clientmem: move shm mapping into workspace crate

Cargo.lock

@@ -665,6 +665,19 @@ dependencies = [
  "ahash",
 ]
 
+[[package]]
+name = "jay-clientmem"
+version = "0.1.0"
+dependencies = [
+ "jay-cpu-worker",
+ "jay-gfx-types",
+ "jay-tracy",
+ "jay-utils",
+ "log",
+ "thiserror",
+ "uapi",
+]
+
 [[package]]
 name = "jay-cmm"
 version = "0.1.0"
@@ -701,6 +714,7 @@ dependencies = [
  "jay-async-engine",
  "jay-bufio",
  "jay-bugs",
+ "jay-clientmem",
  "jay-cmm",
  "jay-config",
  "jay-cpu-worker",

Cargo.toml

@@ -45,6 +45,7 @@ members = [
     "video-types",
     "gfx-types",
     "theme",
+    "clientmem",
     "pango",
     "libinput",
     "toml-config",
@@ -93,6 +94,7 @@ jay-logger = { version = "0.1.0", path = "logger" }
 jay-video-types = { version = "0.1.0", path = "video-types" }
 jay-gfx-types = { version = "0.1.0", path = "gfx-types" }
 jay-theme = { version = "0.1.0", path = "theme" }
+jay-clientmem = { version = "0.1.0", path = "clientmem" }
 jay-pango = { version = "0.1.0", path = "pango" }
 jay-libinput = { version = "0.1.0", path = "libinput" }
 
@@ -158,4 +160,4 @@ opt-level = 3
 [features]
 rc_tracking = []
 it = ["jay-async-engine/it", "jay-cpu-worker/it"]
-tracy = ["jay-tracy/tracy", "jay-async-engine/tracy", "jay-cpu-worker/tracy"]
+tracy = ["jay-tracy/tracy", "jay-async-engine/tracy", "jay-cpu-worker/tracy", "jay-clientmem/tracy"]

clientmem/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "jay-clientmem"
+version = "0.1.0"
+edition = "2024"
+license = "GPL-3.0-only"
+
+[dependencies]
+jay-cpu-worker = { version = "0.1.0", path = "../cpu-worker" }
+jay-gfx-types = { version = "0.1.0", path = "../gfx-types" }
+jay-tracy = { version = "0.1.0", path = "../tracy" }
+jay-utils = { version = "0.1.0", path = "../utils" }
+
+log = "0.4.20"
+thiserror = "2.0.11"
+uapi = "0.2.13"
+
+[features]
+tracy = ["jay-tracy/tracy"]

