0175b0747a
* Create a new userspace log daemon for handling logging messages.
Original-Change-Id: I75267df16359684490121e6c31cca48614d79856
Signed-off-by: Nick Kralevich <nnk@google.com>
* Merge conflicts
* rename new syslog daemon to logd to prevent confusion with bionic syslog
* replace racy getGroups call with KISS call to client->getGid()
* Timestamps are filed at logging source
* insert entries into list in timestamp order
* Added LogTimeEntry tail filtration handling
* Added region locking around LogWriter list
* separate threads for each writer
* /dev/socket/logd* permissions
Signed-off-by: Mark Salyzyn <salyzyn@google.com>
(cherry picked from commit 3e76e0a497)
Author: Nick Kralevich <nnk@google.com>
Change-Id: Ice88b1412d8f9daa7f9119b2b5aaf684a5e28098
105 lines
2.7 KiB
C++
105 lines
2.7 KiB
C++
/*
|
|
* Copyright (C) 2012-2013 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 <poll.h>
|
|
#include <sys/socket.h>
|
|
#include <cutils/sockets.h>
|
|
|
|
#include "LogReader.h"
|
|
#include "FlushCommand.h"
|
|
|
|
LogReader::LogReader(LogBuffer *logbuf)
|
|
: SocketListener("logdr", true)
|
|
, mLogbuf(*logbuf)
|
|
{ }
|
|
|
|
// When we are notified a new log entry is available, inform
|
|
// all of our listening sockets.
|
|
void LogReader::notifyNewLog() {
|
|
FlushCommand command(*this);
|
|
runOnEachSocket(&command);
|
|
}
|
|
|
|
bool LogReader::onDataAvailable(SocketClient *cli) {
|
|
char buffer[255];
|
|
|
|
int len = read(cli->getSocket(), buffer, sizeof(buffer) - 1);
|
|
if (len <= 0) {
|
|
doSocketDelete(cli);
|
|
return false;
|
|
}
|
|
buffer[len] = '\0';
|
|
|
|
unsigned long tail = 0;
|
|
static const char _tail[] = " tail=";
|
|
char *cp = strstr(buffer, _tail);
|
|
if (cp) {
|
|
tail = atol(cp + sizeof(_tail) - 1);
|
|
}
|
|
|
|
unsigned int logMask = -1;
|
|
static const char _logIds[] = " lids=";
|
|
cp = strstr(buffer, _logIds);
|
|
if (cp) {
|
|
logMask = 0;
|
|
cp += sizeof(_logIds) - 1;
|
|
while (*cp && *cp != '\0') {
|
|
int val = 0;
|
|
while (('0' <= *cp) && (*cp <= '9')) {
|
|
val *= 10;
|
|
val += *cp - '0';
|
|
++cp;
|
|
}
|
|
logMask |= 1 << val;
|
|
if (*cp != ',') {
|
|
break;
|
|
}
|
|
++cp;
|
|
}
|
|
}
|
|
|
|
pid_t pid = 0;
|
|
static const char _pid[] = " pid=";
|
|
cp = strstr(buffer, _pid);
|
|
if (cp) {
|
|
pid = atol(cp + sizeof(_pid) - 1);
|
|
}
|
|
|
|
bool nonBlock = false;
|
|
if (strncmp(buffer, "dumpAndClose", 12) == 0) {
|
|
nonBlock = true;
|
|
}
|
|
|
|
FlushCommand command(*this, nonBlock, tail, logMask, pid);
|
|
command.runSocketCommand(cli);
|
|
return true;
|
|
}
|
|
|
|
void LogReader::doSocketDelete(SocketClient *cli) {
|
|
LastLogTimes × = mLogbuf.mTimes;
|
|
LogTimeEntry::lock();
|
|
LastLogTimes::iterator it = times.begin();
|
|
while(it != times.end()) {
|
|
LogTimeEntry *entry = (*it);
|
|
if (entry->mClient == cli) {
|
|
times.erase(it);
|
|
entry->release_Locked();
|
|
break;
|
|
}
|
|
it++;
|
|
}
|
|
LogTimeEntry::unlock();
|
|
}
|