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#pragma once
#include <stddef.h>
#ifndef TYPES_INCLUDED
# error "please include <kernel/types.h> or <init/types.h> before this file"
#endif
typedef int handle_t;
enum {
// idc about stable syscall numbers just yet
_SYSCALL_EXIT,
_SYSCALL_AWAIT,
_SYSCALL_FORK,
_SYSCALL_OPEN,
_SYSCALL_MOUNT,
_SYSCALL_READ,
_SYSCALL_WRITE,
_SYSCALL_CLOSE,
};
/** Kills the current process.
* TODO: what happens to the children?
*/
_Noreturn void _syscall_exit(const user_ptr msg, size_t len);
/** Waits for a child to exit, putting its exit message into *buf.
* @return the length of the message
*/
int _syscall_await(user_ptr buf, int len);
/** Creates a copy of the current process, and executes it.
* All user memory pages get copied too.
* @return 0 in the child, a meaningless positive value in the parent.
*/
int _syscall_fork(void);
handle_t _syscall_open(const user_ptr path, int len);
int _syscall_mount(handle_t, const user_ptr path, int len);
int _syscall_read(handle_t, user_ptr buf, int len);
int _syscall_write(handle_t, user_ptr buf, int len);
int _syscall_close(handle_t);
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