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#ifndef _FILE_H
#define _FILE_H
#include <sys/stat.h>
#include <machine/syscall.h>
#include "atomic.h"
typedef struct file
{
int kfd; // file descriptor on the appserver side
atomic_t refcnt;
} file_t;
extern file_t *stdin, *stdout, *stderr;
file_t* file_get(int fd);
sysret_t file_open(const char* fn, size_t len, int flags, int mode);
int file_dup(file_t*);
sysret_t file_write(file_t* f, const char* buf, size_t n);
sysret_t file_read(file_t* f, char* buf, size_t n);
sysret_t file_stat(file_t* f, struct stat* s);
sysret_t file_lseek(file_t* f, size_t ptr, int dir);
int fd_close(int fd);
void file_init();
#endif
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