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1/* $OpenBSD: debug.c,v 1.2 2017/12/13 12:30:18 helg Exp $ */
2/*
3 * Copyright (c) 2011 Alexandre Ratchov <alex@caoua.org>
4 *
5 * Permission to use, copy, modify, and distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18#include <stdlib.h>
19#include <unistd.h>
20
21#include "debug.h"
22
23/*
24 * debug level, -1 means uninitialized
25 */
26int ifuse_debug = -1;
27
28void
29ifuse_debug_init(void)
30{
31 char *dbg;
32
33 /* Default to level 1 unless FUSE_DEBUG environment variable is set. */
34 if (ifuse_debug < 0) {
35 dbg = issetugid() ? NULL : getenv("FUSE_DEBUG");
36 if (!dbg || sscanf(dbg, "%u", &ifuse_debug) != 1)
37 ifuse_debug = 1;
38 }
39}