Sergey Bugaev
cfdbb712fb
Kernel: Fix failing in can_read()/can_write()
...
Now that the SystemMonitor queries which open files can be read and written to,
having can_read()/can_write() unconditionally call ASSERT_NOT_REACHED() leads
to system crashes when inspecting the WindowServer.
Instead, just return true from can_read()/can_write() (indicating that the
read()/write() syscalls should not block) and return -EINVAL when trying to
actually read from or write to these devices.
2019-11-13 16:37:04 +01:00
Andreas Kling
1b2ef8582c
Kernel: Make File's can_read/can_write take a const FileDescription&
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Asking a File if we could possibly read or write it will never mutate
the asking FileDescription&, so it should be const.
2019-11-04 14:03:14 +01:00
Andreas Kling
345086ab72
BXVGADevice: Log a debug message whenever the resolution changes
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Fixes #618 .
2019-10-02 17:16:46 +02:00
Andreas Kling
e29fd3cd20
Kernel: Display virtual addresses as V%p instead of L%x
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The L was a leftover from when these were called linear addresses.
2019-08-26 11:31:58 +02:00
Conrad Pankoff
3932dfbb04
Kernel: Implement generic framebuffer ioctls in BXVGA
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This also hides some functions that were previously public, since that
same functionality is now exposed via ioctl functions.
2019-08-18 07:40:02 +02:00
Conrad Pankoff
53ddbce0b3
Kernel: Use established device name and number for framebuffer
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This is to prepare for other framebuffer implementations, for which it
would be inappropriate to use the /dev/bxvga device name.
2019-08-12 12:56:55 +02:00
Andreas Kling
6bdb81ad87
Kernel: Split VMObject into two classes: Anonymous- and InodeVMObject
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InodeVMObject is a VMObject with an underlying Inode in the filesystem.
AnonymousVMObject has no Inode.
I'm happy that InodeVMObject::inode() can now return Inode& instead of
VMObject::inode() return Inode*. :^)
2019-08-07 18:09:32 +02:00
Andreas Kling
bf8d72f5a4
Kernel: Remove unnecessary use of LibDraw.
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BXVGADevice was using a Size object for its framebuffer size. We shouldn't
be pulling in userspace code in the kernel like this, even if it's just
headers. :^)
2019-07-18 10:36:26 +02:00
Andreas Kling
27f699ef0c
AK: Rename the common integer typedefs to make it obvious what they are.
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These types can be picked up by including <AK/Types.h>:
* u8, u16, u32, u64 (unsigned)
* i8, i16, i32, i64 (signed)
2019-07-03 21:20:13 +02:00
Andreas Kling
e42c3b4fd7
Kernel: Rename LinearAddress => VirtualAddress.
2019-06-07 12:56:50 +02:00
Andreas Kling
bc951ca565
Kernel: Run clang-format on everything.
2019-06-07 11:43:58 +02:00
Andreas Kling
08cd75ac4b
Kernel: Rename FileDescriptor to FileDescription.
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After reading a bunch of POSIX specs, I've learned that a file descriptor
is the number that refers to a file description, not the description itself.
So this patch renames FileDescriptor to FileDescription, and Process now has
FileDescription* file_description(int fd).
2019-06-07 09:36:51 +02:00
Andreas Kling
5e1c7cb32c
Kernel: Memory-mapped files now have the absolute path as their name.
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It's generated when the mapping is first created, so it won't update if
the file moves. Maybe that's something we should support, too.
2019-06-02 10:14:28 +02:00
Andreas Kling
baaede1bf9
Kernel: Make the Process allocate_region* API's understand "int prot".
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Instead of having to inspect 'prot' at every call site, make the Process
API's take care of that so we can just pass it through.
2019-05-30 16:14:37 +02:00
Andreas Kling
66c1a9be3b
Kernel: Pass 'prot' argument to File::mmap() and act on it.
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Nothing crazy, this just means that PROT_READ allocates readable regions,
and that PROT_WRITE allocates writable ones.
2019-05-30 12:38:35 +02:00
Andreas Kling
8cbb7f101f
Kernel: Have File virtuals take a FileDescriptor& rather than a Process&.
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This will allow us to implement different behaviors depending on the role
of the descriptor a File is being accessed through.
2019-04-29 13:58:40 +02:00
Andreas Kling
e886337a67
Kernel: Make ProcessTracer inherit from File.
2019-04-28 15:02:55 +02:00
Andreas Kling
b9738fa8ac
Kernel: Move VM-related files into Kernel/VM/.
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Also break MemoryManager.{cpp,h} into one file per class.
2019-04-03 15:13:07 +02:00
Andreas Kling
ab43658c55
Kernel: Move devices into Kernel/Devices/.
2019-04-03 12:36:40 +02:00
