doc: Mention signalfd.

* doc/glibc-functions/signalfd.texi: New file.
* doc/gnulib.texi (Glibc sys/signalfd.h): New section.

2 files changed, 28 insertions, 0 deletions

diff --git a/doc/glibc-functions/signalfd.texi b/doc/glibc-functions/signalfd.texi
new file mode 100644
index 0000000000..099cb8fa01
--- /dev/null
+++ b/doc/glibc-functions/signalfd.texi
@@ -0,0 +1,18 @@
+@node signalfd
+@subsection @code{signalfd}
+@findex signalfd
+
+Documentation:@* @uref{https://www.kernel.org/doc/man-pages/online/pages/man2/signalfd.2.html,,man signalfd}
+
+Gnulib module: ---
+
+Portability problems fixed by Gnulib:
+@itemize
+@end itemize
+
+Portability problems not fixed by Gnulib:
+@itemize
+@item
+This function is missing on many non-glibc platforms:
+glibc 2.6, Mac OS X 10.5, FreeBSD 12.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 7.1, HP-UX 11.31, IRIX 6.5, OSF/1 5.1, Solaris 11.4, Cygwin, mingw, MSVC 14, Interix 3.5, BeOS.
+@end itemize
diff --git a/doc/gnulib.texi b/doc/gnulib.texi
index 06dc403b55..dcb6224212 100644
--- a/doc/gnulib.texi
+++ b/doc/gnulib.texi
@@ -3635,6 +3635,7 @@ This list of functions is sorted according to the header that declares them.
 * Glibc sys/resource.h::
 * Glibc sys/sem.h::
 * Glibc sys/sendfile.h::
+* Glibc sys/signalfd.h::
 * Glibc sys/socket.h::
 * Glibc sys/stat.h::
 * Glibc sys/statfs.h::
@@ -5824,6 +5825,15 @@ This list of functions is sorted according to the header that declares them.
 @c @node Glibc sys/shm.h
 @c @section Glibc Extensions to @code{<sys/shm.h>}
 
+@node Glibc sys/signalfd.h
+@section Glibc @code{<sys/signalfd.h>}
+
+@menu
+* signalfd::
+@end menu
+
+@include glibc-functions/signalfd.texi
+
 @node Glibc sys/socket.h
 @section Glibc Extensions to @code{<sys/socket.h>}