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-rw-r--r--mtdutils/Android.mk69
-rw-r--r--mtdutils/bml_over_mtd.c810
-rw-r--r--mtdutils/mounts.c223
-rw-r--r--mtdutils/mounts.h38
-rw-r--r--mtdutils/mtdutils.c812
-rw-r--r--mtdutils/mtdutils.h69
-rw-r--r--mtdutils/rk3xhack.c60
-rw-r--r--mtdutils/rk3xhack.h37
8 files changed, 2118 insertions, 0 deletions
diff --git a/mtdutils/Android.mk b/mtdutils/Android.mk
new file mode 100644
index 000000000..87ac08129
--- /dev/null
+++ b/mtdutils/Android.mk
@@ -0,0 +1,69 @@
+ifneq ($(TARGET_SIMULATOR),true)
+
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+ mtdutils.c \
+ mounts.c
+
+ifneq ($(filter rk30xx rk3188,$(TARGET_BOARD_PLATFORM)),)
+LOCAL_SRC_FILES += rk3xhack.c
+LOCAL_CFLAGS += -DRK3X
+endif
+
+ifeq ($(TARGET_MTD_BY_NAME),true)
+LOCAL_CFLAGS += -DBYNAME
+endif
+
+LOCAL_MODULE := libmtdutils
+LOCAL_STATIC_LIBRARIES := libcutils libc
+LOCAL_CLANG := true
+
+include $(BUILD_STATIC_LIBRARY)
+
+include $(CLEAR_VARS)
+
+LOCAL_SRC_FILES := \
+ mtdutils.c \
+ mounts.c
+
+ifneq ($(filter rk30xx rk3188,$(TARGET_BOARD_PLATFORM)),)
+LOCAL_SRC_FILES += rk3xhack.c
+LOCAL_CFLAGS += -DRK3X
+endif
+
+ifeq ($(TARGET_MTD_BY_NAME),true)
+LOCAL_CFLAGS += -DBYNAME
+endif
+
+LOCAL_MODULE := libmtdutils
+LOCAL_SHARED_LIBRARIES := libcutils libc
+LOCAL_CLANG := true
+
+include $(BUILD_SHARED_LIBRARY)
+
+ifeq ($(BOARD_USES_BML_OVER_MTD),true)
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := bml_over_mtd.c
+LOCAL_C_INCLUDES += $(commands_recovery_local_path)/mtdutils
+LOCAL_MODULE := libbml_over_mtd
+LOCAL_MODULE_TAGS := eng
+LOCAL_CFLAGS += -Dmain=bml_over_mtd_main
+include $(BUILD_STATIC_LIBRARY)
+
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES := bml_over_mtd.c
+LOCAL_MODULE := bml_over_mtd
+LOCAL_MODULE_TAGS := eng
+LOCAL_MODULE_CLASS := UTILITY_EXECUTABLES
+LOCAL_MODULE_PATH := $(PRODUCT_OUT)/utilities
+LOCAL_UNSTRIPPED_PATH := $(PRODUCT_OUT)/symbols/utilities
+LOCAL_MODULE_STEM := bml_over_mtd
+LOCAL_C_INCLUDES += $(commands_recovery_local_path)/mtdutils
+LOCAL_SHARED_LIBRARIES := libmtdutils libcutils liblog libc
+include $(BUILD_EXECUTABLE)
+endif
+
+endif # !TARGET_SIMULATOR
+
diff --git a/mtdutils/bml_over_mtd.c b/mtdutils/bml_over_mtd.c
new file mode 100644
index 000000000..12ca10915
--- /dev/null
+++ b/mtdutils/bml_over_mtd.c
@@ -0,0 +1,810 @@
+/*
+ * Copyright (C) 2011 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <limits.h>
+
+#include "cutils/log.h"
+
+#include <mtd/mtd-user.h>
+
+#include "mtdutils.h"
+
+#ifdef RK3X
+ #include "rk3xhack.h"
+#endif
+
+typedef struct BmlOverMtdReadContext {
+ const MtdPartition *partition;
+ char *buffer;
+ size_t consumed;
+ int fd;
+} BmlOverMtdReadContext;
+
+typedef struct BmlOverMtdWriteContext {
+ const MtdPartition *partition;
+ char *buffer;
+ size_t stored;
+ int fd;
+
+ off_t* bad_block_offsets;
+ int bad_block_alloc;
+ int bad_block_count;
+} BmlOverMtdWriteContext;
+
+
+static BmlOverMtdReadContext *bml_over_mtd_read_partition(const MtdPartition *partition)
+{
+ BmlOverMtdReadContext *ctx = (BmlOverMtdReadContext*) malloc(sizeof(BmlOverMtdReadContext));
+ 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);
+ free(ctx->buffer);
+ return NULL;
+ }
+
+ ctx->partition = partition;
+ ctx->consumed = partition->erase_size;
+ return ctx;
+}
+
+static void bml_over_mtd_read_close(BmlOverMtdReadContext *ctx)
+{
+ close(ctx->fd);
+ free(ctx->buffer);
+ free(ctx);
+}
+
+static BmlOverMtdWriteContext *bml_over_mtd_write_partition(const MtdPartition *partition)
+{
+ BmlOverMtdWriteContext *ctx = (BmlOverMtdWriteContext*) malloc(sizeof(BmlOverMtdWriteContext));
+ 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 int bml_over_mtd_write_close(BmlOverMtdWriteContext *ctx)
+{
+ int r = 0;
+ if (close(ctx->fd)) r = -1;
+ free(ctx->bad_block_offsets);
+ free(ctx->buffer);
+ free(ctx);
+ return r;
+}
+
+
+#ifdef LOG_TAG
+#undef LOG_TAG
+#endif
+
+#define LOG_TAG "bml_over_mtd"
+
+#define BLOCK_SIZE 2048
+#define SPARE_SIZE (BLOCK_SIZE >> 5)
+
+#define EXIT_CODE_BAD_BLOCKS 15
+
+static int 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);
+ return 1;
+}
+
+static unsigned short* CreateEmptyBlockMapping(const MtdPartition* pSrcPart)
+{
+ size_t srcTotal, srcErase, srcWrite;
+ if (mtd_partition_info(pSrcPart, &srcTotal, &srcErase, &srcWrite) != 0)
+ {
+ fprintf(stderr, "Failed to access partition.\n");