clientmem/src/lib.rs

@@ -0,0 +1,331 @@
+use {
+    jay_cpu_worker::{AsyncCpuWork, CpuJob, CpuWork, CpuWorker},
+    jay_gfx_types::{ShmMemory, ShmMemoryBacking},
+    jay_utils::{
+        oserror::{OsError, OsErrorExt2},
+        page_size::page_size,
+        vec_ext::VecExt,
+    },
+    std::{
+        cell::Cell,
+        error::Error,
+        mem::{ManuallyDrop, MaybeUninit},
+        ops::Deref,
+        ptr,
+        rc::Rc,
+        sync::atomic::{Ordering, compiler_fence},
+    },
+    thiserror::Error,
+    uapi::{
+        OwnedFd, Pod,
+        c::{self, raise},
+        ftruncate,
+    },
+};
+
+#[derive(Copy, Clone, Debug)]
+pub struct ClientMemClient<'a> {
+    pub comm: &'a str,
+    pub id: u64,
+}
+
+#[derive(Debug, Error)]
+pub enum ClientMemError {
+    #[error("Could not install the sigbus handler")]
+    SigactionFailed(#[source] jay_utils::oserror::OsError),
+    #[error("A SIGBUS occurred while accessing mapped memory")]
+    Sigbus,
+    #[error("mmap failed")]
+    MmapFailed(#[source] jay_utils::oserror::OsError),
+    #[error("Length was not a multiple of the data element size")]
+    InvalidLength,
+}
+
+pub struct ClientMem {
+    fd: ManuallyDrop<Rc<OwnedFd>>,
+    failed: Cell<bool>,
+    sigbus_impossible: bool,
+    data: *const [Cell<u8>],
+    cpu: Option<Rc<CpuWorker>>,
+}
+
+#[derive(Clone)]
+pub struct ClientMemOffset {
+    mem: Rc<ClientMem>,
+    offset: usize,
+    data: *const [Cell<u8>],
+}
+
+impl ClientMem {
+    pub fn new(
+        fd: &Rc<OwnedFd>,
+        len: usize,
+        read_only: bool,
+        client: Option<ClientMemClient<'_>>,
+        cpu: Option<&Rc<CpuWorker>>,
+        is_udmabuf: bool,
+    ) -> Result<Self, ClientMemError> {
+        Self::new2(fd, len, read_only, client, cpu, c::MAP_SHARED, is_udmabuf)
+    }
+
+    pub fn new_private(
+        fd: &Rc<OwnedFd>,
+        len: usize,
+        read_only: bool,
+        client: Option<ClientMemClient<'_>>,
+        cpu: Option<&Rc<CpuWorker>>,
+    ) -> Result<Self, ClientMemError> {
+        Self::new2(fd, len, read_only, client, cpu, c::MAP_PRIVATE, false)
+    }
+
+    fn new2(
+        fd: &Rc<OwnedFd>,
+        len: usize,
+        read_only: bool,
+        client: Option<ClientMemClient<'_>>,
+        cpu: Option<&Rc<CpuWorker>>,
+        flags: c::c_int,
+        is_udmabuf: bool,
+    ) -> Result<Self, ClientMemError> {
+        let mut sigbus_impossible = is_udmabuf;
+        let mut real_size = None;
+        if !sigbus_impossible
+            && let Ok(seals) = uapi::fcntl_get_seals(fd.raw())
+            && seals & c::F_SEAL_SHRINK != 0
+            && let Ok(stat) = uapi::fstat(fd.raw())
+        {
+            real_size = Some(stat.st_size as usize);
+            sigbus_impossible = stat.st_size as u64 >= len as u64;
+        }
+        if !sigbus_impossible && let Some(client) = client {
+            log::debug!(
+                "Client {} ({}) has created a shm buffer that might cause SIGBUS",
+                client.comm,
+                client.id,
+            );
+        }
+        let len = len.next_multiple_of(page_size());
+        if let Some(real_size) = real_size
+            && real_size < len
+        {
+            let _ = ftruncate(fd.raw(), len as _);
+        }
+        let data = if len == 0 {
+            &mut [][..]
+        } else {
+            let prot = match read_only {
+                true => c::PROT_READ,
+                false => c::PROT_READ | c::PROT_WRITE,
+            };
+            unsafe {
+                let data = c::mmap64(ptr::null_mut(), len, prot, flags, fd.raw(), 0);
+                if data == c::MAP_FAILED {
+                    return Err(ClientMemError::MmapFailed(OsError::default()));
+                }
+                std::slice::from_raw_parts_mut(data as *mut Cell<u8>, len)
+            }
+        };
+        Ok(Self {
+            fd: ManuallyDrop::new(fd.clone()),
+            failed: Cell::new(false),
+            sigbus_impossible,
+            data,
+            cpu: cpu.cloned(),
+        })
+    }
+
+    pub fn len(&self) -> usize {
+        self.data.len()
+    }
+
+    pub fn offset(self: &Rc<Self>, offset: usize, len: usize) -> ClientMemOffset {
+        let mem = unsafe { &*self.data };
+        ClientMemOffset {
+            mem: self.clone(),
+            offset,
+            data: &mem[offset..][..len],
+        }
+    }
+
+    pub fn fd(&self) -> &Rc<OwnedFd> {
+        &self.fd
+    }
+
+    pub fn is_sealed_memfd(&self) -> bool {
+        self.sigbus_impossible
+    }
+}
+
+impl ClientMemOffset {
+    pub fn pool(&self) -> &ClientMem {
+        &self.mem
+    }
+
+    pub fn offset(&self) -> usize {
+        self.offset
+    }
+
+    pub fn ptr(&self) -> *const [Cell<u8>] {
