7101b2e285
And a few trival fixes to suppress warnings.
Change-Id: Id28e3581aaca4bda59826afa80c0c1cdfb0442fc
(cherry picked from commit 80e46e08de)
144 lines
4.1 KiB
C++
144 lines
4.1 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 <unistd.h>
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#include <dirent.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <sys/stat.h>
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#include <signal.h>
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#include <fcntl.h>
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#include "ui.h"
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#include "cutils/properties.h"
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#include "install.h"
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#include "common.h"
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#include "adb_install.h"
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#include "minadbd/fuse_adb_provider.h"
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#include "fuse_sideload.h"
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static RecoveryUI* ui = NULL;
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static void
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set_usb_driver(bool enabled) {
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int fd = open("/sys/class/android_usb/android0/enable", O_WRONLY);
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if (fd < 0) {
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ui->Print("failed to open driver control: %s\n", strerror(errno));
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return;
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}
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if (TEMP_FAILURE_RETRY(write(fd, enabled ? "1" : "0", 1)) == -1) {
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ui->Print("failed to set driver control: %s\n", strerror(errno));
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}
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if (close(fd) < 0) {
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ui->Print("failed to close driver control: %s\n", strerror(errno));
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}
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}
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static void
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stop_adbd() {
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property_set("ctl.stop", "adbd");
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set_usb_driver(false);
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}
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static void
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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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property_set("ctl.start", "adbd");
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}
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}
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// How long (in seconds) we wait for the host to start sending us a
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// package, before timing out.
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#define ADB_INSTALL_TIMEOUT 300
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int
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apply_from_adb(RecoveryUI* ui_, bool* wipe_cache, const char* install_file) {
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modified_flash = true;
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ui = ui_;
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stop_adbd();
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set_usb_driver(true);
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ui->Print("\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", NULL);
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_exit(-1);
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}
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// FUSE_SIDELOAD_HOST_PATHNAME will start to exist once the host
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// connects and starts serving a package. Poll for its
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// 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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struct stat st;
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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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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);
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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
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// subprocess to shut down.
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stat(FUSE_SIDELOAD_HOST_EXIT_PATHNAME, &st);
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// TODO(dougz): there should be a way to cancel waiting for a
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// package (by pushing some button combo on the device). For now
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// you just have to 'adb sideload' a file that's not a valid
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// package, like "/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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