys/vnode.h>
     #include <vm/vm.h>

     int
     VOP_GETPAGES(struct vnode *vp, vm_page_t *m, int count, int reqpage,
         vm_ooffset_t offset, int seqaccess);

     int
     VOP_PUTPAGES(struct vnode *vp, vm_page_t *m, int count, int flags,
         int *rtvals, vm_ooffset_t offset);

DESCRIPTION
     The arguments are:

     vp             The file to access.

     m              Pointer to a page array representing a contiguous region
                    of the file to be read or written.

     count          The length of this array.

     flags          OBJPC_* flags, see <vm/vm_pager.h>.

     rtvals         An array of VM system result codes indicating the status
                    of each page written by VOP_PUTPAGES().

     reqpage        Index of the requested page.

     offset         Offset in the file to start accessing.

     seqaccess      Sequential access.

RETURN VALUES
     Zero is returned on success, otherwise an error is returned.

SEE ALSO
     vnode(9)

AUTHORS
     This man page was written by Doug Rabson.

DragonFly 5.9-DEVELOPMENT         May 6, 2020        DragonFly 5.9-DEVELOPMENT