+        self.data
+    }
+
+    pub fn access<T, F: FnOnce(&[Cell<u8>]) -> T>(&self, f: F) -> Result<T, ClientMemError> {
+        unsafe {
+            if self.mem.sigbus_impossible {
+                return Ok(f(&*self.data));
+            }
+            let mref = MemRef {
+                mem: &*self.mem,
+                outer: MEM.get(),
+            };
+            MEM.set(&mref);
+            compiler_fence(Ordering::SeqCst);
+            let res = f(&*self.data);
+            MEM.set(mref.outer);
+            compiler_fence(Ordering::SeqCst);
+            match self.mem.failed.get() {
+                true => Err(ClientMemError::Sigbus),
+                _ => Ok(res),
+            }
+        }
+    }
+
+    pub fn read<T: Pod>(&self, dst: &mut Vec<T>) -> Result<(), ClientMemError> {
+        if self.data.len().checked_rem(std::mem::size_of::<T>()) != Some(0) {
+            return Err(ClientMemError::InvalidLength);
+        }
+        self.access(|v| {
+            let len_elements = v.len() / std::mem::size_of::<T>();
+            dst.reserve(len_elements);
+            let (_, unused) = dst.split_at_spare_mut_bytes_ext();
+            unused[..v.len()].copy_from_slice(uapi::as_maybe_uninit_bytes(v));
+            unsafe {
+                dst.set_len(dst.len() + len_elements);
+            }
+        })
+    }
+}
+
+impl Drop for ClientMem {
+    fn drop(&mut self) {
+        let fd = unsafe { ManuallyDrop::take(&mut self.fd) };
+        if let Some(cpu) = &self.cpu {
+            let pending = cpu.submit(Box::new(CloseMemWork {
+                fd: Rc::try_unwrap(fd).ok(),
+                data: self.data,
+            }));
+            pending.detach();
+        } else {
+            unsafe {
+                c::munmap(self.data as _, self.len());
+            }
+        }
+    }
+}
+
+struct MemRef {
+    mem: *const ClientMem,
+    outer: *const MemRef,
+}
+
+thread_local! {
+    static MEM: Cell<*const MemRef> = const { Cell::new(ptr::null()) };
+}
+
+unsafe fn kill() -> ! {
+    unsafe {
+        c::signal(c::SIGBUS, c::SIG_DFL);
+        raise(c::SIGBUS);
+    }
+    unreachable!();
+}
+
+unsafe extern "C" fn sigbus(sig: i32, info: &c::siginfo_t, _ucontext: *mut c::c_void) {
+    unsafe {
+        assert_eq!(sig, c::SIGBUS);
+        let mut memr_ptr = MEM.get();
+        while !memr_ptr.is_null() {
+            let memr = &*memr_ptr;
+            let mem = &*memr.mem;
+            let lo = mem.data as *mut u8 as usize;
+            let hi = lo + mem.len();
+            let fault_addr = info.si_addr() as usize;
+            if fault_addr < lo || fault_addr >= hi {
+                memr_ptr = memr.outer;
+                continue;
+            }
+            let res = c::mmap64(
+                lo as _,
+                hi - lo,
+                c::PROT_WRITE | c::PROT_READ,
+                c::MAP_ANONYMOUS | c::MAP_PRIVATE | c::MAP_FIXED,
+                -1,
+                0,
+            );
+            if res == c::MAP_FAILED {
+                kill();
+            }
+            mem.failed.set(true);
+            return;
+        }
+        kill();
+    }
+}
+
+pub fn init() -> Result<(), ClientMemError> {
+    unsafe {
+        let mut action: c::sigaction = MaybeUninit::zeroed().assume_init();
+        action.sa_sigaction =
+            sigbus as unsafe extern "C" fn(i32, &c::siginfo_t, *mut c::c_void) as _;
+        action.sa_flags = c::SA_NODEFER | c::SA_SIGINFO;
+        let res = c::sigaction(c::SIGBUS, &action, ptr::null_mut());
+        uapi::map_err!(res)
+            .map(drop)
+            .map_os_err(ClientMemError::SigactionFailed)
+    }
+}
+
+struct CloseMemWork {
+    fd: Option<OwnedFd>,
+    data: *const [Cell<u8>],
+}
+
+unsafe impl Send for CloseMemWork {}
+
+impl CpuJob for CloseMemWork {
+    fn work(&mut self) -> &mut dyn CpuWork {
+        self
+    }
+
+    fn completed(self: Box<Self>) {
+        // nothing
+    }
+}
+
+impl CpuWork for CloseMemWork {
+    fn run(&mut self) -> Option<Box<dyn AsyncCpuWork>> {
+        jay_tracy::zone!("CloseMemWork");
+        self.fd.take();
+        unsafe {
+            c::munmap(self.data as _, self.data.len());
+        }
+        None
+    }
+}
+
+impl ShmMemory for ClientMemOffset {
+    fn len(&self) -> usize {
+        self.data.len()
+    }
+
+    fn safe_access(&self) -> ShmMemoryBacking {
+        match self.mem.is_sealed_memfd() {
+            true => ShmMemoryBacking::Ptr(self.data),
+            false => ShmMemoryBacking::Fd(self.mem.fd.deref().clone(), self.offset),
+        }
+    }
+
+    fn access(&self, f: &mut dyn FnMut(&[Cell<u8>])) -> Result<(), Box<dyn Error + Sync + Send>> {
+        self.access(f).map_err(|e| e.into())
+    }
+}

