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uio(3head) [bsd man page]

uio.h(3HEAD)							      Headers							      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 ALSO
read(2), write(2), limits.h(3HEAD), types.h(3HEAD), attributes(5), standards(5) SunOS 5.10 10 Sep 2004 uio.h(3HEAD)

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uio.h(3HEAD)							      Headers							      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 ALSO
read(2), write(2), limits.h(3HEAD), types.h(3HEAD), attributes(5), standards(5) SunOS 5.10 10 Sep 2004 uio.h(3HEAD)

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