Fix incompatible timespec convertion

deps/sefs

@@ -1 +1 @@
-Subproject commit 522fe55653791084f2dad0d3766b4e48b332b101
+Subproject commit d26132ca7b5a3338046e4b644cb75953981f0feb

src/libos/src/fs/hostfs.rs

@@ -343,15 +343,15 @@ impl IntoFsMetadata for fs::Metadata {
             blocks: self.st_blocks() as usize,
             atime: Timespec {
                 sec: self.st_atime(),
-                nsec: self.st_atime_nsec() as i32,
+                nsec: self.st_atime_nsec(),
             },
             mtime: Timespec {
                 sec: self.st_mtime(),
-                nsec: self.st_mtime_nsec() as i32,
+                nsec: self.st_mtime_nsec(),
             },
             ctime: Timespec {
                 sec: self.st_ctime(),
-                nsec: self.st_ctime_nsec() as i32,
+                nsec: self.st_ctime_nsec(),
             },
             type_: match self.st_mode() & 0xf000 {
                 libc::S_IFCHR => FileType::CharDevice,

src/libos/src/time/mod.rs

@@ -248,7 +248,7 @@ impl TimeProvider for OcclumTimeProvider {
         let time = do_gettimeofday();
         Timespec {
             sec: time.sec,
-            nsec: time.usec as i32 * 1000,
+            nsec: time.usec * 1000,
         }
     }
 }