implement SocketFile. pass socket test

src/libos/src/entry.rs

@@ -64,7 +64,7 @@ fn parse_arguments(
 
 // TODO: make sure do_boot can only be called once
 fn do_boot(path_str: &str, argv: &Vec<CString>) -> Result<(), Error> {
-    info!("boot: path: {:?}, argv: {:?}", path_str, argv);
+//    info!("boot: path: {:?}, argv: {:?}", path_str, argv);
     util::mpx_util::mpx_enable()?;
 
     let envp = std::vec::Vec::new();

src/libos/src/errno.rs

@@ -39,6 +39,7 @@ impl fmt::Display for Error {
 }
 
 #[derive(Clone, Copy, Debug, PartialEq)]
+#[repr(u8)]
 pub enum Errno {
     EUNDEF = 0,
     EPERM = 1,
@@ -86,6 +87,14 @@ impl Errno {
     pub fn as_retval(&self) -> i32 {
         -(*self as i32)
     }
+    pub fn from_retval(ret: i32) -> Self {
+        let ret = if ret <= 0 && ret >= -39 {
+            (-ret) as u8
+        } else {
+            0
+        };
+        unsafe { core::mem::transmute(ret) }
+    }
 }
 
 impl fmt::Display for Errno {

src/libos/src/fs/file.rs

@@ -3,8 +3,9 @@ use std;
 use std::borrow::BorrowMut;
 use std::fmt;
 use std::io::SeekFrom;
+use std::any::Any;
 
-pub trait File: Debug + Sync + Send {
+pub trait File: Debug + Sync + Send + Any {
     fn read(&self, buf: &mut [u8]) -> Result<usize, Error>;
     fn write(&self, buf: &[u8]) -> Result<usize, Error>;
     fn read_at(&self, offset: usize, buf: &mut [u8]) -> Result<usize, Error>;
@@ -17,6 +18,7 @@ pub trait File: Debug + Sync + Send {
     fn sync_all(&self) -> Result<(), Error>;
     fn sync_data(&self) -> Result<(), Error>;
     fn read_entry(&self) -> Result<String, Error>;
+    fn as_any(&self) -> &Any { unimplemented!() }
 }
 
 pub type FileRef = Arc<Box<File>>;

src/libos/src/fs/mod.rs

@@ -9,12 +9,14 @@ use super::*;
 pub use self::file::{File, FileRef, SgxFile, StdinFile, StdoutFile};
 pub use self::file_table::{FileDesc, FileTable};
 pub use self::inode_file::{INodeExt, INodeFile, ROOT_INODE};
+pub use self::socket_file::SocketFile;
 use self::inode_file::OpenOptions;
 pub use self::pipe::Pipe;
 
 mod file;
 mod file_table;
 mod inode_file;
+mod socket_file;
 mod pipe;
 mod sgx_impl;
 
@@ -206,6 +208,7 @@ pub fn do_getdents64(fd: FileDesc, buf: &mut [u8]) -> Result<usize, Error> {
 }
 
 pub fn do_close(fd: FileDesc) -> Result<(), Error> {
+    info!("close: fd: {}", fd);
     let current_ref = process::get_current();
     let current_process = current_ref.lock().unwrap();
     let file_table_ref = current_process.get_files();

