#ifndef SYS_LINUX_UNISTD_H_
#define SYS_LINUX_UNISTD_H_

#include <stddef.h>
#include <stdint.h>
#include <sys/types.h>

struct stat;
struct pollfd;

typedef __intptr_t ssize_t;

extern ssize_t read(int fd, void *buf, size_t count);
extern ssize_t write(int fd, const void *buf, size_t count);
extern int open(const char *pathname, int flags);
extern int close(int fd);
extern int stat(const char *pathname, struct stat *statbuf);
extern int fstat(int fd, struct stat *statbuf);
extern int lstat(const char *pathname, struct stat *statbuf);
extern off_t lseek(int fd, off_t offset, int whence);
extern void *mmap(void *addr, size_t length, int prot, int flags,
        int fd, off_t offset);
extern int mprotect(void *addr, size_t len, int prot);
extern int munmap(void *addr, size_t length);
extern int brk(void *addr);
extern void *sbrk(intptr_t increment);
extern int ioctl(int fd, unsigned long request, void *arg);
extern void _exit(int code);

#endif