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2.0.21
plugins/android-boot/fu-android-boot-device.c
397 строк
12 KB
Richard Hughes
trivial: Enforce lowercase single line comments
31 окт 2025, 15:32
31 окт 2025, 15:32
e1f08ef
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/* * Copyright 2022 Dylan Van Assche <me@dylanvanassche.be> * * SPDX-License-Identifier: LGPL-2.1-or-later */ #include "config.h" #include <fcntl.h> #include <string.h> #include "fu-android-boot-device.h" #define ANDROID_BOOT_UNKNOWN_VERSION "0.0.0" #define ANDROID_BOOT_SECTOR_SIZE 512 struct _FuAndroidBootDevice { FuBlockPartition parent_instance; gchar *boot_slot; guint64 max_size; }; G_DEFINE_TYPE(FuAndroidBootDevice, fu_android_boot_device, FU_TYPE_BLOCK_PARTITION) static void fu_android_boot_device_to_string(FuDevice *device, guint idt, GString *str) { FuAndroidBootDevice *self = FU_ANDROID_BOOT_DEVICE(device); fwupd_codec_string_append(str, idt, "BootSlot", self->boot_slot); fwupd_codec_string_append_hex(str, idt, "MaxSize", self->max_size); } static gboolean fu_android_boot_device_probe(FuDevice *device, GError **error) { FuAndroidBootDevice *self = FU_ANDROID_BOOT_DEVICE(device); guint64 sectors = 0; guint64 size = 0; g_autofree gchar *prop_size = NULL; g_autoptr(GHashTable) cmdline = NULL; /* FuUdevDevice->probe */ if (!FU_DEVICE_CLASS(fu_android_boot_device_parent_class)->probe(device, error)) return FALSE; /* get kernel cmdline */ cmdline = fu_kernel_get_cmdline(error); if (cmdline == NULL) return FALSE; /* set the physical ID */ if (!fu_udev_device_set_physical_id(FU_UDEV_DEVICE(device), "block", error)) return FALSE; /* extract boot slot if available */ self->boot_slot = g_strdup(g_hash_table_lookup(cmdline, "androidboot.slot_suffix")); /* set max firmware size, required to avoid writing firmware bigger than partition */ prop_size = fu_udev_device_read_sysfs(FU_UDEV_DEVICE(device), "size", FU_UDEV_DEVICE_ATTR_READ_TIMEOUT_DEFAULT, NULL); if (prop_size == NULL) { g_set_error_literal(error, FWUPD_ERROR, FWUPD_ERROR_NOT_SUPPORTED, "device does not expose its size"); return FALSE; } if (!fu_strtoull(prop_size, §ors, 0x0, G_MAXUINT64, FU_INTEGER_BASE_AUTO, error)) return FALSE; size = sectors * ANDROID_BOOT_SECTOR_SIZE; self->max_size = size; /* extract serial number and set it */ fu_device_set_serial(device, g_hash_table_lookup(cmdline, "androidboot.serialno")); /* set the firmware maximum size based on partition size or from quirk */ fu_device_set_firmware_size_max(device, self->max_size); return TRUE; } static gboolean fu_android_boot_device_setup(FuDevice *device, GError **error) { FuAndroidBootDevice *self = FU_ANDROID_BOOT_DEVICE(device); const gchar *fs_label; /* FuBlockPartition->setup() */ if (!FU_DEVICE_CLASS(fu_android_boot_device_parent_class)->setup(device, error)) return FALSE; /* extract label and check if it matches boot slot */ fs_label = fu_block_partition_get_fs_label(FU_BLOCK_PARTITION(self)); if (fs_label != NULL) { fu_device_set_name(device, fs_label); /* if device has A/B partitioning, compare slot to only expose partitions in-use */ if (self->boot_slot != NULL && !g_str_has_suffix(fs_label, self->boot_slot)) { g_set_error_literal(error, FWUPD_ERROR, FWUPD_ERROR_NOT_SUPPORTED, "device is on a different bootslot"); return FALSE; } } /* * Some devices don't have unique TYPE UUIDs, add the partition label to make them truly * unique Devices have a fixed partition scheme anyway because they originally have Android * which has such requirements. */ if (fu_block_partition_get_fs_uuid(FU_BLOCK_PARTITION(self)) == NULL) { g_set_error_literal(error, FWUPD_ERROR, FWUPD_ERROR_NOT_SUPPORTED, "no partition UUID"); return FALSE; } fu_device_add_instance_strsafe(device, "UUID", fu_block_partition_get_fs_uuid(FU_BLOCK_PARTITION(self))); fu_device_add_instance_strsafe(device, "LABEL", fs_label); fu_device_add_instance_strsafe(device, "SLOT", self->boot_slot); /* GUID