beenull/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2024-11-29 19:10:26 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 7

UserspaceEmulator: Implement the accept() and setsockopt() syscalls

Browse source 
It's now possible to run LookupServer in UE (by setting up SystemServer
to run the service inside UE.) No bugs found, but very cool! :^)
This commit is contained in:
Andreas Kling 2020-07-27 16:28:25 +02:00
parent f097ed6ada
commit 368cea4094
Notes: sideshowbarker 2024-07-19 04:34:05 +09:00 
Author: https://github.com/awesomekling
Commit: https://github.com/SerenityOS/serenity/commit/368cea40947
2 changed files with 37 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

36
DevTools/UserspaceEmulator/Emulator.cpp
View file

@ -316,6 +316,10 @@ u32 Emulator::virt_syscall(u32 function, u32 arg1, u32 arg2, u32 arg3)
return virt$dbgputch(arg1);
case SC_fchmod:
return virt$fchmod(arg1, arg2);
case SC_accept:
return virt$accept(arg1, arg2, arg3);
case SC_setsockopt:
return virt$setsockopt(arg1);
case SC_bind:
return virt$bind(arg1, arg2, arg3);
case SC_connect:
@ -343,7 +347,7 @@ u32 Emulator::virt_syscall(u32 function, u32 arg1, u32 arg2, u32 arg3)
return virt$getrandom(arg1, arg2, arg3);
default:
warn() << "Unimplemented syscall: " << Syscall::to_string((Syscall::Function)function);
dbg() << "Unimplemented syscall: " << Syscall::to_string((Syscall::Function)function);
dump_backtrace();
TODO();
}
@ -456,6 +460,36 @@ int Emulator::virt$fchmod(int fd, mode_t mode)
return syscall(SC_fchmod, fd, mode);
}
int Emulator::virt$setsockopt(FlatPtr params_addr)
{
Syscall::SC_setsockopt_params params;
mmu().copy_from_vm(&params, params_addr, sizeof(params));
if (params.option == SO_RCVTIMEO) {
auto host_value_buffer = ByteBuffer::create_zeroed(params.value_size);
mmu().copy_from_vm(host_value_buffer.data(), (FlatPtr)params.value, params.value_size);
int rc = setsockopt(params.sockfd, params.level, SO_RCVTIMEO, host_value_buffer.data(), host_value_buffer.size());
if (rc < 0)
return -errno;
return rc;
}
TODO();
}
int Emulator::virt$accept(int sockfd, FlatPtr address, FlatPtr address_length)
{
socklen_t host_address_length = 0;
mmu().copy_from_vm(&host_address_length, address_length, sizeof(host_address_length));
auto host_buffer = ByteBuffer::create_zeroed(host_address_length);
int rc = syscall(SC_accept, sockfd, host_buffer.data(), &host_address_length);
if (rc < 0)
return rc;
mmu().copy_to_vm(address, host_buffer.data(), min((socklen_t)host_buffer.size(), host_address_length));
mmu().copy_to_vm(address_length, &host_address_length, sizeof(host_address_length));
return rc;
}
int Emulator::virt$bind(int sockfd, FlatPtr address, socklen_t address_length)
{
auto buffer = mmu().copy_buffer_from_vm(address, address_length);

2
DevTools/UserspaceEmulator/Emulator.h
View file

@ -113,7 +113,9 @@ private:
int virt$lseek(int fd, off_t offset, int whence);
int virt$socket(int, int, int);
int virt$getsockopt(FlatPtr);
int virt$setsockopt(FlatPtr);
int virt$select(FlatPtr);
int virt$accept(int sockfd, FlatPtr address, FlatPtr address_length);
int virt$bind(int sockfd, FlatPtr address, socklen_t address_length);
int virt$recvfrom(FlatPtr);
int virt$connect(int sockfd, FlatPtr address, socklen_t address_size);