Add lstat, fix timespec for musln32.

kernel/src/syscall/fs.rs

@@ -3,6 +3,7 @@
 use core::cell::UnsafeCell;
 use core::cmp::min;
 use core::mem::size_of;
+#[cfg(not(target_arch = "mips"))]
 use rcore_fs::vfs::Timespec;
 
 use crate::drivers::SOCKET_ACTIVITY;
@@ -913,6 +914,13 @@ pub struct Stat {
     ctime: Timespec,
 }
 
+#[cfg(target_arch = "mips")]
+#[derive(Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Debug, Hash)]
+pub struct Timespec {
+    pub sec: i32,
+    pub nsec: i32,
+}
+
 #[cfg(target_arch = "mips")]
 #[repr(C)]
 #[derive(Debug)]
@@ -1096,9 +1104,9 @@ impl From<Metadata> for Stat {
             size: info.size as u64,
             blksize: info.blk_size as u32,
             blocks: info.blocks as u64,
-            atime: info.atime,
-            mtime: info.mtime,
-            ctime: info.ctime,
+            atime: Timespec { sec: info.atime.sec as i32, nsec: info.atime.nsec },
+            mtime: Timespec { sec: info.mtime.sec as i32, nsec: info.mtime.nsec },
+            ctime: Timespec { sec: info.ctime.sec as i32, nsec: info.ctime.nsec },
             __pad1: 0,
             __pad2: 0,
             __pad3: 0,

kernel/src/syscall/mod.rs

@@ -324,6 +324,7 @@ fn mips_syscall(id: usize, args: [usize; 6], tf: &mut TrapFrame) -> Option<SysRe
         SYS_DUP2 => sys_dup2(args[0], args[1]),
         SYS_MMAP2 => sys_mmap(args[0], args[1], args[2], args[3], args[4], args[5] * 4096),
         SYS_FSTAT64 => sys_fstat(args[0], args[1] as *mut Stat),
+        SYS_LSTAT64 => sys_lstat(args[0] as *const u8, args[1] as *mut Stat),
         SYS_STAT64 => sys_stat(args[0] as *const u8, args[1] as *mut Stat),
         SYS_PIPE => {
             let fd_ptr = args[0] as *mut u32;