/* Convert between lowlevel sigmask and libc representation of sigset_t. Generic version. Copyright (C) 1998, 2002 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Joe Keane <jgk@jgk.org>. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ /* Convert between an old-style 32-bit signal mask and a POSIX sigset_t. */ /* Perform *SET = MASK. Unused bits of *SET are set to 0. Returns zero for success or -1 for errors (from sigaddset/sigemptyset). */ static inline int __attribute__ ((unused)) sigset_set_old_mask (sigset_t *set, int mask) { if (sizeof (__sigset_t) == sizeof (unsigned int)) *set = (unsigned int) mask; else { register unsigned int __sig; if (__sigemptyset (set) < 0) return -1; for (__sig = 1; __sig < NSIG && __sig <= sizeof (mask) * 8; __sig++) if (mask & sigmask (__sig)) if (__sigaddset (set, __sig) < 0) return -1; } return 0; } /* Return the sigmask corresponding to *SET. Unused bits of *SET are thrown away. */ static inline int __attribute__ ((unused)) sigset_get_old_mask (const sigset_t *set) { if (sizeof (sigset_t) == sizeof (unsigned int)) return (unsigned int) *set; else { unsigned int mask = 0; register unsigned int sig; for (sig = 1; sig < NSIG && sig <= sizeof (mask) * 8; sig++) if (__sigismember (set, sig)) mask |= sigmask (sig); return mask; } }