PawletOS/android_bootable_recovery
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Cleanup the duplicates of logs rotation functions

Browse Source 
Bug: 32067516
Test: Logs rotated successfully on angler, recovery-refresh/persist tests
passed on an a/b device.

Change-Id: Ie80adf0fa958ad3d7869d2d17f49489666b86c29
This commit is contained in:
Tianjie Xu
2016-11-03 18:16:33 -07:00
parent 4011bb161a
commit e113e4d67f
6 changed files with 178 additions and 182 deletions
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recovery.cpp
+6 -84
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@@ -66,8 +66,9 @@
#include "minui/minui.h"
#include "otautil/DirUtil.h"
#include "roots.h"
#include "ui.h"
#include "rotate_logs.h"
#include "screen_ui.h"
#include "ui.h"
struct selabel_handle *sehandle;
@@ -110,7 +111,6 @@ static const char *TEMPORARY_LOG_FILE = "/tmp/recovery.log";
static const char *TEMPORARY_INSTALL_FILE = "/tmp/last_install";
static const char *LAST_KMSG_FILE = "/cache/recovery/last_kmsg";
static const char *LAST_LOG_FILE = "/cache/recovery/last_log";
static const int KEEP_LOG_COUNT = 10;
// We will try to apply the update package 5 times at most in case of an I/O error.
static const int EIO_RETRY_COUNT = 4;
static const int BATTERY_READ_TIMEOUT_IN_SEC = 10;
@@ -447,37 +447,6 @@ static void copy_log_file(const char* source, const char* destination, bool appe
}
}
// Rename last_log -> last_log.1 -> last_log.2 -> ... -> last_log.$max.
// Similarly rename last_kmsg -> last_kmsg.1 -> ... -> last_kmsg.$max.
// Overwrite any existing last_log.$max and last_kmsg.$max.
static void rotate_logs(int max) {
// Logs should only be rotated once.
static bool rotated = false;
if (rotated) {
return;
}
rotated = true;
ensure_path_mounted(LAST_LOG_FILE);
ensure_path_mounted(LAST_KMSG_FILE);
for (int i = max-1; i >= 0; --i) {
std::string old_log = android::base::StringPrintf("%s", LAST_LOG_FILE);
if (i > 0) {
old_log += "." + std::to_string(i);
}
std::string new_log = android::base::StringPrintf("%s.%d", LAST_LOG_FILE, i+1);
// Ignore errors if old_log doesn't exist.
rename(old_log.c_str(), new_log.c_str());
std::string old_kmsg = android::base::StringPrintf("%s", LAST_KMSG_FILE);
if (i > 0) {
old_kmsg += "." + std::to_string(i);
}
std::string new_kmsg = android::base::StringPrintf("%s.%d", LAST_KMSG_FILE, i+1);
rename(old_kmsg.c_str(), new_kmsg.c_str());
}
}
static void copy_logs() {
// We only rotate and record the log of the current session if there are
// actual attempts to modify the flash, such as wipes, installs from BCB
@@ -496,7 +465,9 @@ static void copy_logs() {
return;
}
rotate_logs(KEEP_LOG_COUNT);
ensure_path_mounted(LAST_LOG_FILE);
ensure_path_mounted(LAST_KMSG_FILE);
rotate_logs(LAST_LOG_FILE, LAST_KMSG_FILE);
// Copy logs to cache so the system can find out what happened.
copy_log_file(TEMPORARY_LOG_FILE, LOG_FILE, true);
@@ -1428,56 +1399,6 @@ static void log_failure_code(ErrorCode code, const char *update_package) {
LOG(INFO) << log_content;
}
static ssize_t logbasename(
log_id_t /* logId */,
char /* prio */,
const char *filename,
const char * /* buf */, size_t len,
void *arg) {
if (strstr(LAST_KMSG_FILE, filename) ||
strstr(LAST_LOG_FILE, filename)) {
bool *doRotate = reinterpret_cast<bool *>(arg);
*doRotate = true;
}
return len;
}
static ssize_t logrotate(
log_id_t logId,
char prio,
const char *filename,
const char *buf, size_t len,
void *arg) {
bool *doRotate = reinterpret_cast<bool *>(arg);
if (!*doRotate) {
return __android_log_pmsg_file_write(logId, prio, filename, buf, len);
}
std::string name(filename);
size_t dot = name.find_last_of('.');
std::string sub = name.substr(0, dot);
if (!strstr(LAST_KMSG_FILE, sub.c_str()) &&
!strstr(LAST_LOG_FILE, sub.c_str())) {
return __android_log_pmsg_file_write(logId, prio, filename, buf, len);
}
// filename rotation
if (dot == std::string::npos) {
name += ".1";
} else {
std::string number = name.substr(dot + 1);
if (!isdigit(number.data()[0])) {
name += ".1";
} else {
auto i = std::stoull(number);
name = sub + "." + std::to_string(i + 1);
}
}
return __android_log_pmsg_file_write(logId, prio, name.c_str(), buf, len);
}
int main(int argc, char **argv) {
// We don't have logcat yet under recovery; so we'll print error on screen and
// log to stdout (which is redirected to recovery.log) as we used to do.
@@ -1487,6 +1408,7 @@ int main(int argc, char **argv) {
static const char filter[] = "recovery/";
// Do we need to rotate?
bool doRotate = false;
__android_log_pmsg_file_read(
LOG_ID_SYSTEM, ANDROID_LOG_INFO, filter,
logbasename, &doRotate);