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-rw-r--r--bootloader.cpp235
1 files changed, 0 insertions, 235 deletions
diff --git a/bootloader.cpp b/bootloader.cpp
deleted file mode 100644
index f6c0e9341..000000000
--- a/bootloader.cpp
+++ /dev/null
@@ -1,235 +0,0 @@
-/*
- * Copyright (C) 2008 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include <fs_mgr.h>
-
-#include <android-base/file.h>
-
-#include "bootloader.h"
-#include "common.h"
-#include "mtdutils/mtdutils.h"
-#include "roots.h"
-#include "unique_fd.h"
-
-static int get_bootloader_message_mtd(bootloader_message* out, const Volume* v);
-static int set_bootloader_message_mtd(const bootloader_message* in, const Volume* v);
-static bool read_misc_partition(const Volume* v, size_t offset, size_t size, std::string* out);
-static bool write_misc_partition(const Volume* v, size_t offset, const std::string& in);
-
-int get_bootloader_message(bootloader_message* out) {
- Volume* v = volume_for_path("/misc");
- if (v == nullptr) {
- LOGE("Cannot load volume /misc!\n");
- return -1;
- }
- if (strcmp(v->fs_type, "mtd") == 0) {
- return get_bootloader_message_mtd(out, v);
- } else if (strcmp(v->fs_type, "emmc") == 0) {
- std::string s;
- if (!read_misc_partition(v, BOOTLOADER_MESSAGE_OFFSET_IN_MISC, sizeof(bootloader_message),
- &s)) {
- return -1;
- }
- memcpy(out, s.data(), s.size());
- return 0;
- }
- LOGE("Unknown misc partition fs_type \"%s\"\n", v->fs_type);
- return -1;
-}
-
-bool read_wipe_package(size_t size, std::string* out) {
- Volume* v = volume_for_path("/misc");
- if (v == nullptr) {
- LOGE("Cannot load volume /misc!\n");
- return false;
- }
- if (strcmp(v->fs_type, "mtd") == 0) {
- LOGE("Read wipe package on mtd is not supported.\n");
- return false;
- } else if (strcmp(v->fs_type, "emmc") == 0) {
- return read_misc_partition(v, WIPE_PACKAGE_OFFSET_IN_MISC, size, out);
- }
- LOGE("Unknown misc partition fs_type \"%s\"\n", v->fs_type);
- return false;
-}
-
-int set_bootloader_message(const bootloader_message* in) {
- Volume* v = volume_for_path("/misc");
- if (v == nullptr) {
- LOGE("Cannot load volume /misc!\n");
- return -1;
- }
- if (strcmp(v->fs_type, "mtd") == 0) {
- return set_bootloader_message_mtd(in, v);
- } else if (strcmp(v->fs_type, "emmc") == 0) {
- std::string s(reinterpret_cast<const char*>(in), sizeof(*in));
- bool success = write_misc_partition(v, BOOTLOADER_MESSAGE_OFFSET_IN_MISC, s);
- return success ? 0 : -1;
- }
- LOGE("Unknown misc partition fs_type \"%s\"\n", v->fs_type);
- return -1;
-}
-
-// ------------------------------
-// for misc partitions on MTD
-// ------------------------------
-
-static const int MISC_PAGES = 3; // number of pages to save
-static const int MISC_COMMAND_PAGE = 1; // bootloader command is this page
-
-static int get_bootloader_message_mtd(bootloader_message* out,
- const Volume* v) {
- size_t write_size;
- mtd_scan_partitions();
- const MtdPartition* part = mtd_find_partition_by_name(v->blk_device);
- if (part == nullptr || mtd_partition_info(part, nullptr, nullptr, &write_size)) {
- LOGE("failed to find \"%s\"\n", v->blk_device);
- return -1;
- }
-
- MtdReadContext* read = mtd_read_partition(part);
- if (read == nullptr) {
- LOGE("failed to open \"%s\": %s\n", v->blk_device, strerror(errno));
- return -1;
- }
-
- const ssize_t size = write_size * MISC_PAGES;
- char data[size];
- ssize_t r = mtd_read_data(read, data, size);
- if (r != size) LOGE("failed to read \"%s\": %s\n", v->blk_device, strerror(errno));
- mtd_read_close(read);