src/libos/src/fs/socket_file.rs

@@ -0,0 +1,110 @@
+use super::*;
+use std::any::Any;
+
+/// Native Linux socket
+#[derive(Debug)]
+pub struct SocketFile {
+    fd: c_int,
+}
+
+impl SocketFile {
+    pub fn new(domain: c_int, socket_type: c_int, protocol: c_int) -> Result<Self, Error> {
+        let ret = unsafe { libc::ocall::socket(domain, socket_type, protocol) };
+        if ret < 0 {
+            Err(Error::new(Errno::from_retval(ret as i32), ""))
+        } else {
+            Ok(SocketFile { fd: ret })
+        }
+    }
+
+    pub fn accept(
+        &self,
+        addr: *mut libc::sockaddr,
+        addr_len: *mut libc::socklen_t,
+        flags: c_int,
+    ) -> Result<Self, Error> {
+        let ret = unsafe { libc::ocall::accept4(self.fd, addr, addr_len, flags) };
+        if ret < 0 {
+            Err(Error::new(Errno::from_retval(ret as i32), ""))
+        } else {
+            Ok(SocketFile { fd: ret })
+        }
+    }
+
+    pub fn fd(&self) -> c_int {
+        self.fd
+    }
+}
+
+impl Drop for SocketFile {
+    fn drop(&mut self) {
+        let ret = unsafe { libc::ocall::close(self.fd) };
+        if ret < 0 {
+            warn!("socket (host fd: {}) close failed", self.fd);
+        }
+    }
+}
+
+impl File for SocketFile {
+    fn read(&self, buf: &mut [u8]) -> Result<usize, Error> {
+        let ret = unsafe { libc::ocall::read(self.fd, buf.as_mut_ptr() as *mut c_void, buf.len()) };
+        if ret < 0 {
+            Err(Error::new(Errno::from_retval(ret as i32), ""))
+        } else {
+            Ok(ret as usize)
+        }
+    }
+
+    fn write(&self, buf: &[u8]) -> Result<usize, Error> {
+        let ret = unsafe { libc::ocall::write(self.fd, buf.as_ptr() as *const c_void, buf.len()) };
+        if ret < 0 {
+            Err(Error::new(Errno::from_retval(ret as i32), ""))
+        } else {
+            Ok(ret as usize)
+        }
+    }
+
+    fn read_at(&self, offset: usize, buf: &mut [u8]) -> Result<usize, Error> {
+        unimplemented!()
+    }
+
+    fn write_at(&self, offset: usize, buf: &[u8]) -> Result<usize, Error> {
+        unimplemented!()
+    }
+
+    fn readv(&self, bufs: &mut [&mut [u8]]) -> Result<usize, Error> {
+        unimplemented!()
+    }
+
+    fn writev(&self, bufs: &[&[u8]]) -> Result<usize, Error> {
+        unimplemented!()
+    }
+
+    fn seek(&self, pos: SeekFrom) -> Result<off_t, Error> {
+        Err(Error::new(Errno::ESPIPE, "Socket does not support seek"))
+    }
+
+    fn metadata(&self) -> Result<Metadata, Error> {
+        unimplemented!()
+    }
+
+    fn set_len(&self, len: u64) -> Result<(), Error> {
+        unimplemented!()
+    }
+
+    fn sync_all(&self) -> Result<(), Error> {
+        unimplemented!()
+    }
+
+    fn sync_data(&self) -> Result<(), Error> {
+        unimplemented!()
+    }
+
+    fn read_entry(&self) -> Result<String, Error> {
+        unimplemented!()
+    }
+
+    fn as_any(&self) -> &Any {
+        self
+    }
+}

src/libos/src/syscall/mod.rs

@@ -7,8 +7,7 @@
 //! 3. Dispatch the syscall to `do_*` (at this file)
 //! 4. Do some memory checks then call `mod::do_*` (at each module)
 
-use fs::File;
-use fs::{off_t, FileDesc};
+use fs::{File, SocketFile, off_t, FileDesc, FileRef};
 use prelude::*;
 use process::{ChildProcessFilter, FileAction, pid_t, CloneFlags, FutexFlags, FutexOp};
 use std::ffi::{CStr, CString};
@@ -21,6 +20,7 @@ use {fs, process, std, vm};
 use super::*;
 
 use self::consts::*;
+use std::any::Any;
 
 // Use the internal syscall wrappers from sgx_tstd
 //use std::libc_fs as fs;
@@ -177,6 +177,22 @@ pub extern "C" fn dispatch_syscall(
             arg3 as *mut c_void,
             arg4 as *mut libc::socklen_t,
         ),
+        SYS_SENDTO => do_sendto(
+            arg0 as c_int,
+            arg1 as *const c_void,
+            arg2 as size_t,
+            arg3 as c_int,
+            arg4 as *const libc::sockaddr,
+            arg5 as libc::socklen_t,
+        ),
+        SYS_RECVFROM => do_recvfrom(
+            arg0 as c_int,
+            arg1 as *mut c_void,
+            arg2 as size_t,
+            arg3 as c_int,
+            arg4 as *mut libc::sockaddr,
+            arg5 as *mut libc::socklen_t,
+        ),
 
