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/*******************************************************************************
* Copyright (C) 2011, Linaro Limited.
*
* This file is part of PowerDebug.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Daniel Lezcano <daniel.lezcano@linaro.org> (IBM Corporation)
* - initial API and implementation
*******************************************************************************/
#define _GNU_SOURCE
#include <stdio.h>
#undef _GNU_SOURCE
#include <stdlib.h>
/*
* This functions is a helper to read a specific file content and store
* the content inside a variable pointer passed as parameter, the format
* parameter gives the variable type to be read from the file.
*
* @path : directory path containing the file
* @name : name of the file to be read
* @format : the format of the format
* @value : a pointer to a variable to store the content of the file
* Returns 0 on success, -1 otherwise
*/
int file_read_value(const char *path, const char *name,
const char *format, void *value)
{
FILE *file;
char *rpath;
int ret;
ret = asprintf(&rpath, "%s/%s", path, name);
if (ret < 0)
return ret;
file = fopen(rpath, "r");
if (!file) {
ret = -1;
goto out_free;
}
ret = fscanf(file, format, value) == EOF ? -1 : 0;
fclose(file);
out_free:
free(rpath);
return ret;
}
/*
* This functions is a helper to write a specific file content and store
* the content inside a variable pointer passed as parameter, the format
* parameter gives the variable type to be write to the file.
*
* @path : directory path containing the file
* @name : name of the file to be read
* @format : the format of the format
* @value : a pointer to a variable to store the content of the file
* Returns 0 on success, -1 otherwise
*/
int file_write_value(const char *path, const char *name,
const char *format, void *value)
{
FILE *file;
char *rpath;
int ret;
ret = asprintf(&rpath, "%s/%s", path, name);
if (ret < 0)
return ret;
file = fopen(rpath, "w");
if (!file) {
ret = -1;
goto out_free;
}
ret = fprintf(file, format, value) < 0 ? -1 : 0;
fclose(file);
out_free:
free(rpath);
return ret;
}
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