diff --git a/Cargo.lock b/Cargo.lock
index 5468e75..8f8fe02 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -68,18 +68,18 @@ checksum = "e91b56cd4cadaeb79bbf1a5645f6b4f8dc5bde8834ad5894a8db35fda9efa1fe"
 
 [[package]]
 name = "zerocopy"
-version = "0.7.35"
+version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
+checksum = "6129d25825e874589a0e529175dd060c13dab4f3d960c6a0b711e5535b598bb2"
 dependencies = [
  "zerocopy-derive",
 ]
 
 [[package]]
 name = "zerocopy-derive"
-version = "0.7.35"
+version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
+checksum = "d917df3784b4e2f5deb708d14623b2c02833890e1aa7a5dd1088998e8e9402b1"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index 3f8fc01..9d5c98e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,8 +15,8 @@ rustdoc-args = ["--cfg", "docsrs"]
 
 [dependencies]
 num_enum = { version = "0.7", default-features = false, optional = true }
-zerocopy = { version = "0.7", default-features = false, optional = true }
-zerocopy-derive = { version = "0.7", optional = true }
+zerocopy = { version = "0.8", default-features = false, optional = true }
+zerocopy-derive = { version = "0.8", optional = true }
 
 [features]
 default = []
diff --git a/bindgen.sh b/bindgen.sh
index 68dd28b..78f5197 100755
--- a/bindgen.sh
+++ b/bindgen.sh
@@ -12,7 +12,7 @@ gen() {
         --with-derive-partialeq \
         --with-derive-eq \
         --with-attribute-custom-enum '.*=#[cfg_attr(feature = "num_enum", derive(num_enum::IntoPrimitive,num_enum::TryFromPrimitive,num_enum::UnsafeFromPrimitive,))]' \
-        --with-attribute-custom-struct '.*=#[cfg_attr(feature = "zerocopy", derive(zerocopy_derive::FromZeroes,zerocopy_derive::FromBytes,zerocopy_derive::AsBytes,))]' \
+        --with-attribute-custom-struct '.*=#[cfg_attr(feature = "zerocopy", derive(zerocopy_derive::KnownLayout,zerocopy_derive::Immutable,zerocopy_derive::FromBytes,zerocopy_derive::IntoBytes,))]' \
         "$@"
 }
 
diff --git a/patches/0001-fix-add-zerocopy-support-for-__IncompleteArrayField.patch b/patches/0001-fix-add-zerocopy-support-for-__IncompleteArrayField.patch
index b9f1452..0c814fd 100644
--- a/patches/0001-fix-add-zerocopy-support-for-__IncompleteArrayField.patch
+++ b/patches/0001-fix-add-zerocopy-support-for-__IncompleteArrayField.patch
@@ -1,7 +1,7 @@
 diff --git a/src/linux.rs b/src/linux.rs
 --- a/src/linux.rs
 +++ b/src/linux.rs
-@@ -1,7 +1,15 @@
+@@ -1,7 +1,16 @@
  /* automatically generated by rust-bindgen 0.70.1 */
  
 -#[repr(C)]
@@ -10,9 +10,10 @@ diff --git a/src/linux.rs b/src/linux.rs
 +#[cfg_attr(
 +    feature = "zerocopy",
 +    derive(
-+        zerocopy_derive::FromZeroes,
++        zerocopy_derive::KnownLayout,
++        zerocopy_derive::Immutable,
 +        zerocopy_derive::FromBytes,
-+        zerocopy_derive::AsBytes,
++        zerocopy_derive::IntoBytes,
 +    )
 +)]
  pub struct __IncompleteArrayField<T>(::core::marker::PhantomData<T>, [T; 0]);
@@ -21,7 +22,7 @@ diff --git a/src/linux.rs b/src/linux.rs
 diff --git a/src/macos.rs b/src/macos.rs
 --- a/src/macos.rs
 +++ b/src/macos.rs
-@@ -1,7 +1,15 @@
+@@ -1,7 +1,16 @@
  /* automatically generated by rust-bindgen 0.70.1 */
  
