1/* $NetBSD: session.c,v 1.1 2022/01/22 07:53:06 pho Exp $ */
2
3/*
4 * Copyright (c) 2021 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote
16 *    products derived from this software without specific prior written
17 *    permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
20 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
21 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
23 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
25 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
28 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
29 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33#if !defined(lint)
34__RCSID("$NetBSD: session.c,v 1.1 2022/01/22 07:53:06 pho Exp $");
35#endif /* !lint */
36
37#include <err.h>
38#include <fuse_internal.h>
39#include <puffs.h>
40
41/* The documentation for FUSE is not clear as to what "struct fuse_session" is,
42 * why it exists, or how it's different from "struct fuse". For now we leave it
43 * undefined (i.e. an incomplete type) and treat "struct fuse_session *" as
44 * being identical to "struct fuse *". */
45
46struct fuse_session *
47fuse_get_session(struct fuse *f) {
48    return (struct fuse_session*)f;
49}
50
51int
52fuse_session_fd(struct fuse_session *se) {
53    struct fuse* fuse = (struct fuse*)se;
54
55    /* We don't want to expose this to users, but filesystems in the wild often
56     * wants to set FD_CLOEXEC on it. Hope they don't assume it's the real
57     * /dev/fuse, because it's actually /dev/puffs in our implementation. */
58    return puffs_getselectable(fuse->pu);
59}
60
61int
62fuse_set_signal_handlers(struct fuse_session *se) {
63    return __fuse_set_signal_handlers((struct fuse*)se);
64}
65
66void
67fuse_remove_signal_handlers(struct fuse_session *se) {
68    if (__fuse_remove_signal_handlers((struct fuse*)se) == -1)
69        warn("%s: failed to remove signal handlers", __func__);
70}
71