use wasi crate

Author: newpavlov

src/libstd/sys/wasi/args.rs

@@ -27,14 +27,24 @@ pub fn args() -> Args {
     })
 }
 
+fn cvt_wasi(r: u16) -> crate::io::Result<()> {
+    if r != 0 {
+        Err(Error::from_raw_os_error(r as i32))
+    } else {
+        Ok(())
+    }
+}
+
 fn maybe_args() -> io::Result<Args> {
+    // FIXME: replace with safe functions
+    use wasi::wasi_unstable::raw::{__wasi_args_sizes_get, __wasi_args_get};
     unsafe {
         let (mut argc, mut argv_buf_size) = (0, 0);
-        cvt_wasi(libc::__wasi_args_sizes_get(&mut argc, &mut argv_buf_size))?;
+        cvt_wasi(__wasi_args_sizes_get(&mut argc, &mut argv_buf_size))?;
 
-        let mut argc = vec![core::ptr::null_mut::<libc::c_char>(); argc];
+        let mut argc = vec![core::ptr::null_mut::<u8>(); argc];
         let mut argv_buf = vec![0; argv_buf_size];
-        cvt_wasi(libc::__wasi_args_get(argc.as_mut_ptr(), argv_buf.as_mut_ptr()))?;
+        cvt_wasi(__wasi_args_get(argc.as_mut_ptr(), argv_buf.as_mut_ptr()))?;
 
         let args = argc.into_iter()
             .map(|ptr| CStr::from_ptr(ptr).to_bytes().to_vec())

src/libstd/sys/wasi/ext/fs.rs

@@ -336,16 +336,16 @@ pub trait FileTypeExt {
 
 impl FileTypeExt for fs::FileType {
     fn is_block_device(&self) -> bool {
-        self.as_inner().bits() == libc::__WASI_FILETYPE_BLOCK_DEVICE
+        self.as_inner().bits() == wasi::FILETYPE_BLOCK_DEVICE
     }
     fn is_character_device(&self) -> bool {
-        self.as_inner().bits() == libc::__WASI_FILETYPE_CHARACTER_DEVICE
+        self.as_inner().bits() == wasi::FILETYPE_CHARACTER_DEVICE
     }
     fn is_socket_dgram(&self) -> bool {
-        self.as_inner().bits() == libc::__WASI_FILETYPE_SOCKET_DGRAM
+        self.as_inner().bits() == wasi::FILETYPE_SOCKET_DGRAM
     }
     fn is_socket_stream(&self) -> bool {
-        self.as_inner().bits() == libc::__WASI_FILETYPE_SOCKET_STREAM
+        self.as_inner().bits() == wasi::FILETYPE_SOCKET_STREAM
     }
 }
 

src/libstd/sys/wasi/ext/io.rs

@@ -8,6 +8,8 @@ use crate::sys;
 use crate::net;
 use crate::sys_common::{AsInner, FromInner, IntoInner};
 
+use wasi::wasi_unstable as wasi;
+
 /// Raw file descriptors.
 pub type RawFd = u32;
 
@@ -125,18 +127,18 @@ impl IntoRawFd for fs::File {
 
 impl AsRawFd for io::Stdin {
     fn as_raw_fd(&self) -> RawFd {
-        libc::STDIN_FILENO as u32
+        wasi::STDIN_FD
     }
 }
 
 impl AsRawFd for io::Stdout {
     fn as_raw_fd(&self) -> RawFd {
-        libc::STDOUT_FILENO as u32
+        wasi::STDOUT_FD
     }
 }
 
 impl AsRawFd for io::Stderr {
     fn as_raw_fd(&self) -> RawFd {
-        libc::STDERR_FILENO as u32
+        wasi::STDERR_FD
     }
 }