ab52c181fa
Also say *which* device wasn't found. Bug: http://b/20666660 Change-Id: I50e234ad89e39ae0a8995083c0b642c61275c5a3
123 lines
3.2 KiB
C++
123 lines
3.2 KiB
C++
/*
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* Copyright (C) 2015 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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#define TRACE_TAG TRACE_RWX
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#include "adb_io.h"
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#include <unistd.h>
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#include <base/stringprintf.h>
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#include "adb_trace.h"
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#include "adb_utils.h"
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#include "sysdeps.h"
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bool SendProtocolString(int fd, const std::string& s) {
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int length = s.size();
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if (length > 0xffff) {
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length = 0xffff;
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}
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return WriteFdFmt(fd, "%04x", length) && WriteFdExactly(fd, s);
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}
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bool SendOkay(int fd) {
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return WriteFdExactly(fd, "OKAY", 4);
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}
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bool SendFail(int fd, const std::string& reason) {
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return WriteFdExactly(fd, "FAIL", 4) && SendProtocolString(fd, reason);
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}
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bool ReadFdExactly(int fd, void* buf, size_t len) {
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char* p = reinterpret_cast<char*>(buf);
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size_t len0 = len;
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D("readx: fd=%d wanted=%zu\n", fd, len);
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while (len > 0) {
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int r = adb_read(fd, p, len);
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if (r > 0) {
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len -= r;
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p += r;
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} else if (r == -1) {
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D("readx: fd=%d error %d: %s\n", fd, errno, strerror(errno));
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return false;
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} else {
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D("readx: fd=%d disconnected\n", fd);
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errno = 0;
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return false;
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}
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}
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D("readx: fd=%d wanted=%zu got=%zu\n", fd, len0, len0 - len);
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if (ADB_TRACING) {
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dump_hex(reinterpret_cast<const unsigned char*>(buf), len0);
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}
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return true;
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}
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bool WriteFdExactly(int fd, const void* buf, size_t len) {
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const char* p = reinterpret_cast<const char*>(buf);
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int r;
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D("writex: fd=%d len=%d: ", fd, (int)len);
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if (ADB_TRACING) {
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dump_hex(reinterpret_cast<const unsigned char*>(buf), len);
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}
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while (len > 0) {
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r = adb_write(fd, p, len);
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if (r == -1) {
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D("writex: fd=%d error %d: %s\n", fd, errno, strerror(errno));
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if (errno == EAGAIN) {
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adb_sleep_ms(1); // just yield some cpu time
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continue;
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} else if (errno == EPIPE) {
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D("writex: fd=%d disconnected\n", fd);
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errno = 0;
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return false;
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} else {
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return false;
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}
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} else {
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len -= r;
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p += r;
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}
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}
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return true;
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}
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bool WriteFdExactly(int fd, const char* str) {
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return WriteFdExactly(fd, str, strlen(str));
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}
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bool WriteFdExactly(int fd, const std::string& str) {
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return WriteFdExactly(fd, str.c_str(), str.size());
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}
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bool WriteFdFmt(int fd, const char* fmt, ...) {
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std::string str;
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va_list ap;
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va_start(ap, fmt);
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android::base::StringAppendV(&str, fmt, ap);
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va_end(ap);
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return WriteFdExactly(fd, str);
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}
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