iovec(3type) — Linux manual page

iovec(3type)                                                iovec(3type)

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.1-2008.

HISTORY

       POSIX.1-2001.

NOTES

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

SEE ALSO

       process_madvise(2), readv(2)

COLOPHON

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Linux man-pages 6.9.1          2024-05-02                   iovec(3type)

Pages that refer to this page: keyctl(2), process_madvise(2), process_vm_readv(2), readv(2), vmsplice(2)

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