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-rw-r--r--posix/unistd.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/posix/unistd.h b/posix/unistd.h
index f0254b4..4468541 100644
--- a/posix/unistd.h
+++ b/posix/unistd.h
@@ -125,6 +125,14 @@ extern int euidaccess __P ((__const char *__name, int __type));
#define SEEK_END 2 /* Seek from end of file. */
#endif
+#if defined (__USE_BSD) && !defined (L_SET)
+/* Old BSD names for the same constants; just for compatibility. */
+#define L_SET SEEK_SET
+#define L_INCR SEEK_CUR
+#define L_XTND SEEK_END
+#endif
+
+
/* Move FD's file position to OFFSET bytes from the
beginning of the file (if WHENCE is SEEK_SET),
the current position (if WHENCE is SEEK_CUR),
@@ -417,6 +425,12 @@ extern char *ttyname __P ((int __fd));
extern int __isatty __P ((int __fd));
extern int isatty __P ((int __fd));
+#ifdef __USE_BSD
+/* Return the index into the active-logins file (utmp) for
+ the terminal FD is open on. */
+extern int ttyslot ((int __fd));
+#endif
+
/* Make a link to FROM named TO. */
extern int __link __P ((__const char *__from, __const char *__to));