Support setting file accessed/modified timestamps

[rust.git] / library / std / src / sys / wasi / fs.rs

diff --git a/library/std/src/sys/wasi/fs.rs b/library/std/src/sys/wasi/fs.rs
index cd6815bfc2136786e36a73b6225852782535453d..6614ae397b57f43ec617eb6040ab9ed5c7ea3526 100644 (file)
--- a/library/std/src/sys/wasi/fs.rs
+++ b/library/std/src/sys/wasi/fs.rs
@@ -63,6 +63,12 @@ pub struct FilePermissions {
     readonly: bool,
 }
 
+#[derive(Copy, Clone, Debug, Default)]
+pub struct FileTimes {
+    accessed: Option<wasi::Timestamp>,
+    modified: Option<wasi::Timestamp>,
+}
+
 #[derive(PartialEq, Eq, Hash, Debug, Copy, Clone)]
 pub struct FileType {
     bits: wasi::Filetype,
@@ -112,6 +118,16 @@ pub fn set_readonly(&mut self, readonly: bool) {
     }
 }
 
+impl FileTimes {
+    pub fn set_accessed(&mut self, t: SystemTime) {
+        self.accessed = Some(t.to_wasi_timestamp_or_panic());
+    }
+
+    pub fn set_modified(&mut self, t: SystemTime) {
+        self.modified = Some(t.to_wasi_timestamp_or_panic());
+    }
+}
+
 impl FileType {
     pub fn is_dir(&self) -> bool {
         self.bits == wasi::FILETYPE_DIRECTORY
@@ -459,6 +475,15 @@ pub fn set_permissions(&self, _perm: FilePermissions) -> io::Result<()> {
         unsupported()
     }
 
+    pub fn set_times(&self, times: FileTimes) -> io::Result<()> {
+        self.fd.filestat_set_times(
+            times.accessed.unwrap_or(0),
+            times.modified.unwrap_or(0),
+            times.accessed.map_or(0, |_| wasi::FSTFLAGS_ATIM)
+                | times.modified.map_or(0, |_| wasi::FSTFLAGS_MTIM),
+        )
+    }
+
     pub fn read_link(&self, file: &Path) -> io::Result<PathBuf> {
         read_link(&self.fd, file)
     }