From: Benjamin Lim <[email protected]>
Signed-off-by: Benjamin Lim <[email protected]>
---
fs/ext4/ext4_common.c | 19 +++++++++++++++----
1 file changed, 15 insertions(+), 4 deletions(-)
diff --git a/fs/ext4/ext4_common.c b/fs/ext4/ext4_common.c
index 67e2471bd3..8638ef3b68 100644
--- a/fs/ext4/ext4_common.c
+++ b/fs/ext4/ext4_common.c
@@ -1584,7 +1584,7 @@ static int ext4fs_blockgroup
int ext4fs_read_inode(struct ext2_data *data, int ino, struct ext2_inode
*inode)
{
- struct ext2_block_group blkgrp;
+ struct ext2_block_group *blkgrp;
struct ext2_sblock *sblock = &data->sblock;
struct ext_filesystem *fs = get_fs();
int log2blksz = get_fs()->dev_desc->log2blksz;
@@ -1592,17 +1592,28 @@ int ext4fs_read_inode(struct ext2_data *data, int ino,
struct ext2_inode *inode)
long int blkno;
unsigned int blkoff;
+ /* Allocate blkgrp based on gdsize (for 64-bit support). */
+ blkgrp = zalloc(get_fs()->gdsize);
+ if (!blkgrp)
+ return 0;
+
/* It is easier to calculate if the first inode is 0. */
ino--;
status = ext4fs_blockgroup(data, ino / le32_to_cpu
- (sblock->inodes_per_group), &blkgrp);
- if (status == 0)
+ (sblock->inodes_per_group), blkgrp);
+ if (status == 0) {
+ free(blkgrp);
return 0;
+ }
inodes_per_block = EXT2_BLOCK_SIZE(data) / fs->inodesz;
- blkno = ext4fs_bg_get_inode_table_id(&blkgrp, fs) +
+ blkno = ext4fs_bg_get_inode_table_id(blkgrp, fs) +
(ino % le32_to_cpu(sblock->inodes_per_group)) / inodes_per_block;
blkoff = (ino % inodes_per_block) * fs->inodesz;
+
+ /* Free blkgrp as it is no longer required. */
+ free(blkgrp);
+
/* Read the inode. */
status = ext4fs_devread((lbaint_t)blkno << (LOG2_BLOCK_SIZE(data) -
log2blksz), blkoff,
--
2.17.1
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