142 lines
3.1 KiB
C
142 lines
3.1 KiB
C
/*-
|
|
* 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)
|
|
{
|
|
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);
|
|
}
|