1 /*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <gtest/gtest.h>
18
19 #include <errno.h>
20 #include <stdio.h>
21
TEST(libc,__pstore_append)22 TEST(libc, __pstore_append) {
23 #ifdef __ANDROID__
24 #ifndef NO_PSTORE
25 if (access("/dev/pmsg0", W_OK) != 0) {
26 GTEST_SKIP() << "pmsg0 not found, skipping test";
27 }
28
29 FILE* fp;
30 ASSERT_TRUE(NULL != (fp = fopen("/dev/pmsg0", "ae")));
31 static const char message[] = "libc.__pstore_append\n";
32 ASSERT_EQ((size_t)1, fwrite(message, sizeof(message), 1, fp));
33 int fflushReturn = fflush(fp);
34 int fflushErrno = fflushReturn ? errno : 0;
35 ASSERT_EQ(0, fflushReturn);
36 ASSERT_EQ(0, fflushErrno);
37 int fcloseReturn = fclose(fp);
38 int fcloseErrno = fcloseReturn ? errno : 0;
39 ASSERT_EQ(0, fcloseReturn);
40 ASSERT_EQ(0, fcloseErrno);
41 if ((fcloseErrno == ENOMEM) || (fflushErrno == ENOMEM)) {
42 fprintf(stderr,
43 "Kernel does not have space allocated to pmsg pstore driver "
44 "configured\n");
45 }
46 if (!fcloseReturn && !fcloseErrno && !fflushReturn && !fflushErrno) {
47 fprintf(stderr,
48 "Reboot, ensure string libc.__pstore_append is in "
49 "/sys/fs/pstore/pmsg-ramoops-0\n");
50 }
51 #else /* NO_PSTORE */
52 GTEST_LOG_(INFO) << "This test does nothing because of NO_PSTORE.\n";
53 #endif /* NO_PSTORE */
54 #else
55 GTEST_LOG_(INFO) << "This test does nothing.\n";
56 #endif
57 }
58