Merge branch '2018' into 'master'

Switch to 2018 edition

See merge request !102

Cargo.toml

@@ -2,6 +2,7 @@
 name = "kernel"
 version = "0.1.54"
 build = "build.rs"
+edition = "2018"
 
 [lib]
 name = "kernel"

src/allocator/linked_list.rs

@@ -3,7 +3,7 @@ use core::ptr::NonNull;
 use linked_list_allocator::Heap;
 use spin::Mutex;
 
-use paging::ActivePageTable;
+use crate::paging::ActivePageTable;
 
 static HEAP: Mutex<Option<Heap>> = Mutex::new(None);
 
@@ -32,10 +32,10 @@ unsafe impl GlobalAlloc for Allocator {
                         panic!("__rust_allocate: heap not initialized");
                     };
 
-                    super::map_heap(&mut ActivePageTable::new(), ::KERNEL_HEAP_OFFSET + size, ::KERNEL_HEAP_SIZE);
+                    super::map_heap(&mut ActivePageTable::new(), crate::KERNEL_HEAP_OFFSET + size, crate::KERNEL_HEAP_SIZE);
 
                     if let Some(ref mut heap) = *HEAP.lock() {
-                        heap.extend(::KERNEL_HEAP_SIZE);
+                        heap.extend(crate::KERNEL_HEAP_SIZE);
                     } else {
                         panic!("__rust_allocate: heap not initialized");
                     }

src/allocator/mod.rs

-use paging::{ActivePageTable, Page, VirtualAddress};
-use paging::entry::EntryFlags;
-use paging::mapper::MapperFlushAll;
+use crate::paging::{ActivePageTable, Page, VirtualAddress};
+use crate::paging::entry::EntryFlags;
+use crate::paging::mapper::MapperFlushAll;
 
 #[cfg(not(feature="slab"))]
 pub use self::linked_list::Allocator;
@@ -28,8 +28,8 @@ unsafe fn map_heap(active_table: &mut ActivePageTable, offset: usize, size: usiz
 }
 
 pub unsafe fn init(active_table: &mut ActivePageTable) {
-    let offset = ::KERNEL_HEAP_OFFSET;
-    let size = ::KERNEL_HEAP_SIZE;
+    let offset = crate::KERNEL_HEAP_OFFSET;
+    let size = crate::KERNEL_HEAP_SIZE;
 
     // Map heap pages
     map_heap(active_table, offset, size);

src/arch/x86_64/debug.rs

@@ -3,12 +3,12 @@ use core::fmt;
 use spin::Mutex;
 use spin::MutexGuard;
 
-use log::{LOG, Log};
+use crate::log::{LOG, Log};
 #[cfg(feature = "qemu_debug")]
 use syscall::io::Io;
-use syscall::io::Pio;
+use crate::syscall::io::Pio;
 #[cfg(feature = "serial_debug")]
-use devices::uart_16550::SerialPort;
+use crate::devices::uart_16550::SerialPort;
 
 #[cfg(feature = "graphical_debug")]
 use super::graphical_debug::{DEBUG_DISPLAY, DebugDisplay};

src/arch/x86_64/device/local_apic.rs

@@ -2,9 +2,9 @@ use core::intrinsics::{volatile_load, volatile_store};
 use x86::shared::cpuid::CpuId;
 use x86::shared::msr::*;
 
-use memory::Frame;
-use paging::{ActivePageTable, PhysicalAddress, Page, VirtualAddress};
-use paging::entry::EntryFlags;
+use crate::memory::Frame;
+use crate::paging::{ActivePageTable, PhysicalAddress, Page, VirtualAddress};
+use crate::paging::entry::EntryFlags;
 
 pub static mut LOCAL_APIC: LocalApic = LocalApic {
     address: 0,
@@ -27,12 +27,12 @@ pub struct LocalApic {
 
 impl LocalApic {
     unsafe fn init(&mut self, active_table: &mut ActivePageTable) {
-        self.address = (rdmsr(IA32_APIC_BASE) as usize & 0xFFFF_0000) + ::KERNEL_OFFSET;
+        self.address = (rdmsr(IA32_APIC_BASE) as usize & 0xFFFF_0000) + crate::KERNEL_OFFSET;
         self.x2 = CpuId::new().get_feature_info().unwrap().has_x2apic();
 
