UIO.H(3HEAD)UIO.H(3HEAD)NAME
uio.h, uio - definitions for vector I/O operations
SYNOPSIS
#include <sys/uio.h>
DESCRIPTION
The <sys/uio.h> header defines the iovec structure, which includes the
following members:
void *iov_base /* base address of a memory region
for input or output */
size_t iov_len /* size of the memory pointed to by
iov_base */
The <sys/uio.h> header uses the iovec structure for scatter/gather I/O.
The ssize_t and size_t types are defined as described in <sys/types.h>.
USAGE
The symbol {IOV_MAX} defined in <limits.h> should always be used to
learn about the limits on the number of scatter/gather elements that
can be processed in one call, instead of assuming a fixed value.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬─────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────┤
│Interface Stability │ Standard │
└────────────────────┴─────────────────┘
SEE ALSOread(2), write(2), limits.h(3HEAD), types.h(3HEAD), attributes(5),
standards(5)
Sep 10, 2004 UIO.H(3HEAD)
