From 63a319201fc0f5c34c1c62b446527e06f57f8d40 Mon Sep 17 00:00:00 2001 From: Elliott Hughes Date: Thu, 9 Jun 2016 17:41:22 -0700 Subject: Remove obsolete MTD support. Bug: http://b/29250988 Change-Id: Ia97ba9082a165c37f74d6e1c3f71a367adc59945 --- Android.mk | 22 +- applypatch/Android.mk | 2 - applypatch/applypatch.cpp | 308 +++++++++---------------- applypatch/main.cpp | 8 +- bootloader.cpp | 89 +------- install.cpp | 2 - mounts.cpp | 89 ++++++++ mounts.h | 32 +++ mtdutils/Android.mk | 20 -- mtdutils/flash_image.c | 143 ------------ mtdutils/mounts.c | 161 ------------- mtdutils/mounts.h | 41 ---- mtdutils/mtdutils.c | 561 ---------------------------------------------- mtdutils/mtdutils.h | 62 ----- roots.cpp | 67 ++---- updater/Android.mk | 5 +- updater/install.cpp | 168 +------------- 17 files changed, 266 insertions(+), 1514 deletions(-) create mode 100644 mounts.cpp create mode 100644 mounts.h delete mode 100644 mtdutils/Android.mk delete mode 100644 mtdutils/flash_image.c delete mode 100644 mtdutils/mounts.c delete mode 100644 mtdutils/mounts.h delete mode 100644 mtdutils/mtdutils.c delete mode 100644 mtdutils/mtdutils.h diff --git a/Android.mk b/Android.mk index 95e806ff9..384eefe3f 100644 --- a/Android.mk +++ b/Android.mk @@ -17,15 +17,23 @@ LOCAL_PATH := $(call my-dir) # libfusesideload (static library) # =============================== include $(CLEAR_VARS) - LOCAL_SRC_FILES := fuse_sideload.cpp LOCAL_CLANG := true -LOCAL_CFLAGS := -O2 -g -DADB_HOST=0 -Wall -Wno-unused-parameter +LOCAL_CFLAGS := -O2 -g -DADB_HOST=0 -Wall -Wno-unused-parameter -Werror LOCAL_CFLAGS += -D_XOPEN_SOURCE -D_GNU_SOURCE LOCAL_MODULE := libfusesideload LOCAL_STATIC_LIBRARIES := libcutils libc libcrypto_static include $(BUILD_STATIC_LIBRARY) +# libmounts (static library) +# =============================== +include $(CLEAR_VARS) +LOCAL_SRC_FILES := mounts.cpp +LOCAL_CLANG := true +LOCAL_CFLAGS := -Wall -Wno-unused-parameter -Werror +LOCAL_MODULE := libmounts +include $(BUILD_STATIC_LIBRARY) + # recovery (static executable) # =============================== include $(CLEAR_VARS) @@ -70,8 +78,8 @@ LOCAL_STATIC_LIBRARIES := \ libext4_utils_static \ libsparse_static \ libminzip \ + libmounts \ libz \ - libmtdutils \ libminadbd \ libfusesideload \ libminui \ @@ -89,11 +97,8 @@ LOCAL_STATIC_LIBRARIES := \ LOCAL_HAL_STATIC_LIBRARIES := libhealthd -ifeq ($(TARGET_USERIMAGES_USE_EXT4), true) - LOCAL_CFLAGS += -DUSE_EXT4 - LOCAL_C_INCLUDES += system/extras/ext4_utils - LOCAL_STATIC_LIBRARIES += libext4_utils_static libz -endif +LOCAL_C_INCLUDES += system/extras/ext4_utils +LOCAL_STATIC_LIBRARIES += libext4_utils_static libz LOCAL_MODULE_PATH := $(TARGET_RECOVERY_ROOT_OUT)/sbin @@ -145,7 +150,6 @@ include $(BUILD_STATIC_LIBRARY) include $(LOCAL_PATH)/minui/Android.mk \ $(LOCAL_PATH)/minzip/Android.mk \ $(LOCAL_PATH)/minadbd/Android.mk \ - $(LOCAL_PATH)/mtdutils/Android.mk \ $(LOCAL_PATH)/tests/Android.mk \ $(LOCAL_PATH)/tools/Android.mk \ $(LOCAL_PATH)/edify/Android.mk \ diff --git a/applypatch/Android.mk b/applypatch/Android.mk index a15ac0280..48efe340e 100644 --- a/applypatch/Android.mk +++ b/applypatch/Android.mk @@ -32,7 +32,6 @@ LOCAL_C_INCLUDES += \ LOCAL_EXPORT_C_INCLUDE_DIRS := $(LOCAL_PATH)/include LOCAL_STATIC_LIBRARIES += \ libotafault \ - libmtdutils \ libbase \ libcrypto_static \ libbz \ @@ -79,7 +78,6 @@ LOCAL_STATIC_LIBRARIES += \ libedify \ libotafault \ libminzip \ - libmtdutils \ libcrypto_static \ libbz LOCAL_SHARED_LIBRARIES += libz libcutils libc diff --git a/applypatch/applypatch.cpp b/applypatch/applypatch.cpp index 270fde5c4..02a3c6e41 100644 --- a/applypatch/applypatch.cpp +++ b/applypatch/applypatch.cpp @@ -32,7 +32,6 @@ #include "openssl/sha.h" #include "applypatch/applypatch.h" -#include "mtdutils/mtdutils.h" #include "edify/expr.h" #include "ota_io.h" #include "print_sha1.h" @@ -49,17 +48,14 @@ static int GenerateTarget(FileContents* source_file, size_t target_size, const Value* bonus_data); -static bool mtd_partitions_scanned = false; - // Read a file into memory; store the file contents and associated // metadata in *file. // // Return 0 on success. int LoadFileContents(const char* filename, FileContents* file) { - // A special 'filename' beginning with "MTD:" or "EMMC:" means to + // A special 'filename' beginning with "EMMC:" means to // load the contents of a partition. - if (strncmp(filename, "MTD:", 4) == 0 || - strncmp(filename, "EMMC:", 5) == 0) { + if (strncmp(filename, "EMMC:", 5) == 0) { return LoadPartitionContents(filename, file); } @@ -87,10 +83,9 @@ int LoadFileContents(const char* filename, FileContents* file) { return 0; } -// Load the contents of an MTD or EMMC partition into the provided +// Load the contents of an EMMC partition into the provided // FileContents. filename should be a string of the form -// "MTD::::::..." (or -// "EMMC::..."). The smallest size_n bytes for +// "EMMC::...". The smallest size_n bytes for // which that prefix of the partition contents has the corresponding // sha1 hash will be loaded. It is acceptable for a size value to be // repeated with different sha1s. Will return 0 on success. @@ -102,8 +97,6 @@ int LoadFileContents(const char* filename, FileContents* file) { // "end-of-file" marker), so the caller must specify the possible // lengths and the hash of the data, and we'll do the load expecting // to find one of those hashes. -enum PartitionType { MTD, EMMC }; - static int LoadPartitionContents(const char* filename, FileContents* file) { std::string copy(filename); std::vector pieces = android::base::Split(copy, ":"); @@ -112,12 +105,7 @@ static int LoadPartitionContents(const char* filename, FileContents* file) { return -1; } - enum PartitionType type; - if (pieces[0] == "MTD") { - type = MTD; - } else if (pieces[0] == "EMMC") { - type = EMMC; - } else { + if (pieces[0] != "EMMC") { printf("LoadPartitionContents called with bad filename (%s)\n", filename); return -1; } @@ -145,36 +133,10 @@ static int LoadPartitionContents(const char* filename, FileContents* file) { } ); - MtdReadContext* ctx = NULL; - FILE* dev = NULL; - - switch (type) { - case MTD: { - if (!mtd_partitions_scanned) { - mtd_scan_partitions(); - mtd_partitions_scanned = true; - } - - const MtdPartition* mtd = mtd_find_partition_by_name(partition); - if (mtd == NULL) { - printf("mtd partition \"%s\" not found (loading %s)\n", partition, filename); - return -1; - } - - ctx = mtd_read_partition(mtd); - if (ctx == NULL) { - printf("failed to initialize read of mtd partition \"%s\"\n", partition); - return -1; - } - break; - } - - case EMMC: - dev = ota_fopen(partition, "rb"); - if (dev == NULL) { - printf("failed to open emmc partition \"%s\": %s\n", partition, strerror(errno)); - return -1; - } + FILE* dev = ota_fopen(partition, "rb"); + if (dev == NULL) { + printf("failed to open emmc partition \"%s\": %s\n", partition, strerror(errno)); + return -1; } SHA_CTX sha_ctx; @@ -192,16 +154,7 @@ static int LoadPartitionContents(const char* filename, FileContents* file) { // we're trying the possibilities in order of increasing size). size_t next = size[index[i]] - data_size; if (next > 0) { - size_t read = 0; - switch (type) { - case MTD: - read = mtd_read_data(ctx, p, next); - break; - - case EMMC: - read = ota_fread(p, 1, next, dev); - break; - } + size_t read = ota_fread(p, 1, next, dev); if (next != read) { printf("short read (%zu bytes of %zu) for partition \"%s\"\n", read, next, partition); @@ -234,16 +187,7 @@ static int LoadPartitionContents(const char* filename, FileContents* file) { } } - switch (type) { - case MTD: - mtd_read_close(ctx); - break; - - case EMMC: - ota_fclose(dev); - break; - } - + ota_fclose(dev); if (!found) { // Ran off the end of the list of (size,sha1) pairs without finding a match. @@ -302,7 +246,7 @@ int SaveFileContents(const char* filename, const FileContents* file) { } // Write a memory buffer to 'target' partition, a string of the form -// "MTD:[:...]" or "EMMC:[:...]". The target name +// "EMMC:[:...]". The target name // might contain multiple colons, but WriteToPartition() only uses the first // two and ignores the rest. Return 0 on success. int WriteToPartition(const unsigned char* data, size_t len, const char* target) { @@ -314,165 +258,117 @@ int WriteToPartition(const unsigned char* data, size_t len, const char* target) return -1; } - enum PartitionType type; - if (pieces[0] == "MTD") { - type = MTD; - } else if (pieces[0] == "EMMC") { - type = EMMC; - } else { + if (pieces[0] != "EMMC") { printf("WriteToPartition called with bad target (%s)\n", target); return -1; } const char* partition = pieces[1].c_str(); - switch (type) { - case MTD: { - if (!mtd_partitions_scanned) { - mtd_scan_partitions(); - mtd_partitions_scanned = true; - } - - const MtdPartition* mtd = mtd_find_partition_by_name(partition); - if (mtd == NULL) { - printf("mtd partition \"%s\" not found for writing\n", partition); - return -1; - } - - MtdWriteContext* ctx = mtd_write_partition(mtd); - if (ctx == NULL) { - printf("failed to init mtd partition \"%s\" for writing\n", partition); - return -1; - } + size_t start = 0; + bool success = false; + int fd = ota_open(partition, O_RDWR | O_SYNC); + if (fd < 0) { + printf("failed to open %s: %s\n", partition, strerror(errno)); + return -1; + } - size_t written = mtd_write_data(ctx, reinterpret_cast(data), len); - if (written != len) { - printf("only wrote %zu of %zu bytes to MTD %s\n", written, len, partition); - mtd_write_close(ctx); - return -1; - } + for (size_t attempt = 0; attempt < 2; ++attempt) { + if (TEMP_FAILURE_RETRY(lseek(fd, start, SEEK_SET)) == -1) { + printf("failed seek on %s: %s\n", partition, strerror(errno)); + return -1; + } + while (start < len) { + size_t to_write = len - start; + if (to_write > 1<<20) to_write = 1<<20; - if (mtd_erase_blocks(ctx, -1) < 0) { - printf("error finishing mtd write of %s\n", partition); - mtd_write_close(ctx); + ssize_t written = TEMP_FAILURE_RETRY(ota_write(fd, data+start, to_write)); + if (written == -1) { + printf("failed write writing to %s: %s\n", partition, strerror(errno)); return -1; } + start += written; + } + if (ota_fsync(fd) != 0) { + printf("failed to sync to %s (%s)\n", partition, strerror(errno)); + return -1; + } + if (ota_close(fd) != 0) { + printf("failed to close %s (%s)\n", partition, strerror(errno)); + return -1; + } + fd = ota_open(partition, O_RDONLY); + if (fd < 0) { + printf("failed to reopen %s for verify (%s)\n", partition, strerror(errno)); + return -1; + } - if (mtd_write_close(ctx)) { - printf("error closing mtd write of %s\n", partition); - return -1; - } - break; + // Drop caches so our subsequent verification read + // won't just be reading the cache. + sync(); + int dc = ota_open("/proc/sys/vm/drop_caches", O_WRONLY); + if (TEMP_FAILURE_RETRY(ota_write(dc, "3\n", 2)) == -1) { + printf("write to /proc/sys/vm/drop_caches failed: %s\n", strerror(errno)); + } else { + printf(" caches dropped\n"); } + ota_close(dc); + sleep(1); - case EMMC: { - size_t start = 0; - bool success = false; - int fd = ota_open(partition, O_RDWR | O_SYNC); - if (fd < 0) { - printf("failed to open %s: %s\n", partition, strerror(errno)); - return -1; + // verify + if (TEMP_FAILURE_RETRY(lseek(fd, 0, SEEK_SET)) == -1) { + printf("failed to seek back to beginning of %s: %s\n", + partition, strerror(errno)); + return -1; + } + unsigned char buffer[4096]; + start = len; + for (size_t p = 0; p < len; p += sizeof(buffer)) { + size_t to_read = len - p; + if (to_read > sizeof(buffer)) { + to_read = sizeof(buffer); } - for (size_t attempt = 0; attempt < 2; ++attempt) { - if (TEMP_FAILURE_RETRY(lseek(fd, start, SEEK_SET)) == -1) { - printf("failed seek on %s: %s\n", partition, strerror(errno)); + size_t so_far = 0; + while (so_far < to_read) { + ssize_t read_count = + TEMP_FAILURE_RETRY(ota_read(fd, buffer+so_far, to_read-so_far)); + if (read_count == -1) { + printf("verify read error %s at %zu: %s\n", + partition, p, strerror(errno)); return -1; } - while (start < len) { - size_t to_write = len - start; - if (to_write > 1<<20) to_write = 1<<20; - - ssize_t written = TEMP_FAILURE_RETRY(ota_write(fd, data+start, to_write)); - if (written == -1) { - printf("failed write writing to %s: %s\n", partition, strerror(errno)); - return -1; - } - start += written; - } - if (ota_fsync(fd) != 0) { - printf("failed to sync to %s (%s)\n", partition, strerror(errno)); - return -1; - } - if (ota_close(fd) != 0) { - printf("failed to close %s (%s)\n", partition, strerror(errno)); - return -1; - } - fd = ota_open(partition, O_RDONLY); - if (fd < 0) { - printf("failed to reopen %s for verify (%s)\n", partition, strerror(errno)); - return -1; - } - - // Drop caches so our subsequent verification read - // won't just be reading the cache. - sync(); - int dc = ota_open("/proc/sys/vm/drop_caches", O_WRONLY); - if (TEMP_FAILURE_RETRY(ota_write(dc, "3\n", 2)) == -1) { - printf("write to /proc/sys/vm/drop_caches failed: %s\n", strerror(errno)); - } else { - printf(" caches dropped\n"); - } - ota_close(dc); - sleep(1); - - // verify - if (TEMP_FAILURE_RETRY(lseek(fd, 0, SEEK_SET)) == -1) { - printf("failed to seek back to beginning of %s: %s\n", - partition, strerror(errno)); - return -1; - } - unsigned char buffer[4096]; - start = len; - for (size_t p = 0; p < len; p += sizeof(buffer)) { - size_t to_read = len - p; - if (to_read > sizeof(buffer)) { - to_read = sizeof(buffer); - } - - size_t so_far = 0; - while (so_far < to_read) { - ssize_t read_count = - TEMP_FAILURE_RETRY(ota_read(fd, buffer+so_far, to_read-so_far)); - if (read_count == -1) { - printf("verify read error %s at %zu: %s\n", - partition, p, strerror(errno)); - return -1; - } - if (static_cast(read_count) < to_read) { - printf("short verify read %s at %zu: %zd %zu %s\n", - partition, p, read_count, to_read, strerror(errno)); - } - so_far += read_count; - } - - if (memcmp(buffer, data+p, to_read) != 0) { - printf("verification failed starting at %zu\n", p); - start = p; - break; - } - } - - if (start == len) { - printf("verification read succeeded (attempt %zu)\n", attempt+1); - success = true; - break; + if (static_cast(read_count) < to_read) { + printf("short verify read %s at %zu: %zd %zu %s\n", + partition, p, read_count, to_read, strerror(errno)); } + so_far += read_count; } - if (!success) { - printf("failed to verify after all attempts\n"); - return -1; + if (memcmp(buffer, data+p, to_read) != 