0167d4c382
USB configfs doesn't use /s/c/a/a/enable. Trying to set that gives confusing message on screen when sideloading. Bug: 37713851 Test: adb sideload on device using with configfs. Test: adb sideload on marlin. Change-Id: Ifa55f90c2a5fe6bf9e7cee95882de9f6de686d73
143 lines
4.3 KiB
C++
143 lines
4.3 KiB
C++
/*
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* Copyright (C) 2012 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 "adb_install.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <signal.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <android-base/file.h>
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#include <android-base/logging.h>
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#include <android-base/properties.h>
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#include <android-base/unique_fd.h>
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#include "common.h"
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#include "fuse_sideload.h"
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#include "install.h"
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#include "ui.h"
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static void set_usb_driver(bool enabled) {
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// USB configfs doesn't use /s/c/a/a/enable.
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if (android::base::GetBoolProperty("sys.usb.configfs", false)) {
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return;
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}
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static constexpr const char* USB_DRIVER_CONTROL = "/sys/class/android_usb/android0/enable";
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android::base::unique_fd fd(open(USB_DRIVER_CONTROL, O_WRONLY));
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if (fd == -1) {
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PLOG(ERROR) << "Failed to open driver control";
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return;
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}
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// Not using android::base::WriteStringToFile since that will open with O_CREAT and give EPERM
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// when USB_DRIVER_CONTROL doesn't exist. When it gives EPERM, we don't know whether that's due
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// to non-existent USB_DRIVER_CONTROL or indeed a permission issue.
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if (!android::base::WriteStringToFd(enabled ? "1" : "0", fd)) {
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PLOG(ERROR) << "Failed to set driver control";
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}
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}
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static void stop_adbd() {
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ui->Print("Stopping adbd...\n");
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android::base::SetProperty("ctl.stop", "adbd");
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set_usb_driver(false);
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}
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static void maybe_restart_adbd() {
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if (is_ro_debuggable()) {
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ui->Print("Restarting adbd...\n");
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set_usb_driver(true);
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android::base::SetProperty("ctl.start", "adbd");
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}
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}
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int apply_from_adb(bool* wipe_cache, const char* install_file) {
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modified_flash = true;
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stop_adbd();
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set_usb_driver(true);
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ui->Print(
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"\n\nNow send the package you want to apply\n"
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"to the device with \"adb sideload <filename>\"...\n");
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pid_t child;
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if ((child = fork()) == 0) {
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execl("/sbin/recovery", "recovery", "--adbd", nullptr);
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_exit(EXIT_FAILURE);
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}
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// How long (in seconds) we wait for the host to start sending us a package, before timing out.
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static constexpr int ADB_INSTALL_TIMEOUT = 300;
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// FUSE_SIDELOAD_HOST_PATHNAME will start to exist once the host connects and starts serving a
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// package. Poll for its appearance. (Note that inotify doesn't work with FUSE.)
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int result = INSTALL_ERROR;
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int status;
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bool waited = false;
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for (int i = 0; i < ADB_INSTALL_TIMEOUT; ++i) {
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if (waitpid(child, &status, WNOHANG) != 0) {
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result = INSTALL_ERROR;
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waited = true;
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break;
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}
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struct stat st;
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if (stat(FUSE_SIDELOAD_HOST_PATHNAME, &st) != 0) {
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if (errno == ENOENT && i < ADB_INSTALL_TIMEOUT - 1) {
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sleep(1);
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continue;
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} else {
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ui->Print("\nTimed out waiting for package.\n\n");
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result = INSTALL_ERROR;
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kill(child, SIGKILL);
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break;
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}
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}
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result = install_package(FUSE_SIDELOAD_HOST_PATHNAME, wipe_cache, install_file, false, 0);
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break;
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}
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if (!waited) {
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// Calling stat() on this magic filename signals the minadbd subprocess to shut down.
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struct stat st;
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stat(FUSE_SIDELOAD_HOST_EXIT_PATHNAME, &st);
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// TODO: there should be a way to cancel waiting for a package (by pushing some button combo on
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// the device). For now you just have to 'adb sideload' a file that's not a valid package, like
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// "/dev/null".
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waitpid(child, &status, 0);
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}
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if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
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if (WEXITSTATUS(status) == 3) {
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ui->Print("\nYou need adb 1.0.32 or newer to sideload\nto this device.\n\n");
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} else if (!WIFSIGNALED(status)) {
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ui->Print("\n(adbd status %d)\n", WEXITSTATUS(status));
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}
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}
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set_usb_driver(false);
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maybe_restart_adbd();
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return result;
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}
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