Extending filesystem support for hermit-os

Author: simonschoening

Cargo.lock

@@ -1975,17 +1975,6 @@ dependencies = [
  "unic-langid",
 ]
 
-[[package]]
-name = "io-lifetimes"
-version = "1.0.11"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "eae7b9aee968036d54dce06cebaefd919e4472e753296daccd6d344e3e2df0c2"
-dependencies = [
- "hermit-abi 0.3.3",
- "libc",
- "windows-sys 0.48.0",
-]
-
 [[package]]
 name = "ipnet"
 version = "2.7.2"
@@ -1999,7 +1988,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "24fddda5af7e54bf7da53067d6e802dbcc381d0a8eef629df528e3ebf68755cb"
 dependencies = [
  "hermit-abi 0.3.3",
- "rustix 0.38.2",
+ "rustix",
  "windows-sys 0.48.0",
 ]
 

library/std/src/sys/hermit/fd.rs

@@ -48,6 +48,11 @@ impl FileDesc {
     pub fn set_nonblocking(&self, _nonblocking: bool) -> io::Result<()> {
         unsupported()
     }
+
+    pub fn fstat(&self, stat: *mut abi::stat) -> io::Result<()> {
+        cvt(unsafe { abi::fstat(self.fd.as_raw_fd(), stat) })?;
+        Ok(())
+    }
 }
 
 impl<'a> Read for &'a FileDesc {