IPv4: More hacking on bringing up TCP support.

This was a bit more complicated than I expected, but it's moving forward.

1 files changed, 11 insertions, 6 deletions

diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index c749d06c98..2a5883ebdc 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -1073,6 +1073,7 @@ void Process::crash()
 {
     ASSERT_INTERRUPTS_DISABLED();
     ASSERT(state() != Dead);
+
     m_termination_signal = SIGSEGV;
     dump_regions();
     ASSERT(is_ring3());
@@ -2533,7 +2534,7 @@ ssize_t Process::sys$sendto(const Syscall::SC_sendto_params* params)
 
     if (!validate_read(data, data_length))
         return -EFAULT;
-    if (!validate_read(addr, addr_length))
+    if (addr && !validate_read(addr, addr_length))
         return -EFAULT;
     auto* descriptor = file_descriptor(sockfd);
     if (!descriptor)
@@ -2559,17 +2560,21 @@ ssize_t Process::sys$recvfrom(const Syscall::SC_recvfrom_params* params)
 
     if (!validate_write(buffer, buffer_length))
         return -EFAULT;
-    if (!validate_read_typed(addr_length))
-        return -EFAULT;
-    if (!validate_read(addr, *addr_length))
-        return -EFAULT;
+    if (addr_length) {
+        if (!validate_read_typed(addr_length))
+            return -EFAULT;
+        if (!validate_read(addr, *addr_length))
+            return -EFAULT;
+    } else if (addr) {
+       return -EINVAL;
+    }
     auto* descriptor = file_descriptor(sockfd);
     if (!descriptor)
         return -EBADF;
     if (!descriptor->is_socket())
         return -ENOTSOCK;
     auto& socket = *descriptor->socket();
-    kprintf("recvfrom %p (%u), flags=%u, addr: %p (%u)\n", buffer, buffer_length, flags, addr, *addr_length);
+    kprintf("recvfrom %p (%u), flags=%u, addr: %p (%p)\n", buffer, buffer_length, flags, addr, addr_length);
     return socket.recvfrom(buffer, buffer_length, flags, addr, addr_length);
 }