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UserspaceEmulator: Add the get_dir_entries() syscall + an ioctl() stub

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This commit is contained in:
Andreas Kling 2020-07-18 17:36:31 +02:00
parent e4b068aec5
commit a49c794725
2 changed files with 25 additions and 0 deletions
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23
DevTools/UserspaceEmulator/Emulator.cpp
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@ -226,6 +226,10 @@ u32 Emulator::virt_syscall(u32 function, u32 arg1, u32 arg2, u32 arg3)
dbgprintf("Syscall: %s (%x)\n", Syscall::to_string((Syscall::Function)function), function);
#endif
switch (function) {
case SC_ioctl:
return virt$ioctl(arg1, arg2, arg3);
case SC_get_dir_entries:
return virt$get_dir_entries(arg1, arg2, arg3);
case SC_usleep:
return virt$usleep(arg1);
case SC_shbuf_create:
@ -779,4 +783,23 @@ ssize_t Emulator::virt$getrandom(FlatPtr buffer, size_t buffer_size, unsigned in
return rc;
}
int Emulator::virt$get_dir_entries(int fd, FlatPtr buffer, ssize_t size)
{
auto host_buffer = ByteBuffer::create_uninitialized(size);
int rc = syscall(SC_get_dir_entries, fd, host_buffer.data(), host_buffer.size());
if (rc < 0)
return rc;
mmu().copy_to_vm(buffer, host_buffer.data(), host_buffer.size());
return rc;
}
int Emulator::virt$ioctl(int fd, unsigned request, FlatPtr arg)
{
(void)fd;
(void)arg;
dbg() << "Unsupported ioctl: " << request;
dump_backtrace();
TODO();
}
}