diff --git a/kernel/Cargo.lock b/kernel/Cargo.lock
index 20120199..bed0e887 100644
--- a/kernel/Cargo.lock
+++ b/kernel/Cargo.lock
@@ -358,11 +358,11 @@ dependencies = [
  "raw-cpuid 7.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "rboot 0.1.2",
  "rcore-console 0.1.0 (git+https://github.com/rcore-os/rcore-console?rev=b7bacf9)",
- "rcore-fs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)",
- "rcore-fs-devfs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)",
- "rcore-fs-mountfs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)",
- "rcore-fs-ramfs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)",
- "rcore-fs-sfs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)",
+ "rcore-fs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)",
+ "rcore-fs-devfs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)",
+ "rcore-fs-mountfs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)",
+ "rcore-fs-ramfs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)",
+ "rcore-fs-sfs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)",
  "rcore-memory 0.1.0",
  "rcore-thread 0.1.0 (git+https://github.com/function2-llx/rcore-thread?rev=8c1022d)",
  "riscv 0.5.0 (git+https://github.com/rcore-os/riscv)",
@@ -388,7 +388,7 @@ dependencies = [
 [[package]]
 name = "rcore-fs"
 version = "0.1.0"
-source = "git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a#7e7c74a921803d6c8edc99b8ebb6fc85774819b9"
+source = "git+https://github.com/function2-llx/rcore-fs?rev=837a298#837a298e2d09690b005258479cc1ad3173f0ac40"
 dependencies = [
  "filetime 0.2.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -398,42 +398,42 @@ dependencies = [
 [[package]]
 name = "rcore-fs-devfs"
 version = "0.1.0"
-source = "git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a#7e7c74a921803d6c8edc99b8ebb6fc85774819b9"
+source = "git+https://github.com/function2-llx/rcore-fs?rev=837a298#837a298e2d09690b005258479cc1ad3173f0ac40"
 dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "rcore-fs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)",
+ "rcore-fs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rcore-fs-mountfs"
 version = "0.1.0"
-source = "git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a#7e7c74a921803d6c8edc99b8ebb6fc85774819b9"
+source = "git+https://github.com/function2-llx/rcore-fs?rev=837a298#837a298e2d09690b005258479cc1ad3173f0ac40"
 dependencies = [
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "rcore-fs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)",
+ "rcore-fs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rcore-fs-ramfs"
 version = "0.1.0"
-source = "git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a#7e7c74a921803d6c8edc99b8ebb6fc85774819b9"
+source = "git+https://github.com/function2-llx/rcore-fs?rev=837a298#837a298e2d09690b005258479cc1ad3173f0ac40"
 dependencies = [
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "rcore-fs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)",
+ "rcore-fs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "rcore-fs-sfs"
 version = "0.1.0"
-source = "git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a#7e7c74a921803d6c8edc99b8ebb6fc85774819b9"
+source = "git+https://github.com/function2-llx/rcore-fs?rev=837a298#837a298e2d09690b005258479cc1ad3173f0ac40"
 dependencies = [
  "bitvec 0.17.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "rcore-fs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)",
+ "rcore-fs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)",
  "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "static_assertions 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -743,11 +743,11 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum raw-cpuid 6.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "30a9d219c32c9132f7be513c18be77c9881c7107d2ab5569d205a6a0f0e6dc7d"
 "checksum raw-cpuid 7.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "b4a349ca83373cfa5d6dbb66fd76e58b2cca08da71a5f6400de0a0a6a9bceeaf"
 "checksum rcore-console 0.1.0 (git+https://github.com/rcore-os/rcore-console?rev=b7bacf9)" = "<none>"
-"checksum rcore-fs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)" = "<none>"
-"checksum rcore-fs-devfs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)" = "<none>"
-"checksum rcore-fs-mountfs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)" = "<none>"
-"checksum rcore-fs-ramfs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)" = "<none>"
-"checksum rcore-fs-sfs 0.1.0 (git+https://github.com/rcore-os/rcore-fs?rev=7e7c74a)" = "<none>"
+"checksum rcore-fs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)" = "<none>"
+"checksum rcore-fs-devfs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)" = "<none>"
+"checksum rcore-fs-mountfs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)" = "<none>"
+"checksum rcore-fs-ramfs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)" = "<none>"
+"checksum rcore-fs-sfs 0.1.0 (git+https://github.com/function2-llx/rcore-fs?rev=837a298)" = "<none>"
 "checksum rcore-thread 0.1.0 (git+https://github.com/function2-llx/rcore-thread?rev=8c1022d)" = "<none>"
 "checksum redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)" = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"
 "checksum register 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e10f31b6d2299e5620986ad9fcdd66463e125ad72af4f403f9aedf7592d5ccdb"
diff --git a/kernel/Cargo.toml b/kernel/Cargo.toml
index 7c34869b..2b7e9938 100644
--- a/kernel/Cargo.toml
+++ b/kernel/Cargo.toml
@@ -66,11 +66,11 @@ bitmap-allocator = { git = "https://github.com/rcore-os/bitmap-allocator" }
 rcore-console = { git = "https://github.com/rcore-os/rcore-console", rev = "b7bacf9", default-features = false }
 rcore-memory = { path = "../crate/memory" }
 rcore-thread = { git = "https://github.com/function2-llx/rcore-thread", rev = "8c1022d" }
-rcore-fs = { git = "https://github.com/rcore-os/rcore-fs", rev = "7e7c74a" }
-rcore-fs-sfs = { git = "https://github.com/rcore-os/rcore-fs", rev = "7e7c74a" }
-rcore-fs-ramfs = { git = "https://github.com/rcore-os/rcore-fs", rev = "7e7c74a" }
-rcore-fs-mountfs = { git = "https://github.com/rcore-os/rcore-fs", rev = "7e7c74a" }
-rcore-fs-devfs = { git = "https://github.com/rcore-os/rcore-fs", rev = "7e7c74a" }
+rcore-fs = { git = "https://github.com/function2-llx/rcore-fs", rev = "837a298" }
+rcore-fs-sfs = { git = "https://github.com/function2-llx/rcore-fs", rev = "837a298" }
+rcore-fs-ramfs = { git = "https://github.com/function2-llx/rcore-fs", rev = "837a298" }
+rcore-fs-mountfs = { git = "https://github.com/function2-llx/rcore-fs", rev = "837a298" }
+rcore-fs-devfs = { git = "https://github.com/function2-llx/rcore-fs", rev = "837a298" }
 compression = { version = "0.1.4", default-features = false, features = ["gzip"] }
 
