Implement the remaining hostcalls (#176)

* Implement the remaining hostcalls * host->wasm32 encoding: convert to little-endian if required * Add an errno test
bytecodealliance · May 17, 2019 · 40ae1df · 40ae1df
1 parent 6806813
commit 40ae1df
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Showing 10 changed files with 2,851 additions and 1,362 deletions.
diff --git a/lucet-wasi/bindings.json b/lucet-wasi/bindings.json
@@ -6,21 +6,40 @@
         "clock_time_get": "__wasi_clock_time_get",
         "environ_get": "__wasi_environ_get",
         "environ_sizes_get": "__wasi_environ_sizes_get",
-        "proc_exit": "__wasi_proc_exit",
+        "fd_advise": "__wasi_fd_advise",
+        "fd_allocate": "__wasi_fd_allocate",
         "fd_close": "__wasi_fd_close",
+        "fd_datasync": "__wasi_fd_datasync",
         "fd_fdstat_get": "__wasi_fd_fdstat_get",
         "fd_fdstat_set_flags": "__wasi_fd_fdstat_set_flags",
+        "fd_fdstat_set_rights": "__wasi_fd_fdstat_set_rights",
         "fd_filestat_get": "__wasi_fd_filestat_get",
-        "fd_prestat_get": "__wasi_fd_prestat_get",
+        "fd_filestat_set_size": "__wasi_fd_filestat_set_size",
+        "fd_filestat_set_times": "__wasi_fd_filestat_set_times",
+        "fd_pread": "__wasi_fd_pread",
         "fd_prestat_dir_name": "__wasi_fd_prestat_dir_name",
+        "fd_prestat_get": "__wasi_fd_prestat_get",
+        "fd_pwrite": "__wasi_fd_pwrite",
         "fd_read": "__wasi_fd_read",
+        "fd_readdir": "__wasi_fd_readdir",
+        "fd_renumber": "__wasi_fd_renumber",
         "fd_seek": "__wasi_fd_seek",
+        "fd_sync": "__wasi_fd_sync",
+        "fd_tell": "__wasi_fd_tell",
         "fd_write": "__wasi_fd_write",
         "path_create_directory": "__wasi_path_create_directory",
         "path_filestat_get": "__wasi_path_filestat_get",
-        "path_unlink_file": "__wasi_path_unlink_file",
+        "path_filestat_set_times": "__wasi_path_filestat_set_times",
+        "path_link": "__wasi_path_link",
         "path_open": "__wasi_path_open",
+        "path_readlink": "__wasi_path_readlink",
+        "path_remove_directory": "__wasi_path_remove_directory",
+        "path_rename": "__wasi_path_rename",
+        "path_symlink": "__wasi_path_symlink",
+        "path_unlink_file": "__wasi_path_unlink_file",
         "poll_oneoff": "__wasi_poll_oneoff",
-        "random_get": "__wasi_random_get"
+        "proc_exit": "__wasi_proc_exit",
+        "random_get": "__wasi_random_get",
+        "sched_yield": "__wasi_sched_yield"
     }
 }
diff --git a/lucet-wasi/src/host.rs b/lucet-wasi/src/host.rs
@@ -17,6 +17,18 @@ pub unsafe fn ciovec_to_nix_mut<'a>(
     nix::sys::uio::IoVec::from_mut_slice(slice)
 }
 
+pub unsafe fn iovec_to_nix<'a>(iovec: &'a __wasi_iovec_t) -> nix::sys::uio::IoVec<&'a [u8]> {
+    let slice = std::slice::from_raw_parts(iovec.buf as *const u8, iovec.buf_len);
+    nix::sys::uio::IoVec::from_slice(slice)
+}
+
+pub unsafe fn iovec_to_nix_mut<'a>(
+    iovec: &'a mut __wasi_iovec_t,
+) -> nix::sys::uio::IoVec<&'a mut [u8]> {
+    let slice = std::slice::from_raw_parts_mut(iovec.buf as *mut u8, iovec.buf_len);
+    nix::sys::uio::IoVec::from_mut_slice(slice)
+}
+
 pub fn errno_from_nix(errno: nix::errno::Errno) -> __wasi_errno_t {
     let e = match errno {
         nix::errno::Errno::EPERM => __WASI_EPERM,