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Annotation of 43BSD/sys/h/uio.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1982, 1986 Regents of the University of California.
                      3:  * All rights reserved.  The Berkeley software License Agreement
                      4:  * specifies the terms and conditions for redistribution.
                      5:  *
                      6:  *     @(#)uio.h       7.1 (Berkeley) 6/4/86
                      7:  */
                      8: 
                      9: #ifndef _UIO_
                     10: #define        _UIO_
                     11: 
                     12: struct iovec {
                     13:        caddr_t iov_base;
                     14:        int     iov_len;
                     15: };
                     16: 
                     17: struct uio {
                     18:        struct  iovec *uio_iov;
                     19:        int     uio_iovcnt;
                     20:        off_t   uio_offset;
                     21:        int     uio_segflg;
                     22:        int     uio_resid;
                     23: };
                     24: 
                     25: enum   uio_rw { UIO_READ, UIO_WRITE };
                     26: 
                     27: /*
                     28:  * Segment flag values (should be enum).
                     29:  */
                     30: #define UIO_USERSPACE  0               /* from user data space */
                     31: #define UIO_SYSSPACE   1               /* from system space */
                     32: #define UIO_USERISPACE 2               /* from user I space */
                     33: #endif

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