src/clientmem.rs

@@ -1,329 +1,8 @@
-use {
+pub use jay_clientmem::*;
-    crate::{
-        client::Client,
-        cpu_worker::{AsyncCpuWork, CpuJob, CpuWork, CpuWorker},
-        gfx_api::{ShmMemory, ShmMemoryBacking},
-        utils::{
-            oserror::{OsError, OsErrorExt2},
-            page_size::page_size,
-            vec_ext::VecExt,
-        },
-    },
-    std::{
-        cell::Cell,
-        error::Error,
-        mem::{ManuallyDrop, MaybeUninit},
-        ops::Deref,
-        ptr,
-        rc::Rc,
-        sync::atomic::{Ordering, compiler_fence},
-    },
-    thiserror::Error,
-    uapi::{
-        OwnedFd, Pod,
-        c::{self, raise},
-        ftruncate,
-    },
-};
 
-#[derive(Debug, Error)]
+pub fn client_mem_client(client: &crate::client::Client) -> ClientMemClient<'_> {
-pub enum ClientMemError {
+    ClientMemClient {
-    #[error("Could not install the sigbus handler")]
+        comm: &client.pid_info.comm,
-    SigactionFailed(#[source] crate::utils::oserror::OsError),
+        id: client.id.raw(),
-    #[error("A SIGBUS occurred while accessing mapped memory")]
-    Sigbus,
-    #[error("mmap failed")]
-    MmapFailed(#[source] crate::utils::oserror::OsError),
-    #[error("Length was not a multiple of the data element size")]
-    InvalidLength,
-}
-
-pub struct ClientMem {
-    fd: ManuallyDrop<Rc<OwnedFd>>,
-    failed: Cell<bool>,
-    sigbus_impossible: bool,
-    data: *const [Cell<u8>],
-    cpu: Option<Rc<CpuWorker>>,
-}
-
-#[derive(Clone)]
-pub struct ClientMemOffset {
-    mem: Rc<ClientMem>,
-    offset: usize,
-    data: *const [Cell<u8>],
-}
-
-impl ClientMem {
-    pub fn new(
-        fd: &Rc<OwnedFd>,
-        len: usize,
-        read_only: bool,
-        client: Option<&Client>,
-        cpu: Option<&Rc<CpuWorker>>,
-        is_udmabuf: bool,
-    ) -> Result<Self, ClientMemError> {
-        Self::new2(fd, len, read_only, client, cpu, c::MAP_SHARED, is_udmabuf)
-    }
-
-    pub fn new_private(
-        fd: &Rc<OwnedFd>,
-        len: usize,
-        read_only: bool,
-        client: Option<&Client>,
-        cpu: Option<&Rc<CpuWorker>>,
-    ) -> Result<Self, ClientMemError> {
-        Self::new2(fd, len, read_only, client, cpu, c::MAP_PRIVATE, false)
-    }
-
-    fn new2(
-        fd: &Rc<OwnedFd>,
-        len: usize,
-        read_only: bool,
-        client: Option<&Client>,
-        cpu: Option<&Rc<CpuWorker>>,
-        flags: c::c_int,
-        is_udmabuf: bool,
-    ) -> Result<Self, ClientMemError> {
-        let mut sigbus_impossible = is_udmabuf;
-        let mut real_size = None;
-        if !sigbus_impossible
-            && let Ok(seals) = uapi::fcntl_get_seals(fd.raw())
-            && seals & c::F_SEAL_SHRINK != 0
-            && let Ok(stat) = uapi::fstat(fd.raw())
-        {
-            real_size = Some(stat.st_size as usize);
-            sigbus_impossible = stat.st_size as u64 >= len as u64;
-        }
-        if !sigbus_impossible && let Some(client) = client {
-            log::debug!(
-                "Client {} ({}) has created a shm buffer that might cause SIGBUS",
-                client.pid_info.comm,
-                client.id,
-            );
-        }
