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#pragma once
#include <kernel/types.h>
#include <stddef.h>
#define HANDLE_MAX 16
typedef int handle_t; // TODO duplicated in syscalls.h
enum handle_type {
HANDLE_EMPTY,
HANDLE_SPECIAL_TTY,
};
struct handle {
enum handle_type type;
};
enum handleop { // describes the operations which can be done on handles
HANDLEOP_MOUNT, // also closes the original handle
HANDLEOP_OPEN,
HANDLEOP_READ,
HANDLEOP_WRITE,
HANDLEOP_CLOSE,
};
struct handleop_args {
enum handleop type;
struct handle *handle;
union {
struct { // HANDLEOP_MOUNT
struct mount *target;
} mnt;
struct { // HANDLEOP_OPEN
struct handle *target;
const char *path; // relative to the mount point
size_t len;
} open;
struct { // HANDLEOP_READ, HANDLEOP_WRITE
user_ptr ptr;
size_t len;
} rw;
};
};
int handleop_dispatch(struct handleop_args args);
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