diff options
Diffstat (limited to 'sysdeps/posix/signal.c')
| -rw-r--r-- | sysdeps/posix/signal.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/sysdeps/posix/signal.c b/sysdeps/posix/signal.c index 9a8d2de0e4..ce93116075 100644 --- a/sysdeps/posix/signal.c +++ b/sysdeps/posix/signal.c @@ -1,20 +1,20 @@ /* Copyright (C) 1991, 1992, 1996 Free Software Foundation, Inc. -This file is part of the GNU C Library. + 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 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. + 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. */ + 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., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ #include <errno.h> #include <signal.h> @@ -31,7 +31,8 @@ signal (sig, handler) { struct sigaction act, oact; - if (handler == SIG_ERR) + /* Check signal extents to protect __sigismember. */ + if (handler == SIG_ERR || sig < 1 || sig >= NSIG) { __set_errno (EINVAL); return SIG_ERR; |