Section 3 · Library functions

iovec.3type

Package: man-pages

iovec

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
STANDARDS
HISTORY
NOTES
SEE ALSO

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>.