RockOS/rocklibc/include/syscall.h

#ifndef RLIBC_SYSCALL_H
#define RLIBC_SYSCALL_H

#include <stdint.h>
#include <stddef.h>

#define SYS_EXIT    1
#define SYS_READ    3
#define SYS_WRITE   4
#define SYS_PTY     20
#define SYS_FORK    21

int write(int fd, const void *buf, size_t count);
int read(int fd, void *buf, size_t count);
int close(int fd);

size_t lseek(int fd, size_t offset, int whence);

void exit(int status) __attribute__((noreturn));

void *sbrk(intptr_t increment);
int brk(void *addr);

int pty(int* slave);
int fork();

#endif