-        let len = len.next_multiple_of(page_size());
-        if let Some(real_size) = real_size
-            && real_size < len
-        {
-            let _ = ftruncate(fd.raw(), len as _);
-        }
-        let data = if len == 0 {
-            &mut [][..]
-        } else {
-            let prot = match read_only {
-                true => c::PROT_READ,
-                false => c::PROT_READ | c::PROT_WRITE,
-            };
-            unsafe {
-                let data = c::mmap64(ptr::null_mut(), len, prot, flags, fd.raw(), 0);
-                if data == c::MAP_FAILED {
-                    return Err(ClientMemError::MmapFailed(OsError::default()));
-                }
-                std::slice::from_raw_parts_mut(data as *mut Cell<u8>, len)
-            }
-        };
-        Ok(Self {
-            fd: ManuallyDrop::new(fd.clone()),
-            failed: Cell::new(false),
-            sigbus_impossible,
-            data,
-            cpu: cpu.cloned(),
-        })
-    }
-
-    pub fn len(&self) -> usize {
-        self.data.len()
-    }
-
-    pub fn offset(self: &Rc<Self>, offset: usize, len: usize) -> ClientMemOffset {
-        let mem = unsafe { &*self.data };
-        ClientMemOffset {
-            mem: self.clone(),
-            offset,
-            data: &mem[offset..][..len],
-        }
-    }
-
-    pub fn fd(&self) -> &Rc<OwnedFd> {
-        &self.fd
-    }
-
-    pub fn is_sealed_memfd(&self) -> bool {
-        self.sigbus_impossible
-    }
-}
-
-impl ClientMemOffset {
-    pub fn pool(&self) -> &ClientMem {
-        &self.mem
-    }
-
-    pub fn offset(&self) -> usize {
-        self.offset
-    }
-
-    #[expect(dead_code)]
-    pub fn ptr(&self) -> *const [Cell<u8>] {
-        self.data
-    }
-
-    pub fn access<T, F: FnOnce(&[Cell<u8>]) -> T>(&self, f: F) -> Result<T, ClientMemError> {
-        unsafe {
-            if self.mem.sigbus_impossible {
-                return Ok(f(&*self.data));
-            }
-            let mref = MemRef {
-                mem: &*self.mem,
-                outer: MEM.get(),
-            };
-            MEM.set(&mref);
-            compiler_fence(Ordering::SeqCst);
-            let res = f(&*self.data);
-            MEM.set(mref.outer);
-            compiler_fence(Ordering::SeqCst);
-            match self.mem.failed.get() {
-                true => Err(ClientMemError::Sigbus),
-                _ => Ok(res),
-            }
-        }
-    }
-
-    pub fn read<T: Pod>(&self, dst: &mut Vec<T>) -> Result<(), ClientMemError> {
-        if self.data.len().checked_rem(std::mem::size_of::<T>()) != Some(0) {
-            return Err(ClientMemError::InvalidLength);
-        }
-        self.access(|v| {
-            let len_elements = v.len() / std::mem::size_of::<T>();
-            dst.reserve(len_elements);
-            let (_, unused) = dst.split_at_spare_mut_bytes_ext();
-            unused[..v.len()].copy_from_slice(uapi::as_maybe_uninit_bytes(v));
-            unsafe {
-                dst.set_len(dst.len() + len_elements);
-            }
-        })
-    }
-}
-
-impl Drop for ClientMem {
-    fn drop(&mut self) {
-        let fd = unsafe { ManuallyDrop::take(&mut self.fd) };
-        if let Some(cpu) = &self.cpu {
