dir: add set times

crates/wasi-c2/Cargo.toml

@@ -29,7 +29,7 @@ cap-std = "0.8"
 cap-fs-ext = "0.8"
 cap-time-ext = "0.8"
 cap-rand = "0.8"
-fs-set-times = "0.2.1"
+fs-set-times = "0.2.2"
 cfg-if = "1"
 
 [badges]

crates/wasi-c2/src/dir.rs

@@ -1,5 +1,6 @@
 use crate::error::Error;
 use crate::file::{FdFlags, FileCaps, FileType, Filestat, OFlags, WasiFile};
+use cap_fs_ext::SystemTimeSpec;
 use std::any::Any;
 use std::convert::TryInto;
 use std::ops::Deref;
@@ -35,6 +36,12 @@ pub trait WasiDir {
         target_dir: &dyn WasiDir,
         target_path: &str,
     ) -> Result<(), Error>;
+    fn set_times(
+        &self,
+        path: &str,
+        atime: Option<SystemTimeSpec>,
+        mtime: Option<SystemTimeSpec>,
+    ) -> Result<(), Error>;
 }
 
 pub(crate) struct DirEntry {
@@ -399,4 +406,13 @@ impl WasiDir for cap_std::fs::Dir {
         self.hard_link(Path::new(src_path), target_dir, Path::new(target_path))?;
         Ok(())
     }
+    fn set_times(
+        &self,
+        path: &str,
+        atime: Option<SystemTimeSpec>,
+        mtime: Option<SystemTimeSpec>,
+    ) -> Result<(), Error> {
+        cap_fs_ext::DirExt::set_times(self, Path::new(path), atime, mtime)?;
+        Ok(())
+    }
 }

crates/wasi-c2/src/snapshots/preview_1.rs

@@ -322,8 +322,9 @@ impl<'a> wasi_snapshot_preview1::WasiSnapshotPreview1 for WasiCtx {
         mtim: types::Timestamp,
         fst_flags: types::Fstflags,
     ) -> Result<(), Error> {
-        use std::time::{Duration, UNIX_EPOCH};
-        // Validate flags, transform into well-structured arguments
+        let fd = u32::from(fd);
+        let table = self.table();
+        // Validate flags
         let set_atim = fst_flags.contains(&types::Fstflags::ATIM);
         let set_atim_now = fst_flags.contains(&types::Fstflags::ATIM_NOW);
         let set_mtim = fst_flags.contains(&types::Fstflags::MTIM);
@@ -331,6 +332,8 @@ impl<'a> wasi_snapshot_preview1::WasiSnapshotPreview1 for WasiCtx {
         if (set_atim && set_atim_now) || (set_mtim && set_mtim_now) {
             return Err(Error::Inval);
         }
+        if table.is::<FileEntry>(fd) {
+            use std::time::{Duration, UNIX_EPOCH};
             let atim = if set_atim {
                 Some(SystemTimeSpec::Absolute(
                     UNIX_EPOCH + Duration::from_nanos(atim),
@@ -350,17 +353,36 @@ impl<'a> wasi_snapshot_preview1::WasiSnapshotPreview1 for WasiCtx {
                 None
             };
 
-        let fd = u32::from(fd);
-        let table = self.table();
-        if table.is::<FileEntry>(fd) {
             let file_entry: Ref<FileEntry> = table.get(fd).unwrap();
             let f = file_entry.get_cap(FileCaps::FILESTAT_SET_TIMES)?;
             f.set_times(atim, mtim)?;
             Ok(())
         } else if table.is::<DirEntry>(fd) {
+            use cap_std::time::{Duration, SystemClock};
             let dir_entry: Ref<DirEntry> = table.get(fd).unwrap();
             let d = dir_entry.get_cap(DirCaps::FILESTAT_SET_TIMES)?;
-            todo!("d.set_times(atim, mtim)?;")
+
+            use cap_fs_ext::SystemTimeSpec;
+            let atim = if set_atim {
+                Some(SystemTimeSpec::Absolute(
+                    SystemClock::UNIX_EPOCH + Duration::from_nanos(atim),
+                ))
+            } else if set_atim_now {
+                Some(SystemTimeSpec::SymbolicNow)
+            } else {
+                None
+            };
+            let mtim = if set_mtim {
+                Some(SystemTimeSpec::Absolute(
+                    SystemClock::UNIX_EPOCH + Duration::from_nanos(mtim),
+                ))
+            } else if set_mtim_now {
+                Some(SystemTimeSpec::SymbolicNow)
+            } else {
+                None
+            };
+
+            d.set_times(".", atim, mtim)
         } else {
             Err(Error::Badf)
         }