151 lines
3.7 KiB
C
151 lines
3.7 KiB
C
/*
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* Copyright (C) 2013 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 <pthread.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include "debug.h"
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#include "protocol.h"
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#include "transport.h"
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#define COMMAND_BUF_SIZE 64
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ssize_t transport_handle_write(struct transport_handle *thandle, char *buffer, size_t len)
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{
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return thandle->transport->write(thandle, buffer, len);
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}
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void transport_handle_close(struct transport_handle *thandle)
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{
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thandle->transport->close(thandle);
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}
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int transport_handle_download(struct transport_handle *thandle, size_t len)
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{
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ssize_t ret;
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size_t n = 0;
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int fd;
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// TODO: move out of /dev
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char tempname[] = "/dev/fastboot_download_XXXXXX";
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char *buffer;
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fd = mkstemp(tempname);
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if (fd < 0)
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return -1;
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unlink(tempname);
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ftruncate(fd, len);
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buffer = mmap(NULL, len, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
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if (buffer == MAP_FAILED) {
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D(ERR, "mmap(%zu) failed: %d %s", len, errno, strerror(errno));
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goto err;
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}
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while (n < len) {
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ret = thandle->transport->read(thandle, buffer + n, len - n);
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if (ret <= 0) {
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D(WARN, "transport read failed, ret=%zd %s", ret, strerror(-ret));
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break;
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}
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n += ret;
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}
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munmap(buffer, len);
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if (n != len)
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goto err;
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return fd;
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err:
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close(fd);
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transport_handle_close(thandle);
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return -1;
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}
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static void *transport_data_thread(void *arg)
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{
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struct transport_handle *thandle = arg;
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struct protocol_handle *phandle = create_protocol_handle(thandle);
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while (!thandle->stopped) {
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int ret;
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char buffer[COMMAND_BUF_SIZE + 1];
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D(VERBOSE, "transport_data_thread\n");
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ret = thandle->transport->read(thandle, buffer, COMMAND_BUF_SIZE);
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if (ret <= 0) {
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D(DEBUG, "ret = %d\n", ret);
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break;
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}
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if (ret > 0) {
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buffer[ret] = 0;
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//TODO: multiple threads
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protocol_handle_command(phandle, buffer);
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}
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}
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transport_handle_close(thandle);
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free(thandle);
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return NULL;
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}
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static void *transport_connect_thread(void *arg)
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{
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struct transport *transport = arg;
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while (!transport->stopped) {
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struct transport_handle *thandle;
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pthread_t thread;
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pthread_attr_t attr;
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D(VERBOSE, "transport_connect_thread\n");
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thandle = transport->connect(transport);
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if (thandle == NULL) {
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D(ERR, "transport connect failed\n");
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sleep(1);
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continue;
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}
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thandle->transport = transport;
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pthread_attr_init(&attr);
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pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
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pthread_create(&thread, &attr, transport_data_thread, thandle);
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sleep(1);
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}
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return NULL;
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}
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void transport_register(struct transport *transport)
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{
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pthread_t thread;
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pthread_attr_t attr;
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pthread_attr_init(&attr);
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pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
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pthread_create(&thread, &attr, transport_connect_thread, transport);
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}
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