 
diff --git a/kernel/src/syscall/fs.rs b/kernel/src/syscall/fs.rs
index 5260d8d9..570e993c 100644
--- a/kernel/src/syscall/fs.rs
+++ b/kernel/src/syscall/fs.rs
@@ -563,7 +563,14 @@ impl Syscall<'_> {
                     file_inode
                 }
                 Err(FsError::EntryNotFound) => {
-                    dir_inode.create(file_name, FileType::File, mode as u32)?
+                    let inode = dir_inode.create(file_name, FileType::File, mode as u32)?;
+                    let mut metadata = inode.metadata()?;
+                    let now = TimeSpec::get_epoch().into();
+                    metadata.atime = now;
+                    metadata.mtime = now;
+                    metadata.ctime = now;
+                    inode.set_metadata(&metadata)?;
+                    inode
                 }
                 Err(e) => return Err(SysError::from(e)),
             }
@@ -650,7 +657,8 @@ impl Syscall<'_> {
         let mut proc = self.process();
         let stat_ref = unsafe { self.vm().check_write_ptr(stat_ptr)? };
         let file = proc.get_file(fd)?;
-        let stat = Stat::from(file.metadata()?);
+        let metadata = file.metadata()?;
+        let stat = Stat::from(metadata);
         *stat_ref = stat;
         Ok(0)
     }
diff --git a/kernel/src/syscall/time.rs b/kernel/src/syscall/time.rs
index 3424c68a..3220cd15 100644
--- a/kernel/src/syscall/time.rs
+++ b/kernel/src/syscall/time.rs
@@ -4,6 +4,7 @@ use super::*;
 use crate::consts::USEC_PER_TICK;
 use core::time::Duration;
 use lazy_static::lazy_static;
+use rcore_fs::vfs::Timespec;
 
 impl Syscall<'_> {
     pub fn sys_gettimeofday(&mut self, tv: *mut TimeVal, tz: *const u8) -> SysResult {
@@ -151,6 +152,15 @@ impl TimeSpec {
     }
 }
 
+impl Into<Timespec> for TimeSpec {
+    fn into(self) -> Timespec {
+        Timespec {
+            sec: self.sec as i64,
+            nsec: self.nsec as i32,
+        }
+    }
+}
+
 // ignore other fields for now
 #[repr(C)]
 pub struct RUsage {