+ return NULL;
+ }
+
+ int numSrcBlocks = srcTotal/srcErase;
+
+ unsigned short* pMapping = malloc(numSrcBlocks * sizeof(unsigned short));
+ if (pMapping == NULL)
+ {
+ fprintf(stderr, "Failed to allocate block mapping memory.\n");
+ return NULL;
+ }
+ memset(pMapping, 0xFF, numSrcBlocks * sizeof(unsigned short));
+ return pMapping;
+}
+
+static const unsigned short* CreateBlockMapping(const MtdPartition* pSrcPart, int srcPartStartBlock,
+ const MtdPartition *pReservoirPart, int reservoirPartStartBlock)
+{
+ size_t srcTotal, srcErase, srcWrite;
+ if (mtd_partition_info(pSrcPart, &srcTotal, &srcErase, &srcWrite) != 0)
+ {
+ fprintf(stderr, "Failed to access partition.\n");
+ return NULL;
+ }
+
+ int numSrcBlocks = srcTotal/srcErase;
+
+ unsigned short* pMapping = malloc(numSrcBlocks * sizeof(unsigned short));
+ if (pMapping == NULL)
+ {
+ fprintf(stderr, "Failed to allocate block mapping memory.\n");
+ return NULL;
+ }
+ memset(pMapping, 0xFF, numSrcBlocks * sizeof(unsigned short));
+
+ size_t total, erase, write;
+ if (mtd_partition_info(pReservoirPart, &total, &erase, &write) != 0)
+ {
+ fprintf(stderr, "Failed to access reservoir partition.\n");
+ free(pMapping);
+ return NULL;
+ }
+
+ if (erase != srcErase || write != srcWrite)
+ {
+ fprintf(stderr, "Source partition and reservoir partition differ in size properties.\n");
+ free(pMapping);
+ return NULL;
+ }
+
+ printf("Partition info: Total %d, Erase %d, write %d\n", total, erase, write);
+
+ BmlOverMtdReadContext *readctx = bml_over_mtd_read_partition(pReservoirPart);
+ if (readctx == NULL)
+ {
+ fprintf(stderr, "Failed to open reservoir partition for reading.\n");
+ free(pMapping);
+ return NULL;
+ }
+
+ if (total < erase || total > INT_MAX)
+ {
+ fprintf(stderr, "Unsuitable reservoir partition properties.\n");
+ free(pMapping);
+ bml_over_mtd_read_close(readctx);
+ return NULL;
+ }
+
+ int foundMappingTable = 0;
+
+ int currOffset = total; //Offset *behind* the last byte
+ while (currOffset > 0)
+ {
+ currOffset -= erase;
+ loff_t pos = lseek64(readctx->fd, currOffset, SEEK_SET);
+ int mgbb = ioctl(readctx->fd, MEMGETBADBLOCK, &pos);
+ if (mgbb != 0)
+ {
+ printf("Bad block %d in reservoir area, skipping.\n", currOffset/erase);
+ continue;
+ }
+ ssize_t readBytes = read(readctx->fd, readctx->buffer, erase);
+ if (readBytes != (ssize_t)erase)
+ {
+ fprintf(stderr, "Failed to read good block in reservoir area (%s).\n",
+ strerror(errno));
+ free(pMapping);
+ bml_over_mtd_read_close(readctx);
+ return NULL;
+ }
+ if (readBytes >= 0x2000)
+ {
+ char* buf = readctx->buffer;
+ if (buf[0]=='U' && buf[1]=='P' && buf[2]=='C' && buf[3]=='H')
+ {
+ printf ("Found mapping block mark at 0x%x (block %d).\n", currOffset, currOffset/erase);
+
+ unsigned short* mappings = (unsigned short*) &buf[0x1000];
+ if (mappings[0]==0 && mappings[1]==0xffff)
+ {
+ printf("Found start of mapping table.\n");
+ foundMappingTable = 1;
+ //Skip first entry (dummy)
+ unsigned short* mappingEntry = mappings + 2;
+ while (mappingEntry - mappings < 100
+ && mappingEntry[0] != 0xffff)
+ {
+ unsigned short rawSrcBlk = mappingEntry[0];
+ unsigned short rawDstBlk = mappingEntry[1];
+
+ printf("Found raw block mapping %d -> %d\n", rawSrcBlk,
+ rawDstBlk);
+
+ unsigned int srcAbsoluteStartAddress = srcPartStartBlock * erase;
+ unsigned int resAbsoluteStartAddress = reservoirPartStartBlock * erase;
+
+ int reservoirLastBlock = reservoirPartStartBlock + numSrcBlocks - 1;
+ if (rawDstBlk < reservoirPartStartBlock
+ || rawDstBlk*erase >= resAbsoluteStartAddress+currOffset)
+ {
+ fprintf(stderr, "Mapped block not within reasonable reservoir area.\n");
+ foundMappingTable = 0;
+ break;
+ }
+
+ int srcLastBlock = srcPartStartBlock + numSrcBlocks - 1;
+ if (rawSrcBlk >= srcPartStartBlock && rawSrcBlk <= srcLastBlock)
+ {
+
+ unsigned short relSrcBlk = rawSrcBlk - srcPartStartBlock;
+ unsigned short relDstBlk = rawDstBlk - reservoirPartStartBlock;
+ printf("Partition relative block mapping %d -> %d\n",relSrcBlk, relDstBlk);
+
+ printf("Absolute mapped start addresses 0x%x -> 0x%x\n",
+ srcAbsoluteStartAddress+relSrcBlk*erase,
+ resAbsoluteStartAddress+relDstBlk*erase);
+ printf("Partition relative mapped start addresses 0x%x -> 0x%x\n",
+ relSrcBlk*erase, relDstBlk*erase);
+
+ //Set mapping entry. For duplicate entries, later entries replace former ones.
