dep: Downgrade rust version to 1.86.0.

.gitignore

@@ -32,4 +32,6 @@ kernel-rv
 kernel-la
 sdcard-rv.img
 second-easyfs.img
-second-fat32.img
+second-fat32.img
+bootloader/loongarch64-direct/target/*
+sdcard-la.img

os/Cargo.toml

@@ -16,7 +16,7 @@ xmas-elf = "0.7.0"
 virtio-drivers = "0.12.0"
 fs = { path = "../fs" }
 hashbrown = "0.12.3"
-smoltcp = { git = "https://github.com/KyleMao2023/smoltcp", branch = "udp-fix", default-features = false, features = [
+smoltcp = { git = "https://github.com/KyleMao2023/smoltcp", branch = "os", default-features = false, features = [
 	"alloc",
 	"medium-ethernet",
 	"proto-ipv4",

os/src/syscall/net.rs

@@ -370,7 +370,7 @@ fn append_cmsg(buf: &mut Vec<u8>, level: i32, ty: i32, payload: &[u8]) {
 }
 
 fn parse_rights_payload(payload: &[u8]) -> Result<Vec<Arc<FileDescription>>, ERRNO> {
-    if !payload.len().is_multiple_of(size_of::<i32>()) {
+    if !payload.len() % size_of::<i32>() == 0 {
         return Err(ERRNO::EINVAL);
     }
 

os/src/syscall/process.rs

@@ -398,7 +398,7 @@ pub fn sys_shmat(shmid: usize, shmaddr: usize, shmflg: i32) -> isize {
             let _ = chosen_end;
             chosen
         } else {
-            if !shmaddr.is_multiple_of(crate::config::PAGE_SIZE) {
+            if !shmaddr % crate::config::PAGE_SIZE == 0 {
                 ipc::detach_segment(shmid);
                 return Err(ERRNO::EINVAL);
             }

rust-toolchain.toml

@@ -1,6 +1,6 @@
 [toolchain]
 profile = "minimal"
 # use the nightly version of the last stable toolchain, see <https://forge.rust-lang.org/>
-channel = "nightly-2025-10-14"
+channel = "nightly-2025-01-17"
 components = ["rust-src", "llvm-tools-preview", "rustfmt", "clippy"]
 targets = ["riscv64gc-unknown-none-elf"]

user/rust-toolchain.toml

@@ -1,5 +1,5 @@
 [toolchain]
 profile = "minimal"
 # use the nightly version of the last stable toolchain, see <https://forge.rust-lang.org/>
-channel = "nightly-2025-10-14"
+channel = "nightly-2025-01-17"
 components = ["rust-src", "llvm-tools-preview", "rustfmt", "clippy"]

user/src/bin/tcp_echo_server.rs

@@ -72,7 +72,7 @@ struct WorkerCtx {
 }
 
 fn fmt_peer(peer: &SockAddrIn) -> ([u8; 4], u16) {
-    let ip = peer.sin_addr.to_be_bytes();
+    let ip = peer.ipv4();
     let port = u16::from_be(peer.sin_port);
     (ip, port)
 }

user/src/net.rs

@@ -100,14 +100,15 @@ impl SockAddrIn {
         Self {
             sin_family: AF_INET as u16,
             sin_port: port.to_be(),
-            sin_addr: u32::from_be_bytes(ip),
+            // Store the integer so the raw struct bytes match network order.
+            sin_addr: u32::from_ne_bytes(ip),
             sin_zero: [0; 8],
         }
     }
 
     /// Return IPv4 octets in host byte order.
     pub fn ipv4(&self) -> [u8; 4] {
-        self.sin_addr.to_be_bytes()
+        self.sin_addr.to_ne_bytes()
     }
 
     /// Return port in host byte order.