 -#[repr(C)]
@@ -30,9 +31,10 @@ diff --git a/src/macos.rs b/src/macos.rs
 +#[cfg_attr(
 +    feature = "zerocopy",
 +    derive(
-+        zerocopy_derive::FromZeroes,
++        zerocopy_derive::KnownLayout,
++        zerocopy_derive::Immutable,
 +        zerocopy_derive::FromBytes,
-+        zerocopy_derive::AsBytes,
++        zerocopy_derive::IntoBytes,
 +    )
 +)]
  pub struct __IncompleteArrayField<T>(::core::marker::PhantomData<T>, [T; 0]);
diff --git a/src/lib.rs b/src/lib.rs
index eaa952e..db40ea9 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -12,9 +12,10 @@
 //!   - [`num_enum::TryFromPrimitive`]
 //!   - [`num_enum::UnsafeFromPrimitive`]
 //! - `zerocopy` derives the following traits for all structs:
-//!   - [`zerocopy::FromZeroes`]
+//!   - [`zerocopy::KnownLayout`]
+//!   - [`zerocopy::Immutable`]
 //!   - [`zerocopy::FromBytes`]
-//!   - [`zerocopy::AsBytes`]
+//!   - [`zerocopy::IntoBytes`]
 
 #![no_std]
 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
diff --git a/src/linux.rs b/src/linux.rs
index 14783ea..8739ee5 100644
--- a/src/linux.rs
+++ b/src/linux.rs
@@ -5,9 +5,10 @@
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct __IncompleteArrayField<T>(::core::marker::PhantomData<T>, [T; 0]);
@@ -145,9 +146,10 @@ pub const FUSE_SETUPMAPPING_FLAG_READ: u32 = 2;
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_attr {
@@ -197,9 +199,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_sx_time {
@@ -223,9 +226,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_statx {
@@ -290,9 +294,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_kstatfs {
@@ -336,9 +341,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_file_lock {
@@ -469,9 +475,10 @@ pub enum fuse_notify_code {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_entry_out {
@@ -507,9 +514,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_forget_in {
@@ -527,9 +535,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_forget_one {
@@ -550,9 +559,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_batch_forget_in {
@@ -573,9 +583,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_getattr_in {
@@ -598,9 +609,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_attr_out {
@@ -627,9 +639,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_statx_in {
@@ -658,9 +671,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_statx_out {
@@ -690,9 +704,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_mknod_in {
@@ -717,9 +732,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_mkdir_in {
@@ -739,9 +755,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_rename_in {
@@ -759,9 +776,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_rename2_in {
@@ -785,9 +803,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_link_in {
@@ -805,9 +824,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_setattr_in {
@@ -869,9 +889,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_open_in {
@@ -891,9 +912,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_create_in {
@@ -920,9 +942,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_open_out {
@@ -945,9 +968,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_release_in {
@@ -973,9 +997,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_flush_in {
@@ -1001,9 +1026,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_read_in {
@@ -1037,9 +1063,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_write_in {
@@ -1074,9 +1101,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_write_out {
@@ -1097,9 +1125,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_statfs_out {
@@ -1116,9 +1145,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_fsync_in {
@@ -1141,9 +1171,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_setxattr_in {
@@ -1170,9 +1201,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_getxattr_in {
@@ -1193,9 +1225,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_getxattr_out {
@@ -1216,9 +1249,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_lk_in {
@@ -1245,9 +1279,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_lk_out {
@@ -1264,9 +1299,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_access_in {
@@ -1287,9 +1323,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_init_in {
@@ -1320,9 +1357,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_init_out {
@@ -1376,9 +1414,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct cuse_init_in {
@@ -1403,9 +1442,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct cuse_init_out {
@@ -1447,9 +1487,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_interrupt_in {
@@ -1467,9 +1508,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_bmap_in {
@@ -1492,9 +1534,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_bmap_out {
@@ -1512,9 +1555,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_ioctl_in {
@@ -1544,9 +1588,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_ioctl_iovec {
@@ -1567,9 +1612,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_ioctl_out {
@@ -1596,9 +1642,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_poll_in {
@@ -1623,9 +1670,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_poll_out {
@@ -1646,9 +1694,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_poll_wakeup_out {
@@ -1668,9 +1717,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_fallocate_in {
@@ -1700,9 +1750,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_in_header {
@@ -1743,9 +1794,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_out_header {
@@ -1769,9 +1821,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_dirent {
@@ -1797,9 +1850,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_direntplus {
@@ -1820,9 +1874,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_inval_inode_out {
@@ -1848,9 +1903,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_inval_entry_out {
@@ -1876,9 +1932,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_delete_out {
@@ -1906,9 +1963,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_store_out {
@@ -1936,9 +1994,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_retrieve_out {
@@ -1970,9 +2029,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_retrieve_in {