         if ! self.x2 {
             let page = Page::containing_address(VirtualAddress::new(self.address));
-            let frame = Frame::containing_address(PhysicalAddress::new(self.address - ::KERNEL_OFFSET));
+            let frame = Frame::containing_address(PhysicalAddress::new(self.address - crate::KERNEL_OFFSET));
             let result = active_table.map_to(page, frame, EntryFlags::PRESENT | EntryFlags::WRITABLE | EntryFlags::NO_EXECUTE);
             result.flush(active_table);
         }

src/arch/x86_64/device/mod.rs

-use paging::ActivePageTable;
+use crate::paging::ActivePageTable;
 
 pub mod cpu;
 pub mod local_apic;

src/arch/x86_64/device/pic.rs

-use syscall::io::{Io, Pio};
+use crate::syscall::io::{Io, Pio};
 
 pub static mut MASTER: Pic = Pic::new(0x20);
 pub static mut SLAVE: Pic = Pic::new(0xA0);

src/arch/x86_64/device/pit.rs

-use syscall::io::{Io, Pio};
+use crate::syscall::io::{Io, Pio};
 
 pub static mut CHAN0: Pio<u8> = Pio::new(0x40);
 pub static mut CHAN1: Pio<u8> = Pio::new(0x41);

src/arch/x86_64/device/rtc.rs

-use syscall::io::{Io, Pio};
-use time;
+use crate::syscall::io::{Io, Pio};
+use crate::time;
 
 pub fn init() {
     let mut rtc = Rtc::new();

src/arch/x86_64/device/serial.rs

-use devices::uart_16550::SerialPort;
-use syscall::io::Pio;
+use crate::devices::uart_16550::SerialPort;
+use crate::syscall::io::Pio;
 use spin::Mutex;
 
 pub static COM1: Mutex<SerialPort<Pio<u8>>> = Mutex::new(SerialPort::<Pio<u8>>::new(0x3F8));

src/arch/x86_64/gdt.rs

@@ -8,7 +8,7 @@ use x86::shared::dtables::{self, DescriptorTablePointer};
 use x86::shared::segmentation::{self, SegmentDescriptor, SegmentSelector};
 use x86::shared::task;
 
-use paging::PAGE_SIZE;
+use crate::paging::PAGE_SIZE;
 
 pub const GDT_NULL: usize = 0;
 pub const GDT_KERNEL_CODE: usize = 1;
@@ -94,7 +94,7 @@ pub static mut TSS: TaskStateSegment = TaskStateSegment {
 };
 
 pub unsafe fn set_tcb(pid: usize) {
-    GDT[GDT_USER_TLS].set_offset((::USER_TCB_OFFSET + pid * PAGE_SIZE) as u32);
+    GDT[GDT_USER_TLS].set_offset((crate::USER_TCB_OFFSET + pid * PAGE_SIZE) as u32);
 }
 
 #[cfg(feature = "pti")]

src/arch/x86_64/idt.rs

@@ -2,8 +2,8 @@ use core::mem;
 use x86::current::irq::IdtEntry as X86IdtEntry;
 use x86::shared::dtables::{self, DescriptorTablePointer};
 
-use interrupt::*;
-use ipi::IpiKind;
+use crate::interrupt::*;
+use crate::ipi::IpiKind;
 
 pub static mut INIT_IDTR: DescriptorTablePointer<X86IdtEntry> = DescriptorTablePointer {
     limit: 0,

src/arch/x86_64/interrupt/exception.rs

-use interrupt::stack_trace;
-use syscall::flag::*;
+use crate::interrupt::stack_trace;
+use crate::syscall::flag::*;
 
 extern {
     fn ksignal(signal: usize);

src/arch/x86_64/interrupt/ipi.rs

 use core::sync::atomic::Ordering;
 use x86::shared::tlb;
 
-use context;
-use device::local_apic::LOCAL_APIC;
+use crate::context;
+use crate::device::local_apic::LOCAL_APIC;
 use super::irq::PIT_TICKS;
 
 interrupt!(wakeup, {

src/arch/x86_64/interrupt/irq.rs

 use core::sync::atomic::{AtomicUsize, Ordering};
 
