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Kernel: Fix ext2 file write

This commit is contained in:
Bananymous 2023-09-11 01:20:39 +03:00
parent c55bb77ff5
commit aa59142bfa
1 changed files with 7 additions and 7 deletions
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14
kernel/kernel/FS/Ext2/Inode.cpp
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@ -227,7 +227,7 @@ namespace Kernel
const uint8_t* u8buffer = (const uint8_t*)buffer; const uint8_t* u8buffer = (const uint8_t*)buffer;
size_t written = 0; size_t to_write = count;
// Write partial block // Write partial block
if (offset % block_size) if (offset % block_size)
@ -236,7 +236,7 @@ namespace Kernel
uint32_t block_offset = offset % block_size; uint32_t block_offset = offset % block_size;
uint32_t data_block_index = TRY(this->data_block_index(block_index)); uint32_t data_block_index = TRY(this->data_block_index(block_index));
uint32_t to_copy = BAN::Math::min<uint32_t>(block_size - block_offset, written); uint32_t to_copy = BAN::Math::min<uint32_t>(block_size - block_offset, to_write);
m_fs.read_block(data_block_index, block_buffer.span()); m_fs.read_block(data_block_index, block_buffer.span());
memcpy(block_buffer.data() + block_offset, buffer, to_copy); memcpy(block_buffer.data() + block_offset, buffer, to_copy);
@ -244,10 +244,10 @@ namespace Kernel
u8buffer += to_copy; u8buffer += to_copy;
offset += to_copy; offset += to_copy;
written -= to_copy; to_write -= to_copy;
} }
while (written >= block_size) while (to_write >= block_size)
{ {
uint32_t data_block_index = TRY(this->data_block_index(offset / block_size)); uint32_t data_block_index = TRY(this->data_block_index(offset / block_size));
@ -255,15 +255,15 @@ namespace Kernel
u8buffer += block_size; u8buffer += block_size;
offset += block_size; offset += block_size;
written -= block_size; to_write -= block_size;
} }
if (written > 0) if (to_write > 0)
{ {
uint32_t data_block_index = TRY(this->data_block_index(offset / block_size)); uint32_t data_block_index = TRY(this->data_block_index(offset / block_size));
m_fs.read_block(data_block_index, block_buffer.span()); m_fs.read_block(data_block_index, block_buffer.span());
memcpy(block_buffer.data(), u8buffer, written); memcpy(block_buffer.data(), u8buffer, to_write);
m_fs.write_block(data_block_index, block_buffer.span()); m_fs.write_block(data_block_index, block_buffer.span());
} }