+ //*Assumption*: Bad blocks in reservoir area will not be mapped themselves in
+ //the mapping table. User partition blocks will not be mapped to bad blocks
+ //(only) in the reservoir area. This has to be confirmed on a wider range of
+ //devices.
+ pMapping[relSrcBlk] = relDstBlk;
+
+ }
+ mappingEntry+=2;
+ }
+ break; //We found the mapping table, no need to search further
+ }
+
+
+ }
+ }
+
+ }
+ bml_over_mtd_read_close(readctx);
+
+ if (foundMappingTable == 0)
+ {
+ fprintf(stderr, "Cannot find mapping table in reservoir partition.\n");
+ free(pMapping);
+ return NULL;
+ }
+
+ //Consistency and validity check
+ int mappingValid = 1;
+ readctx = bml_over_mtd_read_partition(pSrcPart);
+ if (readctx == NULL)
+ {
+ fprintf(stderr, "Cannot open source partition for reading.\n");
+ free(pMapping);
+ return NULL;
+ }
+ int currBlock = 0;
+ for (;currBlock < numSrcBlocks; ++currBlock)
+ {
+ loff_t pos = lseek64(readctx->fd, currBlock*erase, SEEK_SET);
+ int mgbb = ioctl(readctx->fd, MEMGETBADBLOCK, &pos);
+ if (mgbb == 0)
+ {
+ if (pMapping[currBlock]!=0xffff)
+ {
+ fprintf(stderr, "Consistency error: Good block has mapping entry %d -> %d\n", currBlock, pMapping[currBlock]);
+ mappingValid = 0;
+ }
+ } else
+ {
+ //Bad block!
+ if (pMapping[currBlock]==0xffff)
+ {
+ fprintf(stderr, "Consistency error: Bad block has no mapping entry \n");
+ mappingValid = 0;
+ } else
+ {
+ BmlOverMtdReadContext* reservoirReadCtx = bml_over_mtd_read_partition(pReservoirPart);
+ if (reservoirReadCtx == 0)
+ {
+ fprintf(stderr, "Reservoir partition cannot be opened for reading in consistency check.\n");
+ mappingValid = 0;
+ } else
+ {
+ pos = lseek64(reservoirReadCtx->fd, pMapping[currBlock]*erase, SEEK_SET);
+ mgbb = ioctl(reservoirReadCtx->fd, MEMGETBADBLOCK, &pos);
+ if (mgbb == 0)
+ {
+ printf("Bad block has properly mapped reservoir block %d -> %d\n",currBlock, pMapping[currBlock]);
+ }
+ else
+ {
+ fprintf(stderr, "Consistency error: Mapped block is bad, too. (%d -> %d)\n",currBlock, pMapping[currBlock]);
+ mappingValid = 0;
+ }
+
+ }
+ bml_over_mtd_read_close(reservoirReadCtx);
+ }
+
+ }
+
+ }
+ bml_over_mtd_read_close(readctx);
+
+
+ if (!mappingValid)
+ {
+ free(pMapping);
+ return NULL;
+ }
+
+ return pMapping;
+}
+
+static void ReleaseBlockMapping(const unsigned short* blockMapping)
+{
+ free((void*)blockMapping);
+}
+
+static int dump_bml_partition(const MtdPartition* pSrcPart, const MtdPartition* pReservoirPart,
+ const unsigned short* blockMapping, const char* filename)
+{
+ int fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0666);
+ if (fd < 0)
+ {
+ fprintf(stderr, "error opening %s", filename);
+ return -1;
+ }
+ BmlOverMtdReadContext* pSrcRead = bml_over_mtd_read_partition(pSrcPart);
+ if (pSrcRead == NULL)
+ {
+ close(fd);
+ fprintf(stderr, "dump_bml_partition: Error opening src part for reading.\n");
+ return -1;
+ }
+
+ BmlOverMtdReadContext* pResRead = bml_over_mtd_read_partition(pReservoirPart);
+ if (pResRead == NULL)
+ {
+ close(fd);
+ bml_over_mtd_read_close(pSrcRead);
+ fprintf(stderr, "dump_bml_partition: Error opening reservoir part for reading.\n");
+ return -1;
+ }
+
+
+ int numBlocks = pSrcPart->size / pSrcPart->erase_size;
+ int currblock = 0;
+ for (;currblock < numBlocks; ++currblock)
+ {
+ int srcFd = -1;
+ if (blockMapping[currblock] == 0xffff)
+ {
+ //Good block, use src partition
