71ba16488b
Bug: 119867234 Test: liblog, logcat, logd unit tests Change-Id: I2a33b6fc37f9860c0041e3573bfb59ea389f623c
101 lines
2.5 KiB
C++
101 lines
2.5 KiB
C++
/*
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* Copyright (C) 2007-2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <errno.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <log/log.h>
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#include "config_write.h"
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#include "fake_log_device.h"
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#include "log_portability.h"
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#include "logger.h"
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static int fakeOpen();
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static void fakeClose();
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static int fakeWrite(log_id_t log_id, struct timespec* ts, struct iovec* vec, size_t nr);
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static int logFds[(int)LOG_ID_MAX] = {-1, -1, -1, -1, -1, -1};
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LIBLOG_HIDDEN struct android_log_transport_write fakeLoggerWrite = {
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.node = {&fakeLoggerWrite.node, &fakeLoggerWrite.node},
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.context.priv = &logFds,
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.name = "fake",
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.available = NULL,
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.open = fakeOpen,
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.close = fakeClose,
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.write = fakeWrite,
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};
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static int fakeOpen() {
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int i;
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for (i = 0; i < LOG_ID_MAX; i++) {
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/*
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* Known maximum size string, plus an 8 character margin to deal with
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* possible independent changes to android_log_id_to_name().
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*/
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char buf[sizeof("/dev/log_security") + 8];
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if (logFds[i] >= 0) {
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continue;
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}
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snprintf(buf, sizeof(buf), "/dev/log_%s", android_log_id_to_name(static_cast<log_id_t>(i)));
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logFds[i] = fakeLogOpen(buf);
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if (logFds[i] < 0) {
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fprintf(stderr, "fakeLogOpen(%s) failed\n", buf);
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}
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}
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return 0;
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}
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static void fakeClose() {
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int i;
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for (i = 0; i < LOG_ID_MAX; i++) {
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fakeLogClose(logFds[i]);
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logFds[i] = -1;
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}
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}
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static int fakeWrite(log_id_t log_id, struct timespec*, struct iovec* vec, size_t nr) {
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ssize_t ret;
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size_t i;
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int logFd, len;
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if (/*(int)log_id >= 0 &&*/ (int)log_id >= (int)LOG_ID_MAX) {
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return -EINVAL;
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}
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len = 0;
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for (i = 0; i < nr; ++i) {
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len += vec[i].iov_len;
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}
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if (len > LOGGER_ENTRY_MAX_PAYLOAD) {
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len = LOGGER_ENTRY_MAX_PAYLOAD;
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}
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logFd = logFds[(int)log_id];
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ret = TEMP_FAILURE_RETRY(fakeLogWritev(logFd, vec, nr));
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if (ret < 0) {
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ret = -errno;
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} else if (ret > len) {
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ret = len;
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}
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return ret;
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}
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