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Kernel: Make Process::allocate_region*() return KResultOr<Region*>

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This allows region allocation to return specific errors and we don't
have to assume every failure is an ENOMEM.
This commit is contained in:
Andreas Kling 2021-01-15 17:27:52 +01:00
parent 7899e14e72
commit 64b0d89335
10 changed files with 70 additions and 79 deletions
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6
Kernel/Devices/MBVGADevice.cpp
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@ -61,7 +61,7 @@ KResultOr<Region*> MBVGADevice::mmap(Process& process, FileDescription&, Virtual
auto vmobject = AnonymousVMObject::create_for_physical_range(m_framebuffer_address, framebuffer_size_in_bytes());
if (!vmobject)
return KResult(-ENOMEM);
auto* region = process.allocate_region_with_vmobject(
return process.allocate_region_with_vmobject(
preferred_vaddr,
framebuffer_size_in_bytes(),
vmobject.release_nonnull(),
@ -69,10 +69,6 @@ KResultOr<Region*> MBVGADevice::mmap(Process& process, FileDescription&, Virtual
"MBVGA Framebuffer",
prot,
shared);
if (!region)
return KResult(-ENOMEM);
dbgln("MBVGADevice: mmap with size {} at {}", region->size(), region->vaddr());
return region;
}
int MBVGADevice::ioctl(FileDescription&, unsigned request, FlatPtr arg)