summaryrefslogtreecommitdiff
path: root/Kernel/FileSystem/RAMFS
diff options
context:
space:
mode:
authorLiav A <liavalb@gmail.com>2023-02-18 16:48:45 +0200
committerAndreas Kling <kling@serenityos.org>2023-02-19 01:01:45 +0100
commit4a14138230884083da616d7ddcc156dba5ff27de (patch)
tree848c5ef51311cbf2c86abf58fe833c07174171bd /Kernel/FileSystem/RAMFS
parent9790b81959fc31e0690380ef5c3b6e7e4a6b9802 (diff)
downloadserenity-4a14138230884083da616d7ddcc156dba5ff27de.zip
Kernel/FileSystem: Fix check of read offset for the RAMFSInode code
The check of ensuring we are not trying to read beyond the end of the inode data buffer is already there, it's just that we need to disallow further reading if the read offset equals to the inode data size.
Diffstat (limited to 'Kernel/FileSystem/RAMFS')
-rw-r--r--Kernel/FileSystem/RAMFS/Inode.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/Kernel/FileSystem/RAMFS/Inode.cpp b/Kernel/FileSystem/RAMFS/Inode.cpp
index 56f33b5b61..d2368d0b22 100644
--- a/Kernel/FileSystem/RAMFS/Inode.cpp
+++ b/Kernel/FileSystem/RAMFS/Inode.cpp
@@ -127,7 +127,7 @@ ErrorOr<size_t> RAMFSInode::read_bytes_from_content_space(size_t offset, size_t
{
VERIFY(m_inode_lock.is_locked());
VERIFY(m_metadata.size >= 0);
- if (static_cast<size_t>(m_metadata.size) < offset)
+ if (offset >= static_cast<size_t>(m_metadata.size))
return 0;
auto mapping_region = TRY(MM.allocate_kernel_region(DataBlock::block_size, "RAMFSInode Mapping Region"sv, Memory::Region::Access::Read, AllocationStrategy::Reserve));
return const_cast<RAMFSInode&>(*this).do_io_on_content_space(*mapping_region, offset, io_size, buffer, false);