| /* Convert between lowlevel sigmask and libc representation of sigset_t. |
| Generic version. |
| Copyright (C) 1998-2018 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* Convert between an old-style 32-bit signal mask and a POSIX sigset_t. */ |
| |
| #include <sigsetops.h> |
| |
| /* 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 |
| { |
| 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; |
| unsigned int sig; |
| |
| for (sig = 1; sig < NSIG && sig <= sizeof (mask) * 8; sig++) |
| if (__sigismember (set, sig)) |
| mask |= sigmask (sig); |
| |
| return mask; |
| } |
| } |