1/*
2   Unix SMB/CIFS implementation.
3
4   common events code for fd events
5
6   Copyright (C) Stefan Metzmacher 2009
7
8     ** NOTE! The following LGPL license applies to the tevent
9     ** library. This does NOT imply that all of Samba is released
10     ** under the LGPL
11
12   This library is free software; you can redistribute it and/or
13   modify it under the terms of the GNU Lesser General Public
14   License as published by the Free Software Foundation; either
15   version 3 of the License, or (at your option) any later version.
16
17   This library is distributed in the hope that it will be useful,
18   but WITHOUT ANY WARRANTY; without even the implied warranty of
19   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
20   Lesser General Public License for more details.
21
22   You should have received a copy of the GNU Lesser General Public
23   License along with this library; if not, see <http://www.gnu.org/licenses/>.
24*/
25
26#include "replace.h"
27#include "tevent.h"
28#include "tevent_internal.h"
29#include "tevent_util.h"
30
31int tevent_common_fd_destructor(struct tevent_fd *fde)
32{
33	if (fde->event_ctx) {
34		DLIST_REMOVE(fde->event_ctx->fd_events, fde);
35	}
36
37	if (fde->close_fn) {
38		fde->close_fn(fde->event_ctx, fde, fde->fd, fde->private_data);
39		fde->fd = -1;
40	}
41
42	return 0;
43}
44
45struct tevent_fd *tevent_common_add_fd(struct tevent_context *ev, TALLOC_CTX *mem_ctx,
46				       int fd, uint16_t flags,
47				       tevent_fd_handler_t handler,
48				       void *private_data,
49				       const char *handler_name,
50				       const char *location)
51{
52	struct tevent_fd *fde;
53
54	fde = talloc(mem_ctx?mem_ctx:ev, struct tevent_fd);
55	if (!fde) return NULL;
56
57	fde->event_ctx		= ev;
58	fde->fd			= fd;
59	fde->flags		= flags;
60	fde->handler		= handler;
61	fde->close_fn		= NULL;
62	fde->private_data	= private_data;
63	fde->handler_name	= handler_name;
64	fde->location		= location;
65	fde->additional_flags	= 0;
66	fde->additional_data	= NULL;
67
68	DLIST_ADD(ev->fd_events, fde);
69
70	talloc_set_destructor(fde, tevent_common_fd_destructor);
71
72	return fde;
73}
74uint16_t tevent_common_fd_get_flags(struct tevent_fd *fde)
75{
76	return fde->flags;
77}
78
79void tevent_common_fd_set_flags(struct tevent_fd *fde, uint16_t flags)
80{
81	if (fde->flags == flags) return;
82	fde->flags = flags;
83}
84
85void tevent_common_fd_set_close_fn(struct tevent_fd *fde,
86				   tevent_fd_close_fn_t close_fn)
87{
88	fde->close_fn = close_fn;
89}
90