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
185
186
187
188
189
190
191
192
193
194
195
196
197
|
// SPDX-License-Identifier: GPL-2.0+
/*
* efi_selftest_variables
*
* Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de>
*
* This unit test checks the runtime services for variables:
* GetVariable, GetNextVariableName, SetVariable, QueryVariableInfo.
*/
#include <efi_selftest.h>
#define EFI_ST_MAX_DATA_SIZE 16
#define EFI_ST_MAX_VARNAME_SIZE 40
static struct efi_boot_services *boottime;
static struct efi_runtime_services *runtime;
static const efi_guid_t guid_vendor0 =
EFI_GUID(0x67029eb5, 0x0af2, 0xf6b1,
0xda, 0x53, 0xfc, 0xb5, 0x66, 0xdd, 0x1c, 0xe6);
static const efi_guid_t guid_vendor1 =
EFI_GUID(0xff629290, 0x1fc1, 0xd73f,
0x8f, 0xb1, 0x32, 0xf9, 0x0c, 0xa0, 0x42, 0xea);
/*
* Setup unit test.
*
* @handle handle of the loaded image
* @systable system table
*/
static int setup(const efi_handle_t img_handle,
const struct efi_system_table *systable)
{
boottime = systable->boottime;
runtime = systable->runtime;
return EFI_ST_SUCCESS;
}
/*
* Execute unit test.
*/
static int execute(void)
{
efi_status_t ret;
efi_uintn_t len;
u32 attr;
u8 v[16] = {0x5d, 0xd1, 0x5e, 0x51, 0x5a, 0x05, 0xc7, 0x0c,
0x35, 0x4a, 0xae, 0x87, 0xa5, 0xdf, 0x0f, 0x65,};
u8 data[EFI_ST_MAX_DATA_SIZE];
u16 varname[EFI_ST_MAX_VARNAME_SIZE];
int flag;
efi_guid_t guid;
u64 max_storage, rem_storage, max_size;
ret = runtime->query_variable_info(EFI_VARIABLE_BOOTSERVICE_ACCESS,
&max_storage, &rem_storage,
&max_size);
if (ret != EFI_SUCCESS) {
efi_st_todo("QueryVariableInfo failed\n");
} else if (!max_storage || !rem_storage || !max_size) {
efi_st_error("QueryVariableInfo: wrong info\n");
return EFI_ST_FAILURE;
}
/* Set variable 0 */
ret = runtime->set_variable(L"efi_st_var0", &guid_vendor0,
EFI_VARIABLE_BOOTSERVICE_ACCESS,
3, v + 4);
if (ret != EFI_SUCCESS) {
efi_st_error("SetVariable failed\n");
return EFI_ST_FAILURE;
}
data[3] = 0xff;
len = 3;
ret = runtime->get_variable(L"efi_st_var0", &guid_vendor0,
&attr, &len, data);
if (ret != EFI_SUCCESS) {
efi_st_error("GetVariable failed\n");
return EFI_ST_FAILURE;
}
if (memcmp(data, v + 4, 3)) {
efi_st_error("GetVariable returned wrong value\n");
return EFI_ST_FAILURE;
}
if (data[3] != 0xff) {
efi_st_error("GetVariable wrote past the end of the buffer\n");
return EFI_ST_FAILURE;
}
/* Set variable 1 */
ret = runtime->set_variable(L"efi_st_var1", &guid_vendor1,
EFI_VARIABLE_BOOTSERVICE_ACCESS,
8, v);
if (ret != EFI_SUCCESS) {
efi_st_error("SetVariable failed\n");
return EFI_ST_FAILURE;
}
len = EFI_ST_MAX_DATA_SIZE;
ret = runtime->get_variable(L"efi_st_var1", &guid_vendor1,
&attr, &len, data);
if (ret != EFI_SUCCESS) {
efi_st_error("GetVariable failed\n");
return EFI_ST_FAILURE;
}
if (len != 8) {
efi_st_error("GetVariable returned wrong length %u\n",
(unsigned int)len);
return EFI_ST_FAILURE;
}
if (memcmp(data, v, 8)) {
efi_st_error("GetVariable returned wrong value\n");
return EFI_ST_FAILURE;
}
/* Append variable 1 */
ret = runtime->set_variable(L"efi_st_var1", &guid_vendor1,
EFI_VARIABLE_BOOTSERVICE_ACCESS |
EFI_VARIABLE_APPEND_WRITE,
7, v + 8);
if (ret != EFI_SUCCESS) {
efi_st_todo("SetVariable(APPEND_WRITE) failed\n");
} else {
len = EFI_ST_MAX_DATA_SIZE;
ret = runtime->get_variable(L"efi_st_var1", &guid_vendor1,
&attr, &len, data);
if (ret != EFI_SUCCESS) {
efi_st_error("GetVariable failed\n");
return EFI_ST_FAILURE;
}
if (len != 15)
efi_st_todo("GetVariable returned wrong length %u\n",
(unsigned int)len);
if (memcmp(data, v, len))
efi_st_todo("GetVariable returned wrong value\n");
}
/* Enumerate variables */
boottime->set_mem(&guid, 16, 0);
*varname = 0;
flag = 0;
for (;;) {
len = EFI_ST_MAX_VARNAME_SIZE;
ret = runtime->get_next_variable_name(&len, varname, &guid);
if (ret == EFI_NOT_FOUND)
break;
if (ret != EFI_SUCCESS) {
efi_st_error("GetNextVariableName failed (%u)\n",
(unsigned int)ret);
return EFI_ST_FAILURE;
}
if (!memcmp(&guid, &guid_vendor0, sizeof(efi_guid_t)) &&
!efi_st_strcmp_16_8(varname, "efi_st_var0"))
flag |= 1;
if (!memcmp(&guid, &guid_vendor1, sizeof(efi_guid_t)) &&
!efi_st_strcmp_16_8(varname, "efi_st_var1"))
flag |= 2;
}
if (flag != 3) {
efi_st_error(
"GetNextVariableName did not return all variables\n");
return EFI_ST_FAILURE;
}
/* Delete variable 1 */
ret = runtime->set_variable(L"efi_st_var1", &guid_vendor1,
0, 0, NULL);
if (ret != EFI_SUCCESS) {
efi_st_error("SetVariable failed\n");
return EFI_ST_FAILURE;
}
len = EFI_ST_MAX_DATA_SIZE;
ret = runtime->get_variable(L"efi_st_var1", &guid_vendor1,
&attr, &len, data);
if (ret != EFI_NOT_FOUND) {
efi_st_error("Variable was not deleted\n");
return EFI_ST_FAILURE;
}
/* Delete variable 0 */
ret = runtime->set_variable(L"efi_st_var0", &guid_vendor0,
0, 0, NULL);
if (ret != EFI_SUCCESS) {
efi_st_error("SetVariable failed\n");
return EFI_ST_FAILURE;
}
len = EFI_ST_MAX_DATA_SIZE;
ret = runtime->get_variable(L"efi_st_var0", &guid_vendor0,
&attr, &len, data);
if (ret != EFI_NOT_FOUND) {
efi_st_error("Variable was not deleted\n");
return EFI_ST_FAILURE;
}
return EFI_ST_SUCCESS;
}
EFI_UNIT_TEST(variables) = {
.name = "variables",
.phase = EFI_EXECUTE_BEFORE_BOOTTIME_EXIT,
.setup = setup,
.execute = execute,
};
|
