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system/fastboot: Fix that total_chunks of sparse_header maybe error

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when size of image passed to command "fastboot flash" is not 4KB aligned.

Signed-off-by: wangjianyu3 <wangjianyu3@xiaomi.com>
This commit is contained in:
wangjianyu3 2024-08-05 16:33:55 +08:00 • committed by Xiang Xiao
parent a413f6bcac
commit caa47f282e
1 changed files with 2 additions and 2 deletions
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4
system/fastboot/fastboot.c
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@ -362,6 +362,7 @@ static int
fastboot_flash_program(FAR struct fastboot_ctx_s *context, int fd)
{
FAR char *chunk_ptr = context->download_buffer;
FAR char *end_ptr = chunk_ptr + context->download_size;
FAR struct fastboot_sparse_header_s *sparse;
uint32_t chunk_num;
int ret = OK;
@ -382,10 +383,9 @@ fastboot_flash_program(FAR struct fastboot_ctx_s *context, int fd)
}
chunk_num = sparse->total_chunks;
chunk_ptr += FASTBOOT_SPARSE_HEADER;
while (chunk_num--)
while (chunk_ptr < end_ptr && chunk_num--)
{
FAR struct fastboot_chunk_header_s *chunk =
(FAR struct fastboot_chunk_header_s *)chunk_ptr;