F_DUPFD_CLOEXEC 17 include/uapi/linux/fcntl.h #define F_DUPFD_CLOEXEC (F_LINUX_SPECIFIC_BASE + 6) F_DUPFD_CLOEXEC 17 tools/include/uapi/linux/fcntl.h #define F_DUPFD_CLOEXEC (F_LINUX_SPECIFIC_BASE + 6)