Start working on a VFS implementation #22

Closed

apio wants to merge 44 commits from oop-vfs into main

pull from: oop-vfs

merge into: apio:main

apio:main

apio:stable

apio:new-layout

Conversation 6 Commits 44 Files Changed 75 +853 -235

44 Commits

Author	SHA1	Message	Date
apio	eebbbf0b16	luna -> libluna	2023-02-27 15:19:18 +01:00
apio	32dc5473a5	TmpFS: Use StaticString<128> instead of char[128]	2023-02-27 15:14:07 +01:00
apio	76f9bd8112	luna: Add StaticString, an OOP char[]	2023-02-27 15:13:23 +01:00
apio	55b430a4fd	TmpFS: Use a fixed char array in DirInode's Entry instead of OwnedStringView	2023-02-27 15:04:29 +01:00
apio	19b72fe779	luna: Add strlcpy()	2023-02-27 15:03:22 +01:00
apio	ec146caeea	Vector: Fix try_append (hopefully) ... Still doesn't work with OwnedStringViews inside of structs.	2023-02-27 15:02:55 +01:00
apio	7f1884213a	InitRD: Use MMU::translate_physical_address instead of allocating VM ... This one is a perfect candidate, since we're just mapping a fixed continuous range of physical memory to virtual memory.	2023-02-27 13:31:36 +01:00
apio	3654cc5bee	MemoryManager: Initialize KernelVM at the end of init() ... KernelVM is not needed for MMU's init process anymore.	2023-02-27 13:31:36 +01:00
apio	a0252e42a4	x86_64: Remove recursive mapping related things from MMU.h	2023-02-27 13:31:36 +01:00
apio	2038ee1929	x86_64/MMU: Do not allocate level 1 page tables for huge page entries ... This would leak memory, since we would never end up using them.	2023-02-27 13:31:36 +01:00
apio	9af6a3f30f	MemoryManager: Reuse the existing mapping of physical memory that MMU has	2023-02-27 13:31:36 +01:00
apio	ff01f49b41	x86_64/MMU: Map the physical address space using huge pages	2023-02-27 13:31:35 +01:00
apio	efdd64736f	x86_64: Allow mapping huge pages, but don't do it yet	2023-02-27 13:31:35 +01:00
apio	9da5204079	x86_64/MMU: Copy from the mapped kernel directory instead of the physical version	2023-02-27 13:31:35 +01:00
apio	78cea0a47e	x86_64/MMU: Map all physical memory into the higher half instead of using recursive mapping ... This still has a few problems. Notably, we are not using huge pages for this mapping, which would be a lot more efficient. Right now, used memory is 8.1 MiB at boot for a 256MiB system. But after improving it, this system will be much better than recursive mapping. fork() will be MUCH easier to implement, for example.	2023-02-27 13:31:35 +01:00
apio	5b43345b7d	kernel: Implement creating file inodes in tmpfs directories	2023-02-25 19:22:05 +01:00
apio	9248a5b3cc	tmpfs: make the root inode a DirInode instead of a FileInode	2023-02-25 19:08:55 +01:00
apio	cca4743a51	tmpfs: add DirInode skeleton	2023-02-25 19:06:50 +01:00
apio	0635f1c243	Update README.md with realism	2023-02-25 18:19:00 +01:00
apio	b71d899b52	tmpfs: rename tmpfs::Inode to tmpfs::FileInode	2023-02-25 18:11:39 +01:00
apio	05b627d037	tmpfs: Make m_next_inode_number atomic	2023-02-25 18:06:23 +01:00
apio	6daad7787a	kernel: Rename FileSystem::root() to root_inode() and add a shortcut for the root filesystem's root inode	2023-02-25 18:05:25 +01:00
apio	ddc4692671	kernel: Make a factory function for filesystem creation of inodes, and add inode numbers ... Now every filesystem must provide fs->create_file_inode() for new inodes :)	2023-02-25 18:03:11 +01:00
