| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
| * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #ifndef _ANDROID_LEGACY_SIGNAL_INLINES_H_ |
| #define _ANDROID_LEGACY_SIGNAL_INLINES_H_ |
| |
| #include <sys/cdefs.h> |
| |
| #if __ANDROID_API__ < __ANDROID_API_L__ |
| |
| #include <errno.h> |
| #include <signal.h> |
| #include <string.h> |
| |
| __BEGIN_DECLS |
| |
| sighandler_t bsd_signal(int __signal, sighandler_t __handler) __REMOVED_IN(21); |
| |
| /* These weren't introduced until L. */ |
| int __libc_current_sigrtmax() __attribute__((__weak__)) __VERSIONER_NO_GUARD; |
| int __libc_current_sigrtmin() __attribute__((__weak__)) __VERSIONER_NO_GUARD; |
| |
| static __inline int __ndk_legacy___libc_current_sigrtmax() { |
| if (__libc_current_sigrtmax) return __libc_current_sigrtmax(); |
| return __SIGRTMAX; /* Should match __libc_current_sigrtmax. */ |
| } |
| |
| static __inline int __ndk_legacy___libc_current_sigrtmin() { |
| if (__libc_current_sigrtmin) return __libc_current_sigrtmin(); |
| return __SIGRTMIN + 7; /* Should match __libc_current_sigrtmin. */ |
| } |
| |
| #undef SIGRTMAX |
| #define SIGRTMAX __ndk_legacy___libc_current_sigrtmax() |
| #undef SIGRTMIN |
| #define SIGRTMIN __ndk_legacy___libc_current_sigrtmin() |
| |
| static __inline int sigismember(const sigset_t *set, int signum) { |
| /* Signal numbers start at 1, but bit positions start at 0. */ |
| int bit = signum - 1; |
| const unsigned long *local_set = (const unsigned long *)set; |
| if (set == NULL || bit < 0 || bit >= (int)(8 * sizeof(sigset_t))) { |
| errno = EINVAL; |
| return -1; |
| } |
| return (int)((local_set[bit / LONG_BIT] >> (bit % LONG_BIT)) & 1); |
| } |
| |
| static __inline int sigaddset(sigset_t *set, int signum) { |
| /* Signal numbers start at 1, but bit positions start at 0. */ |
| int bit = signum - 1; |
| unsigned long *local_set = (unsigned long *)set; |
| if (set == NULL || bit < 0 || bit >= (int)(8 * sizeof(sigset_t))) { |
| errno = EINVAL; |
| return -1; |
| } |
| local_set[bit / LONG_BIT] |= 1UL << (bit % LONG_BIT); |
| return 0; |
| } |
| |
| static __inline int sigdelset(sigset_t *set, int signum) { |
| /* Signal numbers start at 1, but bit positions start at 0. */ |
| int bit = signum - 1; |
| unsigned long *local_set = (unsigned long *)set; |
| if (set == NULL || bit < 0 || bit >= (int)(8 * sizeof(sigset_t))) { |
| errno = EINVAL; |
| return -1; |
| } |
| local_set[bit / LONG_BIT] &= ~(1UL << (bit % LONG_BIT)); |
| return 0; |
| } |
| |
| static __inline int sigemptyset(sigset_t *set) { |
| if (set == NULL) { |
| errno = EINVAL; |
| return -1; |
| } |
| memset(set, 0, sizeof(sigset_t)); |
| return 0; |
| } |
| |
| static __inline int sigfillset(sigset_t *set) { |
| if (set == NULL) { |
| errno = EINVAL; |
| return -1; |
| } |
| memset(set, ~0, sizeof(sigset_t)); |
| return 0; |
| } |
| |
| static __inline sighandler_t signal(int s, sighandler_t f) { |
| return bsd_signal(s, f); |
| } |
| |
| __END_DECLS |
| |
| #endif /* __ANDROID_API__ < __ANDROID_API_L__ */ |
| |
| #endif /* _ANDROID_LEGACY_SIGNAL_INLINES_H_ */ |