+ srcFd = pSrcRead->fd;
+ if (lseek64(pSrcRead->fd, currblock*pSrcPart->erase_size, SEEK_SET)==-1)
+ {
+ close(fd);
+ bml_over_mtd_read_close(pSrcRead);
+ bml_over_mtd_read_close(pResRead);
+ fprintf(stderr, "dump_bml_partition: lseek in src partition failed\n");
+ return -1;
+ }
+ } else
+ {
+ //Bad block, use mapped block in reservoir partition
+ srcFd = pResRead->fd;
+ if (lseek64(pResRead->fd, blockMapping[currblock]*pSrcPart->erase_size, SEEK_SET)==-1)
+ {
+ close(fd);
+ bml_over_mtd_read_close(pSrcRead);
+ bml_over_mtd_read_close(pResRead);
+ fprintf(stderr, "dump_bml_partition: lseek in reservoir partition failed\n");
+ return -1;
+ }
+ }
+ size_t blockBytesRead = 0;
+ while (blockBytesRead < pSrcPart->erase_size)
+ {
+ ssize_t len = read(srcFd, pSrcRead->buffer + blockBytesRead,
+ pSrcPart->erase_size - blockBytesRead);
+ if (len <= 0)
+ {
+ close(fd);
+ bml_over_mtd_read_close(pSrcRead);
+ bml_over_mtd_read_close(pResRead);
+ fprintf(stderr, "dump_bml_partition: reading partition failed\n");
+ return -1;
+ }
+ blockBytesRead += len;
+ }
+
+ size_t blockBytesWritten = 0;
+ while (blockBytesWritten < pSrcPart->erase_size)
+ {
+ ssize_t len = write(fd, pSrcRead->buffer + blockBytesWritten,
+ pSrcPart->erase_size - blockBytesWritten);
+ if (len <= 0)
+ {
+ close(fd);
+ bml_over_mtd_read_close(pSrcRead);
+ bml_over_mtd_read_close(pResRead);
+ fprintf(stderr, "dump_bml_partition: writing partition dump file failed\n");
+ return -1;
+ }
+ blockBytesWritten += len;
+ }
+
+ }
+
+ bml_over_mtd_read_close(pSrcRead);
+ bml_over_mtd_read_close(pResRead);
+
+ if (close(fd)) {
+ unlink(filename);
+ printf("error closing %s", filename);
+ return -1;
+ }
+
+ return 0;
+}
+
+static ssize_t bml_over_mtd_write_block(int fd, ssize_t erase_size, char* data)
+{
+ off_t pos = lseek(fd, 0, SEEK_CUR);
+ if (pos == (off_t) -1) return -1;
+
+ ssize_t size = erase_size;
+ loff_t bpos = pos;
+ int ret = ioctl(fd, MEMGETBADBLOCK, &bpos);
+ if (ret != 0 && !(ret == -1 && errno == EOPNOTSUPP)) {
+ fprintf(stderr,
+ "Mapping failure: Trying to write bad block at 0x%08lx (ret %d errno %d)\n",
+ pos, ret, errno);
+ return -1;
+ }
+
+ struct erase_info_user erase_info;
+ erase_info.start = pos;
+ erase_info.length = size;
+ int retry;
+ for (retry = 0; retry < 2; ++retry) {
+#ifdef RK3X
+ if (rk30_zero_out(fd, pos, size) < 0) {
+ fprintf(stderr, "mtd: erase failure at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ continue;
+ }
+#else
+ if (ioctl(fd, MEMERASE, &erase_info) < 0) {
+ fprintf(stderr, "mtd: erase failure at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ continue;
+ }
+#endif
+ if (lseek(fd, pos, SEEK_SET) != pos ||
+ write(fd, data, size) != size) {
+ fprintf(stderr, "mtd: write error at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ }
+
+ char verify[size];
+ if (lseek(fd, pos, SEEK_SET) != pos ||
+ read(fd, verify, size) != size) {
+ fprintf(stderr, "mtd: re-read error at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ continue;
+ }
+ if (memcmp(data, verify, size) != 0) {
+ fprintf(stderr, "mtd: verification error at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ continue;
+ }
+
+ if (retry > 0) {
+ fprintf(stderr, "mtd: wrote block after %d retries\n", retry);
+ }
+ fprintf(stderr, "mtd: successfully wrote block at %llx\n", pos);
+ return size; // Success!
