spdx

include/common/compiler.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 // Attributes that affect data layout.

include/common/elf.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #include <stdint.h>

include/common/utils.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
 #define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0]))

include/zinnia/archctl.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #ifndef ZINNIA_ARCHCTL_H
 #define ZINNIA_ARCHCTL_H
 

include/zinnia/channel.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #ifndef ZINNIA_CHANNEL_H
 #define ZINNIA_CHANNEL_H
 

include/zinnia/futex.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #ifndef ZINNIA_FUTEX_H
 #define ZINNIA_FUTEX_H
 

include/zinnia/handle.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #ifndef ZINNIA_HANDLE_H
 #define ZINNIA_HANDLE_H
 

include/zinnia/mem.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #ifndef ZINNIA_MEM_H
 #define ZINNIA_MEM_H
 

include/zinnia/namespace.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #ifndef ZINNIA_NAMESPACE_H
 #define ZINNIA_NAMESPACE_H
 

include/zinnia/random.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #ifndef ZINNIA_RANDOM_H
 #define ZINNIA_RANDOM_H
 

include/zinnia/rights.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #ifndef ZINNIA_RIGHTS_H
 #define ZINNIA_RIGHTS_H
 

include/zinnia/status.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #ifndef ZINNIA_STATUS_H
 #define ZINNIA_STATUS_H
 

include/zinnia/system.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #ifndef ZINNIA_SYSTEM_H
 #define ZINNIA_SYSTEM_H
 

include/zinnia/thread.h

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #ifndef ZINNIA_THREAD_H
 #define ZINNIA_THREAD_H
 

kernel/include/kernel/bits/usercopy.h

@@ -0,0 +1,7 @@
+#pragma once
+
+#include <kernel/usercopy.h>
+
+bool arch_usercopy_read(void* dst, const __user void* src, size_t len, struct usercopy_region** region);
+bool arch_usercopy_write(__user void* dst, const void* src, size_t len, struct usercopy_region** region);
+bool arch_usercopy_strlen(const __user char* str, size_t max, size_t* len, struct usercopy_region** region);

kernel/include/kernel/namespace.h

@@ -51,8 +51,8 @@ zn_status_t namespace_get(struct namespace* namespace, zn_handle_t handle, struc
 zn_status_t namespace_del_desc(struct namespace* namespace, zn_handle_t handle);
 
 // Clones a descriptor with optionally restricted rights.
-// If cloned_rights has ZN_RIGHTS_IDENTICAL set, the clone keeps the original rights.
-// Otherwise, cloned_rights must be a subset of the original descriptor's rights.
+// If `cloned_rights` contains ZN_RIGHTS_IDENTICAL, the clone keeps the original rights.
+// Otherwise, `cloned_rights` must be a subset of the original descriptor's rights.
 zn_status_t namespace_clone_desc(
     struct namespace* ns,
     struct namespace_desc* desc,

kernel/include/kernel/syscall_numbers.h

@@ -1,6 +1,8 @@
 #pragma once
 
-typedef enum {
+#include <stdint.h>
+
+typedef enum : uint32_t {
     ZN_SYSCALL_LOG,
     ZN_SYSCALL_ARCHCTL,
     ZN_SYSCALL_PAGE_SIZE,

kernel/include/kernel/usercopy.h

@@ -18,7 +18,3 @@ bool usercopy_write(__user void* dst, const void* src, size_t len);
 
 // Performs a strlen() on a user string.
 bool usercopy_strlen(const __user char* str, size_t max, size_t* len);
-
-bool arch_usercopy_read(void* dst, const __user void* src, size_t len, struct usercopy_region** region);
-bool arch_usercopy_write(__user void* dst, const void* src, size_t len, struct usercopy_region** region);
-bool arch_usercopy_strlen(const __user char* str, size_t max, size_t* len, struct usercopy_region** region);

kernel/mem/init.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <common/utils.h>
 #include <kernel/alloc.h>
 #include <kernel/init.h>

kernel/mem/mmio.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <kernel/mmio.h>
 #include <kernel/pmap.h>
 #include <kernel/vas.h>

kernel/mem/pmap.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/status.h>
 #include <kernel/alloc.h>
 #include <kernel/pmap.h>

kernel/mem/pmm.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <common/compiler.h>
 #include <kernel/alloc.h>
 #include <kernel/panic.h>

kernel/mem/slab.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/status.h>
 #include <common/compiler.h>
 #include <kernel/alloc.h>

