uio(5)                                                               uio(5)

NAME
     uio - definitions for vector I/O operations

SYNOPSIS
     #include <sys/uio.h>

DESCRIPTION
     The <sys/uio.h> header defines the iovec structure that includes at
     least the following members:

     void   *iovbase    Base address of a memory region for input or out-
                         put.

     sizet  iovlen     The size of the memory pointed to by iovbase.

     The following are declared as functions and may also be defined as
     macros:

     ssizet readv(int fildes, const struct iovec *iov, int iovcnt);
     ssizet writev(int fildes, const struct iovec *iov, int iovcnt);

SEE ALSO
     read(2), write(2).
































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