-use context;
-use context::timeout;
-use device::pic;
-use device::serial::{COM1, COM2};
-use ipi::{ipi, IpiKind, IpiTarget};
-use scheme::debug::debug_input;
-use time;
+use crate::context;
+use crate::context::timeout;
+use crate::device::pic;
+use crate::device::serial::{COM1, COM2};
+use crate::ipi::{ipi, IpiKind, IpiTarget};
+use crate::scheme::debug::debug_input;
+use crate::time;
 
 //resets to 0 in context::switch()
 pub static PIT_TICKS: AtomicUsize = AtomicUsize::new(0);

src/arch/x86_64/interrupt/syscall.rs

-use arch::{gdt, pti};
-use syscall;
+use crate::arch::{gdt, pti};
+use crate::syscall;
 use x86::shared::msr;
 
 pub unsafe fn init() {

src/arch/x86_64/interrupt/trace.rs

@@ -2,7 +2,7 @@ use core::{mem, str};
 use goblin::elf::sym;
 use rustc_demangle::demangle;
 
-use paging::{ActivePageTable, VirtualAddress};
+use crate::paging::{ActivePageTable, VirtualAddress};
 
 /// Get a stack trace
 //TODO: Check for stack being mapped before dereferencing
@@ -43,10 +43,10 @@ pub unsafe fn symbol_trace(addr: usize) {
     use core::slice;
     use core::sync::atomic::Ordering;
 
-    use elf::Elf;
-    use start::{KERNEL_BASE, KERNEL_SIZE};
+    use crate::elf::Elf;
+    use crate::start::{KERNEL_BASE, KERNEL_SIZE};
 
-    let kernel_ptr = (KERNEL_BASE.load(Ordering::SeqCst) + ::KERNEL_OFFSET) as *const u8;
+    let kernel_ptr = (KERNEL_BASE.load(Ordering::SeqCst) + crate::KERNEL_OFFSET) as *const u8;
     let kernel_slice = slice::from_raw_parts(kernel_ptr, KERNEL_SIZE.load(Ordering::SeqCst));
     if let Ok(elf) = Elf::from(kernel_slice) {
         let mut strtab_opt = None;

src/arch/x86_64/paging/entry.rs

 //! # Page table entry
 //! Some code borrowed from [Phil Opp's Blog](http://os.phil-opp.com/modifying-page-tables.html)
 
-use memory::Frame;
+use crate::memory::Frame;
 
 use super::PhysicalAddress;
 

src/arch/x86_64/paging/mapper.rs

 use core::mem;
 use core::ptr::Unique;
 
-use memory::{allocate_frames, deallocate_frames, Frame};
+use crate::memory::{allocate_frames, deallocate_frames, Frame};
 
 use super::{ActivePageTable, Page, PAGE_SIZE, PhysicalAddress, VirtualAddress};
 use super::entry::EntryFlags;

src/arch/x86_64/paging/mod.rs

@@ -5,7 +5,7 @@ use core::{mem, ptr};
 use core::ops::{Deref, DerefMut};
 use x86::shared::{control_regs, msr, tlb};
 
-use memory::{allocate_frames, Frame};
+use crate::memory::{allocate_frames, Frame};
 
 use self::entry::EntryFlags;
 use self::mapper::Mapper;
@@ -63,7 +63,7 @@ unsafe fn init_tcb(cpu_id: usize) -> usize {
         let size = & __tbss_end as *const _ as usize - & __tdata_start as *const _ as usize;
         let tbss_offset = & __tbss_start as *const _ as usize - & __tdata_start as *const _ as usize;
 
-        let start = ::KERNEL_PERCPU_OFFSET + ::KERNEL_PERCPU_SIZE * cpu_id;
+        let start = crate::KERNEL_PERCPU_OFFSET + crate::KERNEL_PERCPU_SIZE * cpu_id;
         let end = start + size;
         tcb_offset = end - mem::size_of::<usize>();
 
@@ -110,7 +110,7 @@ pub unsafe fn init(cpu_id: usize, kernel_start: usize, kernel_end: usize, stack_
 
     let mut active_table = ActivePageTable::new();
 