@@ -2007,9 +2067,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_backing_map {
@@ -2033,9 +2094,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_lseek_in {
@@ -2061,9 +2123,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_lseek_out {
@@ -2081,9 +2144,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_copy_file_range_in {
@@ -2121,9 +2185,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_setupmapping_in {
@@ -2153,9 +2218,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_removemapping_in {
@@ -2174,9 +2240,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_removemapping_one {
@@ -2198,9 +2265,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_syncfs_in {
@@ -2218,9 +2286,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_secctx {
@@ -2240,9 +2309,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_secctx_header {
@@ -2269,9 +2339,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_ext_header {
@@ -2295,9 +2366,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_supp_groups {
diff --git a/src/macos.rs b/src/macos.rs
index 6529f19..b810e6f 100644
--- a/src/macos.rs
+++ b/src/macos.rs
@@ -5,9 +5,10 @@
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct __IncompleteArrayField<T>(::core::marker::PhantomData<T>, [T; 0]);
@@ -105,9 +106,10 @@ pub const CUSE_INIT_INFO_MAX: u32 = 4096;
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_attr {
@@ -164,9 +166,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_kstatfs {
@@ -210,9 +213,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_file_lock {
@@ -316,9 +320,10 @@ pub enum fuse_notify_code {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_entry_out {
@@ -354,9 +359,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_forget_in {
@@ -374,9 +380,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_forget_one {
@@ -397,9 +404,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_batch_forget_in {
@@ -420,9 +428,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_getattr_in {
@@ -445,9 +454,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_attr_out {
@@ -474,9 +484,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_getxtimes_out {
@@ -503,9 +514,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_mknod_in {
@@ -530,9 +542,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_mkdir_in {
@@ -552,9 +565,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_rename_in {
@@ -578,9 +592,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_exchange_in {
@@ -604,9 +619,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_link_in {
@@ -624,9 +640,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_setattr_in {
@@ -709,9 +726,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_open_in {
@@ -731,9 +749,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_create_in {
@@ -760,9 +779,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_open_out {
@@ -785,9 +805,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_release_in {
@@ -813,9 +834,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_flush_in {
@@ -841,9 +863,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_read_in {
@@ -877,9 +900,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_write_in {
@@ -914,9 +938,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_write_out {
@@ -937,9 +962,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_statfs_out {
@@ -956,9 +982,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_fsync_in {
@@ -981,9 +1008,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_setxattr_in {
@@ -1010,9 +1038,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_getxattr_in {
@@ -1039,9 +1068,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_getxattr_out {
@@ -1062,9 +1092,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_lk_in {
@@ -1091,9 +1122,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_lk_out {
@@ -1110,9 +1142,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_access_in {
@@ -1133,9 +1166,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_init_in {
@@ -1160,9 +1194,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_init_out {
@@ -1198,9 +1233,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct cuse_init_in {
@@ -1225,9 +1261,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct cuse_init_out {
@@ -1269,9 +1306,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_interrupt_in {
@@ -1289,9 +1327,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_bmap_in {
@@ -1314,9 +1353,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_bmap_out {
@@ -1334,9 +1374,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_ioctl_in {
@@ -1366,9 +1407,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_ioctl_iovec {
@@ -1389,9 +1431,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_ioctl_out {
@@ -1418,9 +1461,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_poll_in {
@@ -1445,9 +1489,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_poll_out {
@@ -1468,9 +1513,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_poll_wakeup_out {
@@ -1490,9 +1536,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_fallocate_in {
@@ -1522,9 +1569,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_in_header {
@@ -1562,9 +1610,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_out_header {
@@ -1588,9 +1637,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_dirent {
@@ -1616,9 +1666,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_inval_inode_out {
@@ -1644,9 +1695,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_inval_entry_out {
@@ -1672,9 +1724,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_delete_out {
@@ -1702,9 +1755,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_store_out {
@@ -1732,9 +1786,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_retrieve_out {
@@ -1766,9 +1821,10 @@ const _: () = {
 #[cfg_attr(
     feature = "zerocopy",
     derive(
-        zerocopy_derive::FromZeroes,
+        zerocopy_derive::KnownLayout,
+        zerocopy_derive::Immutable,
         zerocopy_derive::FromBytes,
-        zerocopy_derive::AsBytes,
+        zerocopy_derive::IntoBytes,
     )
 )]
 pub struct fuse_notify_retrieve_in {