0) { + printf("verification failed starting at %zu\n", p); + start = p; + break; } + } - if (ota_close(fd) != 0) { - printf("error closing %s (%s)\n", partition, strerror(errno)); - return -1; - } - sync(); + if (start == len) { + printf("verification read succeeded (attempt %zu)\n", attempt+1); + success = true; break; } } + if (!success) { + printf("failed to verify after all attempts\n"); + return -1; + } + + if (ota_close(fd) != 0) { + printf("error closing %s (%s)\n", partition, strerror(errno)); + return -1; + } + sync(); + return 0; } @@ -729,7 +625,7 @@ int applypatch_flash(const char* source_filename, const char* target_filename, std::string target_str(target_filename); std::vector pieces = android::base::Split(target_str, ":"); - if (pieces.size() != 2 || (pieces[0] != "MTD" && pieces[0] != "EMMC")) { + if (pieces.size() != 2 || pieces[0] != "EMMC") { printf("invalid target name \"%s\"", target_filename); return 1; } @@ -778,8 +674,7 @@ static int GenerateTarget(FileContents* source_file, FileContents* source_to_use; int made_copy = 0; - bool target_is_partition = (strncmp(target_filename, "MTD:", 4) == 0 || - strncmp(target_filename, "EMMC:", 5) == 0); + bool target_is_partition = (strncmp(target_filename, "EMMC:", 5) == 0); const std::string tmp_target_filename = std::string(target_filename) + ".patch"; // assume that target_filename (eg "/system/app/Foo.apk") is located @@ -860,8 +755,7 @@ static int GenerateTarget(FileContents* source_file, // copy the source file to cache, then delete it from the original // location. - if (strncmp(source_filename, "MTD:", 4) == 0 || - strncmp(source_filename, "EMMC:", 5) == 0) { + if (strncmp(source_filename, "EMMC:", 5) == 0) { // It's impossible to free space on the target filesystem by // deleting the source if the source is a partition. If // we're ever in a state where we need to do this, fail. diff --git a/applypatch/main.cpp b/applypatch/main.cpp index 0ff8cbf9a..1968ae48f 100644 --- a/applypatch/main.cpp +++ b/applypatch/main.cpp @@ -160,9 +160,9 @@ static int PatchMode(int argc, char** argv) { // - otherwise, or if any error is encountered, exits with non-zero // status. // -// (or in check mode) may refer to an MTD partition +// (or in check mode) may refer to an EMMC partition // to read the source data. See the comments for the -// LoadMTDContents() function above for the format of such a filename. +// LoadPartitionContents() function for the format of such a filename. int main(int argc, char** argv) { if (argc < 2) { @@ -175,8 +175,8 @@ int main(int argc, char** argv) { " or %s -l\n" "\n" "Filenames may be of the form\n" - " MTD::::::...\n" - "to specify reading from or writing to an MTD partition.\n\n", + " EMMC::::::...\n" + "to specify reading from or writing to an EMMC partition.\n\n", argv[0], argv[0], argv[0], argv[0]); return 2; } diff --git a/bootloader.cpp b/bootloader.cpp index a32f8b4c6..783f56ea8 100644 --- a/bootloader.cpp +++ b/bootloader.cpp @@ -27,12 +27,9 @@ #include "bootloader.h" #include "common.h" -#include "mtdutils/mtdutils.h" #include "roots.h" #include -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 int get_bootloader_message_block(bootloader_message* out, const Volume* v); static int set_bootloader_message_block(const bootloader_message* in, const Volume* v); @@ -42,9 +39,7 @@ int get_bootloader_message(bootloader_message* out) { 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) { + if (strcmp(v->fs_type, "emmc") == 0) { return get_bootloader_message_block(out, v); } LOGE("unknown misc partition fs_type \"%s\"\n", v->fs_type); @@ -57,93 +52,13 @@ int set_bootloader_message(const bootloader_message* in) { 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) { + if (strcmp(v->fs_type, "emmc") == 0) { return set_bootloader_message_block(in, v); } 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 // ------------------------------------ diff --git a/install.cpp b/install.cpp index a7b59c3e7..9106db595 100644 --- a/install.cpp +++ b/install.cpp @@ -30,8 +30,6 @@ #include "minui/minui.h" #include "minzip/SysUtil.h" #include "minzip/Zip.h" -#include "mtdutils/mounts.h" -#include "mtdutils/mtdutils.h" #include "roots.h" #include "ui.h" #include "verifier.h" diff --git a/mounts.cpp b/mounts.cpp new file mode 100644 index 000000000..f23376b06 --- /dev/null +++ b/mounts.cpp @@ -0,0 +1,89 @@ +/* + * Copyright (C) 2007 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 "mounts.h" + +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +struct MountedVolume { + std::string device; + std::string mount_point; + std::string filesystem; + std::string flags; +}; + +std::vector g_mounts_state; + +bool scan_mounted_volumes() { + for (size_t i = 0; i < g_mounts_state.size(); ++i) { + delete g_mounts_state[i]; + } + g_mounts_state.clear(); + + // Open and read mount table entries. + FILE* fp = setmntent("/proc/mounts", "re"); + if (fp == NULL) { + return false; + } + mntent* e; + while ((e = getmntent(fp)) != NULL) { + MountedVolume* v = new MountedVolume; + v->device = e->mnt_fsname; + v->mount_point = e->mnt_dir; + v->filesystem = e->mnt_type; + v->flags = e->mnt_opts; + g_mounts_state.push_back(v); + } + endmntent(fp); + return true; +} + +MountedVolume* find_mounted_volume_by_device(const char* device) { + for (size_t i = 0; i < g_mounts_state.size(); ++i) { + if (g_mounts_state[i]->device == device) return g_mounts_state[i]; + } + return nullptr; +} + +MountedVolume* find_mounted_volume_by_mount_point(const char* mount_point) { + for (size_t i = 0; i < g_mounts_state.size(); ++i) { + if (g_mounts_state[i]->mount_point == mount_point) return g_mounts_state[i]; + } + return nullptr; +} + +int unmount_mounted_volume(MountedVolume* volume) { + // Intentionally pass the empty string to umount if the caller tries + // to unmount a volume they already unmounted using this + // function. + std::string mount_point = volume->mount_point; + volume->mount_point.clear(); + return umount(mount_point.c_str()); +} + +int remount_read_only(MountedVolume* volume) { + return mount(volume->device.c_str(), volume->mount_point.c_str(), volume->filesystem.c_str(), + MS_NOATIME | MS_NODEV | MS_NODIRATIME | MS_RDONLY | MS_REMOUNT, 0); +} diff --git a/mounts.h b/mounts.h new file mode 100644 index 000000000..1b7670329 --- /dev/null +++ b/mounts.h @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2007 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. + */ + +#ifndef MOUNTS_H_ +#define MOUNTS_H_ + +struct MountedVolume; + +bool scan_mounted_volumes(); + +MountedVolume* find_mounted_volume_by_device(const char* device); + +MountedVolume* find_mounted_volume_by_mount_point(const char* mount_point); + +int unmount_mounted_volume(MountedVolume* volume); + +int remount_read_only(MountedVolume* volume); + +#endif diff --git a/mtdutils/Android.mk b/mtdutils/Android.mk deleted file mode 100644 index b7d35c27a..000000000 --- a/mtdutils/Android.mk +++ /dev/null @@ -1,20 +0,0 @@ -LOCAL_PATH := $(call my-dir) -include $(CLEAR_VARS) - -LOCAL_SRC_FILES := \ - mtdutils.c \ - mounts.c - -LOCAL_MODULE := libmtdutils -LOCAL_CLANG := true - -include $(BUILD_STATIC_LIBRARY) - -include $(CLEAR_VARS) -LOCAL_CLANG := true -LOCAL_SRC_FILES := flash_image.c -LOCAL_MODULE := flash_image -LOCAL_MODULE_TAGS := eng -LOCAL_STATIC_LIBRARIES := libmtdutils -LOCAL_SHARED_LIBRARIES := libcutils liblog libc -include $(BUILD_EXECUTABLE) diff --git a/mtdutils/flash_image.c b/mtdutils/flash_image.c deleted file mode 100644 index 36ffa1314..000000000 --- a/mtdutils/flash_image.c +++ /dev/null @@ -1,143 +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 -#include -#include -#include -#include -#include - -#include "cutils/log.h" -#include "mtdutils.h" - -#ifdef LOG_TAG -#undef LOG_TAG -#endif -#define LOG_TAG "flash_image" - -#define HEADER_SIZE 2048 // size of header to compare for equality - -void die(const char *msg, ...) { - int err = errno; - va_list args; - va_start(args, msg); - char buf[1024]; - vsnprintf(buf, sizeof(buf), msg, args); - va_end(args); - - if (err != 0) { - strlcat(buf, ": ", sizeof(buf)); - strlcat(buf, strerror(err), sizeof(buf)); - } - - fprintf(stderr, "%s\n", buf); - ALOGE("%s\n", buf); - exit(1); -} - -/* Read an image file and write it to a flash partition. */ - -int main(int argc, char **argv) { - const MtdPartition *ptn; - MtdWriteContext *write; - void *data; - unsigned sz; - - if (argc != 3) { - fprintf(stderr, "usage: %s partition file.img\n", argv[0]); - return 2; - } - - if (mtd_scan_partitions() <= 0) die("error scanning partitions"); - const MtdPartition *partition = mtd_find_partition_by_name(argv[1]); - if (partition == NULL) die("can't find %s partition", argv[1]); - - // If the first part of the file matches the partition, skip writing - - int fd = open(argv[2], O_RDONLY); - if (fd < 0) die("error opening %s", argv[2]); - - char header[HEADER_SIZE]; - int headerlen = TEMP_FAILURE_RETRY(read(fd, header, sizeof(header))); - if (headerlen <= 0) die("error reading %s header", argv[2]); - - MtdReadContext *in = mtd_read_partition(partition); - if (in == NULL) { - ALOGW("error opening %s: %s\n", argv[1], strerror(errno)); - // just assume it needs re-writing - } else { - char check[HEADER_SIZE]; - int checklen = mtd_read_data(in, check, sizeof(check)); - if (checklen <= 0) { - ALOGW("error reading %s: %s\n", argv[1], strerror(errno)); - // just assume it needs re-writing - } else if (checklen == headerlen && !memcmp(header, check, headerlen)) { - ALOGI("header is the same, not flashing %s\n", argv[1]); - return 0; - } - mtd_read_close(in); - } - - // Skip the header (we'll come back to it), write everything else - ALOGI("flashing %s from %s\n", argv[1], argv[2]); - - MtdWriteContext *out = mtd_write_partition(partition); - if (out == NULL) die("error writing %s", argv[1]); - - char buf[HEADER_SIZE]; - memset(buf, 0, headerlen); - int wrote = mtd_write_data(out, buf, headerlen); - if (wrote != headerlen) die("error writing %s", argv[1]); - - int len; - while ((len = TEMP_FAILURE_RETRY(read(fd, buf, sizeof(buf)))) > 0) { - wrote = mtd_write_data(out, buf, len); - if (wrote != len) die("error writing %s", argv[1]); - } - if (len < 0) die("error reading %s", argv[2]); - - if (mtd_write_close(out)) die("error closing %s", argv[1]); - - // Now come back and write the header last - - out = mtd_write_partition(partition); - if (out == NULL) die("error re-opening %s", argv[1]); - - wrote = mtd_write_data(out, header, headerlen); - if (wrote != headerlen) die("error re-writing %s", argv[1]); - - // Need to write a complete block, so write the rest of the first block - size_t block_size; - if (mtd_partition_info(partition, NULL, &block_size, NULL)) - die("error getting %s block size", argv[1]); - - if (TEMP_FAILURE_RETRY(lseek(fd, headerlen, SEEK_SET)) != headerlen) - die("error rewinding %s", argv[2]); - - int left = block_size - headerlen; - while (left < 0) left += block_size; - while (left > 0) { - len = TEMP_FAILURE_RETRY(read(fd, buf, left > (int)sizeof(buf) ? (int)sizeof(buf) : left)); - if (len <= 0) die("error reading %s", argv[2]); - if (mtd_write_data(out, buf, len) != len) - die("error writing %s", argv[1]); - left -= len; - } - - if (mtd_write_close(out)) die("error closing %s", argv[1]); - return 0; -} diff --git a/mtdutils/mounts.c b/mtdutils/mounts.c deleted file mode 100644 index 6a9b03d30..000000000 --- a/mtdutils/mounts.c +++ /dev/null @@ -1,161 +0,0 @@ -/* - * Copyright (C) 2007 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 -#include -#include -#include -#include -#include -#include - -#include "mounts.h" - -struct MountedVolume { - const char *device; - const char *mount_point; - const char *filesystem; - const char *flags; -}; - -typedef struct { - MountedVolume *volumes; - int volumes_allocd; - int volume_count; -} MountsState; - -static MountsState g_mounts_state = { - NULL, // volumes - 0, // volumes_allocd - 0 // volume_count -}; - -static inline void -free_volume_internals(const MountedVolume *volume, int zero) -{ - free((char *)volume->device); - free((char *)volume->mount_point); - free((char *)volume->filesystem); - free((char *)volume->flags); - if (zero) { - memset((void *)volume, 0, sizeof(*volume)); - } -} - -#define PROC_MOUNTS_FILENAME "/proc/mounts" - -int -scan_mounted_volumes() -{ - FILE* fp; - struct mntent* mentry; - - if (g_mounts_state.volumes == NULL) { - const int numv = 32; - MountedVolume *volumes = malloc(numv * sizeof(*volumes)); - if (volumes == NULL) { - errno = ENOMEM; - return -1; - } - g_mounts_state.volumes = volumes; - g_mounts_state.volumes_allocd = numv; - memset(volumes, 0, numv * sizeof(*volumes)); - } else { - /* Free the old volume strings. - */ - int i; - for (i = 0; i < g_mounts_state.volume_count; i++) { - free_volume_internals(&g_mounts_state.volumes[i], 1); - } - } - g_mounts_state.volume_count = 0; - - /* Open and read mount table entries. */ - fp = setmntent(PROC_MOUNTS_FILENAME, "r"); - if (fp == NULL) { - return -1; - } - while ((mentry = getmntent(fp)) != NULL) { - MountedVolume* v = &g_mounts_state.volumes[g_mounts_state.volume_count++]; - v->device = strdup(mentry->mnt_fsname); - v->mount_point = strdup(mentry->mnt_dir); - v->filesystem = strdup(mentry->mnt_type); - v->flags = strdup(mentry->mnt_opts); - } - endmntent(fp); - return 0; -} - -const MountedVolume * -find_mounted_volume_by_device(const char *device) -{ - if (g_mounts_state.volumes != NULL) { - int i; - for (i = 0; i < g_mounts_state.volume_count; i++) { - MountedVolume *v = &g_mounts_state.volumes[i]; - /* May be null if it was unmounted and we haven't rescanned. - */ - if (v->device != NULL) { - if (strcmp(v->device, device) == 0) { - return v; - } - } - } - } - return NULL; -} - -const MountedVolume * -find_mounted_volume_by_mount_point(const char *mount_point) -{ - if (g_mounts_state.volumes != NULL) { - int i; - for (i = 0; i < g_mounts_state.volume_count; i++) { - MountedVolume *v = &g_mounts_state.volumes[i]; - /* May be null if it was unmounted and we haven't rescanned. - */ - if (v->mount_point != NULL) { - if (strcmp(v->mount_point, mount_point) == 0) { - return v; - } - } - } - } - return NULL; -} - -int -unmount_mounted_volume(const MountedVolume *volume) -{ - /* Intentionally pass NULL to umount if the caller tries - * to unmount a volume they already unmounted using this - * function. - */ - int ret = umount(volume->mount_point); - if (ret == 0) { - free_volume_internals(volume, 1); - return 0; - } - return ret; -} - -int -remount_read_only(const MountedVolume* volume) -{ - return mount(volume->device, volume->mount_point, volume->filesystem, - MS_NOATIME | MS_NODEV | MS_NODIRATIME | - MS_RDONLY | MS_REMOUNT, 0); -} diff --git a/mtdutils/mounts.h b/mtdutils/mounts.h deleted file mode 100644 index d721355b8..000000000 --- a/mtdutils/mounts.h +++ /dev/null @@ -1,41 +0,0 @@ -/* - * Copyright (C) 2007 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. - */ - -#ifndef MTDUTILS_MOUNTS_H_ -#define MTDUTILS_MOUNTS_H_ - -#ifdef __cplusplus -extern "C" { -#endif - -typedef struct MountedVolume MountedVolume; - -int scan_mounted_volumes(void); - -const MountedVolume *find_mounted_volume_by_device(const char *device); - -const MountedVolume * -find_mounted_volume_by_mount_point(const char *mount_point); - -int unmount_mounted_volume(const MountedVolume *volume); - -int remount_read_only(const MountedVolume* volume); - -#ifdef __cplusplus -} -#endif - -#endif // MTDUTILS_MOUNTS_H_ diff --git a/mtdutils/mtdutils.c b/mtdutils/mtdutils.c deleted file mode 100644 index cd4f52cd5..000000000 --- a/mtdutils/mtdutils.c +++ /dev/null @@ -1,561 +0,0 @@ -/* - * Copyright (C) 2007 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 -#include -#include -#include -#include -#include -#include // for _IOW, _IOR, mount() -#include -#include -#undef NDEBUG -#include - -#include "mtdutils.h" - -struct MtdPartition { - int device_index; - unsigned int size; - unsigned int erase_size; - char *name; -}; - -struct MtdReadContext { - const MtdPartition *partition; - char *buffer; - size_t consumed; - int fd; -}; - -struct MtdWriteContext { - const MtdPartition *partition; - char *buffer; - size_t stored; - int fd; - - off_t* bad_block_offsets; - int bad_block_alloc; - int bad_block_count; -}; - -typedef struct { - MtdPartition *partitions; - int partitions_allocd; - int partition_count; -} MtdState; - -static MtdState g_mtd_state = { - NULL, // partitions - 0, // partitions_allocd - -1 // partition_count -}; - -#define MTD_PROC_FILENAME "/proc/mtd" - -int -mtd_scan_partitions() -{ - char buf[2048]; - const char *bufp; - int fd; - int i; - ssize_t nbytes; - - if (g_mtd_state.partitions == NULL) { - const int nump = 32; - MtdPartition *partitions = malloc(nump * sizeof(*partitions)); - if (partitions == NULL) { - errno = ENOMEM; - return -1; - } - g_mtd_state.partitions = partitions; - g_mtd_state.partitions_allocd = nump; - memset(partitions, 0, nump * sizeof(*partitions)); - } - g_mtd_state.partition_count = 0; - - /* Initialize all of the entries to make things easier later. - * (Lets us handle sparsely-numbered partitions, which - * may not even be possible.) - */ - for (i = 0; i < g_mtd_state.partitions_allocd; i++) { - MtdPartition *p = &g_mtd_state.partitions[i]; - if (p->name != NULL) { - free(p->name); - p->name = NULL; - } - p->device_index = -1; - } - - /* Open and read the file contents. - */ - fd = open(MTD_PROC_FILENAME, O_RDONLY); - if (fd < 0) { - goto bail; - } - nbytes = TEMP_FAILURE_RETRY(read(fd, buf, sizeof(buf) - 1)); - close(fd); - if (nbytes < 0) { - goto bail; - } - buf[nbytes] = '\0'; - - /* Parse the contents of the file, which looks like: - * - * # cat /proc/mtd - * dev: size erasesize name - * mtd0: 00080000 00020000 "bootloader" - * mtd1: 00400000 00020000 "mfg_and_gsm" - * mtd2: 00400000 00020000 "0000000c" - * mtd3: 00200000 00020000 "0000000d" - * mtd4: 04000000 00020000 "system" - * mtd5: 03280000 00020000 "userdata" - */ - bufp = buf; - while (nbytes > 0) { - int mtdnum, mtdsize, mtderasesize; - int matches; - char mtdname[64]; - mtdname[0] = '\0'; - mtdnum = -1; - - matches = sscanf(bufp, "mtd%d: %x %x \"%63[^\"]", - &mtdnum, &mtdsize, &mtderasesize, mtdname); - /* This will fail on the first line, which just contains - * column headers. - */ - if (matches == 4) { - MtdPartition *p = &g_mtd_state.partitions[mtdnum]; - p->device_index = mtdnum; - p->size = mtdsize; - p->erase_size = mtderasesize; - p->name = strdup(mtdname); - if (p->name == NULL) { - errno = ENOMEM; - goto bail; - } - g_mtd_state.partition_count++; - } - - /* Eat the line. - */ - while (nbytes > 0 && *bufp != '\n') { - bufp++; - nbytes--; - } - if (nbytes > 0) { - bufp++; - nbytes--; - } - } - - return g_mtd_state.partition_count; - -bail: - // keep "partitions" around so we can free the names on a rescan. - g_mtd_state.partition_count = -1; - return -1; -} - -const MtdPartition * -mtd_find_partition_by_name(const char *name) -{ - if (g_mtd_state.partitions != NULL) { - int i; - for (i = 0; i < g_mtd_state.partitions_allocd; i++) { - MtdPartition *p = &g_mtd_state.partitions[i]; - if (p->device_index >= 0 && p->name != NULL) { - if (strcmp(p->name, name) == 0) { - return p; - } - } - } - } - return NULL; -} - -int -mtd_mount_partition(const MtdPartition *partition, const char *mount_point, - const char *filesystem, int read_only) -{ - const unsigned long flags = MS_NOATIME | MS_NODEV | MS_NODIRATIME; - char devname[64]; - int rv = -1; - - sprintf(devname, "/dev/block/mtdblock%d", partition->device_index); - if (!read_only) { - rv = mount(devname, mount_point, filesystem, flags, NULL); - } - if (read_only || rv < 0) { - rv = mount(devname, mount_point, filesystem, flags | MS_RDONLY, 0); - if (rv < 0) { - printf("Failed to mount %s on %s: %s\n", - devname, mount_point, strerror(errno)); - } else { - printf("Mount %s on %s read-only\n", devname, mount_point); - } - } -#if 1 //TODO: figure out why this is happening; remove include of stat.h - if (rv >= 0) { - /* For some reason, the x bits sometimes aren't set on the root - * of mounted volumes. - */ - struct stat st; - rv = stat(mount_point, &st); - if (rv < 0) { - return rv; - } - mode_t new_mode = st.st_mode | S_IXUSR | S_IXGRP | S_IXOTH; - if (new_mode != st.st_mode) { -printf("Fixing execute permissions for %s\n", mount_point); - rv = chmod(mount_point, new_mode); - if (rv < 0) { - printf("Couldn't fix permissions for %s: %s\n", - mount_point, strerror(errno)); - } - } - } -#endif - return rv; -} - -int -mtd_partition_info(const MtdPartition *partition, - size_t *total_size, size_t *erase_size, size_t *write_size) -{ - char mtddevname[32]; - sprintf(mtddevname, "/dev/mtd/mtd%d", partition->device_index); - int fd = open(mtddevname, O_RDONLY); - if (fd < 0) return -1; - - struct mtd_info_user mtd_info; - int ret = ioctl(fd, MEMGETINFO, &mtd_info); - close(fd); - if (ret < 0) return -1; - - if (total_size != NULL) *total_size = mtd_info.size; - if (erase_size != NULL) *erase_size = mtd_info.erasesize; - if (write_size != NULL) *write_size = mtd_info.writesize; - return 0; -} - -MtdReadContext *mtd_read_partition(const MtdPartition *partition) -{ - MtdReadContext *ctx = (MtdReadContext*) malloc(sizeof(MtdReadContext)); - if (ctx == NULL) return NULL; - - ctx->buffer = malloc(partition->erase_size); - if (ctx->buffer == NULL) { - free(ctx); - return NULL; - } - - char mtddevname[32]; - sprintf(mtddevname, "/dev/mtd/mtd%d", partition->device_index); - ctx->fd = open(mtddevname, O_RDONLY); - if (ctx->fd < 0) { - free(ctx->buffer); - free(ctx); - return NULL; - } - - ctx->partition = partition; - ctx->consumed = partition->erase_size; - return ctx; -} - -static int read_block(const MtdPartition *partition, int fd, char *data) -{ - struct mtd_ecc_stats before, after; - if (ioctl(fd, ECCGETSTATS, &before)) { - printf("mtd: ECCGETSTATS error (%s)\n", strerror(errno)); - return -1; - } - - loff_t pos = TEMP_FAILURE_RETRY(lseek64(fd, 0, SEEK_CUR)); - if (pos == -1) { - printf("mtd: read_block: couldn't SEEK_CUR: %s\n", strerror(errno)); - return -1; - } - - ssize_t size = partition->erase_size; - int mgbb; - - while (pos + size <= (int) partition->size) { - if (TEMP_FAILURE_RETRY(lseek64(fd, pos, SEEK_SET)) != pos || - TEMP_FAILURE_RETRY(read(fd, data, size)) != size) { - printf("mtd: read error at 0x%08llx (%s)\n", - (long long)pos, strerror(errno)); - } else if (ioctl(fd, ECCGETSTATS, &after)) { - printf("mtd: ECCGETSTATS error (%s)\n", strerror(errno)); - return -1; - } else if (after.failed != before.failed) { - printf("mtd: ECC errors (%d soft, %d hard) at 0x%08llx\n", - after.corrected - before.corrected, - after.failed - before.failed, (long long)pos); - // copy the comparison baseline for the next read. - memcpy(&before, &after, sizeof(struct mtd_ecc_stats)); - } else if ((mgbb = ioctl(fd, MEMGETBADBLOCK, &pos))) { - fprintf(stderr, - "mtd: MEMGETBADBLOCK returned %d at 0x%08llx: %s\n", - mgbb, (long long)pos, strerror(errno)); - } else { - return 0; // Success! - } - - pos += partition->erase_size; - } - - errno = ENOSPC; - return -1; -} - -ssize_t mtd_read_data(MtdReadContext *ctx, char *data, size_t len) -{ - size_t read = 0; - while (read < len) { - if (ctx->consumed < ctx->partition->erase_size) { - size_t avail = ctx->partition->erase_size - ctx->consumed; - size_t copy = len - read < avail ? len - read : avail; - memcpy(data + read, ctx->buffer + ctx->consumed, copy); - ctx->consumed += copy; - read += copy; - } - - // Read complete blocks directly into the user's buffer - while (ctx->consumed == ctx->partition->erase_size && - len - read >= ctx->partition->erase_size) { - if (read_block(ctx->partition, ctx->fd, data + read)) return -1; - read += ctx->partition->erase_size; - } - - if (read >= len) { - return read; - } - - // Read the next block into the buffer - if (ctx->consumed == ctx->partition->erase_size && read < len) { - if (read_block(ctx->partition, ctx->fd, ctx->buffer)) return -1; - ctx->consumed = 0; - } - } - - return read; -} - -void mtd_read_close(MtdReadContext *ctx) -{ - close(ctx->fd); - free(ctx->buffer); - free(ctx); -} - -MtdWriteContext *mtd_write_partition(const MtdPartition *partition) -{ - MtdWriteContext *ctx = (MtdWriteContext*) malloc(sizeof(MtdWriteContext)); - if (ctx == NULL) return NULL; - - ctx->bad_block_offsets = NULL; - ctx->bad_block_alloc = 0; - ctx->bad_block_count = 0; - - ctx->buffer = malloc(partition->erase_size); - if (ctx->buffer == NULL) { - free(ctx); - return NULL; - } - - char mtddevname[32]; - sprintf(mtddevname, "/dev/mtd/mtd%d", partition->device_index); - ctx->fd = open(mtddevname, O_RDWR); - if (ctx->fd < 0) { - free(ctx->buffer); - free(ctx); - return NULL; - } - - ctx->partition = partition; - ctx->stored = 0; - return ctx; -} - -static void add_bad_block_offset(MtdWriteContext *ctx, off_t pos) { - if (ctx->bad_block_count + 1 > ctx->bad_block_alloc) { - ctx->bad_block_alloc = (ctx->bad_block_alloc*2) + 1; - ctx->bad_block_offsets = realloc(ctx->bad_block_offsets, - ctx->bad_block_alloc * sizeof(off_t)); - } - ctx->bad_block_offsets[ctx->bad_block_count++] = pos; -} - -static int write_block(MtdWriteContext *ctx, const char *data) -{ - const MtdPartition *partition = ctx->partition; - int fd = ctx->fd; - - off_t pos = TEMP_FAILURE_RETRY(lseek(fd, 0, SEEK_CUR)); - if (pos == (off_t) -1) { - printf("mtd: write_block: couldn't SEEK_CUR: %s\n", strerror(errno)); - return -1; - } - - ssize_t size = partition->erase_size; - while (pos + size <= (int) partition->size) { - loff_t bpos = pos; - int ret = ioctl(fd, MEMGETBADBLOCK, &bpos); - if (ret != 0 && !(ret == -1 && errno == EOPNOTSUPP)) { - add_bad_block_offset(ctx, pos); - fprintf(stderr, - "mtd: not writing bad block at 0x%08lx (ret %d): %s\n", - pos, ret, strerror(errno)); - pos += partition->erase_size; - continue; // Don't try to erase known factory-bad blocks. - } - - struct erase_info_user erase_info; - erase_info.start = pos; - erase_info.length = size; - int retry; - for (retry = 0; retry < 2; ++retry) { - if (ioctl(fd, MEMERASE, &erase_info) < 0) { - printf("mtd: erase failure at 0x%08lx (%s)\n", - pos, strerror(errno)); - continue; - } - if (TEMP_FAILURE_RETRY(lseek(fd, pos, SEEK_SET)) != pos || - TEMP_FAILURE_RETRY(write(fd, data, size)) != size) { - printf("mtd: write error at 0x%08lx (%s)\n", - pos, strerror(errno)); - } - - char verify[size]; - if (TEMP_FAILURE_RETRY(lseek(fd, pos, SEEK_SET)) != pos || - TEMP_FAILURE_RETRY(read(fd, verify, size)) != size) { - printf("mtd: re-read error at 0x%08lx (%s)\n", - pos, strerror(errno)); - continue; - } - if (memcmp(data, verify, size) != 0) { - printf("mtd: verification error at 0x%08lx (%s)\n", - pos, strerror(errno)); - continue; - } - - if (retry > 0) { - printf("mtd: wrote block after %d retries\n", retry); - } - printf("mtd: successfully wrote block at %lx\n", pos); - return 0; // Success! - } - - // Try to erase it once more as we give up on this block - add_bad_block_offset(ctx, pos); - printf("mtd: skipping write block at 0x%08lx\n", pos); - ioctl(fd, MEMERASE, &erase_info); - pos += partition->erase_size; - } - - // Ran out of space on the device - errno = ENOSPC; - return -1; -} - -ssize_t mtd_write_data(MtdWriteContext *ctx, const char *data, size_t len) -{ - size_t wrote = 0; - while (wrote < len) { - // Coalesce partial writes into complete blocks - if (ctx->stored > 0 || len - wrote < ctx->partition->erase_size) { - size_t avail = ctx->partition->erase_size - ctx->stored; - size_t copy = len - wrote < avail ? len - wrote : avail; - memcpy(ctx->buffer + ctx->stored, data + wrote, copy); - ctx->stored += copy; - wrote += copy; - } - - // If a complete block was accumulated, write it - if (ctx->stored == ctx->partition->erase_size) { - if (write_block(ctx, ctx->buffer)) return -1; - ctx->stored = 0; - } - - // Write complete blocks directly from the user's buffer - while (ctx->stored == 0 && len - wrote >= ctx->partition->erase_size) { - if (write_block(ctx, data + wrote)) return -1; - wrote += ctx->partition->erase_size; - } - } - - return wrote; -} - -off_t mtd_erase_blocks(MtdWriteContext *ctx, int blocks) -{ - // Zero-pad and write any pending data to get us to a block boundary - if (ctx->stored > 0) { - size_t zero = ctx->partition->erase_size - ctx->stored; - memset(ctx->buffer + ctx->stored, 0, zero); - if (write_block(ctx, ctx->buffer)) return -1; - ctx->stored = 0; - } - - off_t pos = TEMP_FAILURE_RETRY(lseek(ctx->fd, 0, SEEK_CUR)); - if ((off_t) pos == (off_t) -1) { - printf("mtd_erase_blocks: couldn't SEEK_CUR: %s\n", strerror(errno)); - return -1; - } - - const int total = (ctx->partition->size - pos) / ctx->partition->erase_size; - if (blocks < 0) blocks = total; - if (blocks > total) { - errno = ENOSPC; - return -1; - } - - // Erase the specified