+ }
+
+
+ fprintf(stderr, "mtd: Block at %llx could not be properly written.\n", pos);
+ // Ran out of space on the device
+ errno = ENOSPC;
+ return -1;
+}
+
+static int flash_bml_partition(const MtdPartition* pSrcPart, const MtdPartition* pReservoirPart,
+ const unsigned short* blockMapping, const char* filename)
+{
+ int fd = open(filename, O_RDONLY);
+ if (fd < 0)
+ {
+ fprintf(stderr, "error opening %s", filename);
+ return -1;
+ }
+ BmlOverMtdWriteContext* pSrcWrite = bml_over_mtd_write_partition(pSrcPart);
+ if (pSrcWrite == NULL)
+ {
+ close(fd);
+ fprintf(stderr, "flash_bml_partition: Error opening src part for writing.\n");
+ return -1;
+ }
+
+#ifdef DUMMY_WRITING
+ close(pSrcWrite->fd);
+ pSrcWrite->fd = open("/sdcard/srcPartWriteDummy.bin", O_WRONLY|O_CREAT|O_TRUNC, 0666);
+#endif
+
+ BmlOverMtdWriteContext* pResWrite = bml_over_mtd_write_partition(pReservoirPart);
+ if (pResWrite == NULL)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ fprintf(stderr, "flash_bml_partition: Error opening reservoir part for writing.\n");
+ return -1;
+ }
+#ifdef DUMMY_WRITING
+ close(pResWrite->fd);
+ pResWrite->fd = open("/sdcard/resPartWriteDummy.bin", O_WRONLY|O_CREAT|O_TRUNC, 0666);
+#endif
+
+ struct stat fileStat;
+ if (fstat(fd, &fileStat) != 0)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+ fprintf(stderr, "flash_bml_partition: Failed to stat source file.\n");
+ return -1;
+
+ }
+ if (fileStat.st_size > pSrcPart->size)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+ fprintf(stderr, "flash_bml_partition: Source file too large for target partition.\n");
+ return -1;
+ }
+
+ int numBlocks = (fileStat.st_size + pSrcPart->erase_size - 1) / pSrcPart->erase_size;
+ int currblock;
+ for (currblock = 0 ;currblock < numBlocks; ++currblock)
+ {
+ memset(pSrcWrite->buffer, 0xFF, pSrcPart->erase_size);
+ size_t blockBytesRead = 0;
+ while (blockBytesRead < pSrcPart->erase_size)
+ {
+ ssize_t len = read(fd, pSrcWrite->buffer + blockBytesRead,
+ pSrcPart->erase_size - blockBytesRead);
+ if (len < 0)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+ fprintf(stderr, "flash_bml_partition: read source file failed\n");
+ return -1;
+ }
+ if (len == 0)
+ {
+ //End of file
+ break;
+ }
+
+ blockBytesRead += len;
+ }
+
+
+
+ int srcFd = -1;
+ if (blockMapping[currblock] == 0xffff)
+ {
+ //Good block, use src partition
+ srcFd = pSrcWrite->fd;
+ if (lseek64(pSrcWrite->fd, currblock*pSrcPart->erase_size, SEEK_SET)==-1)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+ fprintf(stderr, "flash_bml_partition: lseek in src partition failed\n");
+ return -1;
+ }
+ } else
+ {
+ //Bad block, use mapped block in reservoir partition
+ srcFd = pResWrite->fd;
+ if (lseek64(pResWrite->fd, blockMapping[currblock]*pSrcPart->erase_size, SEEK_SET)==-1)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+ fprintf(stderr, "flash_bml_partition: lseek in reservoir partition failed\n");
+ return -1;
+ }
+ }
+ size_t blockBytesWritten = 0;
+ while (blockBytesWritten < pSrcPart->erase_size)
+ {
+#ifdef DUMMY_WRITING
+ ssize_t len = write(srcFd, pSrcWrite->buffer + blockBytesWritten,
+ pSrcPart->erase_size - blockBytesWritten);
+#else
+ ssize_t len = bml_over_mtd_write_block(srcFd, pSrcPart->erase_size, pSrcWrite->buffer);
+#endif
+ if (len <= 0)
+ {
+ close(fd);
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+ fprintf(stderr, "flash_bml_partition: writing to partition failed\n");
+ return -1;
+ }
+ blockBytesWritten += len;
+ }
+
+
+ }
+
+ bml_over_mtd_write_close(pSrcWrite);
+ bml_over_mtd_write_close(pResWrite);
+
+ if (close(fd)) {
+ printf("error closing %s", filename);
+ return -1;
+ }
+
+ return 0;
+}
+
+static int scan_partition(const MtdPartition* pPart)
+{
+ BmlOverMtdReadContext* readCtx = bml_over_mtd_read_partition(pPart);
+ if (readCtx == NULL)
+ {
+ fprintf(stderr, "Failed to open partition for reading.\n");
+ return -1;
+ }
+
+ int numBadBlocks = 0;
+ size_t numBlocks = pPart->size / pPart->erase_size;
+ size_t currBlock;
+ for (currBlock = 0; currBlock < numBlocks; ++currBlock)
+ {
+
+ loff_t pos = currBlock * pPart->erase_size;
+ int mgbb = ioctl(readCtx->fd, MEMGETBADBLOCK, &pos);
+ if (mgbb != 0)
+ {
+ printf("Bad block %d at 0x%x.\n", currBlock, (unsigned int)pos);
+ numBadBlocks++;
+ }
+ }
+