kernel/mem/usercopy.c

@@ -1,3 +1,6 @@
+// SPDX-License-Identifier: MIT
+
+#include <kernel/bits/usercopy.h>
 #include <kernel/percpu.h>
 #include <kernel/usercopy.h>
 

kernel/mem/vas.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/status.h>
 #include <common/utils.h>
 #include <kernel/alloc.h>

kernel/mem/virt.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <common/utils.h>
 #include <kernel/alloc.h>
 #include <kernel/virt.h>

kernel/mem/vmo.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/status.h>
 #include <common/utils.h>
 #include <kernel/alloc.h>

kernel/meson.build

@@ -47,10 +47,10 @@ executable(
     link_args: kernel_link_args,
     link_depends: [
         kernel_lds,
-        vdso,
     ],
     sources: [
         kernel_sources,
         uacpi_sources,
+        vdso,
     ],
 )

kernel/syscalls/archctl.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/archctl.h>
 #include <kernel/syscalls.h>
 

kernel/syscalls/channel.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/channel.h>
 #include <zinnia/handle.h>
 #include <zinnia/status.h>

kernel/syscalls/dispatch.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/status.h>
 #include <common/compiler.h>
 #include <common/utils.h>

kernel/syscalls/futex.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/status.h>
 #include <kernel/futex.h>
 #include <kernel/syscalls.h>

kernel/syscalls/handle.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/handle.h>
 #include <zinnia/rights.h>
 #include <zinnia/status.h>

kernel/syscalls/random.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/status.h>
 #include <kernel/syscalls.h>
 

kernel/syscalls/system.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/status.h>
 #include <kernel/alloc.h>
 #include <kernel/clock.h>

kernel/syscalls/thread.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/handle.h>
 #include <zinnia/rights.h>
 #include <zinnia/status.h>
@@ -14,11 +16,11 @@
 #include <string.h>
 
 zn_status_t syscall_thread_create(struct arch_context* ctx) {
-    zn_handle_t ns_handle = ctx->ARCH_CTX_A0;
-    __user const char* name = (__user const char*)ctx->ARCH_CTX_A1;
-    size_t name_len = ctx->ARCH_CTX_A2;
-    enum zn_thread_flags flags = ctx->ARCH_CTX_A3;
-    __user zn_handle_t* out = (__user zn_handle_t*)ctx->ARCH_CTX_A4;
+    zn_handle_t ns_handle = ctx->a0;
+    __user const char* name = (__user const char*)ctx->a1;
+    size_t name_len = ctx->a2;
+    enum zn_thread_flags flags = ctx->a3;
+    __user zn_handle_t* out = (__user zn_handle_t*)ctx->a4;
 
     struct task* current = percpu_get()->sched.current;
     // Resolve namespace.
@@ -44,7 +46,6 @@ zn_status_t syscall_thread_create(struct arch_context* ctx) {
         return ZN_ERR_BAD_BUFFER;
 
     // Create the task sharing the caller's address space.
-    // Uses sched_to_user as a placeholder entry — the real IP/SP come from thread_start.
     struct task* new_task;
     zn_status_t status = task_create(task_name, current->space, ns, sched_to_user, 0, &new_task);
     if (status != ZN_OK)
@@ -71,10 +72,10 @@ zn_status_t syscall_thread_create(struct arch_context* ctx) {
 }
 
 zn_status_t syscall_thread_start(struct arch_context* ctx) {
-    zn_handle_t thread_handle = ctx->ARCH_CTX_A0;
-    uintptr_t ip = ctx->ARCH_CTX_A1;
-    uintptr_t sp = ctx->ARCH_CTX_A2;
-    uintptr_t arg = ctx->ARCH_CTX_A3;
+    zn_handle_t thread_handle = ctx->a0;
+    uintptr_t ip = ctx->a1;
+    uintptr_t sp = ctx->a2;
+    uintptr_t arg = ctx->a3;
 
     struct task* current = percpu_get()->sched.current;
     struct sched_percpu* sched = &percpu_get()->sched;

kernel/syscalls/vas.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/status.h>
 #include <kernel/syscalls.h>
 

kernel/syscalls/vmo.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/handle.h>
 #include <zinnia/status.h>
 #include <common/utils.h>

kernel/vdso/archctl.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/archctl.h>
 #include <kernel/vdso.h>
 

kernel/vdso/channel.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/channel.h>
 #include <kernel/vdso.h>
 

kernel/vdso/data.c

@@ -1,7 +1,7 @@
+// SPDX-License-Identifier: MIT
+
 #include <common/compiler.h>
 #include <kernel/vdso.h>
 