-    let mut temporary_page = TemporaryPage::new(Page::containing_address(VirtualAddress::new(::USER_TMP_MISC_OFFSET)));
+    let mut temporary_page = TemporaryPage::new(Page::containing_address(VirtualAddress::new(crate::USER_TMP_MISC_OFFSET)));
 
     let mut new_table = {
         let frame = allocate_frames(1).expect("no more frames in paging::init new_table");
@@ -120,10 +120,10 @@ pub unsafe fn init(cpu_id: usize, kernel_start: usize, kernel_end: usize, stack_
     active_table.with(&mut new_table, &mut temporary_page, |mapper| {
         // Remap stack writable, no execute
         {
-            let start_frame = Frame::containing_address(PhysicalAddress::new(stack_start - ::KERNEL_OFFSET));
-            let end_frame = Frame::containing_address(PhysicalAddress::new(stack_end - ::KERNEL_OFFSET - 1));
+            let start_frame = Frame::containing_address(PhysicalAddress::new(stack_start - crate::KERNEL_OFFSET));
+            let end_frame = Frame::containing_address(PhysicalAddress::new(stack_end - crate::KERNEL_OFFSET - 1));
             for frame in Frame::range_inclusive(start_frame, end_frame) {
-                let page = Page::containing_address(VirtualAddress::new(frame.start_address().get() + ::KERNEL_OFFSET));
+                let page = Page::containing_address(VirtualAddress::new(frame.start_address().get() + crate::KERNEL_OFFSET));
                 let result = mapper.map_to(page, frame, EntryFlags::PRESENT | EntryFlags::GLOBAL | EntryFlags::NO_EXECUTE | EntryFlags::WRITABLE);
                 // The flush can be ignored as this is not the active table. See later active_table.switch
                 /* unsafe */ { result.ignore(); }
@@ -136,7 +136,7 @@ pub unsafe fn init(cpu_id: usize, kernel_start: usize, kernel_end: usize, stack_
             let end_frame = Frame::containing_address(PhysicalAddress::new(kernel_end - 1));
             for frame in Frame::range_inclusive(start_frame, end_frame) {
                 let phys_addr = frame.start_address().get();
-                let virt_addr = phys_addr + ::KERNEL_OFFSET;
+                let virt_addr = phys_addr + crate::KERNEL_OFFSET;
 
                 macro_rules! in_section {
                     ($n: ident) => (
@@ -176,7 +176,7 @@ pub unsafe fn init(cpu_id: usize, kernel_start: usize, kernel_end: usize, stack_
         {
             let size = & __tbss_end as *const _ as usize - & __tdata_start as *const _ as usize;
 
-            let start = ::KERNEL_PERCPU_OFFSET + ::KERNEL_PERCPU_SIZE * cpu_id;
+            let start = crate::KERNEL_PERCPU_OFFSET + crate::KERNEL_PERCPU_SIZE * cpu_id;
             let end = start + size;
 
             let start_page = Page::containing_address(VirtualAddress::new(start));
@@ -214,14 +214,14 @@ pub unsafe fn init_ap(cpu_id: usize, bsp_table: usize, stack_start: usize, stack
 
     let mut new_table = InactivePageTable::from_address(bsp_table);
 
-    let mut temporary_page = TemporaryPage::new(Page::containing_address(VirtualAddress::new(::USER_TMP_MISC_OFFSET)));
+    let mut temporary_page = TemporaryPage::new(Page::containing_address(VirtualAddress::new(crate::USER_TMP_MISC_OFFSET)));
 
     active_table.with(&mut new_table, &mut temporary_page, |mapper| {
         // Map tdata and tbss
         {
             let size = & __tbss_end as *const _ as usize - & __tdata_start as *const _ as usize;
 
