diff options
Diffstat (limited to 'sysdeps/posix/ctermid.c')
-rw-r--r-- | sysdeps/posix/ctermid.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/sysdeps/posix/ctermid.c b/sysdeps/posix/ctermid.c new file mode 100644 index 0000000..8e96694 --- /dev/null +++ b/sysdeps/posix/ctermid.c @@ -0,0 +1,39 @@ +/* Copyright (C) 1991 Free Software Foundation, Inc. +This file is part of the GNU C Library. + +The GNU C Library is free software; you can redistribute it and/or +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include <ansidecl.h> +#include <stdio.h> +#include <string.h> + + +/* Return the name of the controlling terminal. + If S is not NULL, the name is copied into it (it should be at + least L_ctermid bytes long), otherwise a static buffer is used. */ +char * +DEFUN(ctermid, (s), char *s) +{ + static char name[L_ctermid]; + + if (name[0] == '\0') + (void) strcpy(name, "/dev/tty"); + + if (s == NULL) + return(name); + + return(strcpy(s, name)); +} |