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Kernel: Fix ext2 small link deallocation 

Also fix deallocation bug
This commit is contained in:
Bananymous 2023-10-30 15:34:25 +02:00
parent 0c590821ed
commit 35f8f44510
1 changed files with 5 additions and 1 deletions
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6
kernel/kernel/FS/Ext2/Inode.cpp
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@ -274,6 +274,9 @@ namespace Kernel
{ {
ASSERT(m_inode.links_count == 0); ASSERT(m_inode.links_count == 0);
if (mode().iflnk() && (size_t)size() < sizeof(m_inode.block))
goto done;
// cleanup direct blocks // cleanup direct blocks
for (uint32_t i = 0; i < 12; i++) for (uint32_t i = 0; i < 12; i++)
if (m_inode.block[i]) if (m_inode.block[i])
@ -287,6 +290,7 @@ namespace Kernel
if (m_inode.block[14]) if (m_inode.block[14])
cleanup_indirect_block(m_inode.block[14], 3); cleanup_indirect_block(m_inode.block[14], 3);
done:
// mark blocks as deleted // mark blocks as deleted
memset(m_inode.block, 0x00, sizeof(m_inode.block)); memset(m_inode.block, 0x00, sizeof(m_inode.block));
@ -759,7 +763,7 @@ needs_new_block:
if (data_block_index < indices_per_fs_block * indices_per_fs_block) if (data_block_index < indices_per_fs_block * indices_per_fs_block)
return TRY(allocate_new_block_to_indirect_block(m_inode.block[13], data_block_index, 2)); return TRY(allocate_new_block_to_indirect_block(m_inode.block[13], data_block_index, 2));
data_block_index -= indices_per_fs_block; data_block_index -= indices_per_fs_block * indices_per_fs_block;
if (data_block_index < indices_per_fs_block * indices_per_fs_block * indices_per_fs_block) if (data_block_index < indices_per_fs_block * indices_per_fs_block * indices_per_fs_block)
return TRY(allocate_new_block_to_indirect_block(m_inode.block[14], data_block_index, 3)); return TRY(allocate_new_block_to_indirect_block(m_inode.block[14], data_block_index, 3));