270 lines
7.4 KiB
C
270 lines
7.4 KiB
C
/*
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* Copyright (C) 2007 The Android Open Source Project
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* Copyright (c) 2009, The Linux Foundation. All rights reserved.
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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 <time.h>
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#include <stdio.h>
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#ifdef HAVE_PTHREADS
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#include <pthread.h>
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#endif
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#include <unistd.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <cutils/logger.h>
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#include <cutils/logd.h>
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#include <cutils/log.h>
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#define LOG_BUF_SIZE 1024
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#if FAKE_LOG_DEVICE
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// This will be defined when building for the host.
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#define log_open(pathname, flags) fakeLogOpen(pathname, flags)
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#define log_writev(filedes, vector, count) fakeLogWritev(filedes, vector, count)
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#define log_close(filedes) fakeLogClose(filedes)
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#else
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#define log_open(pathname, flags) open(pathname, flags)
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#define log_writev(filedes, vector, count) writev(filedes, vector, count)
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#define log_close(filedes) close(filedes)
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#endif
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static int __write_to_log_init(log_id_t, struct iovec *vec, size_t nr);
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static int (*write_to_log)(log_id_t, struct iovec *vec, size_t nr) = __write_to_log_init;
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#ifdef HAVE_PTHREADS
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static pthread_mutex_t log_init_lock = PTHREAD_MUTEX_INITIALIZER;
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#endif
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static int log_fds[(int)LOG_ID_MAX] = { -1, -1, -1, -1 };
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/*
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* This is used by the C++ code to decide if it should write logs through
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* the C code. Basically, if /dev/log/... is available, we're running in
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* the simulator rather than a desktop tool and want to use the device.
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*/
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static enum {
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kLogUninitialized, kLogNotAvailable, kLogAvailable
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} g_log_status = kLogUninitialized;
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int __android_log_dev_available(void)
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{
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if (g_log_status == kLogUninitialized) {
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if (access("/dev/"LOGGER_LOG_MAIN, W_OK) == 0)
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g_log_status = kLogAvailable;
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else
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g_log_status = kLogNotAvailable;
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}
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return (g_log_status == kLogAvailable);
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}
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static int __write_to_log_null(log_id_t log_fd, struct iovec *vec, size_t nr)
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{
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return -1;
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}
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static int __write_to_log_kernel(log_id_t log_id, struct iovec *vec, size_t nr)
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{
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ssize_t ret;
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int log_fd;
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if (/*(int)log_id >= 0 &&*/ (int)log_id < (int)LOG_ID_MAX) {
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log_fd = log_fds[(int)log_id];
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} else {
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return EBADF;
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}
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do {
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ret = log_writev(log_fd, vec, nr);
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} while (ret < 0 && errno == EINTR);
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return ret;
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}
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static int __write_to_log_init(log_id_t log_id, struct iovec *vec, size_t nr)
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{
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#ifdef HAVE_PTHREADS
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pthread_mutex_lock(&log_init_lock);
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#endif
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if (write_to_log == __write_to_log_init) {
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log_fds[LOG_ID_MAIN] = log_open("/dev/"LOGGER_LOG_MAIN, O_WRONLY);
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log_fds[LOG_ID_RADIO] = log_open("/dev/"LOGGER_LOG_RADIO, O_WRONLY);
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log_fds[LOG_ID_EVENTS] = log_open("/dev/"LOGGER_LOG_EVENTS, O_WRONLY);
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log_fds[LOG_ID_SYSTEM] = log_open("/dev/"LOGGER_LOG_SYSTEM, O_WRONLY);
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write_to_log = __write_to_log_kernel;
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if (log_fds[LOG_ID_MAIN] < 0 || log_fds[LOG_ID_RADIO] < 0 ||
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log_fds[LOG_ID_EVENTS] < 0) {
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log_close(log_fds[LOG_ID_MAIN]);
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log_close(log_fds[LOG_ID_RADIO]);
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log_close(log_fds[LOG_ID_EVENTS]);
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log_fds[LOG_ID_MAIN] = -1;
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log_fds[LOG_ID_RADIO] = -1;
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log_fds[LOG_ID_EVENTS] = -1;
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write_to_log = __write_to_log_null;
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}
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if (log_fds[LOG_ID_SYSTEM] < 0) {
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log_fds[LOG_ID_SYSTEM] = log_fds[LOG_ID_MAIN];
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}
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}
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#ifdef HAVE_PTHREADS
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pthread_mutex_unlock(&log_init_lock);
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#endif
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return write_to_log(log_id, vec, nr);
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}
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int __android_log_write(int prio, const char *tag, const char *msg)
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{
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struct iovec vec[3];
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log_id_t log_id = LOG_ID_MAIN;
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if (!tag)
