Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
FreeBSD/Linux Kernel Cross Reference
sys/sys/signalvar.h
Version:
- FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
SearchContext: - none - 3 - 10
1 /* $NetBSD: signalvar.h,v 1.68 2006/11/01 09:46:14 yamt Exp $ */ 2 3 /* 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)signalvar.h 8.6 (Berkeley) 2/19/95 32 */ 33 34 #ifndef _SYS_SIGNALVAR_H_ /* tmp for user.h */ 35 #define _SYS_SIGNALVAR_H_ 36 37 #include <sys/siginfo.h> 38 #include <sys/lock.h> 39 #include <sys/queue.h> 40 41 /* 42 * Kernel signal definitions and data structures, 43 * not exported to user programs. 44 */ 45 46 /* 47 * Process signal actions, possibly shared between threads. 48 */ 49 struct sigacts { 50 struct sigact_sigdesc { 51 struct sigaction sd_sigact; 52 const void *sd_tramp; 53 int sd_vers; 54 } sa_sigdesc[NSIG]; /* disposition of signals */ 55 56 int sa_refcnt; /* reference count */ 57 }; 58 59 /* 60 * Process signal state. 61 */ 62 struct sigctx { 63 /* This needs to be zeroed on fork */ 64 sigset_t ps_siglist; /* Signals arrived but not delivered. */ 65 char ps_sigcheck; /* May have deliverable signals. */ 66 struct ksiginfo *ps_sigwaited; /* Delivered signal from wait set */ 67 const sigset_t *ps_sigwait; /* Signals being waited for */ 68 struct simplelock ps_silock; /* Lock for ps_siginfo */ 69 CIRCLEQ_HEAD(, ksiginfo) ps_siginfo;/* for SA_SIGINFO */ 70 71 /* This should be copied on fork */ 72 #define ps_startcopy ps_sigstk 73 struct sigaltstack ps_sigstk; /* sp & on stack state variable */ 74 sigset_t ps_oldmask; /* saved mask from before sigpause */ 75 int ps_flags; /* signal flags, below */ 76 int ps_signo; /* for core dump/debugger XXX */ 77 int ps_code; /* for core dump/debugger XXX */ 78 int ps_lwp; /* for core dump/debugger XXX */ 79 void *ps_sigcode; /* address of signal trampoline */ 80 sigset_t ps_sigmask; /* Current signal mask. */ 81 sigset_t ps_sigignore; /* Signals being ignored. */ 82 sigset_t ps_sigcatch; /* Signals being caught by user. */ 83 }; 84 85 /* signal flags */ 86 #define SAS_OLDMASK 0x01 /* need to restore mask before pause */ 87 88 /* additional signal action values, used only temporarily/internally */ 89 #define SIG_CATCH (void (*)(int))2 90 91 /* 92 * get signal action for process and signal; currently only for current process 93 */ 94 #define SIGACTION(p, sig) (p->p_sigacts->sa_sigdesc[(sig)].sd_sigact) 95 #define SIGACTION_PS(ps, sig) (ps->sa_sigdesc[(sig)].sd_sigact) 96 97 /* 98 * Mark that signals for a process need to be checked. 99 */ 100 #define CHECKSIGS(p) \ 101 do { \ 102 (p)->p_sigctx.ps_sigcheck = 1; \ 103 signotify(p); \ 104 } while (/* CONSTCOND */ 0) 105 106 /* 107 * Determine signal that should be delivered to process p, the current 108 * process, 0 if none. If there is a pending stop signal with default 109 * action, the process stops in issignal(). 