1/* 2 * Copyright (c) 1999-2004 Damien Miller <djm@mindrot.org> 3 * 4 * Permission to use, copy, modify, and distribute this software for any 5 * purpose with or without fee is hereby granted, provided that the above 6 * copyright notice and this permission notice appear in all copies. 7 * 8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 15 */ 16 17#include "includes.h" 18 19#include <signal.h> 20#include <string.h> 21#include <unistd.h> 22 23#include "openbsd-compat/bsd-signal.h" 24 25#undef signal 26 27mysig_t 28mysignal(int sig, mysig_t act) 29{ 30#ifdef HAVE_SIGACTION 31 struct sigaction sa, osa; 32 33 if (sigaction(sig, NULL, &osa) == -1) 34 return (mysig_t) -1; 35 if (osa.sa_handler != act) { 36 memset(&sa, 0, sizeof(sa)); 37 sigemptyset(&sa.sa_mask); 38 sa.sa_flags = 0; 39#ifdef SA_INTERRUPT 40 if (sig == SIGALRM) 41 sa.sa_flags |= SA_INTERRUPT; 42#endif 43 sa.sa_handler = act; 44 if (sigaction(sig, &sa, NULL) == -1) 45 return (mysig_t) -1; 46 } 47 return (osa.sa_handler); 48#else 49 return (signal(sig, act)); 50#endif 51} 52 53#if !defined(HAVE_STRSIGNAL) 54char *strsignal(int sig) 55{ 56 static char buf[16]; 57 58 (void)snprintf(buf, sizeof(buf), "%d", sig); 59 return buf; 60} 61#endif 62 63