Phase out ttyslot(3).

The ttyslot() function was originally part for SUSv1, marked LEGACY in
SUSv2 and removed later on. This function only makes sense when using
utmp(5), because it was used to determine the offset of the record for
the controlling TTY. It makes little sense to keep it here, because the
new utmpx file format doesn't index based on TTY slots.

3 files changed, 6 insertions, 22 deletions

diff --git a/lib/libc/gen/Symbol.map b/lib/libc/gen/Symbol.map
index 534c81a..42404bc 100644
--- a/lib/libc/gen/Symbol.map
+++ b/lib/libc/gen/Symbol.map
@@ -272,7 +272,6 @@ FBSD_1.0 {
 	openlog;
 	closelog;
 	setlogmask;
-	ttyslot;
 	ttyname_r;
 	ttyname;
 	timezone;
diff --git a/lib/libc/gen/ttyname.3 b/lib/libc/gen/ttyname.3
index c7b8cbc..e583833 100644
--- a/lib/libc/gen/ttyname.3
+++ b/lib/libc/gen/ttyname.3
@@ -34,8 +34,7 @@
 .Sh NAME
 .Nm ttyname ,
 .Nm ttyname_r ,
-.Nm isatty ,
-.Nm ttyslot
+.Nm isatty
 .Nd get name of associated terminal (tty) from file descriptor
 .Sh LIBRARY
 .Lb libc
@@ -47,8 +46,6 @@
 .Fn ttyname_r "int fd" "char *buf" "size_t len"
 .Ft int
 .Fn isatty "int fd"
-.Ft int
-.Fn ttyslot void
 .Sh DESCRIPTION
 These functions operate on the system file descriptors for terminal
 type devices.
@@ -89,13 +86,6 @@ The
 .Fn ttyname_r
 function
 takes a buffer and length as arguments to avoid this problem.
-.Pp
-The
-.Fn ttyslot
-function
-fetches the current process' control terminal number from the
-.Xr ttys 5
-file entry.
 .Sh RETURN VALUES
 The
 .Fn ttyname
@@ -110,12 +100,6 @@ The
 .Fn ttyname_r
 function returns 0 if successful.
 Otherwise an error number is returned.
-.Pp
-The
-.Fn ttyslot
-function
-returns the unit number of the device file if found; otherwise
-the value zero is returned.
 .Sh FILES
 .Bl -tag -width ".Pa /etc/ttys" -compact
 .It Pa /dev/\(**
@@ -142,10 +126,9 @@ is smaller than the length of the string to be returned.
 .Xr ttys 5
 .Sh HISTORY
 The
-.Fn isatty ,
-.Fn ttyname ,
+.Fn isatty
 and
-.Fn ttyslot
+.Fn ttyname
 functions
 appeared in
 .At v7 .
diff --git a/lib/libc/gen/ttyslot.c b/lib/libc/gen/ttyslot.c
index 31cc156..b2fac7c 100644
--- a/lib/libc/gen/ttyslot.c
+++ b/lib/libc/gen/ttyslot.c
@@ -40,7 +40,7 @@ __FBSDID("$FreeBSD$");
 #include <unistd.h>
 
 int
-ttyslot()
+__ttyslot(void)
 {
 	struct ttyent *ttyp;
 	int slot;
@@ -63,3 +63,5 @@ ttyslot()
 	endttyent();
 	return(0);
 }
+
+__sym_compat(ttyslot, __ttyslot, FBSD_1.0);