F_LINUX_SPECIFIC_BASE 6 include/linux/fcntl.h #define F_SETLEASE (F_LINUX_SPECIFIC_BASE + 0) F_LINUX_SPECIFIC_BASE 7 include/linux/fcntl.h #define F_GETLEASE (F_LINUX_SPECIFIC_BASE + 1) F_LINUX_SPECIFIC_BASE 13 include/linux/fcntl.h #define F_CANCELLK (F_LINUX_SPECIFIC_BASE + 5) F_LINUX_SPECIFIC_BASE 16 include/linux/fcntl.h #define F_DUPFD_CLOEXEC (F_LINUX_SPECIFIC_BASE + 6) F_LINUX_SPECIFIC_BASE 22 include/linux/fcntl.h #define F_NOTIFY (F_LINUX_SPECIFIC_BASE+2)