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Kernel: Handle mmap requests on zero-length data file inodes safely

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Liav A 2022-08-06 21:05:48 +03:00 • committed by Idan Horowitz
parent c88cc8557f
commit 3ad0e1a1d5
5 changed files with 28 additions and 5 deletions
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Kernel/Memory/SharedInodeVMObject.h
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@ -16,6 +16,7 @@ class SharedInodeVMObject final : public InodeVMObject {
public:
static ErrorOr<NonnullLockRefPtr<SharedInodeVMObject>> try_create_with_inode(Inode&);
static ErrorOr<NonnullLockRefPtr<SharedInodeVMObject>> try_create_with_inode_and_range(Inode&, u64 offset, size_t range_size);
virtual ErrorOr<NonnullLockRefPtr<VMObject>> try_clone() override;
ErrorOr<void> sync(off_t offset_in_pages = 0, size_t pages = -1);