fixes

kernel/include/assert.h

@@ -5,7 +5,7 @@
 
 // Like the standard C assert, but also active in debug builds.
 #define assert(expr, msg, ...) \
-    ({ \
+    do { \
         if (__unlikely(!(expr))) { \
             panic( \
                 "In function \"%s\" (%s:%u):\n" \
@@ -17,7 +17,7 @@
                 ##__VA_ARGS__ \
             ); \
         } \
-    })
+    } while (0)
 
 #ifndef NDEBUG
 #define debug_assert(...) assert(__VA_ARGS__)

kernel/include/kernel/channel.h

@@ -1,5 +1,8 @@
+// SPDX-License-Identifier: MIT
+
 #pragma once
 
+#include <zinnia/channel.h>
 #include <zinnia/status.h>
 #include <kernel/spin.h>
 #include <kernel/tailq.h>
@@ -19,6 +22,7 @@ struct channel_msg {
 struct channel {
     struct channel* peer;
     struct spinlock lock;
+    enum zn_channel_flags flags;
     tailq_head(struct channel_msg) messages;
     struct wait_queue waiters;
 };

kernel/include/kernel/syscalls.h

@@ -6,32 +6,34 @@ typedef zn_status_t (*syscall_fn_t)(struct arch_context* ctx);
 
 void syscall_dispatch(struct arch_context* ctx);
 
-zn_status_t syscall_log(struct arch_context* ctx);
-zn_status_t syscall_archctl(struct arch_context* ctx);
-zn_status_t syscall_page_size(struct arch_context* ctx);
-zn_status_t syscall_time(struct arch_context* ctx);
+#define DEFINE_SYSCALL(name) zn_status_t syscall_##name(struct arch_context* ctx)
 
-zn_status_t syscall_handle_validate(struct arch_context* ctx);
-zn_status_t syscall_handle_drop(struct arch_context* ctx);
-zn_status_t syscall_handle_clone(struct arch_context* ctx);
+DEFINE_SYSCALL(log);
+DEFINE_SYSCALL(archctl);
+DEFINE_SYSCALL(page_size);
+DEFINE_SYSCALL(time);
 
-zn_status_t syscall_vas_create(struct arch_context* ctx);
+DEFINE_SYSCALL(handle_validate);
+DEFINE_SYSCALL(handle_drop);
+DEFINE_SYSCALL(handle_clone);
 
-zn_status_t syscall_vmo_create(struct arch_context* ctx);
-zn_status_t syscall_vmo_create_phys(struct arch_context* ctx);
-zn_status_t syscall_vmo_map(struct arch_context* ctx);
+DEFINE_SYSCALL(vas_create);
 
-zn_status_t syscall_channel_create(struct arch_context* ctx);
-zn_status_t syscall_channel_wait(struct arch_context* ctx);
-zn_status_t syscall_channel_read(struct arch_context* ctx);
-zn_status_t syscall_channel_write(struct arch_context* ctx);
+DEFINE_SYSCALL(vmo_create);
+DEFINE_SYSCALL(vmo_create_phys);
+DEFINE_SYSCALL(vmo_map);
 
-zn_status_t syscall_thread_create(struct arch_context* ctx);
-zn_status_t syscall_thread_start(struct arch_context* ctx);
-zn_status_t syscall_thread_exit(struct arch_context* ctx);
+DEFINE_SYSCALL(channel_create);
+DEFINE_SYSCALL(channel_wait);
+DEFINE_SYSCALL(channel_read);
+DEFINE_SYSCALL(channel_write);
 
-zn_status_t syscall_random_get(struct arch_context* ctx);
-zn_status_t syscall_random_entropy(struct arch_context* ctx);
+DEFINE_SYSCALL(thread_create);
+DEFINE_SYSCALL(thread_start);
+DEFINE_SYSCALL(thread_exit);
 
-zn_status_t syscall_futex_wait(struct arch_context* ctx);
-zn_status_t syscall_futex_wake(struct arch_context* ctx);
+DEFINE_SYSCALL(random_get);
+DEFINE_SYSCALL(random_entropy);
+
+DEFINE_SYSCALL(futex_wait);
+DEFINE_SYSCALL(futex_wake);