         _ => do_unknown(num, arg0, arg1, arg2, arg3, arg4, arg5),
     };
@@ -654,6 +670,7 @@ fn do_gettimeofday(tv_u: *mut timeval_t) -> Result<isize, Error> {
 const MAP_FAILED: *const c_void = ((-1) as i64) as *const c_void;
 
 fn do_exit(status: i32) -> ! {
+    info!("exit: {}", status);
     extern "C" {
         fn do_exit_task() -> !;
     }
@@ -749,8 +766,15 @@ fn do_socket(domain: c_int, socket_type: c_int, protocol: c_int) -> Result<isize
         "socket: domain: {}, socket_type: {}, protocol: {}",
         domain, socket_type, protocol
     );
-    let ret = unsafe { libc::ocall::socket(domain, socket_type, protocol) };
-    Ok(ret as isize)
+
+    let socket = SocketFile::new(domain, socket_type, protocol)?;
+    let file_ref: Arc<Box<File>> = Arc::new(Box::new(socket));
+
+    let current_ref = process::get_current();
+    let mut proc = current_ref.lock().unwrap();
+
+    let fd = proc.get_files().lock().unwrap().put(file_ref, false);
+    Ok(fd as isize)
 }
 
 fn do_connect(
@@ -762,7 +786,12 @@ fn do_connect(
         "connect: fd: {}, addr: {:?}, addr_len: {}",
         fd, addr, addr_len
     );
-    let ret = unsafe { libc::ocall::connect(fd, addr, addr_len) };
+    let current_ref = process::get_current();
+    let mut proc = current_ref.lock().unwrap();
+    let file_ref = proc.get_files().lock().unwrap().get(fd as FileDesc)?;
+    let socket = file_ref.as_socket()?;
+
+    let ret = unsafe { libc::ocall::connect(socket.fd(), addr, addr_len) };
     Ok(ret as isize)
 }
 
@@ -776,13 +805,26 @@ fn do_accept(
         "accept: fd: {}, addr: {:?}, addr_len: {:?}, flags: {:#x}",
         fd, addr, addr_len, flags
     );
-    let ret = unsafe { libc::ocall::accept4(fd, addr, addr_len, flags) };
-    Ok(ret as isize)
+    let current_ref = process::get_current();
+    let mut proc = current_ref.lock().unwrap();
+    let file_ref = proc.get_files().lock().unwrap().get(fd as FileDesc)?;
+    let socket = file_ref.as_socket()?;
+
+    let new_socket = socket.accept(addr, addr_len, flags)?;
+    let new_file_ref: Arc<Box<File>> = Arc::new(Box::new(new_socket));
+    let new_fd = proc.get_files().lock().unwrap().put(new_file_ref, false);
+
+    Ok(new_fd as isize)
 }
 
 fn do_shutdown(fd: c_int, how: c_int) -> Result<isize, Error> {
     info!("shutdown: fd: {}, how: {}", fd, how);
-    let ret = unsafe { libc::ocall::shutdown(fd, how) };
+    let current_ref = process::get_current();
+    let mut proc = current_ref.lock().unwrap();
+    let file_ref = proc.get_files().lock().unwrap().get(fd as FileDesc)?;
+    let socket = file_ref.as_socket()?;
+
+    let ret = unsafe { libc::ocall::shutdown(socket.fd(), how) };
     Ok(ret as isize)
 }
 
@@ -792,13 +834,23 @@ fn do_bind(
     addr_len: libc::socklen_t,
 ) -> Result<isize, Error> {
     info!("bind: fd: {}, addr: {:?}, addr_len: {}", fd, addr, addr_len);
-    let ret = unsafe { libc::ocall::bind(fd, addr, addr_len) };
+    let current_ref = process::get_current();
+    let mut proc = current_ref.lock().unwrap();
+    let file_ref = proc.get_files().lock().unwrap().get(fd as FileDesc)?;
+    let socket = file_ref.as_socket()?;
+
+    let ret = unsafe { libc::ocall::bind(socket.fd(), addr, addr_len) };
     Ok(ret as isize)
 }
 
 fn do_listen(fd: c_int, backlog: c_int) -> Result<isize, Error> {
     info!("listen: fd: {}, backlog: {}", fd, backlog);
-    let ret = unsafe { libc::ocall::listen(fd, backlog) };
+    let current_ref = process::get_current();
+    let mut proc = current_ref.lock().unwrap();
+    let file_ref = proc.get_files().lock().unwrap().get(fd as FileDesc)?;
+    let socket = file_ref.as_socket()?;
+
+    let ret = unsafe { libc::ocall::listen(socket.fd(), backlog) };
     Ok(ret as isize)
 }
 
@@ -813,7 +865,12 @@ fn do_setsockopt(
         "setsockopt: fd: {}, level: {}, optname: {}, optval: {:?}, optlen: {:?}",
         fd, level, optname, optval, optlen
     );
-    let ret = unsafe { libc::ocall::setsockopt(fd, level, optname, optval, optlen) };
+    let current_ref = process::get_current();
+    let mut proc = current_ref.lock().unwrap();
+    let file_ref = proc.get_files().lock().unwrap().get(fd as FileDesc)?;
+    let socket = file_ref.as_socket()?;
+
+    let ret = unsafe { libc::ocall::setsockopt(socket.fd(), level, optname, optval, optlen) };
     Ok(ret as isize)
 }
 
