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      1 /*
      2  * Copyright (C) 2016 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 <fcntl.h>
     18 #include <string.h>
     19 #include <sys/types.h>
     20 #include <unistd.h>
     21 
     22 #include <android/log.h>
     23 #include <gtest/gtest.h>
     24 #include <log/logger.h>
     25 #include <private/android_logger.h>
     26 
     27 static const char myFilename[] = "/data/misc/recovery/inject.txt";
     28 static const char myContent[] = "Hello World\nWelcome to my recovery\n";
     29 
     30 // Failure is expected on systems that do not deliver either the
     31 // recovery-persist or recovery-refresh executables. Tests also require
     32 // a reboot sequence of test to truly verify.
     33 
     34 static ssize_t __pmsg_fn(log_id_t logId, char prio, const char *filename,
     35                          const char *buf, size_t len, void *arg) {
     36     EXPECT_EQ(LOG_ID_SYSTEM, logId);
     37     EXPECT_EQ(ANDROID_LOG_INFO, prio);
     38     EXPECT_EQ(0, NULL == strstr(myFilename,filename));
     39     EXPECT_EQ(0, strcmp(myContent, buf));
     40     EXPECT_EQ(sizeof(myContent), len);
     41     EXPECT_EQ(0, NULL != arg);
     42     return len;
     43 }
     44 
     45 // recovery.refresh - May fail. Requires recovery.inject, two reboots,
     46 //                    then expect success after second reboot.
     47 TEST(recovery, refresh) {
     48     EXPECT_EQ(0, access("/system/bin/recovery-refresh", F_OK));
     49 
     50     ssize_t ret = __android_log_pmsg_file_read(
     51         LOG_ID_SYSTEM, ANDROID_LOG_INFO, "recovery/", __pmsg_fn, NULL);
     52     if (ret == -ENOENT) {
     53         EXPECT_LT(0, __android_log_pmsg_file_write(
     54             LOG_ID_SYSTEM, ANDROID_LOG_INFO,
     55             myFilename, myContent, sizeof(myContent)));
     56         fprintf(stderr, "injected test data, "
     57                         "requires two intervening reboots "
     58                         "to check for replication\n");
     59     }
     60     EXPECT_EQ((ssize_t)sizeof(myContent), ret);
     61 }
     62 
     63 // recovery.persist - Requires recovery.inject, then a reboot, then
     64 //                    expect success after for this test on that boot.
     65 TEST(recovery, persist) {
     66     EXPECT_EQ(0, access("/system/bin/recovery-persist", F_OK));
     67 
     68     ssize_t ret = __android_log_pmsg_file_read(
     69         LOG_ID_SYSTEM, ANDROID_LOG_INFO, "recovery/", __pmsg_fn, NULL);
     70     if (ret == -ENOENT) {
     71         EXPECT_LT(0, __android_log_pmsg_file_write(
     72             LOG_ID_SYSTEM, ANDROID_LOG_INFO,
     73             myFilename, myContent, sizeof(myContent)));
     74         fprintf(stderr, "injected test data, "
     75                         "requires intervening reboot "
     76                         "to check for storage\n");
     77     }
     78 
     79     int fd = open(myFilename, O_RDONLY);
     80     EXPECT_LE(0, fd);
     81 
     82     char buf[sizeof(myContent) + 32];
     83     ret = read(fd, buf, sizeof(buf));
     84     close(fd);
     85     EXPECT_EQ(ret, (ssize_t)sizeof(myContent));
     86     EXPECT_EQ(0, strcmp(myContent, buf));
     87     if (fd >= 0) {
     88         fprintf(stderr, "Removing persistent test data, "
     89                         "check if reconstructed on reboot\n");
     90     }
     91     EXPECT_EQ(0, unlink(myFilename));
     92 }
     93