RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-15 09:24:57 +00:00
Code Issues Activity Actions

UserspaceEmulator: Fix bogus use of "errno" in shbuf related syscalls

Browse source 
When we're making direct syscalls, there's no "errno" involved.
Thanks to Sergey for spotting these.
This commit is contained in:
Andreas Kling 2020-07-15 23:43:38 +02:00
parent 092f643119
commit 1873b8f3e4
1 changed files with 2 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

4
DevTools/UserspaceEmulator/Emulator.cpp
View file

@ -308,7 +308,7 @@ int Emulator::virt$shbuf_create(int size, FlatPtr buffer)
u8* host_data = nullptr;
int shbuf_id = syscall(SC_shbuf_create, size, &host_data);
if (shbuf_id < 0)
return -errno;
return shbuf_id;
FlatPtr address = allocate_vm(size, PAGE_SIZE);
auto region = SharedBufferRegion::create_with_shbuf_id(address, size, shbuf_id, host_data);
m_mmu.add_region(move(region));
@ -321,7 +321,7 @@ FlatPtr Emulator::virt$shbuf_get(int shbuf_id, FlatPtr size_ptr)
size_t host_size = 0;
void* host_data = (void*)syscall(SC_shbuf_get, shbuf_id, &host_size);
if (host_data == (void*)-1)
return -errno;
return (FlatPtr)host_data;
FlatPtr address = allocate_vm(host_size, PAGE_SIZE);
auto region = SharedBufferRegion::create_with_shbuf_id(address, host_size, shbuf_id, (u8*)host_data);
m_mmu.add_region(move(region));