@@ -828,6 +885,65 @@ fn do_getsockopt(
         "getsockopt: fd: {}, level: {}, optname: {}, optval: {:?}, optlen: {:?}",
         fd, level, optname, optval, optlen
     );
-    let ret = unsafe { libc::ocall::getsockopt(fd, level, optname, optval, optlen) };
+    let current_ref = process::get_current();
+    let mut proc = current_ref.lock().unwrap();
+    let file_ref = proc.get_files().lock().unwrap().get(fd as FileDesc)?;
+    let socket = file_ref.as_socket()?;
+
+    let ret = unsafe { libc::ocall::getsockopt(socket.fd(), level, optname, optval, optlen) };
     Ok(ret as isize)
 }
+
+fn do_sendto(
+    fd: c_int,
+    base: *const c_void,
+    len: size_t,
+    flags: c_int,
+    addr: *const libc::sockaddr,
+    addr_len: libc::socklen_t,
+) -> Result<isize, Error> {
+    info!(
+        "sendto: fd: {}, base: {:?}, len: {}, addr: {:?}, addr_len: {}",
+        fd, base, len, addr, addr_len
+    );
+    let current_ref = process::get_current();
+    let mut proc = current_ref.lock().unwrap();
+    let file_ref = proc.get_files().lock().unwrap().get(fd as FileDesc)?;
+    let socket = file_ref.as_socket()?;
+
+    let ret = unsafe { libc::ocall::sendto(socket.fd(), base, len, flags, addr, addr_len) };
+    Ok(ret as isize)
+}
+
+fn do_recvfrom(
+    fd: c_int,
+    base: *mut c_void,
+    len: size_t,
+    flags: c_int,
+    addr: *mut libc::sockaddr,
+    addr_len: *mut libc::socklen_t,
+) -> Result<isize, Error> {
+    info!(
+        "recvfrom: fd: {}, base: {:?}, len: {}, flags: {}, addr: {:?}, addr_len: {:?}",
+        fd, base, len, flags, addr, addr_len
+    );
+    let current_ref = process::get_current();
+    let mut proc = current_ref.lock().unwrap();
+    let file_ref = proc.get_files().lock().unwrap().get(fd as FileDesc)?;
+    let socket = file_ref.as_socket()?;
+
+    let ret = unsafe { libc::ocall::recvfrom(socket.fd(), base, len, flags, addr, addr_len) };
+    Ok(ret as isize)
+}
+
+trait AsSocket {
+    fn as_socket(&self) -> Result<&SocketFile, Error>;
+}
+
+impl AsSocket for FileRef {
+    fn as_socket(&self) -> Result<&SocketFile, Error> {
+        self.as_any()
+            .downcast_ref::<SocketFile>()
+            .ok_or(Error::new(Errno::EBADF, "not a socket"))
+    }
+}

src/libos/src/util/log.rs

@@ -23,9 +23,10 @@ impl Log for SimpleLogger {
         if self.enabled(record.metadata()) {
             let color = Color::from(record.level());
             println!(
-                "\u{1B}[{}m[{:>5}] {}\u{1B}[0m",
+                "\u{1B}[{}m[{:>5}][{}] {}\u{1B}[0m",
                 color as u8,
                 record.level(),
+                crate::process::do_getpid(),
                 record.args()
             );
         }

test/Makefile

@@ -4,7 +4,7 @@ PROJECT_DIR := $(realpath $(CUR_DIR)/../)
 # Dependencies: need to be compiled but not to run by any Makefile target
 TEST_DEPS := dev_null
 # Tests: need to be compiled and run by test-% target
-TESTS := empty argv hello_world malloc file getpid spawn pipe time truncate readdir mkdir link tls pthread clone server
+TESTS := empty argv hello_world malloc file getpid spawn pipe time truncate readdir mkdir link tls pthread client server
 # Benchmarks: need to be compiled and run by bench-% target
 BENCHES := spawn_and_exit_latency pipe_throughput
 

test/client/main.c

@@ -14,7 +14,7 @@ int main(int argc, const char *argv[]) {
 
 	if (argc != 2) {
 		printf("usage: ./client <ipaddress>\n");
-		return -1;
+		return 0;
 	}
 
 	int sockfd = socket(AF_INET, SOCK_STREAM, 0);