-            let start = ::KERNEL_PERCPU_OFFSET + ::KERNEL_PERCPU_SIZE * cpu_id;
+            let start = crate::KERNEL_PERCPU_OFFSET + crate::KERNEL_PERCPU_SIZE * cpu_id;
             let end = start + size;
 
             let start_page = Page::containing_address(VirtualAddress::new(start));
@@ -238,7 +238,7 @@ pub unsafe fn init_ap(cpu_id: usize, bsp_table: usize, stack_start: usize, stack
                 let start_frame = Frame::containing_address(PhysicalAddress::new(start));
                 let end_frame = Frame::containing_address(PhysicalAddress::new(end - 1));
                 for frame in Frame::range_inclusive(start_frame, end_frame) {
-                    let page = Page::containing_address(VirtualAddress::new(frame.start_address().get() + ::KERNEL_OFFSET));
+                    let page = Page::containing_address(VirtualAddress::new(frame.start_address().get() + crate::KERNEL_OFFSET));
                     let result = mapper.map_to(page, frame, flags);
                     // The flush can be ignored as this is not the active table. See later active_table.switch
                     result.ignore();
@@ -247,7 +247,7 @@ pub unsafe fn init_ap(cpu_id: usize, bsp_table: usize, stack_start: usize, stack
         };
 
         // Remap stack writable, no execute
-        remap(stack_start - ::KERNEL_OFFSET, stack_end - ::KERNEL_OFFSET, EntryFlags::PRESENT | EntryFlags::GLOBAL | EntryFlags::NO_EXECUTE | EntryFlags::WRITABLE);
+        remap(stack_start - crate::KERNEL_OFFSET, stack_end - crate::KERNEL_OFFSET, EntryFlags::PRESENT | EntryFlags::GLOBAL | EntryFlags::NO_EXECUTE | EntryFlags::WRITABLE);
     });
 
     // This switches the active table, which is setup by the bootloader, to a correct table
@@ -312,14 +312,14 @@ impl ActivePageTable {
             let p4_table = temporary_page.map_table_frame(backup.clone(), EntryFlags::PRESENT | EntryFlags::WRITABLE | EntryFlags::NO_EXECUTE, self);
 
             // overwrite recursive mapping
-            self.p4_mut()[::RECURSIVE_PAGE_PML4].set(table.p4_frame.clone(), EntryFlags::PRESENT | EntryFlags::WRITABLE | EntryFlags::NO_EXECUTE);
+            self.p4_mut()[crate::RECURSIVE_PAGE_PML4].set(table.p4_frame.clone(), EntryFlags::PRESENT | EntryFlags::WRITABLE | EntryFlags::NO_EXECUTE);
             self.flush_all();
 
             // execute f in the new context
             f(self);
 
             // restore recursive mapping to original p4 table
-            p4_table[::RECURSIVE_PAGE_PML4].set(backup, EntryFlags::PRESENT | EntryFlags::WRITABLE | EntryFlags::NO_EXECUTE);
+            p4_table[crate::RECURSIVE_PAGE_PML4].set(backup, EntryFlags::PRESENT | EntryFlags::WRITABLE | EntryFlags::NO_EXECUTE);
             self.flush_all();
         }
 
@@ -342,7 +342,7 @@ impl InactivePageTable {
             // now we are able to zero the table
             table.zero();
             // set up recursive mapping for the table
-            table[::RECURSIVE_PAGE_PML4].set(frame.clone(), EntryFlags::PRESENT | EntryFlags::WRITABLE | EntryFlags::NO_EXECUTE);
+            table[crate::RECURSIVE_PAGE_PML4].set(frame.clone(), EntryFlags::PRESENT | EntryFlags::WRITABLE | EntryFlags::NO_EXECUTE);
         }
         temporary_page.unmap(active_table);
 

src/arch/x86_64/paging/table.rs

@@ -4,12 +4,12 @@
 use core::marker::PhantomData;
 use core::ops::{Index, IndexMut};
 
-use memory::allocate_frames;
+use crate::memory::allocate_frames;
 
 use super::entry::{EntryFlags, Entry};
 use super::ENTRY_COUNT;
 
-pub const P4: *mut Table<Level4> = (::RECURSIVE_PAGE_OFFSET | 0x7ffffff000) as *mut _;
+pub const P4: *mut Table<Level4> = (crate::RECURSIVE_PAGE_OFFSET | 0x7ffffff000) as *mut _;
 
 pub trait TableLevel {}
 

src/arch/x86_64/paging/temporary_page.rs

 //! Temporarily map a page
 //! From [Phil Opp's Blog](http://os.phil-opp.com/remap-the-kernel.html)
 
