/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (C) 2018 Universita` di Pisa
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <net/netmap_user.h>
#define LIBNETMAP_NOTHREADSAFE
#include "libnetmap.h"
static void
nmctx_default_error(struct nmctx *ctx, const char *errmsg)
{
(void)ctx;
fprintf(stderr, "%s\n", errmsg);
}
static void *
nmctx_default_malloc(struct nmctx *ctx, size_t sz)
{
(void)ctx;
return malloc(sz);
}
static void
nmctx_default_free(struct nmctx *ctx, void *p)
{
(void)ctx;
free(p);
}
static struct nmctx nmctx_global = {
.verbose = 1,
.error = nmctx_default_error,
.malloc = nmctx_default_malloc,
.free = nmctx_default_free,
.lock = NULL,
};
static struct nmctx *nmctx_default = &nmctx_global;
struct nmctx *
nmctx_get(void)
{
return nmctx_default;
}
struct nmctx *
nmctx_set_default(struct nmctx *ctx)
{
struct nmctx *old = nmctx_default;
nmctx_default = ctx;
return old;
}
#define MAXERRMSG 1000
void
nmctx_ferror(struct nmctx *ctx, const char *fmt, ...)
{
char errmsg[MAXERRMSG];
va_list ap;
int rv;
if (!ctx->verbose)
return;
va_start(ap, fmt);
rv = vsnprintf(errmsg, MAXERRMSG, fmt, ap);
va_end(ap);
if (rv > 0) {
if (rv < MAXERRMSG) {
ctx->error(ctx, errmsg);
} else {
ctx->error(ctx, "error message too long");
}
} else {
ctx->error(ctx, "internal error");
}
}
void *
nmctx_malloc(struct nmctx *ctx, size_t sz)
{
return ctx->malloc(ctx, sz);
}
void
nmctx_free(struct nmctx *ctx, void *p)
{
ctx->free(ctx, p);
}
void
nmctx_lock(struct nmctx *ctx)
{
if (ctx->lock != NULL)
ctx->lock(ctx, 1);
}
void
nmctx_unlock(struct nmctx *ctx)
{
if (ctx->lock != NULL)
ctx->lock(ctx, 0);
}