number of blocks - while (blocks-- > 0) { - loff_t bpos = pos; - if (ioctl(ctx->fd, MEMGETBADBLOCK, &bpos) > 0) { - printf("mtd: not erasing bad block at 0x%08lx\n", pos); - pos += ctx->partition->erase_size; - continue; // Don't try to erase known factory-bad blocks. - } - - struct erase_info_user erase_info; - erase_info.start = pos; - erase_info.length = ctx->partition->erase_size; - if (ioctl(ctx->fd, MEMERASE, &erase_info) < 0) { - printf("mtd: erase failure at 0x%08lx\n", pos); - } - pos += ctx->partition->erase_size; - } - - return pos; -} - -int mtd_write_close(MtdWriteContext *ctx) -{ - int r = 0; - // Make sure any pending data gets written - if (mtd_erase_blocks(ctx, 0) == (off_t) -1) r = -1; - if (close(ctx->fd)) r = -1; - free(ctx->bad_block_offsets); - free(ctx->buffer); - free(ctx); - return r; -} diff --git a/mtdutils/mtdutils.h b/mtdutils/mtdutils.h deleted file mode 100644 index 8059d6a4d..000000000 --- a/mtdutils/mtdutils.h +++ /dev/null @@ -1,62 +0,0 @@ -/* - * Copyright (C) 2007 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. - */ - -#ifndef MTDUTILS_H_ -#define MTDUTILS_H_ - -#include // for size_t, etc. - -#ifdef __cplusplus -extern "C" { -#endif - -typedef struct MtdPartition MtdPartition; - -int mtd_scan_partitions(void); - -const MtdPartition *mtd_find_partition_by_name(const char *name); - -/* mount_point is like "/system" - * filesystem is like "yaffs2" - */ -int mtd_mount_partition(const MtdPartition *partition, const char *mount_point, - const char *filesystem, int read_only); - -/* get the partition and the minimum erase/write block size. NULL is ok. - */ -int mtd_partition_info(const MtdPartition *partition, - size_t *total_size, size_t *erase_size, size_t *write_size); - -/* read or write raw data from a partition, starting at the beginning. - * skips bad blocks as best we can. - */ -typedef struct MtdReadContext MtdReadContext; -typedef struct MtdWriteContext MtdWriteContext; - -MtdReadContext *mtd_read_partition(const MtdPartition *); -ssize_t mtd_read_data(MtdReadContext *, char *data, size_t data_len); -void mtd_read_close(MtdReadContext *); - -MtdWriteContext *mtd_write_partition(const MtdPartition *); -ssize_t mtd_write_data(MtdWriteContext *, const char *data, size_t data_len); -off_t mtd_erase_blocks(MtdWriteContext *, int blocks); /* 0 ok, -1 for all */ -int mtd_write_close(MtdWriteContext *); - -#ifdef __cplusplus -} -#endif - -#endif // MTDUTILS_H_ diff --git a/roots.cpp b/roots.cpp index 12c6b5ee2..b06b9c616 100644 --- a/roots.cpp +++ b/roots.cpp @@ -14,6 +14,8 @@ * limitations under the License. */ +#include "roots.h" + #include #include #include @@ -25,11 +27,9 @@ #include #include -#include "mtdutils/mtdutils.h" -#include "mtdutils/mounts.h" -#include "roots.h" #include "common.h" #include "make_ext4fs.h" +#include "mounts.h" #include "wipe.h" #include "cryptfs.h" @@ -82,9 +82,7 @@ int ensure_path_mounted_at(const char* path, const char* mount_point) { return 0; } - int result; - result = scan_mounted_volumes(); - if (result < 0) { + if (!scan_mounted_volumes()) { LOGE("failed to scan mounted volumes\n"); return -1; } @@ -93,8 +91,7 @@ int ensure_path_mounted_at(const char* path, const char* mount_point) { mount_point = v->mount_point; } - const MountedVolume* mv = - find_mounted_volume_by_mount_point(mount_point); + MountedVolume* mv = find_mounted_volume_by_mount_point(mount_point); if (mv) { // volume is already mounted return 0; @@ -102,26 +99,14 @@ int ensure_path_mounted_at(const char* path, const char* mount_point) { mkdir(mount_point, 0755); // in case it doesn't already exist - if (strcmp(v->fs_type, "yaffs2") == 0) { - // mount an MTD partition as a YAFFS2 filesystem. - mtd_scan_partitions(); - const MtdPartition* partition; - partition = mtd_find_partition_by_name(v->blk_device); - if (partition == NULL) { - LOGE("failed to find \"%s\" partition to mount at \"%s\"\n", - v->blk_device, mount_point); - return -1; - } - return mtd_mount_partition(partition, mount_point, v->fs_type, 0); - } else if (strcmp(v->fs_type, "ext4") == 0 || + if (strcmp(v->fs_type, "ext4") == 0 || strcmp(v->fs_type, "squashfs") == 0 || strcmp(v->fs_type, "vfat") == 0) { - result = mount(v->blk_device, mount_point, v->fs_type, - v->flags, v->fs_options); - if (result == 0) return 0; - - LOGE("failed to mount %s (%s)\n", mount_point, strerror(errno)); - return -1; + if (mount(v->blk_device, mount_point, v->fs_type, v->flags, v->fs_options) == -1) { + LOGE("failed to mount %s (%s)\n", mount_point, strerror(errno)); + return -1; + } + return 0; } LOGE("unknown fs_type \"%s\" for %s\n", v->fs_type, mount_point); @@ -144,15 +129,12 @@ int ensure_path_unmounted(const char* path) { return -1; } - int result; - result = scan_mounted_volumes(); - if (result < 0) { + if (!scan_mounted_volumes()) { LOGE("failed to scan mounted volumes\n"); return -1; } - const MountedVolume* mv = - find_mounted_volume_by_mount_point(v->mount_point); + MountedVolume* mv = find_mounted_volume_by_mount_point(v->mount_point); if (mv == NULL) { // volume is already unmounted return 0; @@ -196,29 +178,6 @@ int format_volume(const char* volume) { return -1; } - if (strcmp(v->fs_type, "yaffs2") == 0 || strcmp(v->fs_type, "mtd") == 0) { - mtd_scan_partitions(); - const MtdPartition* partition = mtd_find_partition_by_name(v->blk_device); - if (partition == NULL) { - LOGE("format_volume: no MTD partition \"%s\"\n", v->blk_device); - return -1; - } - - MtdWriteContext *write = mtd_write_partition(partition); - if (write == NULL) { - LOGW("format_volume: can't open MTD \"%s\"\n", v->blk_device); - return -1; - } else if (mtd_erase_blocks(write, -1) == (off_t) -1) { - LOGW("format_volume: can't erase MTD \"%s\"\n", v->blk_device); - mtd_write_close(write); - return -1; - } else if (mtd_write_close(write)) { - LOGW("format_volume: can't close MTD \"%s\"\n", v->blk_device); - return -1; - } - return 0; - } - if (strcmp(v->fs_type, "ext4") == 0 || strcmp(v->fs_type, "f2fs") == 0) { // if there's a key_loc that looks like a path, it should be a // block device for storing encryption metadata. wipe it too. diff --git a/updater/Android.mk b/updater/Android.mk index 7c3f6160c..75af4bdd0 100644 --- a/updater/Android.mk +++ b/updater/Android.mk @@ -40,8 +40,8 @@ LOCAL_STATIC_LIBRARIES += \ libbase \ libotafault \ libedify \ - libmtdutils \ libminzip \ + libmounts \ libz \ libbz \ libcutils \ @@ -60,14 +60,11 @@ LOCAL_STATIC_LIBRARIES += \ libtune2fs \ $(tune2fs_static_libraries) -ifeq ($(TARGET_USERIMAGES_USE_EXT4), true) -LOCAL_CFLAGS += -DUSE_EXT4 LOCAL_CFLAGS += -Wno-unused-parameter LOCAL_C_INCLUDES += system/extras/ext4_utils LOCAL_STATIC_LIBRARIES += \ libsparse_static \ libz -endif LOCAL_C_INCLUDES += external/e2fsprogs/misc LOCAL_C_INCLUDES += $(LOCAL_PATH)/.. diff --git a/updater/install.cpp b/updater/install.cpp index bab2fe166..a6a29b286 100644 --- a/updater/install.cpp +++ b/updater/install.cpp @@ -50,17 +50,14 @@ #include "edify/expr.h" #include "openssl/sha.h" #include "minzip/DirUtil.h" -#include "mtdutils/mounts.h" -#include "mtdutils/mtdutils.h" +#include "mounts.h" #include "ota_io.h" #include "updater.h" #include "install.h" #include "tune2fs.h" -#ifdef USE_EXT4 #include "make_ext4fs.h" #include "wipe.h" -#endif // Send over the buffer to recovery though the command pipe. static void uiPrint(State* state, const std::string& buffer) { @@ -109,7 +106,6 @@ char* PrintSha1(const uint8_t* digest) { // mount(fs_type, partition_type, location, mount_point) // -// fs_type="yaffs2" partition_type="MTD" location=partition // fs_type="ext4" partition_type="EMMC" location=device Value* MountFn(const char* name, State* state, int argc, Expr* argv[]) { char* result = NULL; @@ -170,33 +166,14 @@ Value* MountFn(const char* name, State* state, int argc, Expr* argv[]) { } } - if (strcmp(partition_type, "MTD") == 0) { - mtd_scan_partitions(); - const MtdPartition* mtd; - mtd = mtd_find_partition_by_name(location); - if (mtd == NULL) { - uiPrintf(state, "%s: no mtd partition named \"%s\"\n", - name, location); - result = strdup(""); - goto done; - } - if (mtd_mount_partition(mtd, mount_point, fs_type, 0 /* rw */) != 0) { - uiPrintf(state, "mtd mount of %s failed: %s\n", - location, strerror(errno)); - result = strdup(""); - goto done; - } - result = mount_point; + if (mount(location, mount_point, fs_type, + MS_NOATIME | MS_NODEV | MS_NODIRATIME, + has_mount_options ? mount_options : "") < 0) { + uiPrintf(state, "%s: failed to mount %s at %s: %s\n", + name, location, mount_point, strerror(errno)); + result = strdup(""); } else { - if (mount(location, mount_point, fs_type, - MS_NOATIME | MS_NODEV | MS_NODIRATIME, - has_mount_options ? mount_options : "") < 0) { - uiPrintf(state, "%s: failed to mount %s at %s: %s\n", - name, location, mount_point, strerror(errno)); - result = strdup(""); - } else { - result = mount_point; - } + result = mount_point; } done: @@ -226,7 +203,7 @@ Value* IsMountedFn(const char* name, State* state, int argc, Expr* argv[]) { scan_mounted_volumes(); { - const MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point); + MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point); if (vol == NULL) { result = strdup(""); } else { @@ -256,7 +233,7 @@ Value* UnmountFn(const char* name, State* state, int argc, Expr* argv[]) { scan_mounted_volumes(); { - const MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point); + MountedVolume* vol = find_mounted_volume_by_mount_point(mount_point); if (vol == NULL) { uiPrintf(state, "unmount of %s failed; no such volume\n", mount_point); result = strdup(""); @@ -292,7 +269,6 @@ static int exec_cmd(const char* path, char* const argv[]) { // format(fs_type, partition_type, location, fs_size, mount_point) // -// fs_type="yaffs2" partition_type="MTD" location=partition fs_size= mount_point= // fs_type="ext4" partition_type="EMMC" location=device fs_size= mount_point= // fs_type="f2fs" partition_type="EMMC" location=device fs_size= mount_point= // if fs_size == 0, then make fs uses the entire partition. @@ -332,35 +308,7 @@ Value* FormatFn(const char* name, State* state, int argc, Expr* argv[]) { goto done; } - if (strcmp(partition_type, "MTD") == 0) { - mtd_scan_partitions(); - const MtdPartition* mtd = mtd_find_partition_by_name(location); - if (mtd == NULL) { - printf("%s: no mtd partition named \"%s\"", - name, location); - result = strdup(""); - goto done; - } - MtdWriteContext* ctx = mtd_write_partition(mtd); - if (ctx == NULL) { - printf("%s: can't write \"%s\"", name, location); - result = strdup(""); - goto done; - } - if (mtd_erase_blocks(ctx, -1) == -1) { - mtd_write_close(ctx); - printf("%s: failed to erase \"%s\"", name, location); - result = strdup(""); - goto done; - } - if (mtd_write_close(ctx) != 0) { - printf("%s: failed to close \"%s\"", name, location); - result = strdup(""); - goto done; - } - result = location; -#ifdef USE_EXT4 - } else if (strcmp(fs_type, "ext4") == 0) { + if (strcmp(fs_type, "ext4") == 0) { int status = make_ext4fs(location, atoll(fs_size), mount_point, sehandle); if (status != 0) { printf("%s: make_ext4fs failed (%d) on %s", @@ -387,7 +335,6 @@ Value* FormatFn(const char* name, State* state, int argc, Expr* argv[]) { goto done; } result = location; -#endif } else { printf("%s: unsupported fs_type \"%s\" partition_type \"%s\"", name, fs_type, partition_type); @@ -1059,98 +1006,6 @@ Value* FileGetPropFn(const char* name, State* state, int argc, Expr* argv[]) { return StringValue(result); } -// write_raw_image(filename_or_blob, partition) -Value* WriteRawImageFn(const char* name, State* state, int argc, Expr* argv[]) { - char* result = NULL; - - Value* partition_value; - Value* contents; - if (ReadValueArgs(state, argv, 2, &contents, &partition_value) < 0) { - return NULL; - } - - char* partition = NULL; - if (partition_value->type != VAL_STRING) { - ErrorAbort(state, "partition argument to %s must be string", name); - goto done; - } - partition = partition_value->data; - if (strlen(partition) == 0) { - ErrorAbort(state, "partition argument to %s can't be empty", name); - goto done; - } - if (contents->type == VAL_STRING && strlen((char*) contents->data) == 0) { - ErrorAbort(state, "file argument to %s can't be empty", name); - goto done; - } - - mtd_scan_partitions(); - const MtdPartition* mtd; - mtd = mtd_find_partition_by_name(partition); - if (mtd == NULL) { - printf("%s: no mtd partition named \"%s\"\n", name, partition); - result = strdup(""); - goto done; - } - - MtdWriteContext* ctx; - ctx = mtd_write_partition(mtd); - if (ctx == NULL) { - printf("%s: can't write mtd partition \"%s\"\n", - name, partition); - result = strdup(""); - goto done; - } - - bool success; - - if (contents->type == VAL_STRING) { - // we're given a filename as the contents - char* filename = contents->data; - FILE* f = ota_fopen(filename, "rb"); - if (f == NULL) { - printf("%s: can't open %s: %s\n", name, filename, strerror(errno)); - result = strdup(""); - goto done; - } - - success = true; - char* buffer = reinterpret_cast(malloc(BUFSIZ)); - int read; - while (success && (read = ota_fread(buffer, 1, BUFSIZ, f)) > 0) { - int wrote = mtd_write_data(ctx, buffer, read); - success = success && (wrote == read); - } - free(buffer); - ota_fclose(f); - } else { - // we're given a blob as the contents - ssize_t wrote = mtd_write_data(ctx, contents->data, contents->size); - success = (wrote == contents->size); - } - if (!success) { - printf("mtd_write_data to %s failed: %s\n", - partition, strerror(errno)); - } - - if (mtd_erase_blocks(ctx, -1) == -1) { - printf("%s: error erasing blocks of %s\n", name, partition); - } - if (mtd_write_close(ctx) != 0) { - printf("%s: error closing write of %s\n", name, partition); - } - - printf("%s %s partition\n", - success ? "wrote" : "failed to write", partition); - - result = success ? partition : strdup(""); - -done: - if (result != partition) FreeValue(partition_value); - FreeValue(contents); - return StringValue(result); -} - // apply_patch_space(bytes) Value* ApplyPatchSpaceFn(const char* name, State* state, int argc, Expr* argv[]) { @@ -1607,7 +1462,6 @@ void RegisterInstallFunctions() { RegisterFunction("getprop", GetPropFn); RegisterFunction("file_getprop", FileGetPropFn); - RegisterFunction("write_raw_image", WriteRawImageFn); RegisterFunction("apply_patch", ApplyPatchFn); RegisterFunction("apply_patch_check", ApplyPatchCheckFn); -- cgit v1.2.3