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author | Elliott Hughes <enh@google.com> | 2016-06-16 00:28:05 +0200 |
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committer | android-build-merger <android-build-merger@google.com> | 2016-06-16 00:28:05 +0200 |
commit | eaddde6888b1f58d70b338ad7725214781014324 (patch) | |
tree | 95df40add23e127030abe0cb224c606659a33932 /mtdutils/flash_image.c | |
parent | Merge \\"Add bootloader_message_ab struct.\\" am: 59f04b9982 (diff) | |
parent | resolve merge conflicts of 179c0d8 to stage-aosp-master (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | mtdutils/flash_image.c | 143 |
1 files changed, 0 insertions, 143 deletions
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 <errno.h> -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <unistd.h> - -#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; -} |