-use memory::Frame;
+use crate::memory::Frame;
 
 use super::{ActivePageTable, Page, VirtualAddress};
 use super::entry::EntryFlags;

src/arch/x86_64/start.rs

@@ -6,19 +6,19 @@
 use core::slice;
 use core::sync::atomic::{AtomicBool, AtomicUsize, Ordering};
 
-use allocator;
+use crate::allocator;
 #[cfg(feature = "acpi")]
 use acpi;
 #[cfg(feature = "graphical_debug")]
 use arch::x86_64::graphical_debug;
-use arch::x86_64::pti;
-use device;
-use gdt;
-use idt;
-use interrupt;
-use log;
-use memory;
-use paging;
+use crate::arch::x86_64::pti;
+use crate::device;
+use crate::gdt;
+use crate::idt;
+use crate::interrupt;
+use crate::log;
+use crate::memory;
+use crate::paging;
 
 /// Test of zero values in BSS.
 static BSS_TEST_ZERO: usize = 0;
@@ -141,7 +141,7 @@ pub unsafe extern fn kstart(args_ptr: *const KernelArgs) -> ! {
         slice::from_raw_parts(env_base as *const u8, env_size)
     };
 
-    ::kmain(CPU_COUNT.load(Ordering::SeqCst), env);
+    crate::kmain(CPU_COUNT.load(Ordering::SeqCst), env);
 }
 
 #[repr(packed)]
@@ -204,7 +204,7 @@ pub unsafe extern fn kstart_ap(args_ptr: *const KernelArgsAp) -> ! {
         interrupt::pause();
     }
 
-    ::kmain_ap(cpu_id);
+    crate::kmain_ap(cpu_id);
 }
 
 #[naked]

src/arch/x86_64/stop.rs

 #[cfg(feature = "acpi")]
 use acpi;
-use syscall::io::{Io, Pio};
+use crate::syscall::io::{Io, Pio};
 
 #[no_mangle]
 pub unsafe extern fn kreset() -> ! {

src/common/int_like.rs

@@ -29,9 +29,11 @@ macro_rules! int_like {
         pub struct $new_type_name($backing_type);
 
         impl $new_type_name {
+            #[allow(dead_code)]
             pub const fn into(self) -> $backing_type {
                 self.0
             }
+            #[allow(dead_code)]
             pub const fn from(x: $backing_type) -> Self {
                 $new_type_name(x)
             }
@@ -48,17 +50,21 @@ macro_rules! int_like {
         }
 
         impl $new_atomic_type_name {
+            #[allow(dead_code)]
             pub const fn new(x: $new_type_name) -> Self {
                 $new_atomic_type_name {
                     container: $backing_atomic_type::new(x.into())
                 }
             }
+            #[allow(dead_code)]
             pub const fn default() -> Self {
                 Self::new($new_type_name::from(0))
             }
+            #[allow(dead_code)]
             pub fn load(&self, order: ::core::sync::atomic::Ordering) -> $new_type_name {
                 $new_type_name::from(self.container.load(order))
             }
+            #[allow(dead_code)]
             pub fn store(&self, val: $new_type_name, order: ::core::sync::atomic::Ordering) {
                 self.container.store(val.into(), order)
             }
@@ -88,14 +94,13 @@ macro_rules! int_like {
     }
 }
 
-#[cfg(test)]
+#[test]
 fn test() {
     use core::mem::size_of;
     use ::core::sync::atomic::AtomicUsize;
 
     // Generate type `usize_like`.
     int_like!(UsizeLike, usize);
-    const ZERO: UsizeLike = UsizeLike::from(0);
     assert_eq!(size_of::<UsizeLike>(), size_of::<usize>());
 
 

src/context/context.rs

@@ -7,15 +7,15 @@ use core::cmp::Ordering;
 use core::mem;
 use spin::Mutex;
 
