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.

ObsoleteFiles.inc

@@ -14,6 +14,8 @@
 # The file is partitioned: OLD_FILES first, then OLD_LIBS and OLD_DIRS last.
 #
 
+# 20100114: removal of ttyslot(3)
+OLD_FILES+=usr/share/man/man3/ttyslot.3.gz
 # 20100113: remove utmp.h, replace it by utmpx.h
 OLD_FILES+=usr/share/man/man3/login.3.gz
 OLD_FILES+=usr/share/man/man3/logout.3.gz

include/unistd.h

@@ -574,7 +574,6 @@ int	 swapon(const char *);
 int	 swapoff(const char *);
 int	 syscall(int, ...);
 off_t	 __syscall(quad_t, ...);
-int	 ttyslot(void);
 int	 undelete(const char *);
 int	 unwhiteout(const char *);
 void	*valloc(size_t);			/* obsoleted by malloc() */

lib/libc/gen/Symbol.map

@@ -272,7 +272,6 @@ FBSD_1.0 {
 	openlog;
 	closelog;
 	setlogmask;
-	ttyslot;
 	ttyname_r;
 	ttyname;
 	timezone;

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 .

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);

libexec/getty/ttys.5

@@ -158,7 +158,6 @@ ttyp1	none	network	off	group=pty
 .Sh SEE ALSO
 .Xr login 1 ,
 .Xr getttyent 3 ,
-.Xr ttyslot 3 ,
 .Xr gettytab 5 ,
 .Xr login.conf 5 ,
 .Xr termcap 5 ,