librtas_src/ofdt.c File Reference

#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include "librtas.h"
#include "common.h"

Defines
#define	BLOCK_SIZE   4096
Functions
static int	open_prop_file (const char *prop_path, const char *prop_name, int *fd)
	Open the property name located at the specified property path.
static int	get_property (const char *prop_path, const char *prop_name, char **prop_val, size_t *prop_len)
	Open a property file and read in its contents.
int	rtas_token (const char *call_name)
	Retrive a rtas token for a given name.
int	read_entire_file (int fd, char **buf, size_t *len)
	Read in an entire file into the supplied buffer.
Variables
static const char *	ofdt_rtas_path = "/proc/device-tree/rtas"

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Detailed Description

Copyright (C) 2005 IBM Corporation Common Public License Version 1.0 (see COPYRIGHT)

Author:

John Rose <johnrose@us.ibm.com>

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Define Documentation

#define BLOCK_SIZE   4096

Referenced by read_entire_file().

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Function Documentation

static int get_property	(	const char *	prop_path,
		const char *	prop_name,
		char **	prop_val,
		size_t *	prop_len
	)			[static]

get_property

Parameters:

	prop_path	path to the property file
	prop_name	propery name
	prop_val
	prop_len

Returns:

0 on success, !0 otherwise

References open_prop_file(), and read_entire_file().

Referenced by rtas_token().

static int open_prop_file	(	const char *	prop_path,
		const char *	prop_name,
		int *	fd
	)			[static]

open_prop_file

Parameters:

	prop_path	path to the property name
	prop_name	property name
	fd	reference to file descriptor

Returns:

0 on success, -1 on failure

Referenced by get_property().

int read_entire_file	(	int	fd,
		char **	buf,
		size_t *	len
	)

read_entire_file

Parameters:

	fd	opened file descriptor for file to read
	buf	buffer to read file into
	len	variable to return amount read into buffer

Returns:

0 on success, !0 otherwise

References BLOCK_SIZE, and dbg1.

Referenced by get_property(), and read_kregion_bounds().

int rtas_token

(

const char *

call_name

)

rtas_token

Parameters:

call_name

rtas name to retrieve token for

Returns:

0 on success, !0 otherwise

References get_property(), ofdt_rtas_path, and RTAS_UNKNOWN_OP.

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Variable Documentation

const char* ofdt_rtas_path = "/proc/device-tree/rtas" [static]

Referenced by rtas_token().