-use arch::paging::PAGE_SIZE;
-use context::arch;
-use context::file::FileDescriptor;
-use context::memory::{Grant, Memory, SharedMemory, Tls};
-use ipi::{ipi, IpiKind, IpiTarget};
-use scheme::{SchemeNamespace, FileHandle};
-use syscall::data::SigAction;
-use syscall::flag::SIG_DFL;
-use sync::WaitMap;
+use crate::arch::paging::PAGE_SIZE;
+use crate::context::arch;
+use crate::context::file::FileDescriptor;
+use crate::context::memory::{Grant, Memory, SharedMemory, Tls};
+use crate::ipi::{ipi, IpiKind, IpiTarget};
+use crate::scheme::{SchemeNamespace, FileHandle};
+use crate::syscall::data::SigAction;
+use crate::syscall::flag::SIG_DFL;
+use crate::sync::WaitMap;
 
 /// Unique identifier for a context (i.e. `pid`).
 use ::core::sync::atomic::AtomicUsize;
@@ -169,8 +169,8 @@ pub struct Context {
 
 impl Context {
     pub fn new(id: ContextId) -> Context {
-        let syscall_head = unsafe { Box::from_raw(::ALLOCATOR.alloc(Layout::from_size_align_unchecked(PAGE_SIZE, PAGE_SIZE)) as *mut [u8; PAGE_SIZE]) };
-        let syscall_tail = unsafe { Box::from_raw(::ALLOCATOR.alloc(Layout::from_size_align_unchecked(PAGE_SIZE, PAGE_SIZE)) as *mut [u8; PAGE_SIZE]) };
+        let syscall_head = unsafe { Box::from_raw(crate::ALLOCATOR.alloc(Layout::from_size_align_unchecked(PAGE_SIZE, PAGE_SIZE)) as *mut [u8; PAGE_SIZE]) };
+        let syscall_tail = unsafe { Box::from_raw(crate::ALLOCATOR.alloc(Layout::from_size_align_unchecked(PAGE_SIZE, PAGE_SIZE)) as *mut [u8; PAGE_SIZE]) };
 
         Context {
             id: id,
@@ -304,7 +304,7 @@ impl Context {
             self.status = Status::Runnable;
 
             if let Some(cpu_id) = self.cpu_id {
-               if cpu_id != ::cpu_id() {
+               if cpu_id != crate::cpu_id() {
                     // Send IPI if not on current CPU
                     ipi(IpiKind::Wakeup, IpiTarget::Other);
                }

src/context/file.rs

 //! File structs
 
 use alloc::sync::Arc;
-use event;
+use crate::event;
 use spin::RwLock;
-use scheme::{self, SchemeId};
-use syscall::error::{Result, Error, EBADF};
+use crate::scheme::{self, SchemeId};
+use crate::syscall::error::{Result, Error, EBADF};
 
 /// A file description
 #[derive(Debug)]

src/context/list.rs

@@ -4,10 +4,10 @@ use alloc::collections::BTreeMap;
 use core::alloc::{GlobalAlloc, Layout};
 use core::mem;
 use core::sync::atomic::Ordering;
-use paging;
+use crate::paging;
 use spin::RwLock;
 
-use syscall::error::{Result, Error, EAGAIN};
+use crate::syscall::error::{Result, Error, EAGAIN};
 use super::context::{Context, ContextId};
 
 /// Context list type
@@ -66,7 +66,7 @@ impl ContextList {
         let context_lock = self.new_context()?;
         {
             let mut context = context_lock.write();
-            let mut fx = unsafe { Box::from_raw(::ALLOCATOR.alloc(Layout::from_size_align_unchecked(512, 16)) as *mut [u8; 512]) };
+            let mut fx = unsafe { Box::from_raw(crate::ALLOCATOR.alloc(Layout::from_size_align_unchecked(512, 16)) as *mut [u8; 512]) };
             for b in fx.iter_mut() {
                 *b = 0;
             }

src/context/memory.rs

@@ -3,14 +3,14 @@ use alloc::collections::VecDeque;
 use core::intrinsics;
 use spin::Mutex;
 
