《操作系统》的实验代码。
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#ifndef __USER_LIBS_DIR_H__
#define __USER_LIBS_DIR_H__
#include <defs.h>
#include <dirent.h>
typedef struct {
int fd;
struct dirent dirent;
} DIR;
DIR *opendir(const char *path);
struct dirent *readdir(DIR *dirp);
void closedir(DIR *dirp);
int chdir(const char *path);
int getcwd(char *buffer, size_t len);
#endif /* !__USER_LIBS_DIR_H__ */