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tag = "";
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/* XXX: This needs to go! */
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if (!strcmp(tag, "HTC_RIL") ||
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!strncmp(tag, "RIL", 3) || /* Any log tag with "RIL" as the prefix */
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!strcmp(tag, "AT") ||
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!strcmp(tag, "GSM") ||
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!strcmp(tag, "STK") ||
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!strcmp(tag, "CDMA") ||
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!strcmp(tag, "PHONE") ||
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!strcmp(tag, "SMS"))
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log_id = LOG_ID_RADIO;
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vec[0].iov_base = (unsigned char *) &prio;
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vec[0].iov_len = 1;
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vec[1].iov_base = (void *) tag;
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vec[1].iov_len = strlen(tag) + 1;
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vec[2].iov_base = (void *) msg;
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vec[2].iov_len = strlen(msg) + 1;
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return write_to_log(log_id, vec, 3);
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}
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int __android_log_buf_write(int bufID, int prio, const char *tag, const char *msg)
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{
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struct iovec vec[3];
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if (!tag)
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tag = "";
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/* XXX: This needs to go! */
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if (!strcmp(tag, "HTC_RIL") ||
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!strncmp(tag, "RIL", 3) || /* Any log tag with "RIL" as the prefix */
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!strcmp(tag, "AT") ||
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!strcmp(tag, "GSM") ||
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!strcmp(tag, "STK") ||
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!strcmp(tag, "CDMA") ||
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!strcmp(tag, "PHONE") ||
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!strcmp(tag, "SMS"))
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bufID = LOG_ID_RADIO;
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vec[0].iov_base = (unsigned char *) &prio;
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vec[0].iov_len = 1;
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vec[1].iov_base = (void *) tag;
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vec[1].iov_len = strlen(tag) + 1;
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vec[2].iov_base = (void *) msg;
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vec[2].iov_len = strlen(msg) + 1;
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return write_to_log(bufID, vec, 3);
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}
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int __android_log_vprint(int prio, const char *tag, const char *fmt, va_list ap)
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{
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char buf[LOG_BUF_SIZE];
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vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
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return __android_log_write(prio, tag, buf);
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}
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int __android_log_print(int prio, const char *tag, const char *fmt, ...)
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{
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va_list ap;
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char buf[LOG_BUF_SIZE];
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va_start(ap, fmt);
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vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
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va_end(ap);
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return __android_log_write(prio, tag, buf);
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}
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int __android_log_buf_print(int bufID, int prio, const char *tag, const char *fmt, ...)
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{
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va_list ap;
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char buf[LOG_BUF_SIZE];
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va_start(ap, fmt);
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vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
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va_end(ap);
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return __android_log_buf_write(bufID, prio, tag, buf);
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}
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void __android_log_assert(const char *cond, const char *tag,
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const char *fmt, ...)
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{
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va_list ap;
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char buf[LOG_BUF_SIZE];
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va_start(ap, fmt);
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vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
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va_end(ap);
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__android_log_write(ANDROID_LOG_FATAL, tag, buf);
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__builtin_trap(); /* trap so we have a chance to debug the situation */
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}
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int __android_log_bwrite(int32_t tag, const void *payload, size_t len)
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{
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struct iovec vec[2];
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vec[0].iov_base = &tag;
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vec[0].iov_len = sizeof(tag);
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vec[1].iov_base = (void*)payload;
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vec[1].iov_len = len;
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return write_to_log(LOG_ID_EVENTS, vec, 2);
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}
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/*
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* Like __android_log_bwrite, but takes the type as well. Doesn't work
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* for the general case where we're generating lists of stuff, but very
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* handy if we just want to dump an integer into the log.
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*/
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int __android_log_btwrite(int32_t tag, char type, const void *payload,
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size_t len)
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{
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struct iovec vec[3];
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vec[0].iov_base = &tag;
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vec[0].iov_len = sizeof(tag);
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vec[1].iov_base = &type;
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vec[1].iov_len = sizeof(type);
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vec[2].iov_base = (void*)payload;
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vec[2].iov_len = len;
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return write_to_log(LOG_ID_EVENTS, vec, 3);
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}
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