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fd.h
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/*
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* Copyright (c) 2008-2010 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2009 Sandia National Laboratories. All rights reserved.
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*
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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/* @file */
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#ifndef OPAL_UTIL_FD_H_
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#define OPAL_UTIL_FD_H_
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#include "opal_config.h"
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BEGIN_C_DECLS
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/**
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* Read a complete buffer from a file descriptor.
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*
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* @param fd File descriptor
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* @param len Number of bytes to read
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* @param buffer Pre-allocated buffer (large enough to hold len bytes)
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*
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* @returns OPAL_SUCCESS upon success.
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* @returns OPAL_ERR_TIMEOUT if the fd closes before reading the full amount.
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* @returns OPAL_ERR_IN_ERRNO otherwise.
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*
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* Loop over reading from the fd until len bytes are read or an error
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* occurs. EAGAIN and EINTR are transparently handled.
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*/
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OPAL_DECLSPEC
int
opal_fd_read(
int
fd,
int
len,
void
*buffer);
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/**
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* Write a complete buffer to a file descriptor.
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*
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* @param fd File descriptor
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* @param len Number of bytes to write
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* @param buffer Buffer to write from
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*
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* @returns OPAL_SUCCESS upon success.
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* @returns OPAL_ERR_IN_ERRNO otherwise.
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*
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* Loop over writing to the fd until len bytes are written or an error
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* occurs. EAGAIN and EINTR are transparently handled.
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*/
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OPAL_DECLSPEC
int
opal_fd_write(
int
fd,
int
len,
const
void
*buffer);
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END_C_DECLS
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#endif
opal
util
fd.h
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