- if (r != size) return -1;
-
- memcpy(out, &data[write_size * MISC_COMMAND_PAGE], sizeof(*out));
- return 0;
-}
-static int set_bootloader_message_mtd(const bootloader_message* in,
- const Volume* v) {
- size_t write_size;
- mtd_scan_partitions();
- const MtdPartition* part = mtd_find_partition_by_name(v->blk_device);
- if (part == nullptr || mtd_partition_info(part, nullptr, nullptr, &write_size)) {
- LOGE("failed to find \"%s\"\n", v->blk_device);
- return -1;
- }
-
- MtdReadContext* read = mtd_read_partition(part);
- if (read == nullptr) {
- LOGE("failed to open \"%s\": %s\n", v->blk_device, strerror(errno));
- return -1;
- }
-
- ssize_t size = write_size * MISC_PAGES;
- char data[size];
- ssize_t r = mtd_read_data(read, data, size);
- if (r != size) LOGE("failed to read \"%s\": %s\n", v->blk_device, strerror(errno));
- mtd_read_close(read);
- if (r != size) return -1;
-
- memcpy(&data[write_size * MISC_COMMAND_PAGE], in, sizeof(*in));
-
- MtdWriteContext* write = mtd_write_partition(part);
- if (write == nullptr) {
- LOGE("failed to open \"%s\": %s\n", v->blk_device, strerror(errno));
- return -1;
- }
- if (mtd_write_data(write, data, size) != size) {
- LOGE("failed to write \"%s\": %s\n", v->blk_device, strerror(errno));
- mtd_write_close(write);
- return -1;
- }
- if (mtd_write_close(write)) {
- LOGE("failed to finish \"%s\": %s\n", v->blk_device, strerror(errno));
- return -1;
- }
-
- LOGI("Set boot command \"%s\"\n", in->command[0] != 255 ? in->command : "");
- return 0;
-}
-
-
-// ------------------------------------
-// for misc partitions on block devices
-// ------------------------------------
-
-static void wait_for_device(const char* fn) {
- int tries = 0;
- int ret;
- do {
- ++tries;
- struct stat buf;
- ret = stat(fn, &buf);
- if (ret == -1) {
- printf("failed to stat \"%s\" try %d: %s\n", fn, tries, strerror(errno));
- sleep(1);
- }
- } while (ret && tries < 10);
-
- if (ret) {
- printf("failed to stat \"%s\"\n", fn);
- }
-}
-
-static bool read_misc_partition(const Volume* v, size_t offset, size_t size, std::string* out) {
- wait_for_device(v->blk_device);
- unique_fd fd(open(v->blk_device, O_RDONLY));
- if (fd.get() == -1) {
- LOGE("Failed to open \"%s\": %s\n", v->blk_device, strerror(errno));
- return false;
- }
- if (lseek(fd.get(), static_cast<off_t>(offset), SEEK_SET) != static_cast<off_t>(offset)) {
- LOGE("Failed to lseek \"%s\": %s\n", v->blk_device, strerror(errno));
- return false;
- }
- out->resize(size);
- if (!android::base::ReadFully(fd.get(), &(*out)[0], size)) {
- LOGE("Failed to read \"%s\": %s\n", v->blk_device, strerror(errno));
- return false;
- }
- return true;
-}
-
-static bool write_misc_partition(const Volume* v, size_t offset, const std::string& in) {
- wait_for_device(v->blk_device);
- unique_fd fd(open(v->blk_device, O_WRONLY | O_SYNC));
- if (fd.get() == -1) {
- LOGE("Failed to open \"%s\": %s\n", v->blk_device, strerror(errno));
- return false;
- }
- if (lseek(fd.get(), static_cast<off_t>(offset), SEEK_SET) != static_cast<off_t>(offset)) {
- LOGE("Failed to lseek \"%s\": %s\n", v->blk_device, strerror(errno));
- return false;
- }
- if (!android::base::WriteFully(fd.get(), in.data(), in.size())) {
- LOGE("Failed to write \"%s\": %s\n", v->blk_device, strerror(errno));
- return false;
- }
-
- if (fsync(fd.get()) == -1) {
- LOGE("Failed to fsync \"%s\": %s\n", v->blk_device, strerror(errno));
- return false;
- }
- return true;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-03 09:46:32 +0200