+ bml_over_mtd_read_close(readCtx);
+ if (numBadBlocks == 0)
+ {
+ printf("No bad blocks.\n");
+ return 0;
+ }
+ return -1 ;
+}
+
+int main(int argc, char **argv)
+{
+ if (argc != 7 && (argc != 3 || (argc == 3 && strcmp(argv[1],"scan"))!=0)
+ && (argc != 6 || (argc == 6 && strcmp(argv[1],"scan"))!=0))
+ return die("Usage: %s dump|flash <partition> <partition_start_block> <reservoirpartition> <reservoir_start_block> <file>\n"
+ "E.g. %s dump boot 72 reservoir 2004 file.bin\n"
+ "Usage: %s scan <partition> [<partition_start_block> <reservoirpartition> <reservoir_start_block>]\n"
+ ,argv[0], argv[0], argv[0]);
+ int num_partitions = mtd_scan_partitions();
+ const MtdPartition *pSrcPart = mtd_find_partition_by_name(argv[2]);
+ if (pSrcPart == NULL)
+ return die("Cannot find partition %s", argv[2]);
+
+ int scanResult = scan_partition(pSrcPart);
+
+ if (argc == 3 && strcmp(argv[1],"scan")==0)
+ {
+ return (scanResult == 0 ? 0 : EXIT_CODE_BAD_BLOCKS);
+ }
+
+ int retVal = 0;
+ const MtdPartition* pReservoirPart = mtd_find_partition_by_name(argv[4]);
+ if (pReservoirPart == NULL)
+ return die("Cannot find partition %s", argv[4]);
+
+ int srcPartStartBlock = atoi(argv[3]);
+ int reservoirPartStartBlock = atoi(argv[5]);
+ const unsigned short* pMapping = CreateBlockMapping(pSrcPart, srcPartStartBlock,
+ pReservoirPart, reservoirPartStartBlock);
+
+ if (pMapping == NULL && scanResult == 0)
+ {
+ printf("Generating empty block mapping table for error-free partition.\n");
+ pMapping = CreateEmptyBlockMapping(pSrcPart);
+ }
+
+ if (argc == 6 && strcmp(argv[1],"scan")==0)
+ {
+ retVal = (scanResult == 0 ? 0 : EXIT_CODE_BAD_BLOCKS);
+ }
+
+ if (pMapping == NULL)
+ return die("Failed to create block mapping table");
+
+ if (strcmp(argv[1],"dump")==0)
+ {
+ retVal = dump_bml_partition(pSrcPart, pReservoirPart, pMapping, argv[6]);
+ if (retVal == 0)
+ printf("Successfully dumped partition to %s\n", argv[6]);
+ }
+
+ if (strcmp(argv[1],"flash")==0)
+ {
+ retVal = flash_bml_partition(pSrcPart, pReservoirPart, pMapping, argv[6]);
+ if (retVal == 0)
+ printf("Successfully wrote %s to partition\n", argv[6]);
+
+ }
+
+
+ ReleaseBlockMapping(pMapping);
+ return retVal;
+}
+
diff --git a/mtdutils/mounts.c b/mtdutils/mounts.c
new file mode 100644
index 000000000..cd3738a0b
--- /dev/null
+++ b/mtdutils/mounts.c
@@ -0,0 +1,223 @@
+/*
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <unistd.h>
+#include <sys/mount.h>
+
+#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()
+{
+ char buf[2048];
+ const char *bufp;
+ int fd;
+ ssize_t nbytes;
+
+ 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 the file contents.
+ */
+ fd = open(PROC_MOUNTS_FILENAME, O_RDONLY);
+ if (fd < 0) {
+ goto bail;
+ }
+ nbytes = 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/mounts
+ * rootfs / rootfs rw 0 0
+ * /dev/pts /dev/pts devpts rw 0 0
+ * /proc /proc proc rw 0 0
+ * /sys /sys sysfs rw 0 0
+ * /dev/block/mtdblock4 /system yaffs2 rw,nodev,noatime,nodiratime 0 0
+ * /dev/block/mtdblock5 /data yaffs2 rw,nodev,noatime,nodiratime 0 0
+ * /dev/block/mmcblk0p1 /sdcard vfat rw,sync,dirsync,fmask=0000,dmask=0000,codepage=cp437,iocharset=iso8859-1,utf8 0 0
+ *
+ * The zeroes at the end are dummy placeholder fields to make the
+ * output match Linux's /etc/mtab, but don't represent anything here.
+ */
+ bufp = buf;
+ while (nbytes > 0) {
+ char device[64];
+ char mount_point[64];
+ char filesystem[64];
+ char flags[128];
+ int matches;
+
+ /* %as is a gnu extension that malloc()s a string for each field.
+ */
+ matches = sscanf(bufp, "%63s %63s %63s %127s",
+ device, mount_point, filesystem, flags);
+
+ if (matches == 4) {
+ device[sizeof(device)-1] = '\0';
+ mount_point[sizeof(mount_point)-1] = '\0';
+ filesystem[sizeof(filesystem)-1] = '\0';
+ flags[sizeof(flags)-1] = '\0';
+
+ MountedVolume *v =
+ &g_mounts_state.volumes[g_mounts_state.volume_count++];
+ v->device = strdup(device);
+ v->mount_point = strdup(mount_point);
+ v->filesystem = strdup(filesystem);
+ v->flags = strdup(flags);
+ } else {
+printf("matches was %d on <<%.40s>>\n", matches, bufp);
+ }
+
+ /* Eat the line.
+ */
+ while (nbytes > 0 && *bufp != '\n') {
+ bufp++;
+ nbytes--;
+ }
+ if (nbytes > 0) {
+ bufp++;
+ nbytes--;
+ }
+ }
+
+ return 0;
+
+bail:
+//TODO: free the strings we've allocated.
