1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include "env-util.h"
#include "errno-util.h"
#include "kbd-util.h"
#include "log.h"
#include "path-util.h"
#include "recurse-dir.h"
#include "set.h"
#include "string-util.h"
#include "strv.h"
#include "utf8.h"
#define KBD_KEYMAP_DIRS \
"/usr/share/keymaps/", \
"/usr/share/kbd/keymaps/", \
"/usr/lib/kbd/keymaps/"
int keymap_directories(char ***ret) {
assert(ret);
if (getenv_path_list("SYSTEMD_KEYMAP_DIRECTORIES", ret) >= 0)
return 0;
char **paths = strv_new(KBD_KEYMAP_DIRS);
if (!paths)
return log_oom_debug();
*ret = TAKE_PTR(paths);
return 0;
}
struct recurse_dir_userdata {
const char *keymap_name;
Set *keymaps;
};
static int keymap_recurse_dir_callback(
RecurseDirEvent event,
const char *path,
int dir_fd,
int inode_fd,
const struct dirent *de,
const struct statx *sx,
void *userdata) {
struct recurse_dir_userdata *data = userdata;
_cleanup_free_ char *p = NULL;
int r;
assert(de);
/* If 'keymap_name' is non-NULL, return true if keymap 'keymap_name' is found. Otherwise, add all
* keymaps to 'keymaps'. */
if (event != RECURSE_DIR_ENTRY)
return RECURSE_DIR_CONTINUE;
if (!IN_SET(de->d_type, DT_REG, DT_LNK))
return RECURSE_DIR_CONTINUE;
const char *e = endswith(de->d_name, ".map") ?: endswith(de->d_name, ".map.gz");
if (!e)
return RECURSE_DIR_CONTINUE;
p = strndup(de->d_name, e - de->d_name);
if (!p)
return -ENOMEM;
if (data->keymap_name)
return streq(p, data->keymap_name) ? 1 : RECURSE_DIR_CONTINUE;
assert(data->keymaps);
if (!keymap_is_valid(p))
return 0;
r = set_consume(data->keymaps, TAKE_PTR(p));
if (r < 0)
return r;
return RECURSE_DIR_CONTINUE;
}
int get_keymaps(char ***ret) {
_cleanup_set_free_free_ Set *keymaps = NULL;
_cleanup_strv_free_ char **keymap_dirs = NULL;
int r;
r = keymap_directories(&keymap_dirs);
if (r < 0)
return r;
keymaps = set_new(&string_hash_ops);
if (!keymaps)
return -ENOMEM;
STRV_FOREACH(dir, keymap_dirs) {
r = recurse_dir_at(
AT_FDCWD,
*dir,
/* statx_mask= */ 0,
/* n_depth_max= */ UINT_MAX,
RECURSE_DIR_IGNORE_DOT|RECURSE_DIR_ENSURE_TYPE,
keymap_recurse_dir_callback,
&(struct recurse_dir_userdata) {
.keymaps = keymaps,
});
if (r == -ENOENT)
continue;
if (ERRNO_IS_NEG_RESOURCE(r))
return log_warning_errno(r, "Failed to read keymap list from %s: %m", *dir);
if (r < 0)
log_debug_errno(r, "Failed to read keymap list from %s, ignoring: %m", *dir);
}
_cleanup_strv_free_ char **l = set_get_strv(keymaps);
if (!l)
return -ENOMEM;
keymaps = set_free(keymaps); /* If we got the strv above, then do a set_free() rather than
* set_free_free() since the entries of the set are now owned by the
* strv */
if (strv_isempty(l))
return -ENOENT;
strv_sort(l);
*ret = TAKE_PTR(l);
return 0;
}
bool keymap_is_valid(const char *name) {
if (isempty(name))
return false;
if (strlen(name) >= 128)
return false;
if (!utf8_is_valid(name))
return false;
if (!filename_is_valid(name))
return false;
if (!string_is_safe(name))
return false;
return true;
}
int keymap_exists(const char *name) {
_cleanup_strv_free_ char **keymap_dirs = NULL;
int r;
if (!keymap_is_valid(name))
return -EINVAL;
r = keymap_directories(&keymap_dirs);
if (r < 0)
return r;
STRV_FOREACH(dir, keymap_dirs) {
r = recurse_dir_at(
AT_FDCWD,
*dir,
/* statx_mask= */ 0,
/* n_depth_max= */ UINT_MAX,
RECURSE_DIR_IGNORE_DOT|RECURSE_DIR_ENSURE_TYPE,
keymap_recurse_dir_callback,
&(struct recurse_dir_userdata) {
.keymap_name = name,
});
if (r > 0)
return true;
if (ERRNO_IS_NEG_RESOURCE(r))
return r;
if (r < 0 && r != -ENOENT)
log_debug_errno(r, "Failed to read keymap list from %s, ignoring: %m", *dir);
}
return false;
}
|
