logd: liblog: logcat: Add LogWhiteBlackList
- liblog android_logger_get_log_size and android_logger_get_readable_size
adjusted to return long instead of int because of -G flag extending range
NB: ifdef'd only for userdebug and eng builds
- liblog Add android_logger_[sg]et_prune_list and android_logger_set_log_size
- logcat Add -P, -p and -G flags
- logd Add LogWhiteBlackList and configurable log size
(cherry picked from commit 18a5432158ad43b8faefe4950b30e760200ce0b4)
Change-Id: I1572338c1b34bd968ad7867857ef708156ec3b6a
diff --git a/logd/LogWhiteBlackList.cpp b/logd/LogWhiteBlackList.cpp
new file mode 100644
index 0000000..d0ceb9f
--- /dev/null
+++ b/logd/LogWhiteBlackList.cpp
@@ -0,0 +1,243 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#ifdef USERDEBUG_BUILD
+
+#include <ctype.h>
+
+#include <utils/String8.h>
+
+#include "LogWhiteBlackList.h"
+
+// White and Black list
+
+Prune::Prune(uid_t uid, pid_t pid)
+ : mUid(uid)
+ , mPid(pid)
+{ }
+
+int Prune::cmp(uid_t uid, pid_t pid) const {
+ if ((mUid == uid_all) || (mUid == uid)) {
+ if (mPid == pid_all) {
+ return 0;
+ }
+ return pid - mPid;
+ }
+ return uid - mUid;
+}
+
+void Prune::format(char **strp) {
+ if (mUid != uid_all) {
+ asprintf(strp, (mPid != pid_all) ? "%u/%u" : "%u", mUid, mPid);
+ } else {
+ // NB: mPid == pid_all can not happen if mUid == uid_all
+ asprintf(strp, (mPid != pid_all) ? "/%u" : "/", mPid);
+ }
+}
+
+PruneList::PruneList()
+ : mWorstUidEnabled(true) {
+ mNaughty.clear();
+ mNice.clear();
+}
+
+PruneList::~PruneList() {
+ PruneCollection::iterator it;
+ for (it = mNice.begin(); it != mNice.end();) {
+ delete (*it);
+ it = mNice.erase(it);
+ }
+ for (it = mNaughty.begin(); it != mNaughty.end();) {
+ delete (*it);
+ it = mNaughty.erase(it);
+ }
+}
+
+int PruneList::init(char *str) {
+ mWorstUidEnabled = true;
+ PruneCollection::iterator it;
+ for (it = mNice.begin(); it != mNice.end();) {
+ delete (*it);
+ it = mNice.erase(it);
+ }
+ for (it = mNaughty.begin(); it != mNaughty.end();) {
+ delete (*it);
+ it = mNaughty.erase(it);
+ }
+
+ if (!str) {
+ return 0;
+ }
+
+ mWorstUidEnabled = false;
+
+ for(; *str; ++str) {
+ if (isspace(*str)) {
+ continue;
+ }
+
+ PruneCollection *list;
+ if ((*str == '~') || (*str == '!')) { // ~ supported, ! undocumented
+ ++str;
+ // special case, translates to worst UID at priority in blacklist
+ if (*str == '!') {
+ mWorstUidEnabled = true;
+ ++str;
+ if (!*str) {
+ break;
+ }
+ if (!isspace(*str)) {
+ return 1;
+ }
+ continue;
+ }
+ if (!*str) {
+ return 1;
+ }
+ list = &mNaughty;
+ } else {
+ list = &mNice;
+ }
+
+ uid_t uid = Prune::uid_all;
+ if (isdigit(*str)) {
+ uid = 0;
+ do {
+ uid = uid * 10 + *str++ - '0';
+ } while (isdigit(*str));
+ }
+
+ pid_t pid = Prune::pid_all;
+ if (*str == '/') {
+ ++str;
+ if (isdigit(*str)) {
+ pid = 0;
+ do {
+ pid = pid * 10 + *str++ - '0';
+ } while (isdigit(*str));
+ }
+ }
+
+ if ((uid == Prune::uid_all) && (pid == Prune::pid_all)) {
+ return 1;
+ }
+
+ if (*str && !isspace(*str)) {
+ return 1;
+ }
+
+ // insert sequentially into list
+ PruneCollection::iterator it = list->begin();
+ while (it != list->end()) {
+ Prune *p = *it;
+ int m = uid - p->mUid;
+ if (m == 0) {
+ if (p->mPid == p->pid_all) {
+ break;
+ }
+ if ((pid == p->pid_all) && (p->mPid != p->pid_all)) {
+ it = list->erase(it);
+ continue;
+ }
+ m = pid - p->mPid;
+ }
+ if (m >= 0) {
+ if (m > 0) {
+ list->insert(it, new Prune(uid,pid));
+ }
+ break;
+ }
+ ++it;
+ }
+ if (it == list->end()) {
+ list->push_back(new Prune(uid,pid));
+ }
+ if (!*str) {
+ break;
+ }
+ }
+
+ return 0;
+}
+
+void PruneList::format(char **strp) {
+ if (*strp) {
+ free(*strp);
+ *strp = NULL;
+ }
+
+ static const char nice_format[] = " %s";
+ const char *fmt = nice_format + 1;
+
+ android::String8 string;
+
+ if (mWorstUidEnabled) {
+ string.setTo("~!");
+ fmt = nice_format;
+ }
+
+ PruneCollection::iterator it;
+
+ for (it = mNice.begin(); it != mNice.end(); ++it) {
+ char *a = NULL;
+ (*it)->format(&a);
+
+ string.appendFormat(fmt, a);
+ fmt = nice_format;
+
+ free(a);
+ }
+
+ static const char naughty_format[] = " ~%s";
+ fmt = naughty_format + (*fmt != ' ');
+ for (it = mNaughty.begin(); it != mNaughty.end(); ++it) {
+ char *a = NULL;
+ (*it)->format(&a);
+
+ string.appendFormat(fmt, a);
+ fmt = naughty_format;
+
+ free(a);
+ }
+
+ *strp = strdup(string.string());
+}
+
+// ToDo: Lists are in sorted order, Prune->cmp() returns + or -
+// If there is scaling issues, resort to a better algorithm than linear
+// based on these assumptions.
+
+bool PruneList::naughty(LogBufferElement *element) {
+ PruneCollection::iterator it;
+ for (it = mNaughty.begin(); it != mNaughty.end(); ++it) {
+ if (!(*it)->cmp(element)) {
+ return true;
+ }
+ }
+ return false;
+}
+
+bool PruneList::nice(LogBufferElement *element) {
+ PruneCollection::iterator it;
+ for (it = mNice.begin(); it != mNice.end(); ++it) {
+ if (!(*it)->cmp(element)) {
+ return true;
+ }
+ }
+ return false;
+}
+
+#endif // USERDEBUG_BUILD