1/* swc: launch/devmajor-freebsd.c
 2 *
 3 * Copyright (c) 2020 Nia Alarie
 4 * Copyright (c) 2026 uint
 5 * Copyright (c) 2026 chld
 6 *
 7 * Permission is hereby granted, free of charge, to any person obtaining a copy
 8 * of this software and associated documentation files (the "Software"), to deal
 9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 */
25#include "devmajor.h"
26#include <stdlib.h>
27#include <string.h>
28#include <sys/stat.h>
29
30static bool
31devname_is(dev_t rdev, const char *prefix)
32{
33	const char *name;
34	size_t len;
35
36	name = devname(rdev, S_IFCHR);
37	if (!name || name[0] == '?' || name[1] == '?') {
38		return false;
39	}
40
41	len = strlen(prefix);
42	return strncmp(name, prefix, len) == 0;
43}
44
45bool
46device_is_input(dev_t rdev)
47{
48	if (devname_is(rdev, "input/event")) {
49		return true;
50	}
51	if (devname_is(rdev, "kbd")) {
52		return true;
53	}
54	/* mouse(4) lists psm, ums, and sysmouse
55	 * though, psm and ums might not always be availible.
56	 */
57	if (devname_is(rdev, "sysmouse")) {
58		return true;
59	}
60	if (devname_is(rdev, "psm")) {
61		return true;
62	}
63	if (devname_is(rdev, "ums")) {
64		return true;
65	}
66	return false;
67}
68
69bool
70device_is_tty(dev_t rdev)
71{
72	return devname_is(rdev, "ttyv");
73}
74
75bool
76device_is_drm(dev_t rdev)
77{
78	const char *n;
79
80	n = devname(rdev, S_IFCHR);
81	if (!n || n[0] == '?' || n[0] == '#') {
82		return false;
83	}
84
85	return strncmp(n, "drm", 3) == 0 || strncmp(n, "dri/card", 8) == 0 ||
86	       strncmp(n, "dri/renderD", 11) == 0;
87}