-use arch::paging::PAGE_SIZE;
-use context::file::FileDescriptor;
-use ipi::{ipi, IpiKind, IpiTarget};
-use memory::Frame;
-use paging::{ActivePageTable, InactivePageTable, Page, PageIter, PhysicalAddress, VirtualAddress};
-use paging::entry::EntryFlags;
-use paging::mapper::MapperFlushAll;
-use paging::temporary_page::TemporaryPage;
+use crate::arch::paging::PAGE_SIZE;
+use crate::context::file::FileDescriptor;
+use crate::ipi::{ipi, IpiKind, IpiTarget};
+use crate::memory::Frame;
+use crate::paging::{ActivePageTable, InactivePageTable, Page, PageIter, PhysicalAddress, VirtualAddress};
+use crate::paging::entry::EntryFlags;
+use crate::paging::mapper::MapperFlushAll;
+use crate::paging::temporary_page::TemporaryPage;
 
 #[derive(Debug)]
 pub struct Grant {

src/context/mod.rs

@@ -50,7 +50,7 @@ pub fn init() {
     let mut contexts = contexts_mut();
     let context_lock = contexts.new_context().expect("could not initialize first context");
     let mut context = context_lock.write();
-    let mut fx = unsafe { Box::from_raw(::ALLOCATOR.alloc(Layout::from_size_align_unchecked(512, 16)) as *mut [u8; 512]) };
+    let mut fx = unsafe { Box::from_raw(crate::ALLOCATOR.alloc(Layout::from_size_align_unchecked(512, 16)) as *mut [u8; 512]) };
     for b in fx.iter_mut() {
         *b = 0;
     }
@@ -59,7 +59,7 @@ pub fn init() {
     context.kfx = Some(fx);
     context.status = Status::Runnable;
     context.running = true;
-    context.cpu_id = Some(::cpu_id());
+    context.cpu_id = Some(crate::cpu_id());
     CONTEXT_ID.store(context.id, Ordering::SeqCst);
 }
 

src/context/signal.rs

 use alloc::sync::Arc;
 use core::mem;
 
-use context::{contexts, switch, Status, WaitpidKey};
-use start::usermode;
-use syscall;
-use syscall::flag::{SIG_DFL, SIG_IGN, SIGCHLD, SIGCONT, SIGSTOP, SIGTSTP, SIGTTIN, SIGTTOU};
+use crate::context::{contexts, switch, Status, WaitpidKey};
+use crate::start::usermode;
+use crate::syscall;
+use crate::syscall::flag::{SIG_DFL, SIG_IGN, SIGCHLD, SIGCONT, SIGSTOP, SIGTSTP, SIGTTIN, SIGTTOU};
 
 pub extern "C" fn signal_handler(sig: usize) {
     let (action, restorer) = {
@@ -36,7 +36,7 @@ pub extern "C" fn signal_handler(sig: usize) {
 
                     if let Some(parent_lock) = contexts.get(ppid) {
                         let waitpid = {
-                            let mut parent = parent_lock.write();
+                            let parent = parent_lock.write();
                             Arc::clone(&parent.waitpid)
                         };
 
@@ -64,7 +64,7 @@ pub extern "C" fn signal_handler(sig: usize) {
 
                     if let Some(parent_lock) = contexts.get(ppid) {
                         let waitpid = {
-                            let mut parent = parent_lock.write();
+                            let parent = parent_lock.write();
                             Arc::clone(&parent.waitpid)
                         };
 
@@ -90,7 +90,7 @@ pub extern "C" fn signal_handler(sig: usize) {
         // println!("Call {:X}", handler);
 
         unsafe {
-            let mut sp = ::USER_SIGSTACK_OFFSET + ::USER_SIGSTACK_SIZE - 256;
+            let mut sp = crate::USER_SIGSTACK_OFFSET + crate::USER_SIGSTACK_SIZE - 256;
 
             sp = (sp / 16) * 16;
 

src/context/switch.rs

 use core::sync::atomic::Ordering;
 
-use context::{arch, contexts, Context, Status, CONTEXT_ID};
-use context::signal::signal_handler;
-use gdt;
-use interrupt;
-use interrupt::irq::PIT_TICKS;
-use time;
+use crate::context::{arch, contexts, Context, Status, CONTEXT_ID};
+use crate::context::signal::signal_handler;
+use crate::gdt;
+use crate::interrupt;
+use crate::interrupt::irq::PIT_TICKS;
+use crate::time;
 
 unsafe fn update(context: &mut Context, cpu_id: usize) {
     // Take ownership if not already owned
@@ -74,7 +74,7 @@ pub unsafe fn switch() -> bool {