 [[__used, __section(".vdso_data")]]
 const volatile struct vdso_kernel_data vdso_data = {0};
-
-static_assert(sizeof(vdso_data) <= 0x1000);

kernel/vdso/futex.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/futex.h>
 #include <kernel/vdso.h>
 

kernel/vdso/handle.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/handle.h>
 #include <kernel/vdso.h>
 

kernel/vdso/mem.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/mem.h>
 #include <kernel/vdso.h>
 

kernel/vdso/meson.build

@@ -19,7 +19,7 @@ vdso_link_args = [
 
 # Build a shared library, which we are going to embed next.
 # TODO: We need to ensure there are no relocations inside the vDSO.
-vdso = shared_library(
+real_vdso = shared_library(
     'zinnia-vdso',
     name_prefix: '',
     c_args: vdso_c_args,
@@ -44,5 +44,11 @@ vdso = shared_library(
     ],
 )
 
+vdso = custom_target(
+    command: [find_program('cp'), '@INPUT@', '@OUTPUT@'],
+    input: real_vdso,
+    output: 'vdso.bin',
+)
+
 # Tell the kernel where the built binary lives so we can #embed it.
 kernel_c_args += ['-DVDSO_PATH="' + vdso.full_path() + '"']

kernel/vdso/namespace.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/namespace.h>
 #include <kernel/vdso.h>
 

kernel/vdso/random.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/random.h>
 #include <kernel/vdso.h>
 

kernel/vdso/status.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/status.h>
 #include <kernel/vdso.h>
 

kernel/vdso/system.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/system.h>
 #include <kernel/vdso.h>
 

kernel/vdso/thread.c

@@ -1,3 +1,5 @@
+// SPDX-License-Identifier: MIT
+
 #include <zinnia/thread.h>
 #include <kernel/vdso.h>
 

kernel/vdso/vdso.ld

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
+/* SPDX-License-Identifier: MIT */
 
 VERSION {
     ZINNIA_0 {
@@ -11,7 +11,7 @@ VERSION {
 PHDRS {
     text    PT_LOAD    FILEHDR PHDRS FLAGS(5);
     dynamic PT_DYNAMIC FLAGS(4);
-    note    PT_NOTE    FLAGS(4);
+    data    PT_LOAD    FLAGS(4);
 }
 
 SECTIONS
@@ -28,10 +28,6 @@ SECTIONS
         *(.got .got.*)
     } :text
 
-    .data ALIGN(CONSTANT(MAXPAGESIZE)) : {
-        *(.vdso_data)
-    } :text
-
     .dynsym : {
         *(.dynsym)
     } :text
@@ -44,9 +40,15 @@ SECTIONS
         *(.dynamic)
     } :text :dynamic
 
+    .vdso_data ALIGN(CONSTANT(MAXPAGESIZE)) : {
+        *(.vdso_data)
+        . = ALIGN(CONSTANT(MAXPAGESIZE));
+    } :data
+
+
     /DISCARD/ :
     {
-        *(.data*)
+        *(.data*) /* No data allowed besides the vDSO data */
         *(.bss*)
         *(.comment*)
         *(.eh_frame*)

lib/device/meson.build

@@ -0,0 +1,7 @@
+libdevice = library(
+    'device',
+    sources: [
+        'vdso.c',
+    ],
+    include_directories: common_includes,
+)

lib/freestanding/entry.c

@@ -0,0 +1 @@
+

lib/freestanding/meson.build

@@ -0,0 +1,8 @@
+libfreestanding = static_library(
+    'freestanding',
+    sources: [
+        'entry.c',
+        'vdso.c',
+    ],
+    include_directories: common_includes,
+)

lib/meson.build

@@ -1,7 +1,3 @@
-libzinnia = static_library(
-    'zinnia',
-    sources: [
-        'vdso.c',
-    ],
-    include_directories: common_includes,
-)
+subdir('freestanding')
+
+subdir('device')

servers/devd/meson.build

@@ -11,6 +11,6 @@ executable(
         common_includes,
         uacpi_includes,
     ],
-    link_with: libzinnia,
+    link_with: libfreestanding,
     install: true,
 )

servers/initd/meson.build

@@ -3,7 +3,7 @@ executable(
     'main.c',
     # The init process is linked statically because the dynamic loader can't be read before posixd is up.
     link_args: '-static',
-    link_with: libzinnia,
+    link_with: libfreestanding,
     include_directories: common_includes,
     install: true,
 )