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
|
/*
** Copyright 2013-2014, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#include "log/log_read.h"
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <sched.h>
#include <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <android/log.h>
#include "logd_reader.h"
#include "logger.h"
#include "pmsg_reader.h"
/* method for getting the associated sublog id */
log_id_t android_logger_get_id(struct logger* logger) {
return static_cast<log_id_t>(reinterpret_cast<uintptr_t>(logger) & LOGGER_LOG_ID_MASK);
}
static struct logger_list* android_logger_list_alloc_internal(int mode, unsigned int tail,
log_time start, pid_t pid) {
auto* logger_list = static_cast<struct logger_list*>(calloc(1, sizeof(struct logger_list)));
if (!logger_list) {
return nullptr;
}
logger_list->mode = mode;
logger_list->start = start;
logger_list->tail = tail;
logger_list->pid = pid;
return logger_list;
}
struct logger_list* android_logger_list_alloc(int mode, unsigned int tail, pid_t pid) {
return android_logger_list_alloc_internal(mode, tail, log_time(0, 0), pid);
}
struct logger_list* android_logger_list_alloc_time(int mode, log_time start, pid_t pid) {
return android_logger_list_alloc_internal(mode, 0, start, pid);
}
/* Open the named log and add it to the logger list */
struct logger* android_logger_open(struct logger_list* logger_list, log_id_t logId) {
if (!logger_list || (logId >= LOG_ID_MAX)) {
return nullptr;
}
logger_list->log_mask |= 1 << logId;
uintptr_t logger = logId;
logger |= (logger_list->mode & ANDROID_LOG_PSTORE) ? LOGGER_PMSG : LOGGER_LOGD;
return reinterpret_cast<struct logger*>(logger);
}
/* Open the single named log and make it part of a new logger list */
struct logger_list* android_logger_list_open(log_id_t logId, int mode, unsigned int tail,
pid_t pid) {
struct logger_list* logger_list = android_logger_list_alloc(mode, tail, pid);
if (!logger_list) {
return NULL;
}
if (!android_logger_open(logger_list, logId)) {
android_logger_list_free(logger_list);
return NULL;
}
return logger_list;
}
int android_logger_list_read(struct logger_list* logger_list, struct log_msg* log_msg) {
if (logger_list == nullptr || logger_list->log_mask == 0) {
return -EINVAL;
}
int ret = 0;
#ifdef __ANDROID__
if (logger_list->mode & ANDROID_LOG_PSTORE) {
ret = PmsgRead(logger_list, log_msg);
} else {
ret = LogdRead(logger_list, log_msg);
}
#endif
if (ret <= 0) {
return ret;
}
if (ret > LOGGER_ENTRY_MAX_LEN) {
ret = LOGGER_ENTRY_MAX_LEN;
}
if (ret < static_cast<int>(sizeof(log_msg->entry))) {
return -EINVAL;
}
if (log_msg->entry.hdr_size < sizeof(log_msg->entry) ||
log_msg->entry.hdr_size >= LOGGER_ENTRY_MAX_LEN - sizeof(log_msg->entry)) {
return -EINVAL;
}
if (log_msg->entry.len > ret - log_msg->entry.hdr_size) {
return -EINVAL;
}
log_msg->buf[log_msg->entry.len + log_msg->entry.hdr_size] = '\0';
return ret;
}
/* Close all the logs */
void android_logger_list_free(struct logger_list* logger_list) {
if (logger_list == NULL) {
return;
}
#ifdef __ANDROID__
if (logger_list->mode & ANDROID_LOG_PSTORE) {
PmsgClose(logger_list);
} else {
LogdClose(logger_list);
}
#endif
free(logger_list);
}
|
