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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
View file

@ -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); dbgprintf("Syscall: %s (%x)\n", Syscall::to_string((Syscall::Function)function), function);
#endif #endif
switch (function) { 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: case SC_usleep:
return virt$usleep(arg1); return virt$usleep(arg1);
case SC_shbuf_create: case SC_shbuf_create:
@ -779,4 +783,23 @@ ssize_t Emulator::virt$getrandom(FlatPtr buffer, size_t buffer_size, unsigned in
return rc; return rc;
} }
int Emulator::virt$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();
}
} }

2
DevTools/UserspaceEmulator/Emulator.h
View file

@ -68,6 +68,8 @@ private:
void setup_stack(const Vector<String>& arguments); void setup_stack(const Vector<String>& arguments);
int virt$get_dir_entries(int fd, FlatPtr buffer, ssize_t);
int virt$ioctl(int fd, unsigned, FlatPtr);
int virt$usleep(useconds_t); int virt$usleep(useconds_t);
int virt$shbuf_create(int size, FlatPtr buffer); int virt$shbuf_create(int size, FlatPtr buffer);
int virt$shbuf_allow_pid(int, pid_t peer_pid); int virt$shbuf_allow_pid(int, pid_t peer_pid);