-            let pending = cpu.submit(Box::new(CloseMemWork {
-                fd: Rc::try_unwrap(fd).ok(),
-                data: self.data,
-            }));
-            pending.detach();
-        } else {
-            unsafe {
-                c::munmap(self.data as _, self.len());
-            }
-        }
-    }
-}
-
-struct MemRef {
-    mem: *const ClientMem,
-    outer: *const MemRef,
-}
-
-thread_local! {
-    static MEM: Cell<*const MemRef> = const { Cell::new(ptr::null()) };
-}
-
-unsafe fn kill() -> ! {
-    unsafe {
-        c::signal(c::SIGBUS, c::SIG_DFL);
-        raise(c::SIGBUS);
-    }
-    unreachable!();
-}
-
-unsafe extern "C" fn sigbus(sig: i32, info: &c::siginfo_t, _ucontext: *mut c::c_void) {
-    unsafe {
-        assert_eq!(sig, c::SIGBUS);
-        let mut memr_ptr = MEM.get();
-        while !memr_ptr.is_null() {
-            let memr = &*memr_ptr;
-            let mem = &*memr.mem;
-            let lo = mem.data as *mut u8 as usize;
-            let hi = lo + mem.len();
-            let fault_addr = info.si_addr() as usize;
-            if fault_addr < lo || fault_addr >= hi {
-                memr_ptr = memr.outer;
-                continue;
-            }
-            let res = c::mmap64(
-                lo as _,
-                hi - lo,
-                c::PROT_WRITE | c::PROT_READ,
-                c::MAP_ANONYMOUS | c::MAP_PRIVATE | c::MAP_FIXED,
-                -1,
-                0,
-            );
-            if res == c::MAP_FAILED {
-                kill();
-            }
-            mem.failed.set(true);
-            return;
-        }
-        kill();
-    }
-}
-
-pub fn init() -> Result<(), ClientMemError> {
-    unsafe {
-        let mut action: c::sigaction = MaybeUninit::zeroed().assume_init();
-        action.sa_sigaction =
-            sigbus as unsafe extern "C" fn(i32, &c::siginfo_t, *mut c::c_void) as _;
-        action.sa_flags = c::SA_NODEFER | c::SA_SIGINFO;
-        let res = c::sigaction(c::SIGBUS, &action, ptr::null_mut());
-        uapi::map_err!(res)
-            .map(drop)
-            .map_os_err(ClientMemError::SigactionFailed)
-    }
-}
-
-struct CloseMemWork {
-    fd: Option<OwnedFd>,
-    data: *const [Cell<u8>],
-}
-
-unsafe impl Send for CloseMemWork {}
-
-impl CpuJob for CloseMemWork {
-    fn work(&mut self) -> &mut dyn CpuWork {
-        self
-    }
-
-    fn completed(self: Box<Self>) {
-        // nothing
-    }
-}
-
-impl CpuWork for CloseMemWork {
-    fn run(&mut self) -> Option<Box<dyn AsyncCpuWork>> {
-        zone!("CloseMemWork");
-        self.fd.take();
-        unsafe {
-            c::munmap(self.data as _, self.data.len());
-        }
-        None
-    }
-}
-
-impl ShmMemory for ClientMemOffset {
-    fn len(&self) -> usize {
-        self.data.len()
-    }
-
-    fn safe_access(&self) -> ShmMemoryBacking {
-        match self.mem.is_sealed_memfd() {
-            true => ShmMemoryBacking::Ptr(self.data),
-            false => ShmMemoryBacking::Fd(self.mem.fd.deref().clone(), self.offset),
-        }
-    }
-
-    fn access(&self, f: &mut dyn FnMut(&[Cell<u8>])) -> Result<(), Box<dyn Error + Sync + Send>> {
-        self.access(f).map_err(|e| e.into())
     }
 }

