/* Copyright 2013 The Chromium Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file. */
#ifndef LIBRARIES_NACL_IO_IOCTL_H_
#define LIBRARIES_NACL_IO_IOCTL_H_
#include <sys/types.h>
/*
* ioctl to register an output handler with the tty node. Will fail with
* EALREADY if a handler is already registered. Expects an argument of type
* tioc_nacl_output. The handler will be called during calls to write() on the
* thread that calls write(), or, for echoed input during the
* NACL_IOC_HANDLEMESSAGE ioctl() on the thread calling ioctl(). The handler
* should return the number of bytes written/handled, or -errno if an error
* occurred.
*/
#define TIOCNACLOUTPUT 0xadcd03
/*
* ioctl used to set a name for a JavaScript pipe. The name
* is a string that is used to uniquely identify messages posted to and from
* JavaScript which signifies that the message is destined for a
* particular pipe device. For this reason each device must have a
* unique prefix. Until a prefix is set on a given pipe any I/O operations
* will return EIO.
*/
#define NACL_IOC_PIPE_SETNAME 0xadcd04
/*
* Find out how much space is available in a nacl_io pipe.
* Argument type is "int*" which will be set to the amount of space in the
* pipe in bytes.
*/
#define NACL_IOC_PIPE_GETOSPACE 0xadcd06
#define NACL_IOC_PIPE_GETISPACE 0xadcd07
/*
* ioctl used to pass messages from JavaScript to a node.
* Argument type is "struct PP_Var*".
*/
#define NACL_IOC_HANDLEMESSAGE 0xadcd05
typedef char* naclioc_jspipe_name;
typedef ssize_t (*tioc_nacl_output_handler_t)(const char* buf,
size_t count,
void* user_data);
struct tioc_nacl_output {
tioc_nacl_output_handler_t handler;
void* user_data;
};
#endif // LIBRARIES_NACL_IO_IOCTL_H_
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