NAME

       iovec - Vector I/O data structure

LIBRARY

       Standard C library (libc)

SYNOPSIS

       #include <sys/uio.h>

       struct iovec {
           void   *iov_base;  /* Starting address */
           size_t  iov_len;   /* Size of the memory pointed to by iov_base. */
       };

DESCRIPTION

       Describes  a  region of memory, beginning at iov_base address and with the size of iov_len
       bytes.  System calls use arrays of  this  structure,  where  each  element  of  the  array
       represents  a  memory  region,  and the whole array represents a vector of memory regions.
       The maximum number of iovec structures in that array is limited  by  IOV_MAX  (defined  in
       <limits.h>, or accessible via the call sysconf(_SC_IOV_MAX)).

STANDARDS

       POSIX.1-2001 and later.

NOTES

       The following header also provides this type: <sys/socket.h>.

SEE ALSO

       process_madvise(2), readv(2)