add enough errno variants to cover all windows codes too

crates/wasi-common/src/error.rs

@@ -31,6 +31,9 @@ pub enum Error {
     /// Errno::Badf: Bad file descriptor
     #[error("Badf: Bad file descriptor")]
     Badf,
+    /// Errno::Busy: Device or resource busy
+    #[error("Busy: Device or resource busy")]
+    Busy,
     /// Errno::Exist: File exists
     #[error("Exist: File exists")]
     Exist,
@@ -64,9 +67,15 @@ pub enum Error {
     /// Errno::Nametoolong: Filename too long
     #[error("Nametoolong: Filename too long")]
     Nametoolong,
+    /// Errno::Nfile: Too many files open in system
+    #[error("Nfile: Too many files open in system")]
+    Nfile,
     /// Errno::Noent: No such file or directory
     #[error("Noent: No such file or directory")]
     Noent,
+    /// Errno::Nomem: Not enough space
+    #[error("Nomem: Not enough space")]
+    Nomem,
     /// Errno::Nospc: No space left on device
     #[error("Nospc: No space left on device")]
     Nospc,
@@ -82,6 +91,9 @@ pub enum Error {
     /// Errno::Overflow: Value too large to be stored in data type.
     #[error("Overflow: Value too large to be stored in data type")]
     Overflow,
+    /// Errno::Pipe: Broken pipe
+    #[error("Pipe: Broken pipe")]
+    Pipe,
     /// Errno::Perm: Operation not permitted
     #[error("Perm: Operation not permitted")]
     Perm,
@@ -108,7 +120,6 @@ impl From<io::Error> for Error {
     fn from(err: io::Error) -> Self {
         match err.raw_os_error() {
             Some(code) => match code as u32 {
-                winerror::ERROR_SUCCESS => Self::Success,
                 winerror::ERROR_BAD_ENVIRONMENT => Self::TooBig,
                 winerror::ERROR_FILE_NOT_FOUND => Self::Noent,
                 winerror::ERROR_PATH_NOT_FOUND => Self::Noent,
@@ -144,11 +155,14 @@ impl From<io::Error> for Error {
     fn from(err: io::Error) -> Self {
         match err.raw_os_error() {
             Some(code) => match code {
+                libc::EPIPE => Self::Pipe,
                 libc::EPERM => Self::Perm,
                 libc::ENOENT => Self::Noent,
+                libc::ENOMEM => Self::Nomem,
                 libc::E2BIG => Self::TooBig,
                 libc::EIO => Self::Io,
                 libc::EBADF => Self::Badf,
+                libc::EBUSY => Self::Busy,
                 libc::EACCES => Self::Acces,
                 libc::EFAULT => Self::Fault,
                 libc::ENOTDIR => Self::Notdir,
@@ -161,6 +175,7 @@ impl From<io::Error> for Error {
                 libc::EMFILE => Self::Mfile,
                 libc::EMLINK => Self::Mlink,
                 libc::ENAMETOOLONG => Self::Nametoolong,
+                libc::ENFILE => Self::Nfile,
                 libc::ENOTEMPTY => Self::Notempty,
                 libc::ELOOP => Self::Loop,
                 libc::EOVERFLOW => Self::Overflow,

crates/wasi-common/src/sys/windows/poll.rs

@@ -164,7 +164,7 @@ fn handle_rw_event(event: FdEventData, out_events: &mut Vec<types::Event>) {
                 .as_file()
                 .and_then(|f| f.metadata())
                 .map(|m| m.len())
-                .map_err(Into::into)
+                .map_err(|ioerror| types::Errno::from(Error::from(ioerror)))
         } else {
             // The spec is unclear what nbytes should actually be for __WASI_EVENTTYPE_FD_WRITE and
             // the implementation on Unix just returns 0 here, so it's probably fine

crates/wasi-common/src/wasi.rs

@@ -39,6 +39,7 @@ impl From<Error> for Errno {
             Error::TooBig => Errno::TooBig,
             Error::Acces => Errno::Acces,
             Error::Badf => Errno::Badf,
+            Error::Busy => Errno::Busy,
             Error::Exist => Errno::Exist,
             Error::Fault => Errno::Fault,
             Error::Fbig => Errno::Fbig,
@@ -50,12 +51,15 @@ impl From<Error> for Errno {
             Error::Mfile => Errno::Mfile,
             Error::Mlink => Errno::Mlink,
             Error::Nametoolong => Errno::Nametoolong,
+            Error::Nfile => Errno::Nfile,
             Error::Noent => Errno::Noent,
+            Error::Nomem => Errno::Nomem,
             Error::Nospc => Errno::Nospc,
             Error::Notdir => Errno::Notdir,
             Error::Notempty => Errno::Notempty,
             Error::Notsup => Errno::Notsup,
             Error::Overflow => Errno::Overflow,
+            Error::Pipe => Errno::Pipe,
             Error::Perm => Errno::Perm,
             Error::Spipe => Errno::Spipe,
             Error::Notcapable => Errno::Notcapable,