1 | /* |
2 | * Copyright (C) 2015-2016 Gerd Hoffmann <kraxel@redhat.com> |
3 | * |
4 | * This library is free software; you can redistribute it and/or |
5 | * modify it under the terms of the GNU Lesser General Public |
6 | * License as published by the Free Software Foundation; either |
7 | * version 2.1 of the License, or (at your option) any later version. |
8 | * |
9 | * This library is distributed in the hope that it will be useful, |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
12 | * Lesser General Public License for more details. |
13 | * |
14 | * You should have received a copy of the GNU Lesser General Public |
15 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
16 | */ |
17 | #include "qemu/osdep.h" |
18 | #include "qemu/drm.h" |
19 | |
20 | #include <glob.h> |
21 | #include <dirent.h> |
22 | |
23 | int qemu_drm_rendernode_open(const char *rendernode) |
24 | { |
25 | DIR *dir; |
26 | struct dirent *e; |
27 | int r, fd; |
28 | char *p; |
29 | |
30 | if (rendernode) { |
31 | return open(rendernode, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); |
32 | } |
33 | |
34 | dir = opendir("/dev/dri" ); |
35 | if (!dir) { |
36 | return -1; |
37 | } |
38 | |
39 | fd = -1; |
40 | while ((e = readdir(dir))) { |
41 | if (e->d_type != DT_CHR) { |
42 | continue; |
43 | } |
44 | |
45 | if (strncmp(e->d_name, "renderD" , 7)) { |
46 | continue; |
47 | } |
48 | |
49 | p = g_strdup_printf("/dev/dri/%s" , e->d_name); |
50 | |
51 | r = open(p, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK); |
52 | if (r < 0) { |
53 | g_free(p); |
54 | continue; |
55 | } |
56 | fd = r; |
57 | g_free(p); |
58 | break; |
59 | } |
60 | |
61 | closedir(dir); |
62 | if (fd < 0) { |
63 | return -1; |
64 | } |
65 | return fd; |
66 | } |
67 | |