1 files changed, 28 insertions, 7 deletions
diff --git a/lib/libc/net/getnetent.3 b/lib/libc/net/getnetent.3
index adf2760d132f..bd588bd7551a 100644
--- a/lib/libc/net/getnetent.3
+++ b/lib/libc/net/getnetent.3
@@ -25,10 +25,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.\"     @(#)getnetent.3	8.1 (Berkeley) 6/4/93
-.\" $FreeBSD$
-.\"
-.Dd June 4, 1993
+.Dd June 27, 2022
 .Dt GETNETENT 3
 .Os
 .Sh NAME
@@ -52,6 +49,12 @@
 .Fn setnetent "int stayopen"
 .Ft void
 .Fn endnetent void
+.Ft int
+.Fn getnetent_r "struct netent *ne" "char *buffer" "size_t buflen" "struct netent **result" "int *h_errnop"
+.Ft int
+.Fn getnetbyaddr_r "uint32_t net" "int type" "struct netent *ne" "char *buffer" "size_t buflen" "struct netent **result" int *h_errorp"
+.Ft int
+.Fn getnetbyname_r "const char *name" "struct netent *ne" "char *buffer" "size_t buflen" "struct netent **result" "int *h_errorp"
 .Sh DESCRIPTION
 The
 .Fn getnetent ,
@@ -62,9 +65,7 @@ functions
 each return a pointer to an object with the
 following structure describing an internet network.
 This structure contains either the information obtained
-from the nameserver,
-.Xr named 8 ,
-broken-out fields of a line in the network data base
+from the nameserver, broken-out fields of a line in the network data base
 .Pa /etc/networks ,
 or entries supplied by the
 .Xr yp 8
@@ -135,6 +136,26 @@ argument
 must be
 .Dv AF_INET .
 Network numbers are supplied in host order.
+.Pp
+Functions with the
+.Em _r
+suffix provide reentrant versions of their respective counterparts.
+The caller must supply five additional parameters: a
+.Vt struct netent
+variable to be filled on success, a
+.Va buffer
+of
+.Va buflen
+bytes in size, a
+.Vt struct netent
+.Va result
+variable that will point to the result on success or be set to
+.Dv NULL
+on failure or if the name is not found.
+The
+.Va h_errnop
+variable will be filled with the error code if any.
+All these functions return 0 on success.
 .Sh FILES
 .Bl -tag -width /etc/nsswitch.conf -compact
 .It Pa /etc/networks