Add network syscalls

services/libs/jinux-std/src/syscall/getsockname.rs

@@ -0,0 +1,21 @@
+use crate::fs::file_table::FileDescripter;
+use crate::log_syscall_entry;
+use crate::prelude::*;
+use crate::util::write_socket_addr_to_user;
+
+use super::SyscallReturn;
+use super::SYS_GETSOCKNAME;
+
+pub fn sys_getsockname(sockfd: FileDescripter, addr: Vaddr, addrlen: u32) -> Result<SyscallReturn> {
+    log_syscall_entry!(SYS_GETSOCKNAME);
+    debug!("sockfd = {sockfd}, addr = 0x{addr:x}, addrlen = {addrlen}");
+    let socket_addr = {
+        let current = current!();
+        let file_table = current.file_table().lock();
+        let socket = file_table.get_socket(sockfd)?;
+        socket.addr()?
+    };
+    // FIXME: trunscate write len if addrlen is not big enough
+    write_socket_addr_to_user(&socket_addr, addr, addrlen as usize)?;
+    Ok(SyscallReturn::Return(0))
+}