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5870 commits

Author SHA1 Message Date
Andreas Kling
e6929835d2 Kernel: Make copy_time_from_user() helpers use KResultOr<Time> 
...and use TRY() for smooth error propagation everywhere.
 2021-09-07 01:18:02 +02:00
Nico Weber
62bc238ac3 Kernel: Let aarch64 port call into C++ 
Put all but the first core into a loop, make room for some stack,
and call init().
 2021-09-06 21:57:59 +01:00
Andreas Kling
2641a068dc Kernel: Don't try to allocate ProcessProcFSTraits in Process constructor 2021-09-06 20:38:56 +02:00
Andreas Kling
1c543598f1 Kernel: Use TRY() in ProcessProcFSTraits::to_inode() 2021-09-06 20:34:54 +02:00
Andreas Kling
bdb697f6de Kernel: Use TRY() in MemoryDevice::mmap() 2021-09-06 20:33:45 +02:00
Andreas Kling
d6fe5e1e5b Kernel/KCOV: Use TRY() in KCOVInstance::buffer_allocate() 2021-09-06 20:33:35 +02:00
Andreas Kling
0d44cdb7a2 Kernel: Wrap two VirtualFileSystem directory traversals in TRY() 2021-09-06 20:30:18 +02:00
Andreas Kling
1101994fad Kernel: Wrap ISO9660FS directory traversal in TRY() 2021-09-06 20:28:40 +02:00
Andreas Kling
a2bf8244fe Kernel: Use TRY() once more in LocalSocket::try_create_connected_pair() 2021-09-06 20:26:03 +02:00
Andreas Kling
704a2bfad5 Kernel: Use TRY() in TmpFSInode::write_bytes() 2021-09-06 20:24:38 +02:00
Andreas Kling
274d535d0e Kernel: Use TRY() in sys$module_load() and sys$module_unload() 2021-09-06 20:23:08 +02:00
Andreas Kling
56a2594de7 Kernel: Make KString factories return KResultOr + use TRY() everywhere 
There are a number of places that don't have an error propagation path
right now, so I've added FIXME's about that.
 2021-09-06 19:25:36 +02:00
Andreas Kling
69b9b2888c Kernel: Don't allocate so much when generating coredumps 
Instead of creating a bunch of ByteBuffers and concatenating them to
generate the "notes" segment, we now simply create a KBufferBuilder
and tell each of the notes generator helpers to write into the builder.

This allows the code to flow more naturally, with some bonus additional
error propagation. :^)
 2021-09-06 18:56:51 +02:00
Andreas Kling
9db8a14264 Kernel: Make SysFS and ProcFS generator functions return KResult 
This allows us to propagate a whole bunch of KBufferBuilder errors.
 2021-09-06 18:56:51 +02:00
Andreas Kling
2065ced8f6 Kernel: Make KBufferBuilder::append() & friends return KResult 
This allows callers to react to a failed append (due to OOM.)
 2021-09-06 18:56:51 +02:00
Andreas Kling
60eea6940f Kernel: Tidy up Coredump construction 
- Use KResultOr and TRY to propagate errors
- Return more specific errors now that they have a path out from here
 2021-09-06 18:56:51 +02:00
Andreas Kling
c11c0fe453 Kernel: Use TRY() in Coredump 2021-09-06 18:56:51 +02:00
Andreas Kling
f16b9a691f Kernel: Rename ProcessPagingScope => ScopedAddressSpaceSwitcher 2021-09-06 18:56:51 +02:00
Andreas Kling
cd8d52e6ae Kernel: Improve API names for switching address spaces 
- enter_space => enter_address_space
- enter_process_paging_scope => enter_process_address_space
 2021-09-06 18:56:51 +02:00
Andreas Kling
298cd57fe7 Kernel: Allocate signal trampoline before committing to a sys$execve() 
Once we commit to a new executable image in sys$execve(), we can no
longer return with an error to whoever called us from userspace.
We must make sure to surface any potential errors before that point.

This patch moves signal trampoline allocation before the commit.
A number of other things remain to be moved.
 2021-09-06 18:56:51 +02:00
Andreas Kling
6863d015ec Kernel: Use TRY() more in sys$execve() 
I just keep finding more and more places to make use of this. :^)
 2021-09-06 18:56:51 +02:00
Andreas Kling
009ea5013d Kernel: Use TRY() in find_elf_interpreter_for_executable() 2021-09-06 18:56:51 +02:00
Andreas Kling
511ebffd94 Kernel: Improve find_elf_interpreter_for_executable() parameter names 2021-09-06 18:56:51 +02:00
Andreas Kling
645e29a88b Kernel: Don't turn I/O errors during sys$execve() into ENOEXEC 
Instead, just propagate whatever the real error was.
 2021-09-06 13:06:05 +02:00
Andreas Kling
84addef10f Kernel: Improve arguments retrieval error propagation in sys$execve() 
Instead of turning any arguments related error into an EFAULT, we now
propagate the innermost error during arguments retrieval.
 2021-09-06 13:06:05 +02:00
Andreas Kling
6e3381ac32 Kernel: Use KResultOr and TRY() for {Shared,Private}InodeVMObject 2021-09-06 13:06:05 +02:00
Andreas Kling
e3a716ceff Kernel: Make Memory::Region::map() return KResult 
..and use TRY() at the call sites to propagate errors. :^)
 2021-09-06 13:06:05 +02:00
Andreas Kling
7981422500 Kernel: Make Threads always have a name 
We previously allowed Thread to exist in a state where its m_name was
null, and had to work around that in various places.

