include/sys/uio.h

   1 #ifndef _SPL_UIO_H
   2 #define _SPL_UIO_H
   3
   4 #include <linux/uio.h>
   5 #include <asm/uaccess.h>
   6 #include <sys/types.h>
   7
   8 typedef enum uio_rw {
   9         UIO_READ =      0,
  10         UIO_WRITE =     1,
  11 } uio_rw_t;
  12
  13 typedef enum uio_seg {
  14         UIO_USERSPACE = 0,
  15         UIO_SYSSPACE =  1,
  16         UIO_USERISPACE =2,
  17 } uio_seg_t;
  18
  19 typedef struct uio {
  20         struct iovec    *uio_iov;       /* pointer to array of iovecs */
  21         int             uio_iovcnt;     /* number of iovecs */
  22         offset_t        uio_loffset;    /* file offset */
  23         uio_seg_t       uio_segflg;     /* address space (kernel or user) */
  24         uint16_t        uio_fmode;      /* file mode flags */
  25         uint16_t        uio_extflg;     /* extended flags */
  26         offset_t        uio_limit;      /* u-limit (maximum byte offset) */
  27         ssize_t         uio_resid;      /* residual count */
  28 } uio_t;
  29
  30 typedef struct aio_req {
  31         uio_t           *aio_uio;       /* UIO for this request */
  32         void            *aio_private;
  33 } aio_req_t;
  34
  35 /* XXX: Must be fully implemented when ZVOL is needed, for reference:
  36  * http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/os/move.c
  37  */
  38 #if 0
  39 static __inline__ int
  40 uiomove(void *p, size_t n, enum uio_rw rw, struct uio *uio)
  41 {
  42         return 0;
  43 }
  44 #endif
  45
  46 #endif /* SPL_UIO_H */