based on UUID / UUID, label / UUID, label, slot */ if (!fu_device_build_instance_id(device, error, "DRIVE", "UUID", NULL)) return FALSE; fu_device_build_instance_id(device, NULL, "DRIVE", "UUID", "LABEL", NULL); fu_device_build_instance_id(device, NULL, "DRIVE", "UUID", "LABEL", "SLOT", NULL); /* quirks will have matched now */ if (!fu_device_has_flag(device, FWUPD_DEVICE_FLAG_UPDATABLE)) { g_set_error_literal(error, FWUPD_ERROR, FWUPD_ERROR_NOT_SUPPORTED, "device is not updatable"); return FALSE; } /* success */ return TRUE; } static gboolean fu_android_boot_device_open(FuDevice *device, GError **error) { g_autoptr(GError) error_local = NULL; /* FuUdevDevice->open */ if (!FU_DEVICE_CLASS(fu_android_boot_device_parent_class)->open(device, &error_local)) { if (g_error_matches(error_local, FWUPD_ERROR, FWUPD_ERROR_PERMISSION_DENIED)) { g_set_error_literal(error, FWUPD_ERROR, FWUPD_ERROR_NOT_SUPPORTED, error_local->message); return FALSE; } g_propagate_error(error, g_steal_pointer(&error_local)); return FALSE; } return TRUE; } static gboolean fu_android_boot_device_write(FuAndroidBootDevice *self, FuChunkArray *chunks, FuProgress *progress, GError **error) { fu_progress_set_id(progress, G_STRLOC); fu_progress_set_steps(progress, fu_chunk_array_length(chunks)); /* rewind */ if (!fu_udev_device_seek(FU_UDEV_DEVICE(self), 0x0, error)) { g_prefix_error_literal(error, "failed to rewind: "); return FALSE; } /* write each chunk */ for (guint i = 0; i < fu_chunk_array_length(chunks); i++) { g_autoptr(FuChunk) chk = NULL; /* prepare chunk */ chk = fu_chunk_array_index(chunks, i, error); if (chk == NULL) return FALSE; if (!fu_udev_device_pwrite(FU_UDEV_DEVICE(self), fu_chunk_get_address(chk), fu_chunk_get_data(chk), fu_chunk_get_data_sz(chk), error)) { g_prefix_error(error, "failed to write @0x%x: ", (guint)fu_chunk_get_address(chk)); return FALSE; } fu_progress_step_done(progress); } return TRUE; } static gboolean fu_android_boot_device_erase(FuAndroidBootDevice *self, FuProgress *progress, GError **error) { g_autoptr(FuChunkArray) chunks = NULL; gsize bufsz = fu_device_get_firmware_size_max(FU_DEVICE(self)); g_autofree guint8 *buf = g_malloc0(bufsz); g_autoptr(GBytes) fw = g_bytes_new_take(g_steal_pointer(&buf), bufsz); chunks = fu_chunk_array_new_from_bytes(fw, FU_CHUNK_ADDR_OFFSET_NONE, FU_CHUNK_PAGESZ_NONE, 10 * 1024); return fu_android_boot_device_write(self, chunks, progress, error); } static gboolean fu_android_boot_device_verify(FuAndroidBootDevice *self, FuChunkArray *chunks, FuProgress *progress, GError **error) { fu_progress_set_id(progress, G_STRLOC); fu_progress_set_steps(progress, fu_chunk_array_length(chunks)); /* verify each chunk */ for (guint i = 0; i < fu_chunk_array_length(chunks); i++) { g_autofree guint8 *buf = NULL; g_autoptr(FuChunk) chk = NULL; g_autoptr(GBytes) blob1 = NULL; g_autoptr(GBytes) blob2 = NULL; /* prepare chunk */ chk = fu_chunk_array_index(chunks, i, error); if (chk == NULL) return FALSE; buf = g_malloc0(fu_chunk_get_data_sz(chk)); if (!fu_udev_device_pread(FU_UDEV_DEVICE(self), fu_chunk_get_address(chk), buf, fu_chunk_get_data_sz(chk), error)) { g_prefix_error(error, "failed to read @0x%x: ", (guint)fu_chunk_get_address(chk)); return FALSE; } blob1 = fu_chunk_get_bytes(chk); blob2 = g_bytes_new_static(buf, fu_chunk_get_data_sz(chk)); if (!fu_bytes_compare(blob1, blob2, error)) { g_prefix_error(error, "failed to verify @0x%x: ", (guint)fu_chunk_get_address(chk)); return FALSE; } fu_progress_step_done(progress); } return TRUE; } static gboolean fu_android_boot_device_write_firmware(FuDevice *device, FuFirmware *firmware, FuProgress *progress, FwupdInstallFlags flags, GError **error) { FuAndroidBootDevice *self = FU_ANDROID_BOOT_DEVICE(device); g_autoptr(GInputStream) stream = NULL; g_autoptr(FuChunkArray) chunks = NULL; /* get data to write */ stream = fu_firmware_get_stream(firmware, error); if (stream == NULL) return FALSE; chunks = fu_chunk_array_new_from_stream(stream, FU_CHUNK_ADDR_OFFSET_NONE, FU_CHUNK_PAGESZ_NONE, 10 * 1024, error); if (chunks == NULL) return FALSE; fu_progress_set_id(progress, G_STRLOC); fu_progress_add_step(progress, FWUPD_STATUS_DEVICE_ERASE, 72, NULL); fu_progress_add_step(progress, FWUPD_STATUS_DEVICE_WRITE, 20, NULL); fu_progress_add_step(progress, FWUPD_STATUS_DEVICE_VERIFY, 7, NULL); /* erase, write, verify */ if (!fu_android_boot_device_erase(self, fu_progress_get_child(progress), error)) return FALSE; fu_progress_step_done(progress); if (!fu_android_boot_device_write(self, chunks, fu_progress_get_child(progress), error)) return FALSE; fu_progress_step_done(progress); if (!fu_android_boot_device_verify(self, chunks, fu_progress_get_child(progress), error)) return FALSE; fu_progress_step_done(progress); return TRUE; } static gboolean fu_android_boot_device_set_quirk_kv(FuDevice *device, const gchar *key, const gchar *value, GError **error) { FuAndroidBootDevice *self = FU_ANDROID_BOOT_DEVICE(device); /* load from quirks */ if (g_strcmp0(key, "AndroidBootVersionProperty") == 0) { g_autoptr(GHashTable) cmdline = NULL; const gchar *version = NULL; cmdline = fu_kernel_get_cmdline(error); if (cmdline == NULL) return FALSE; version = g_hash_table_lookup(cmdline, value); if (version != NULL) fu_device_set_version(device, version); return TRUE; } if (g_strcmp0(key, "AndroidBootPartitionMaxSize") == 0) { guint64 size = 0; if (!fu_strtoull(value, &size, 0, G_MAXUINT32, FU_INTEGER_BASE_AUTO, error)) return FALSE; self->max_size = size; return TRUE; } /* failed */ g_set_error_literal(error, FWUPD_ERROR, FWUPD_ERROR_NOT_SUPPORTED, "quirk key not supported"); return FALSE; } static void fu_android_boot_device_finalize(GObject *obj) { FuAndroidBootDevice *self = FU_ANDROID_BOOT_DEVICE(obj); G_OBJECT_CLASS(fu_android_boot_device_parent_class)->finalize(obj); g_free(self->boot_slot); } static void fu_android_boot_device_init(FuAndroidBootDevice *self) { fu_device_set_summary(FU_DEVICE(self), "Android Bootloader"); fu_device_add_protocol(FU_DEVICE(self), "com.google.android_boot"); fu_device_set_version_format(FU_DEVICE(self), FWUPD_VERSION_FORMAT_PLAIN); fu_device_add_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_REQUIRE_AC); fu_device_add_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_INTERNAL); fu_device_add_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_NEEDS_REBOOT); fu_device_add_flag(FU_DEVICE(self), FWUPD_DEVICE_FLAG_CAN_VERIFY_IMAGE); fu_udev_device_add_open_flag(FU_UDEV_DEVICE(self), FU_IO_CHANNEL_OPEN_FLAG_READ); fu_udev_device_add_open_flag(FU_UDEV_DEVICE(self), FU_IO_CHANNEL_OPEN_FLAG_WRITE); fu_udev_device_add_open_flag(FU_UDEV_DEVICE(self), FU_IO_CHANNEL_OPEN_FLAG_SYNC); fu_device_add_icon(FU_DEVICE(self), FU_DEVICE_ICON_COMPUTER); /* * Fallback for ABL without version reporting, fwupd will always provide an upgrade in this * case. Once upgraded, the version reporting will be available and the update notification * will disappear. If version reporting is available, the reported version is set. */ fu_device_set_version(FU_DEVICE(self), ANDROID_BOOT_UNKNOWN_VERSION); fu_device_set_version_format(FU_DEVICE(self), FWUPD_VERSION_FORMAT_TRIPLET); } static void fu_android_boot_device_class_init(FuAndroidBootDeviceClass *klass) { FuDeviceClass *device_class = FU_DEVICE_CLASS(klass); GObjectClass *object_class = G_OBJECT_CLASS(klass); object_class->finalize = fu_android_boot_device_finalize; device_class->probe = fu_android_boot_device_probe; device_class->setup = fu_android_boot_device_setup; device_class->open = fu_android_boot_device_open; device_class->write_firmware = fu_android_boot_device_write_firmware; device_class->to_string = fu_android_boot_device_to_string; device_class->set_quirk_kv = fu_android_boot_device_set_quirk_kv; }