1 /*
2 * Copyright (c) 2022 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15 #include "dfx_logger.h"
16
17 #include <cstdio>
18 #include <securec.h>
19 #include <unistd.h>
20 #include "dfx_define.h"
21 #include "dfx_log.h"
22 #include "faultloggerd_client.h"
23
24 static const int WRITE_LOG_BUF_LEN = 2048;
25 static int32_t g_DebugLogFd = INVALID_FD;
26 #ifndef DFX_LOG_USE_HILOG_BASE
27 static int32_t g_StdErrFd = INVALID_FD;
28 #endif
29
WriteLog(int32_t fd,const char * format,...)30 int WriteLog(int32_t fd, const char *format, ...)
31 {
32 int ret;
33 char buf[WRITE_LOG_BUF_LEN] = {0};
34 va_list args;
35 va_start(args, format);
36 ret = vsnprintf_s(buf, sizeof(buf), sizeof(buf) - 1, format, args);
37 if (ret == -1) {
38 DFXLOG_WARN("WriteLog: vsnprintf_s fail");
39 }
40 va_end(args);
41
42 if (g_DebugLogFd != INVALID_FD) {
43 fprintf(stderr, "%s", buf);
44 }
45
46 if (fd >= 0) {
47 ret = dprintf(fd, "%s", buf);
48 if (ret < 0) {
49 DFXLOG_ERROR("WriteLog :: write msg(%s) to fd(%d) failed, ret(%d).", buf, fd, ret);
50 }
51 } else if (fd == INVALID_FD) {
52 ret = DFXLOG_WARN(buf);
53 } else {
54 ret = DFXLOG_DEBUG(buf);
55 }
56
57 return ret;
58 }
59
DfxLogToSocket(const char * msg)60 void DfxLogToSocket(const char *msg)
61 {
62 if (CheckDebugLevel()) {
63 return;
64 }
65
66 size_t length = strlen(msg);
67 if (length >= LOG_BUF_LEN) {
68 return;
69 }
70 int ret = RequestPrintTHilog(msg, length);
71 if (ret < 0) {
72 DFXLOG_ERROR("DfxLogToSocket :: request print msg(%s) failed, ret(%d).", msg, ret);
73 }
74 }
75
InitDebugLog(int type,int pid,int tid,unsigned int uid)76 void InitDebugLog(int type, int pid, int tid, unsigned int uid)
77 {
78 #ifndef DFX_LOG_USE_HILOG_BASE
79 DFXLOG_INFO("InitDebugLog :: type(%d), pid(%d), tid(%d), uid(%d).", type, pid, tid, uid);
80 if (g_DebugLogFd != INVALID_FD) {
81 return;
82 }
83
84 struct FaultLoggerdRequest faultloggerdRequest;
85 (void)memset_s(&faultloggerdRequest, sizeof(faultloggerdRequest), 0, sizeof(struct FaultLoggerdRequest));
86 faultloggerdRequest.type = (int)type;
87 faultloggerdRequest.pid = pid;
88 faultloggerdRequest.tid = tid;
89 faultloggerdRequest.uid = uid;
90
91 g_DebugLogFd = RequestLogFileDescriptor(&faultloggerdRequest);
92 if (g_DebugLogFd <= 0) {
93 DFXLOG_ERROR("InitDebugLog :: RequestLogFileDescriptor failed.");
94 g_DebugLogFd = INVALID_FD;
95 } else {
96 g_StdErrFd = dup(STDERR_FILENO);
97
98 if (dup2(g_DebugLogFd, STDERR_FILENO) == -1) {
99 DFXLOG_ERROR("InitDebugLog :: dup2 failed.");
100 close(g_DebugLogFd);
101 g_DebugLogFd = INVALID_FD;
102 g_StdErrFd = INVALID_FD;
103 }
104 }
105
106 InitDebugFd(g_DebugLogFd);
107 #endif
108 }
109
CloseDebugLog()110 void CloseDebugLog()
111 {
112 #ifndef DFX_LOG_USE_HILOG_BASE
113 if (g_DebugLogFd == INVALID_FD) {
114 return;
115 }
116
117 if (g_StdErrFd != INVALID_FD) {
118 dup2(g_StdErrFd, STDERR_FILENO);
119 }
120 close(g_DebugLogFd);
121 g_DebugLogFd = INVALID_FD;
122 g_StdErrFd = INVALID_FD;
123
124 InitDebugFd(g_DebugLogFd);
125 #endif
126 }
127