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libsparse: Limit block size to 64 MB

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Limit the block size to 64 MB before fastboot executable binary for
windows 64-bit is released.

Bug: 156057250
Change-Id: Ic4edb963a3d99f718d7630aba3f351729a84e994
This commit is contained in:
Woody Lin 2020-05-13 20:50:54 +08:00
parent a311f7866f
commit 39bdf397fa
1 changed files with 12 additions and 0 deletions
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12
libsparse/sparse.cpp
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@ -136,11 +136,23 @@ static int write_all_blocks(struct sparse_file* s, struct output_file* out) {
return 0;
}
/*
* This is a workaround for 32-bit Windows: Limit the block size to 64 MB before
* fastboot executable binary for windows 64-bit is released (b/156057250).
*/
#define MAX_BACKED_BLOCK_SIZE ((unsigned int) (64UL << 20))
int sparse_file_write(struct sparse_file* s, int fd, bool gz, bool sparse, bool crc) {
struct backed_block* bb;
int ret;
int chunks;
struct output_file* out;
for (bb = backed_block_iter_new(s->backed_block_list); bb; bb = backed_block_iter_next(bb)) {
ret = backed_block_split(s->backed_block_list, bb, MAX_BACKED_BLOCK_SIZE);
if (ret) return ret;
}
chunks = sparse_count_chunks(s);
out = output_file_open_fd(fd, s->block_size, s->len, gz, sparse, chunks, crc);