libmango: add flags parameter to task_create

libmango/arch/x86_64/syscall.S

@@ -57,7 +57,7 @@
 
 SYSCALL_GATE task_exit SYS_TASK_EXIT 1
 SYSCALL_GATE task_self SYS_TASK_SELF 1
-SYSCALL_GATE task_create SYS_TASK_CREATE 5
+SYSCALL_GATE task_create SYS_TASK_CREATE 6
 SYSCALL_GATE task_duplicate SYS_TASK_DUPLICATE 2
 SYSCALL_GATE task_create_thread SYS_TASK_CREATE_THREAD 6
 SYSCALL_GATE task_get_address_space SYS_TASK_GET_ADDRESS_SPACE 1

libmango/include-user/mango/task.h

@@ -9,6 +9,7 @@ extern kern_status_t task_self(kern_handle_t *out);
 
 extern kern_status_t task_create(
 	kern_handle_t parent,
+	task_flags_t flags,
 	const char *name,
 	size_t name_len,
 	kern_handle_t *out_task,

libmango/include/mango/types.h

@@ -16,6 +16,10 @@
 #define MAP_ADDRESS_INVALID          ((virt_addr_t)0)
 #define KERN_HANDLE_INVALID          ((kern_handle_t)0xFFFFFFFF)
 
+/* task creation flags */
+#define TASK_F_DEFAULT               0x0000u
+#define TASK_F_CLONE_ALL_HANDLES     0x0001u
+
 /* config keys for use with kern_config_get/kern_config_set */
 #define KERN_CFG_INVALID             0x00000u
 #define KERN_CFG_PAGE_SIZE           0x00001u
@@ -118,6 +122,7 @@ typedef uint32_t kern_handle_t;
 typedef uint32_t kern_config_key_t;
 typedef uint32_t vm_prot_t;
 typedef uint32_t vm_flags_t;
+typedef uint32_t task_flags_t;
 typedef int64_t ssize_t;
 typedef uint32_t kern_futex_t;
 typedef uint32_t kern_msg_type_t;