110 */ 111 #define CURSIG(l) (l->l_proc->p_sigctx.ps_sigcheck ? issignal(l) : 0) 112 113 /* 114 * Clear all pending signal from a process. 115 */ 116 #define CLRSIG(l) \ 117 do { \ 118 int _sg; \ 119 while ((_sg = CURSIG(l)) != 0) \ 120 sigdelset(&(l)->l_proc->p_sigctx.ps_siglist, _sg); \ 121 } while (/*CONSTCOND*/0) 122 123 /* 124 * Signal properties and actions. 125 * The array below categorizes the signals and their default actions 126 * according to the following properties: 127 */ 128 #define SA_KILL 0x01 /* terminates process by default */ 129 #define SA_CORE 0x02 /* ditto and coredumps */ 130 #define SA_STOP 0x04 /* suspend process */ 131 #define SA_TTYSTOP 0x08 /* ditto, from tty */ 132 #define SA_IGNORE 0x10 /* ignore by default */ 133 #define SA_CONT 0x20 /* continue if suspended */ 134 #define SA_CANTMASK 0x40 /* non-maskable, catchable */ 135 #define SA_NORESET 0x80 /* not reset when caught */ 136 137 #ifdef _KERNEL 138 139 #include <sys/systm.h> /* for copyin_t/copyout_t */ 140 141 extern sigset_t contsigmask, stopsigmask, sigcantmask; 142 143 struct vnode; 144 145 /* 146 * Machine-independent functions: 147 */ 148 int coredump(struct lwp *, const char *); 149 int coredump_netbsd(struct lwp *, void *); 150 void execsigs(struct proc *); 151 void gsignal(int, int); 152 void kgsignal(int, struct ksiginfo *, void *); 153 int issignal(struct lwp *); 154 void pgsignal(struct pgrp *, int, int); 155 void kpgsignal(struct pgrp *, struct ksiginfo *, void *, int); 156 void postsig(int); 157 void psignal(struct proc *, int); 158 void kpsignal(struct proc *, struct ksiginfo *, void *); 159 void child_psignal(struct proc *); 160 void siginit(struct proc *); 161 void trapsignal(struct lwp *, const struct ksiginfo *); 162 void sigexit(struct lwp *, int); 163 void killproc(struct proc *, const char *); 164 void setsigvec(struct proc *, int, struct sigaction *); 165 int killpg1(struct lwp *, struct ksiginfo *, int, int); 166 struct lwp *proc_unstop(struct proc *p); 167 168 int sigaction1(struct proc *, int, const struct sigaction *, 169 struct sigaction *, const void *, int); 170 int sigprocmask1(struct proc *, int, const sigset_t *, sigset_t *); 171 void sigpending1(struct proc *, sigset_t *); 172 int sigsuspend1(struct proc *, const sigset_t *); 173 int sigaltstack1(struct proc *, const struct sigaltstack *, 174 struct sigaltstack *); 175 int sigismasked(struct proc *, int); 176 177 void signal_init(void); 178 179 void sigactsinit(struct proc *, struct proc *, int); 180 void sigactsunshare(struct proc *); 181 void sigactsfree(struct sigacts *); 182 183 void kpsendsig(struct lwp *, const struct ksiginfo *, const sigset_t *); 184 siginfo_t *siginfo_alloc(int); 185 void siginfo_free(void *); 186 187 int __sigtimedwait1(struct lwp *, void *, register_t *, copyout_t, 188 copyin_t, copyout_t); 189 190 /* 191 * Machine-dependent functions: 192 */ 193 void sendsig(const struct ksiginfo *, const sigset_t *); 194 195 #endif /* _KERNEL */ 196 197 #ifdef _KERNEL 198 #ifdef SIGPROP 199 const int sigprop[NSIG] = { 200 0, /* 0 unused */ 201 SA_KILL, /* 1 SIGHUP */ 202 SA_KILL, /* 2 SIGINT */ 203 SA_KILL|SA_CORE, /* 3 SIGQUIT */ 204 SA_KILL|SA_CORE|SA_NORESET, /* 4 SIGILL */ 205 SA_KILL|SA_CORE|SA_NORESET, /* 5 SIGTRAP */ 206 SA_KILL|SA_CORE, /* 6 SIGABRT */ 207 SA_KILL|SA_CORE, /* 7 SIGEMT */ 208 SA_KILL|SA_CORE, /* 8 SIGFPE */ 209 SA_KILL|SA_CANTMASK, /* 9 SIGKILL */ 210 SA_KILL|SA_CORE, /* 10 SIGBUS */ 211 SA_KILL|SA_CORE, /* 11 SIGSEGV */ 212 SA_KILL|SA_CORE, /* 12 SIGSYS */ 213 SA_KILL, /* 13 SIGPIPE */ 214 SA_KILL, /* 14 SIGALRM */ 215 SA_KILL, /* 15 SIGTERM */ 216 SA_IGNORE, /* 16 SIGURG */ 217 SA_STOP|SA_CANTMASK, /* 17 SIGSTOP */ 218 SA_STOP|SA_TTYSTOP, /* 18 SIGTSTP */ 219 SA_IGNORE|SA_CONT, /* 19 SIGCONT */ 220 SA_IGNORE, /* 20 SIGCHLD */ 221 SA_STOP|SA_TTYSTOP, /* 21 SIGTTIN */ 222 SA_STOP|SA_TTYSTOP, /* 22 SIGTTOU */ 223 SA_IGNORE, /* 23 SIGIO */ 224 SA_KILL, /* 24 SIGXCPU */ 225 SA_KILL, /* 25 SIGXFSZ */ 226 SA_KILL, /* 26 SIGVTALRM */ 227 SA_KILL, /* 27 SIGPROF */ 228 SA_IGNORE, /* 28 SIGWINCH */ 229 SA_IGNORE, /* 29 SIGINFO */ 230 SA_KILL, /* 30 SIGUSR1 */ 231 SA_KILL, /* 31 SIGUSR2 */ 232 SA_IGNORE|SA_NORESET, /* 32 SIGPWR */ 233 SA_KILL, /* 33 SIGRTMIN + 0 */ 234 SA_KILL, /* 34 SIGRTMIN + 1 */ 235 SA_KILL, /* 35 SIGRTMIN + 2 */ 236 SA_KILL, /* 36 SIGRTMIN + 3 */ 237 SA_KILL, /* 37 SIGRTMIN + 4 */ 238 SA_KILL, /* 38 SIGRTMIN + 5 */ 239 SA_KILL, /* 39 SIGRTMIN + 6 */ 240 SA_KILL, /* 40 SIGRTMIN + 7 */ 241 SA_KILL, /* 41 SIGRTMIN + 8 */ 242 SA_KILL, /* 42 SIGRTMIN + 9 */ 243 SA_KILL, /* 43 SIGRTMIN + 10 */ 244 SA_KILL, /* 44 SIGRTMIN + 11 */ 245 SA_KILL, /* 45 SIGRTMIN + 12 */ 246 SA_KILL, /* 46 SIGRTMIN + 13 */ 247 SA_KILL, /* 47 SIGRTMIN + 14 */ 248 SA_KILL, /* 48 SIGRTMIN + 15 */ 249 SA_KILL, /* 49 SIGRTMIN + 16 */ 250 SA_KILL, /* 50 SIGRTMIN + 17 */ 251 SA_KILL, /* 51 SIGRTMIN + 18 */ 252 SA_KILL, /* 52 SIGRTMIN + 19 */ 253 SA_KILL, /* 53 SIGRTMIN + 20 */ 254 SA_KILL, /* 54 SIGRTMIN + 21 */ 255 SA_KILL, /* 55 SIGRTMIN + 22 */ 256 SA_KILL, /* 56 SIGRTMIN + 23 */ 257 SA_KILL, /* 57 SIGRTMIN + 24 */ 258 SA_KILL, /* 58 SIGRTMIN + 25 */ 259 SA_KILL, /* 59 SIGRTMIN + 26 */ 260 SA_KILL, /* 60 SIGRTMIN + 27 */ 261 SA_KILL, /* 61 SIGRTMIN + 28 */ 262 SA_KILL, /* 62 SIGRTMIN + 29 */ 263 SA_KILL, /* 63 SIGRTMIN + 30 */ 264 }; 265 #undef SIGPROP 266 #else 267 extern const int sigprop[NSIG]; 268 #endif /* SIGPROP */ 269 #endif /* _KERNEL */ 270 #endif /* !_SYS_SIGNALVAR_H_ */
Cache object: 0c0cc603b781e96478a3bae755dd8d77
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]