e113e4d67f
Bug: 32067516 Test: Logs rotated successfully on angler, recovery-refresh/persist tests passed on an a/b device. Change-Id: Ie80adf0fa958ad3d7869d2d17f49489666b86c29
71 lines
2.6 KiB
C++
71 lines
2.6 KiB
C++
/*
|
|
* Copyright (C) 2016 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.
|
|
*/
|
|
|
|
//
|
|
// Strictly to deal with reboot into system after OTA, then
|
|
// reboot while in system before boot complete landing us back
|
|
// into recovery to continue with any mitigations with retained
|
|
// log history. This simply refreshes the pmsg files from
|
|
// the last pmsg file contents.
|
|
//
|
|
// Usage:
|
|
// recovery-refresh [--force-rotate|--rotate]
|
|
//
|
|
// All file content representing in the recovery/ directory stored in
|
|
// /sys/fs/pstore/pmsg-ramoops-0 in logger format that reside in the
|
|
// LOG_ID_SYSTEM buffer at ANDROID_LOG_INFO priority or higher is
|
|
// refreshed into /dev/pmsg0. This ensures that an unexpected reboot
|
|
// before recovery-persist is run will still contain the associated
|
|
// pmsg Android Logger content.
|
|
//
|
|
// --force-rotate recovery/last_kmsg and recovery.last_log files are
|
|
// rotated with .<number> suffixes upwards.
|
|
// --rotate rotated only if rocovery/last_msg or recovery/last_log
|
|
// exist, otherwise perform 1:1 refresh.
|
|
//
|
|
|
|
#include <string.h>
|
|
#include <string>
|
|
|
|
#include <private/android_logger.h> /* private pmsg functions */
|
|
|
|
#include "rotate_logs.h"
|
|
|
|
int main(int argc, char **argv) {
|
|
static const char filter[] = "recovery/";
|
|
static const char force_rotate_flag[] = "--force-rotate";
|
|
static const char rotate_flag[] = "--rotate";
|
|
ssize_t ret;
|
|
bool doRotate = false;
|
|
// Take last pmsg contents and rewrite it to the current pmsg session.
|
|
if ((argc <= 1) || !argv[1] ||
|
|
(((doRotate = strcmp(argv[1], rotate_flag))) &&
|
|
strcmp(argv[1], force_rotate_flag))) {
|
|
doRotate = false;
|
|
} else if (!doRotate) {
|
|
// Do we need to rotate?
|
|
__android_log_pmsg_file_read(
|
|
LOG_ID_SYSTEM, ANDROID_LOG_INFO, filter,
|
|
logbasename, &doRotate);
|
|
}
|
|
|
|
// Take action to refresh pmsg contents
|
|
ret = __android_log_pmsg_file_read(
|
|
LOG_ID_SYSTEM, ANDROID_LOG_INFO, filter,
|
|
logrotate, &doRotate);
|
|
|
|
return (ret < 0) ? ret : 0;
|
|
}
|