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#pragma once
#include <fcntl.h>
#include <sys/cdefs.h>
#include <sys/types.h>
__BEGIN_DECLS
#define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR)
#define S_ISCHR(m) (((m)&S_IFMT) == S_IFCHR)
#define S_ISBLK(m) (((m)&S_IFMT) == S_IFBLK)
#define S_ISREG(m) (((m)&S_IFMT) == S_IFREG)
#define S_ISFIFO(m) (((m)&S_IFMT) == S_IFIFO)
#define S_ISLNK(m) (((m)&S_IFMT) == S_IFLNK)
#define S_ISSOCK(m) (((m)&S_IFMT) == S_IFSOCK)
mode_t umask(mode_t);
int chmod(const char* pathname, mode_t);
int fchmod(int fd, mode_t);
int mkdir(const char* pathname, mode_t);
inline dev_t makedev(unsigned int major, unsigned int minor) { return (minor & 0xffu) | (major << 8u) | ((minor & ~0xffu) << 12u); }
inline unsigned int major(dev_t dev) { return (dev & 0xfff00u) >> 8u; }
inline unsigned int minor(dev_t dev) { return (dev & 0xffu) | ((dev >> 12u) & 0xfff00u); }
__END_DECLS
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