1 /* 2 * Copyright (C) 2015 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _ANDROID_LEGACY_SIGNAL_INLINES_H_ 30 #define _ANDROID_LEGACY_SIGNAL_INLINES_H_ 31 32 #include <errno.h> 33 #include <signal.h> 34 #include <string.h> 35 #include <sys/cdefs.h> 36 37 38 __BEGIN_DECLS 39 40 sighandler_t bsd_signal(int signum, sighandler_t handler) __REMOVED_IN(21); 41 42 #if __ANDROID_API__ < __ANDROID_API_L__ 43 44 static __inline int sigismember(const sigset_t *set, int signum) { 45 /* Signal numbers start at 1, but bit positions start at 0. */ 46 int bit = signum - 1; 47 const unsigned long *local_set = (const unsigned long *)set; 48 if (set == NULL || bit < 0 || bit >= (int)(8 * sizeof(sigset_t))) { 49 errno = EINVAL; 50 return -1; 51 } 52 return (int)((local_set[bit / LONG_BIT] >> (bit % LONG_BIT)) & 1); 53 } 54 55 static __inline int sigaddset(sigset_t *set, int signum) { 56 /* Signal numbers start at 1, but bit positions start at 0. */ 57 int bit = signum - 1; 58 unsigned long *local_set = (unsigned long *)set; 59 if (set == NULL || bit < 0 || bit >= (int)(8 * sizeof(sigset_t))) { 60 errno = EINVAL; 61 return -1; 62 } 63 local_set[bit / LONG_BIT] |= 1UL << (bit % LONG_BIT); 64 return 0; 65 } 66 67 static __inline int sigdelset(sigset_t *set, int signum) { 68 /* Signal numbers start at 1, but bit positions start at 0. */ 69 int bit = signum - 1; 70 unsigned long *local_set = (unsigned long *)set; 71 if (set == NULL || bit < 0 || bit >= (int)(8 * sizeof(sigset_t))) { 72 errno = EINVAL; 73 return -1; 74 } 75 local_set[bit / LONG_BIT] &= ~(1UL << (bit % LONG_BIT)); 76 return 0; 77 } 78 79 static __inline int sigemptyset(sigset_t *set) { 80 if (set == NULL) { 81 errno = EINVAL; 82 return -1; 83 } 84 memset(set, 0, sizeof(sigset_t)); 85 return 0; 86 } 87 88 static __inline int sigfillset(sigset_t *set) { 89 if (set == NULL) { 90 errno = EINVAL; 91 return -1; 92 } 93 memset(set, ~0, sizeof(sigset_t)); 94 return 0; 95 } 96 97 static __inline sighandler_t signal(int s, sighandler_t f) { 98 return bsd_signal(s, f); 99 } 100 101 #endif /* __ANDROID_API__ < __ANDROID_API_L__ */ 102 103 __END_DECLS 104 105 #endif /* _ANDROID_LEGACY_SIGNAL_INLINES_H_ */ 106
