If the number of block groups exceeds 2**32, a bad cast would lead to
a bogus "Not enough space to build proposed filesystem while setting
up superblock" failure.
Signed-off-by: "Theodore Ts'o" <tytso@xxxxxxx>
---
lib/ext2fs/initialize.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/lib/ext2fs/initialize.c b/lib/ext2fs/initialize.c
index 2875f97..b050a0a 100644
--- a/lib/ext2fs/initialize.c
+++ b/lib/ext2fs/initialize.c
@@ -248,7 +248,7 @@ errcode_t ext2fs_initialize(const char *name, int flags,
}
retry:
- fs->group_desc_count = (blk_t) ext2fs_div64_ceil(
+ fs->group_desc_count = (dgrp_t) ext2fs_div64_ceil(
ext2fs_blocks_count(super) - super->s_first_data_block,
EXT2_BLOCKS_PER_GROUP(super));
if (fs->group_desc_count == 0) {
--
1.7.4.1.22.gec8e1.dirty
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