apio	5edd316198	kernel: Add a subclass of VFS::Inode to make it easier to implement file inodes	2023-02-25 17:54:01 +01:00
apio	045efc7046	kernel, luna: Port non-VFS changes over from pull request #22 ... OwnedPtr, SharedPtr: Add operator bool Option, Result: Make try_move_value() non-const since it modifies the Option kernel: Switch to a stack we control for the main task as soon as we leave early boot Heap: Fix GPF caused when making many small allocations Heap: Avoid accessing a block after it's potentially deleted luna: Skip UBSAN.cpp in CMakeLists as that's not implemented yet luna: Use spinlocks in the heap implementation kernel, luna: Move Spinlock.h to luna Option: Use __builtin_launder to ensure that the compiler doesn't label this as UB SharedPtr: Implement make_shared using adopt_shared SharedPtr: Delete ptr on failure in all adopt_shared* functions	2023-02-25 17:47:58 +01:00
apio	6fc02e042a	SharedPtr: Implement make_shared using adopt_shared	2023-02-25 17:45:41 +01:00
apio	620810d720	SharedPtr: Delete ptr on failure in all adopt_shared* functions	2023-02-25 17:45:41 +01:00
apio	32ada00b72	kernel: Add a guard page to the bootstrap stack so that we can catch more stack overflows	2023-02-25 17:45:41 +01:00
apio	dc795ff491	luna: Introduce fail(...), a replacement for expect(false, ...)	2023-02-25 17:45:40 +01:00
apio	5f6a659fa1	kernel: Enable UBSAN when building in debug mode	2023-02-25 17:45:40 +01:00
apio	d82b3f809b	luna: Add UB sanitizer, for both kernel-space and userspace	2023-02-25 17:45:40 +01:00
apio	96a213ec5c	libc: Make dbgln() also print a newline in userspace ... Previously, dbgln() only printed a newline in kernel-space.	2023-02-25 17:45:40 +01:00
apio	e9e1bef89c	OwnedPtr, SharedPtr: Add operator bool	2023-02-25 16:27:36 +01:00
apio	ae22321648	Option, Result: Make try_move_value() non-const since it modifies the Option	2023-02-25 16:22:11 +01:00
apio	d842443869	kernel: Switch to a stack we control for the main task as soon as we leave early boot ... This is probably pointless as the main task only exists up until the point where the Scheduler starts running, but some init code was running into a stack overflow due to the fact that we only had one bootloader-provided page of stack. This should probably be changed afterwards.	2023-02-18 00:18:42 +01:00
apio	37bbc04719	Heap: Fix GPF caused when making many small allocations ... Apparently space was too tight to split(), but we did it anyways, corrupting the next block. This patch fixes this behavior.	2023-02-17 22:47:15 +01:00
apio	4697a16206	Heap: Avoid accessing a block after it's potentially deleted	2023-02-14 20:17:31 +01:00
apio	08d5d727ee	luna: Skip UBSAN.cpp in CMakeLists as that's not implemented yet	2023-02-14 20:10:02 +01:00
apio	38bd3d3eef	luna: Use spinlocks in the heap implementation	2023-02-14 20:07:30 +01:00
apio	4e88a7482c	kernel, luna: Move Spinlock.h to luna	2023-02-14 20:05:00 +01:00
apio	6eff41e7af	Option: Use __builtin_launder to ensure that the compiler doesn't label this as UB	2023-02-14 20:03:29 +01:00
apio	79078ff21e	SharedPtr: Implement make_shared using adopt_shared	2023-02-14 19:59:44 +01:00
apio	cb4246b98d	kernel: Start working on a VFS implementation using OOP and SharedPtr	2023-02-03 22:20:00 +01:00
apio	51024f879d	SharedPtr: Delete ptr on failure in all adopt_shared* functions	2023-02-03 22:20:00 +01:00