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
|
// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/component_updater/component_updater_paths.h"
#include "base/files/file_path.h"
#include "base/lazy_instance.h"
#include "base/path_service.h"
namespace component_updater {
namespace {
// This key gives the root directory of all the component installations.
static int g_components_preinstalled_root_key = -1;
static int g_components_preinstalled_root_key_alt = -1;
static int g_components_user_root_key = -1;
} // namespace
bool PathProvider(int key, base::FilePath* result) {
DCHECK_GT(g_components_user_root_key, 0);
DCHECK_GT(g_components_preinstalled_root_key, 0);
// Early exit here to prevent a potential infinite loop when we retrieve
// the path for g_components_*_root_key.
if (key < PATH_START || key > PATH_END)
return false;
switch (key) {
case DIR_COMPONENT_PREINSTALLED:
return base::PathService::Get(g_components_preinstalled_root_key, result);
case DIR_COMPONENT_PREINSTALLED_ALT:
return base::PathService::Get(g_components_preinstalled_root_key_alt,
result);
case DIR_COMPONENT_USER:
return base::PathService::Get(g_components_user_root_key, result);
}
base::FilePath cur;
if (!base::PathService::Get(g_components_user_root_key, &cur))
return false;
switch (key) {
case DIR_COMPONENT_CLD2:
cur = cur.Append(FILE_PATH_LITERAL("CLD"));
break;
case DIR_RECOVERY_BASE:
cur = cur.Append(FILE_PATH_LITERAL("recovery"));
break;
case DIR_SWIFT_SHADER:
cur = cur.Append(FILE_PATH_LITERAL("SwiftShader"));
break;
default:
return false;
}
*result = cur;
return true;
}
// This cannot be done as a static initializer sadly since Visual Studio will
// eliminate this object file if there is no direct entry point into it.
void RegisterPathProvider(int components_preinstalled_root_key,
int components_preinstalled_root_key_alt,
int components_user_root_key) {
DCHECK_EQ(g_components_preinstalled_root_key, -1);
DCHECK_EQ(g_components_preinstalled_root_key_alt, -1);
DCHECK_EQ(g_components_user_root_key, -1);
DCHECK_GT(components_preinstalled_root_key, 0);
DCHECK_GT(components_preinstalled_root_key_alt, 0);
DCHECK_GT(components_user_root_key, 0);
DCHECK(components_preinstalled_root_key < PATH_START ||
components_preinstalled_root_key > PATH_END);
DCHECK(components_preinstalled_root_key_alt < PATH_START ||
components_preinstalled_root_key_alt > PATH_END);
DCHECK(components_user_root_key < PATH_START ||
components_user_root_key > PATH_END);
g_components_preinstalled_root_key = components_preinstalled_root_key;
g_components_preinstalled_root_key_alt = components_preinstalled_root_key_alt;
g_components_user_root_key = components_user_root_key;
base::PathService::RegisterProvider(PathProvider, PATH_START, PATH_END);
}
} // namespace component_updater
|