+ g_mounts_state.volume_count = 0;
+ return -1;
+}
+
+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
new file mode 100644
index 000000000..ed7fb5fe3
--- /dev/null
+++ b/mtdutils/mounts.h
@@ -0,0 +1,38 @@
+/*
+ * 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_
+
+typedef struct {
+ const char *device;
+ const char *mount_point;
+ const char *filesystem;
+ const char *flags;
+} 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);
+
+#endif // MTDUTILS_MOUNTS_H_
diff --git a/mtdutils/mtdutils.c b/mtdutils/mtdutils.c
new file mode 100644
index 000000000..7a22efe2e
--- /dev/null
+++ b/mtdutils/mtdutils.c
@@ -0,0 +1,812 @@
+/*
+ * 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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <sys/mount.h> // for _IOW, _IOR, mount()
+#include <sys/stat.h>
+#include <mtd/mtd-user.h>
+#undef NDEBUG
+#include <assert.h>
+
+#include "mtdutils.h"
+
+#ifdef RK3X
+ #include "rk3xhack.h"
+#endif
+
+#ifdef BYNAME
+static const char mtdprefix[] = "/dev/block/mtd/by-name/";
+#define MTD_BASENAME_OFFSET (sizeof(mtdprefix)-1)
+#endif
+
+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;
+#ifdef BYNAME
+ asprintf(&p->name, "%s%s", mtdprefix, mtdname);
+#else
+ p->name = strdup(mtdname);
+#endif
+ 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;
+ }
+#ifdef BYNAME
+ if (strcmp(p->name+MTD_BASENAME_OFFSET, name) == 0) {
+ return p;
+ }
+#endif
+ }
+ }
+ }
+ 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)
+{
+ ssize_t read = 0;
+ while (read < (int) 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 >= (int)len) {
+ return read;
+ }
+
+ // Read the next block into the buffer
+ if (ctx->consumed == ctx->partition->erase_size && read < (int) 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) {
+#ifdef RK3X
+ if (rk30_zero_out(fd, pos, size) < 0) {
+ fprintf(stderr, "mtd: erase failure at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ continue;
+ }
+#else
+ if (ioctl(fd, MEMERASE, &erase_info) < 0) {
+ printf("mtd: erase failure at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ continue;
+ }
+#endif
+ 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);
+#ifdef RK3X
+ rk30_zero_out(fd, pos, size);
+#else
+
+ ioctl(fd, MEMERASE, &erase_info);
+#endif
+ 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;
+#ifdef RK3X
+ if (rk30_zero_out(ctx->fd, pos, ctx->partition->erase_size) < 0) {
+ fprintf(stderr, "mtd: erase failure at 0x%08lx\n", pos);
+ }
+#else
+ if (ioctl(ctx->fd, MEMERASE, &erase_info) < 0) {
+ printf("mtd: erase failure at 0x%08lx\n", pos);
+ }
+#endif
+ 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;
+}
+
+/* Return the offset of the first good block at or after pos (which
+ * might be pos itself).
+ */
+off_t mtd_find_write_start(MtdWriteContext *ctx, off_t pos) {
+ int i;
+ for (i = 0; i < ctx->bad_block_count; ++i) {
+ if (ctx->bad_block_offsets[i] == pos) {
+ pos += ctx->partition->erase_size;
+ } else if (ctx->bad_block_offsets[i] > pos) {
+ return pos;
+ }
+ }
+ return pos;
+}
+
+#define BLOCK_SIZE 2048
+#define SPARE_SIZE (BLOCK_SIZE >> 5)
+#define HEADER_SIZE 2048
+
+int cmd_mtd_restore_raw_partition(const char *partition_name, const char *filename)
+{
+ const MtdPartition *ptn;
+ MtdWriteContext *write;
+ void *data;
+
+ FILE* f = fopen(filename, "rb");
+ if (f == NULL) {
+ fprintf(stderr, "error opening %s", filename);
+ return -1;
+ }
+
+ if (mtd_scan_partitions() <= 0)
+ {
+ fprintf(stderr, "error scanning partitions");
+ return -1;
+ }
+ const MtdPartition *mtd = mtd_find_partition_by_name(partition_name);
+ if (mtd == NULL)
+ {
+ fprintf(stderr, "can't find %s partition", partition_name);
+ return -1;
+ }
+
+ int fd = open(filename, O_RDONLY);
+ if (fd < 0)
+ {
+ printf("error opening %s", filename);
+ return -1;
+ }
+
+ MtdWriteContext* ctx = mtd_write_partition(mtd);
+ if (ctx == NULL) {
+ printf("error writing %s", partition_name);
+ return -1;
+ }
+
+ int success = 1;
+ char* buffer = malloc(BUFSIZ);
+ int read;
+ while (success && (read = fread(buffer, 1, BUFSIZ, f)) > 0) {
+ int wrote = mtd_write_data(ctx, buffer, read);
+ success = success && (wrote == read);
+ }
+ free(buffer);
+ fclose(f);
+
+ if (!success) {
+ fprintf(stderr, "error writing %s", partition_name);
+ return -1;
+ }
+
+ if (mtd_erase_blocks(ctx, -1) == -1) {
+ fprintf(stderr, "error erasing blocks of %s\n", partition_name);
+ }
+ if (mtd_write_close(ctx) != 0) {
+ fprintf(stderr, "error closing write of %s\n", partition_name);
+ }
+ printf("%s %s partition\n", success ? "wrote" : "failed to write", partition_name);
+ return 0;
+}
+
+
+int cmd_mtd_backup_raw_partition(const char *partition_name, const char *filename)
+{
+ MtdReadContext *in;
+ const MtdPartition *partition;
+ char buf[BLOCK_SIZE + SPARE_SIZE];
+ size_t partition_size;
+ size_t read_size;
+ size_t total;
+ int fd;
+ int wrote;
+ int len;
+
+ if (mtd_scan_partitions() <= 0)
+ {
+ printf("error scanning partitions");
+ return -1;
+ }
+
+ partition = mtd_find_partition_by_name(partition_name);
+ if (partition == NULL)
+ {
+ printf("can't find %s partition", partition_name);
+ return -1;
+ }
+
+ if (mtd_partition_info(partition, &partition_size, NULL, NULL)) {
+ printf("can't get info of partition %s", partition_name);
+ return -1;
+ }
+
+ if (!strcmp(filename, "-")) {