src/ifs/jay_input.rs

@@ -4,7 +4,7 @@ use {
             InputDeviceAccelProfile, InputDeviceCapability, InputDeviceClickMethod, InputDeviceId,
         },
         client::{Client, ClientError},
-        clientmem::{ClientMem, ClientMemError},
+        clientmem::{ClientMem, ClientMemError, client_mem_client},
         ifs::wl_seat::WlSeatGlobal,
         kbvm::{KbvmError, KbvmMap},
         leaks::Tracker,
@@ -204,7 +204,7 @@ impl JayInput {
             keymap,
             len,
             true,
-            Some(&self.client),
+            Some(client_mem_client(&self.client)),
             None,
         )?)
         .offset(0, len);

src/ifs/wl_seat/zwp_virtual_keyboard_v1.rs

@@ -2,7 +2,7 @@ use {
     crate::{
         backend::KeyState,
         client::{Client, ClientError},
-        clientmem::{ClientMem, ClientMemError},
+        clientmem::{ClientMem, ClientMemError, client_mem_client},
         ifs::{
             wl_seat::{
                 WlSeatGlobal,
@@ -59,7 +59,8 @@ impl ZwpVirtualKeyboardV1RequestHandler for ZwpVirtualKeyboardV1 {
             return Err(ZwpVirtualKeyboardV1Error::OversizedKeymap);
         }
         let size = req.size as usize - 1;
-        let client_mem = ClientMem::new_private(&req.fd, size, true, Some(&self.client), None)
+        let client_mem =
+            ClientMem::new_private(&req.fd, size, true, Some(client_mem_client(&self.client)), None)
             .map(Rc::new)
             .map_err(ZwpVirtualKeyboardV1Error::MapKeymap)?;
         let mut map = vec![];

src/ifs/wl_shm_pool.rs

@@ -1,7 +1,7 @@
 use {
     crate::{
         client::{Client, ClientError},
-        clientmem::{ClientMem, ClientMemError},
+        clientmem::{ClientMem, ClientMemError, client_mem_client},
         format::{formats, map_wayland_format_id},
         ifs::wl_buffer::{WlBuffer, WlBufferError},
         leaks::Tracker,
@@ -40,7 +40,7 @@ impl WlShmPool {
                 &fd,
                 len,
                 false,
-                Some(client),
+                Some(client_mem_client(client)),
                 Some(&client.state.cpu_worker),
                 false,
             )?)),
@@ -97,7 +97,7 @@ impl WlShmPoolRequestHandler for WlShmPool {
             &self.fd,
             len,
             false,
-            Some(&self.client),
+            Some(client_mem_client(&self.client)),
             Some(&self.client.state.cpu_worker),
             false,
         )?));

src/ifs/zwlr_gamma_control_v1.rs

@@ -2,7 +2,7 @@ use {
     crate::{
         backend::{BackendGammaLut, BackendGammaLutElement},
         client::{Client, ClientError, ClientId},
-        clientmem::{ClientMem, ClientMemError},
+        clientmem::{ClientMem, ClientMemError, client_mem_client},
         ifs::{
             wl_output::OutputGlobalOpt, zwlr_gamma_control_manager_v1::ZwlrGammaControlManagerV1,
         },
@@ -119,7 +119,7 @@ impl ZwlrGammaControlV1RequestHandler for ZwlrGammaControlV1 {
             &req.fd,
             data_size,
             true,
-            Some(&self.client),
+            Some(client_mem_client(&self.client)),
             None,
         )?)
         .offset(0, data_size)

src/ifs/zwp_linux_buffer_params_v1.rs

@@ -1,7 +1,7 @@
 use {
     crate::{
         client::ClientError,
-        clientmem::{ClientMem, ClientMemError},
+        clientmem::{ClientMem, ClientMemError, client_mem_client},
         gfx_api::GfxError,
         ifs::{
             wl_buffer::{WlBuffer, WlBufferError},
@@ -119,7 +119,7 @@ impl ZwpLinuxBufferParamsV1 {
                 &p.fd,
                 size,
                 true,
-                Some(&self.parent.client),
+                Some(client_mem_client(&self.parent.client)),
                 Some(&self.parent.client.state.cpu_worker),
                 true,
             )