1 /*
2 * QEMU firmware and keymap file search
3 *
4 * Copyright (c) 2003-2020 QEMU contributors
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "qemu/datadir.h"
27 #include "qemu/cutils.h"
28 #include "trace.h"
29
30 static const char *data_dir[16];
31 static int data_dir_idx;
32
qemu_find_file(QemuFileType type,const char * name)33 char *qemu_find_file(QemuFileType type, const char *name)
34 {
35 int i;
36 const char *subdir;
37 char *buf;
38
39 /* Try the name as a straight path first */
40 if (access(name, R_OK) == 0) {
41 trace_load_file(name, name);
42 return g_strdup(name);
43 }
44
45 switch (type) {
46 case QEMU_FILE_TYPE_BIOS:
47 subdir = "";
48 break;
49 case QEMU_FILE_TYPE_DTB:
50 subdir = "dtb/";
51 break;
52 case QEMU_FILE_TYPE_KEYMAP:
53 subdir = "keymaps/";
54 break;
55 default:
56 abort();
57 }
58
59 for (i = 0; i < data_dir_idx; i++) {
60 buf = g_strdup_printf("%s/%s%s", data_dir[i], subdir, name);
61 if (access(buf, R_OK) == 0) {
62 trace_load_file(name, buf);
63 return buf;
64 }
65 g_free(buf);
66 }
67 return NULL;
68 }
69
qemu_add_data_dir(char * path)70 void qemu_add_data_dir(char *path)
71 {
72 int i;
73
74 if (path == NULL) {
75 return;
76 }
77 if (data_dir_idx == ARRAY_SIZE(data_dir)) {
78 return;
79 }
80 for (i = 0; i < data_dir_idx; i++) {
81 if (strcmp(data_dir[i], path) == 0) {
82 g_free(path); /* duplicate */
83 return;
84 }
85 }
86 data_dir[data_dir_idx++] = path;
87 }
88
qemu_add_default_firmwarepath(void)89 void qemu_add_default_firmwarepath(void)
90 {
91 static const char * const dirs[] = {
92 CONFIG_QEMU_FIRMWAREPATH
93 NULL
94 };
95
96 size_t i;
97
98 /* add configured firmware directories */
99 for (i = 0; dirs[i] != NULL; i++) {
100 qemu_add_data_dir(get_relocated_path(dirs[i]));
101 }
102
103 /* try to find datadir relative to the executable path */
104 qemu_add_data_dir(get_relocated_path(CONFIG_QEMU_DATADIR));
105 }
106
qemu_list_data_dirs(void)107 void qemu_list_data_dirs(void)
108 {
109 int i;
110 for (i = 0; i < data_dir_idx; i++) {
111 printf("%s\n", data_dir[i]);
112 }
113 }
114