.B F_GETSIG
and
.B F_SETSIG
-are Linux specific.
+are Linux-specific.
POSIX has asynchronous I/O and the
.I aio_sigevent
structure to achieve similar things; these are also available
.BR F_GETLEASE ,
and
.B F_SETLEASE
-are Linux specific.
+are Linux-specific.
(Define the
.B _GNU_SOURCE
macro to obtain these definitions.)