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UserspaceEmulator: Add support for emulating SC_mount

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AnotherTest 2020-10-24 11:19:25 +03:30 • committed by Andreas Kling
parent 9afe9069a9
commit aee0df19c1
2 changed files with 17 additions and 0 deletions
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16
DevTools/UserspaceEmulator/Emulator.cpp
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@ -286,6 +286,8 @@ u32 Emulator::virt_syscall(u32 function, u32 arg1, u32 arg2, u32 arg3)
return virt$shbuf_set_volatile(arg1, arg2);
case SC_mmap:
return virt$mmap(arg1);
case SC_mount:
return virt$mount(arg1);
case SC_munmap:
return virt$munmap(arg1, arg2);
case SC_gettid:
@ -819,6 +821,20 @@ u32 Emulator::virt$mmap(u32 params_addr)
return final_address;
}
u32 Emulator::virt$mount(u32 params_addr)
{
Syscall::SC_mount_params params;
mmu().copy_from_vm(&params, params_addr, sizeof(params));
auto target = mmu().copy_buffer_from_vm((FlatPtr)params.target.characters, params.target.length);
auto fs_path = mmu().copy_buffer_from_vm((FlatPtr)params.fs_type.characters, params.fs_type.length);
params.fs_type.characters = (char*)fs_path.data();
params.fs_type.length = fs_path.size();
params.target.characters = (char*)target.data();
params.target.length = target.size();
return syscall(SC_mount, &params);
}
u32 Emulator::virt$gettid()
{
return gettid();