+ fd = fileno(stdout);
+ }
+ else {
+ fd = open(filename, O_WRONLY|O_CREAT|O_TRUNC, 0666);
+ }
+
+ if (fd < 0)
+ {
+ printf("error opening %s", filename);
+ return -1;
+ }
+
+ in = mtd_read_partition(partition);
+ if (in == NULL) {
+ close(fd);
+ unlink(filename);
+ printf("error opening %s: %s\n", partition_name, strerror(errno));
+ return -1;
+ }
+
+ total = 0;
+ while ((len = mtd_read_data(in, buf, BLOCK_SIZE)) > 0) {
+ wrote = write(fd, buf, len);
+ if (wrote != len) {
+ close(fd);
+ unlink(filename);
+ printf("error writing %s", filename);
+ return -1;
+ }
+ total += BLOCK_SIZE;
+ }
+
+ mtd_read_close(in);
+
+ if (close(fd)) {
+ unlink(filename);
+ printf("error closing %s", filename);
+ return -1;
+ }
+ return 0;
+}
+
+int cmd_mtd_erase_raw_partition(const char *partition_name)
+{
+ MtdWriteContext *out;
+ size_t erased;
+ size_t total_size;
+ size_t erase_size;
+
+ if (mtd_scan_partitions() <= 0)
+ {
+ printf("error scanning partitions");
+ return -1;
+ }
+ const MtdPartition *p = mtd_find_partition_by_name(partition_name);
+ if (p == NULL)
+ {
+ printf("can't find %s partition", partition_name);
+ return -1;
+ }
+
+ out = mtd_write_partition(p);
+ if (out == NULL)
+ {
+ printf("could not estabilish write context for %s", partition_name);
+ return -1;
+ }
+
+ // do the actual erase, -1 = full partition erase
+ erased = mtd_erase_blocks(out, -1);
+
+ // erased = bytes erased, if zero, something borked
+ if (!erased)
+ {
+ printf("error erasing %s", partition_name);
+ return -1;
+ }
+
+ return 0;
+}
+
+int cmd_mtd_erase_partition(const char *partition, const char *filesystem)
+{
+ return cmd_mtd_erase_raw_partition(partition);
+}
+
+
+int cmd_mtd_mount_partition(const char *partition, const char *mount_point, const char *filesystem, int read_only)
+{
+ mtd_scan_partitions();
+ const MtdPartition *p;
+ p = mtd_find_partition_by_name(partition);
+ if (p == NULL) {
+ return -1;
+ }
+ return mtd_mount_partition(p, mount_point, filesystem, read_only);
+}
+
+int cmd_mtd_get_partition_device(const char *partition, char *device)
+{
+ mtd_scan_partitions();
+ MtdPartition *p = mtd_find_partition_by_name(partition);
+ if (p == NULL)
+ return -1;
+ sprintf(device, "/dev/block/mtdblock%d", p->device_index);
+ return 0;
+} \ No newline at end of file
diff --git a/mtdutils/mtdutils.h b/mtdutils/mtdutils.h
new file mode 100644
index 000000000..235cbe7ce
--- /dev/null
+++ b/mtdutils/mtdutils.h
@@ -0,0 +1,69 @@
+/*
+ * 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 <sys/types.h> // 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 *);
+
+struct MtdPartition {
+ int device_index;
+ unsigned int size;
+ unsigned int erase_size;
+ char *name;
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // MTDUTILS_H_
diff --git a/mtdutils/rk3xhack.c b/mtdutils/rk3xhack.c
new file mode 100644
index 000000000..930f60593
--- /dev/null
+++ b/mtdutils/rk3xhack.c
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2013, Sergey 'Jin' Bostandzhyan
+ *
+ * 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.
+ */
+
+/* This is a hack for Rockchip rk3x based devices. The problem is that
+ * the MEMERASE ioctl is failing (hangs and never returns) in their kernel.
+ * The sources are not fully available, so fixing it in the rk30xxnand_ko driver
+ * is not possible.
+ *
+ * I straced the stock recovery application and it seems to avoid this
+ * particular ioctl, instead it is simply writing zeroes using the write() call.
+ *
+ * This workaround does the same and will replace all MEMERASE occurances in
+ * the recovery code.
+ */
+
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include "rk3xhack.h"
+
+int rk30_zero_out(int fd, off_t pos, ssize_t size)
+{
+ if (lseek(fd, pos, SEEK_SET) != pos) {
+ fprintf(stderr, "mtd: erase failure at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ return -1;
+ }
+
+ unsigned char *zb = (unsigned char *)calloc(1, size);
+ if (zb == NULL) {
+ fprintf(stderr, "mtd: erase failure, could not allocate memory\n");
+ return -1;
+ }
+
+ if (write(fd, zb, size) != size) {
+ fprintf(stderr, "mtd: erase failure at 0x%08lx (%s)\n",
+ pos, strerror(errno));
+ free(zb);
+ return -1;
+ }
+
+ free(zb);
+ return 0;
+}
diff --git a/mtdutils/rk3xhack.h b/mtdutils/rk3xhack.h
new file mode 100644
index 000000000..3cc16e49e
--- /dev/null
+++ b/mtdutils/rk3xhack.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2013 Sergey 'Jin' Bostandzhyan
+ *
+ * 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.
+ */
+
+/* This is a hack for Rockchip rk3x based devices. The problem is that
+ * the MEMERASE ioctl is failing (hangs and never returns) in their kernel.
+ * The sources are not fully available, so fixing it in the rk30xxnand_ko driver
+ * is not possible.
+ *
+ * I straced the stock recovery application and it seems to avoid this
+ * particular ioctl, instead it is simply writing zeroes using the write() call.
+ *
+ * This workaround does the same and will replace all MEMERASE occurances in
+ * the recovery code.
+ */
+
+#ifndef __RK3X_HACK_H__
+#define __RK3X_HACK_H__
+
+#include <sys/types.h> // for size_t, etc.
+
+// write zeroes to fd at position pos
+int zero_out(int fd, off_t pos, ssize_t length);
+
+#endif//__RK3X_HACK_H__
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 15:01:19 +0100