error.c

/*
 * Copyright (C) 2006 by Latchesar Ionkov <lucho@ionkov.net>
 * Copyright (C) 2010-2014 by Lawrence Livermore National Security, LLC.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the next
 * paragraph) shall be included in all copies or substantial portions of the
 * Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * LATCHESAR IONKOV AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdarg.h>
#include <stdint.h>
#include <pthread.h>
#include "9p.h"
#include "npfs.h"

static pthread_key_t error_key;
static pthread_once_t error_once = PTHREAD_ONCE_INIT;

static void
np_init_error_key(void)
{
	pthread_key_create(&error_key, NULL);
}

void
np_uerror(unsigned long ecode)
{
	pthread_once(&error_once, np_init_error_key);
	pthread_setspecific(error_key, (void *)ecode);
}

unsigned long
np_rerror(void)
{
	pthread_once(&error_once, np_init_error_key);
	return (unsigned long)pthread_getspecific(error_key);
}