This patch removes that possibility and forces those who would create a
thread (or change the name of one) to provide a NonnullOwnPtr<KString>
with the name.
 2021-09-06 13:06:05 +02:00
Andreas Kling
cda2b9e71c Kernel: Improvements to Custody absolute path serialization 
- Renamed try_create_absolute_path() => try_serialize_absolute_path()
- Use KResultOr and TRY() to propagate errors
- Don't call this when it's only for debug logging
 2021-09-06 13:06:05 +02:00
Andreas Kling
f173f73f10 Kernel/USB: Use TRY() and adopt_nonnull_own_or_enomem() some more 2021-09-06 13:06:05 +02:00
Andreas Kling
e3b063581e Kernel: Use TRY() in sys$alarm() 2021-09-06 13:06:05 +02:00
Andreas Kling
b083b165a7 Kernel/Ext2FS: Wrap calls to traverse_as_directory() in TRY() 
Nothing says we can't TRY() a multi-line function call. :^)
 2021-09-06 13:06:05 +02:00
Andreas Kling
18dbafec85 Kernel: Use TRY() more in Plan9FS 2021-09-06 13:06:05 +02:00
Andreas Kling
d34f2b643e Kernel: Tidy up Plan9FS construction a bit 2021-09-06 13:06:05 +02:00
Andreas Kling
36725228fa Kernel: Tidy up Ext2FS construction a bit 2021-09-06 13:06:05 +02:00
Andreas Kling
47bfbe343b Kernel: Tidy up SysFS construction 
- Use KResultOr and TRY() to propagate errors
- Check for OOM errors
- Move allocation out of constructors

There's still a lot more to do here, as SysFS is still quite brittle
in the face of memory pressure.
 2021-09-06 13:06:05 +02:00
Andreas Kling
788b91a65c Kernel: Tidy up DevFS construction and handle OOM errorso 
- Use KResultOr and TRY() to propagate errors
- Check for OOM
- Move allocations out of the DevFS constructor
 2021-09-06 13:06:05 +02:00
Andreas Kling
efe4e230ee Kernel: Tidy up DevPtsFS construction and handle OOM errors 
- Use KResultOr and TRY() to propagate errors
- Check for OOM when creating new inodes
 2021-09-06 13:06:05 +02:00
Andreas Kling
f2512071f2 Kernel: Use TRY() in sys$getrandom() 2021-09-06 02:36:21 +02:00
Andreas Kling
a8516681b7 Kernel: Tidy up TmpFS and TmpFSInode construction 
- Use KResultOr<NonnullRefPtr<T>>
- Propagate errors
- Use TRY() at call sites
 2021-09-06 02:36:21 +02:00
Andreas Kling
398f8e7c96 Kernel: Use TRY() more in process-specific ProcFS code 2021-09-06 02:14:22 +02:00
Andreas Kling
f4a6b60570 Kernel: Use TRY() in Graphics::VirtIOGPU::FrameBufferDevice 2021-09-06 02:11:46 +02:00
Andreas Kling
17a12c8a30 Kernel: Use TRY() in FramebufferDevice 2021-09-06 02:10:01 +02:00
Andreas Kling
7a8061ba0c Kernel: Use TRY() in ISO9660FileSystem 2021-09-06 02:06:49 +02:00
Andreas Kling
a994f11f10 Kernel: Make AddressSpace::add_region() return KResultOr<Region*> 
This allows us to use TRY() in a few places.
 2021-09-06 02:02:06 +02:00
Andreas Kling
062cc804e7 Kernel: Use TRY() some more in Memory::AddressSpace 2021-09-06 01:59:30 +02:00
Andreas Kling
75564b4a5f Kernel: Make kernel region allocators return KResultOr<NOP<Region>> 
This expands the reach of error propagation greatly throughout the
kernel. Sadly, it also exposes the fact that we're allocating (and
doing other fallible things) in constructors all over the place.

This patch doesn't attempt to address that of course. That's work for
our future selves.
 2021-09-06 01:55:27 +02:00
Andreas Kling
cb71a73708 Kernel/USB: Tidy up UHCIDescriptorPool construction 
- Use KResultOr<NonnullRefPtr<UHCIDescriptorPool<T>>
- Make the constructor private
- Use TRY() at call sites
 2021-09-06 01:55:27 +02:00
Andreas Kling
91fe6b6552 Kernel/KCOV: Bring closer to typical SerenityOS coding style 
- Remove a bunch of redundant `this->`
- Make class data members private and provide accessors instead
 2021-09-06 01:55:27 +02:00
Andreas Kling
79fbad6df9 Kernel/USB: Tidy up USB::Transfer construction 2021-09-06 01:55:27 +02:00