From b8afa7cfb02b32278e268924e189170496f81c1b Mon Sep 17 00:00:00 2001
From: Chuyan Zhang <me@zcy.moe>
Date: Thu, 23 Nov 2023 02:11:16 -0800
Subject: Add some callback (not finished)

---
 src/utils/mod.rs | 49 +++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 41 insertions(+), 8 deletions(-)

(limited to 'src/utils')

diff --git a/src/utils/mod.rs b/src/utils/mod.rs
index 2ea25e7..60b09f2 100644
--- a/src/utils/mod.rs
+++ b/src/utils/mod.rs
@@ -1,15 +1,48 @@
-use crate::disk::inode::INODE_SIZE;
+use crate::block_device::BLOCK_SIZE;
+use crate::disk::inode::{Inode, INODE_SIZE};
 use crate::{AyaFS, INODE_PER_BLOCK};
-use std::time::{SystemTime, UNIX_EPOCH};
+use fuser::FileAttr;
+use std::time::{Duration, SystemTime, UNIX_EPOCH};
 
-impl AyaFS {
-    pub(crate) fn time_now() -> u32 {
-        SystemTime::now()
-            .duration_since(UNIX_EPOCH)
-            .expect("How can current time be earlier than UNIX_EPOCH?")
-            .as_secs() as u32
+pub(crate) fn time_now() -> u32 {
+    SystemTime::now()
+        .duration_since(UNIX_EPOCH)
+        .expect("How can current time be earlier than UNIX_EPOCH?")
+        .as_secs() as u32
+}
+
+pub(crate) fn from_systime(system_time: SystemTime) -> u32 {
+    system_time
+        .duration_since(UNIX_EPOCH)
+        .expect("How can current time be earlier than UNIX_EPOCH?")
+        .as_secs() as u32
+}
+
+pub(crate) fn make_fileattr(inode_index: usize, inode: &Inode) -> FileAttr {
+    FileAttr {
+        ino: inode_index as u64,
+        size: inode.size as u64,
+        blocks: inode.n_blocks as u64,
+        atime: to_systime(inode.atime),
+        mtime: to_systime(inode.atime),
+        ctime: to_systime(inode.ctime),
+        crtime: to_systime(inode.crtime),
+        kind: inode.mode.into(),
+        perm: inode.mode.perm(),
+        nlink: inode.n_links as u32,
+        uid: inode.uid,
+        gid: inode.gid,
+        rdev: 0, // 我们不会遇到这个的
+        blksize: BLOCK_SIZE as u32,
+        flags: inode.flags,
     }
+}
+
+pub(crate) fn to_systime(time: u32) -> SystemTime {
+    UNIX_EPOCH + Duration::from_secs(time as u64)
+}
 
+impl AyaFS {
     /// 输入 inode 编号, 返回它对应的 block number 和 block 内 offset
     pub(crate) fn locate_inode(&self, inode_index: usize) -> (usize, usize) {
         let block_number =
-- 
cgit v1.2.3-70-g09d2