Commit Graph

26 Commits

Author SHA1 Message Date
2572695c8d
kernel: Support mapping shared memory using mmap() 2023-08-02 22:20:05 +02:00
af26dce038
kernel: Zero physical frames instead of virtual pages
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The memset() happens a bit earlier, and we don't have to remap the
mapped virtual memory.
2023-07-04 00:49:26 +02:00
9bab4c62a1
kernel: Compilation fixes
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2023-05-07 21:42:03 +02:00
72dadc6706
kernel: Define a constant to check for default memory access
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2023-05-07 21:38:38 +02:00
b25e212880
kernel: Make a generic function for checking memory flags
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2023-05-07 21:37:01 +02:00
95659639e5
kernel: Zero out allocated memory for userspace to avoid leaking sensitive data
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2023-04-17 20:11:07 +02:00
b6c35124d6
libluna: OwnedStringView -> String
Also with inline storage!
2023-03-29 17:28:22 +02:00
b9e8030aac
kernel: Free the initial ramdisk memory after copying everything into the VFS
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2023-03-16 23:02:53 +01:00
02dbcbbfa1
kernel: Add strdup_from_user()
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2023-03-12 16:30:36 +01:00
8df441064f
x86_64/MMU: Map the physical address space using huge pages 2023-02-27 12:47:17 +01:00
6e4cd6300d
Kernel: Add copy_from_user() and copy_from_user_typed()
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2023-01-11 19:25:28 +01:00
29bd8a69fa
MemoryManager: Add helper functions to validate arbitrary ranges of userspace memory 2023-01-07 01:39:33 +01:00
6e9b4491a6
MemoryManager: Add copy_to_user() and copy_to_user_typed() 2023-01-07 00:17:16 +01:00
caa3fe8c45
MemoryManager: Add validate_userspace_string()
A bit crude, should be replaced by a strdup_from_user() helper to avoid touching userspace memory directly.
But it'll do for now.
2023-01-05 22:39:09 +01:00
c53bba0392
MemoryManager: Add an unmap_weak_and_free_vm() helper function
This function mirrors unmap_owned_and_free_vm(), but using weak unmapping (does not free the underlying physical memory)
2023-01-05 21:50:06 +01:00
5854e5e530
Add newlines at end-of-file 2023-01-02 13:07:29 +01:00
6ff92b1714
MemoryManager: Add get_kernel_mapping_for_frames()
This function allocates a continuous range of VM and maps the physical frames passed to said VM range.
2022-12-23 11:30:49 +01:00
cedcfa9c63
Improve cleanup on MemoryManager failure + add methods that use KernelVM
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2022-12-16 19:36:38 +01:00
1ebd892c16
Convert uses of u64 to usize
Not all of them, but if you're measuring a size it's more appropriate to use usize than u64.
2022-12-07 10:55:47 +01:00
c7ab6bc2d3
Reorganize the luna/ directory so that headers aren't in the top level include path 2022-12-04 12:42:43 +01:00
fe47e0d5cb Clean init() up 2022-11-30 16:30:42 +01:00
af267772f0 Rename MemoryManager::map to map_frames_at
To make it clearer that this API is only intented for mapping contiguous frames of physical memory (for MMIO perhaps?)
2022-11-19 22:32:48 +01:00
1b41a3e9cf Introduce a few helpers to allocate/map/unmap several pages, which wrap around the MMU functionality 2022-11-19 22:28:45 +01:00
d96cb73995 Rename physical "pages" to "frames"
AFAIK, this is the proper naming scheme. "Pages" are virtual, and "frames" physical.
2022-11-19 22:27:08 +01:00
047f445651 Kernel: Add helpers to validate memory addresses 2022-11-19 18:38:47 +01:00
70c6b78e35 Organize source tree 2022-11-19 17:59:49 +01:00