signals.c revision 1.2.4.3
1 1.2.4.3 rmind /* $NetBSD: signals.c,v 1.2.4.3 2010/07/03 01:20:02 rmind Exp $ */ 2 1.2.4.2 rmind 3 1.2.4.2 rmind /* 4 1.2.4.2 rmind * Copyright (c) 2010 Antti Kantee. All Rights Reserved. 5 1.2.4.2 rmind * 6 1.2.4.2 rmind * Redistribution and use in source and binary forms, with or without 7 1.2.4.2 rmind * modification, are permitted provided that the following conditions 8 1.2.4.2 rmind * are met: 9 1.2.4.2 rmind * 1. Redistributions of source code must retain the above copyright 10 1.2.4.2 rmind * notice, this list of conditions and the following disclaimer. 11 1.2.4.2 rmind * 2. Redistributions in binary form must reproduce the above copyright 12 1.2.4.2 rmind * notice, this list of conditions and the following disclaimer in the 13 1.2.4.2 rmind * documentation and/or other materials provided with the distribution. 14 1.2.4.2 rmind * 15 1.2.4.2 rmind * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 1.2.4.2 rmind * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 1.2.4.2 rmind * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 1.2.4.2 rmind * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 1.2.4.2 rmind * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 1.2.4.2 rmind * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 1.2.4.2 rmind * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 1.2.4.2 rmind * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 1.2.4.2 rmind * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 1.2.4.2 rmind * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 1.2.4.2 rmind * SUCH DAMAGE. 26 1.2.4.2 rmind */ 27 1.2.4.2 rmind 28 1.2.4.2 rmind #include <sys/cdefs.h> 29 1.2.4.3 rmind __KERNEL_RCSID(0, "$NetBSD: signals.c,v 1.2.4.3 2010/07/03 01:20:02 rmind Exp $"); 30 1.2.4.2 rmind 31 1.2.4.2 rmind #include <sys/param.h> 32 1.2.4.2 rmind #include <sys/atomic.h> 33 1.2.4.2 rmind #include <sys/event.h> 34 1.2.4.2 rmind #include <sys/proc.h> 35 1.2.4.2 rmind #include <sys/signal.h> 36 1.2.4.2 rmind 37 1.2.4.2 rmind #include <rump/rump.h> 38 1.2.4.2 rmind #include <rump/rumpuser.h> 39 1.2.4.2 rmind 40 1.2.4.2 rmind #include "rumpkern_if_priv.h" 41 1.2.4.2 rmind 42 1.2.4.2 rmind const struct filterops sig_filtops; 43 1.2.4.2 rmind sigset_t sigcantmask; 44 1.2.4.2 rmind 45 1.2.4.2 rmind /* RUMP_SIGMODEL_PANIC */ 46 1.2.4.2 rmind 47 1.2.4.2 rmind static void 48 1.2.4.2 rmind rumpsig_panic(pid_t target, int signo) 49 1.2.4.2 rmind { 50 1.2.4.2 rmind 51 1.2.4.2 rmind switch (signo) { 52 1.2.4.2 rmind case SIGSYS: 53 1.2.4.2 rmind break; 54 1.2.4.2 rmind default: 55 1.2.4.2 rmind panic("unhandled signal %d", signo); 56 1.2.4.2 rmind } 57 1.2.4.2 rmind } 58 1.2.4.2 rmind 59 1.2.4.2 rmind /* RUMP_SIGMODEL_IGNORE */ 60 1.2.4.2 rmind 61 1.2.4.2 rmind static void 62 1.2.4.2 rmind rumpsig_ignore(pid_t target, int signo) 63 1.2.4.2 rmind { 64 1.2.4.2 rmind 65 1.2.4.2 rmind return; 66 1.2.4.2 rmind } 67 1.2.4.2 rmind 68 1.2.4.2 rmind /* RUMP_SIGMODEL_HOST */ 69 1.2.4.2 rmind 70 1.2.4.2 rmind static void 71 1.2.4.2 rmind rumpsig_host(pid_t target, int signo) 72 1.2.4.2 rmind { 73 1.2.4.2 rmind int error; 74 1.2.4.2 rmind 75 1.2.4.2 rmind rumpuser_kill(target, signo, &error); 76 1.2.4.2 rmind } 77 1.2.4.2 rmind 78 1.2.4.2 rmind /* RUMP_SIGMODEL_RAISE */ 79 1.2.4.2 rmind 80 1.2.4.2 rmind static void 81 1.2.4.2 rmind rumpsig_raise(pid_t target, int signo) 82 1.2.4.2 rmind { 83 1.2.4.2 rmind int error; 84 1.2.4.2 rmind 85 1.2.4.2 rmind rumpuser_kill(RUMPUSER_PID_SELF, signo, &error); 86 1.2.4.2 rmind } 87 1.2.4.2 rmind 88 1.2.4.2 rmind typedef void (*rumpsig_fn)(pid_t pid, int sig); 89 1.2.4.2 rmind 90 1.2.4.2 rmind rumpsig_fn rumpsig = rumpsig_panic; 91 1.2.4.2 rmind 92 1.2.4.2 rmind /* 93 1.2.4.2 rmind * Set signal delivery model. It would be nice if we could 94 1.2.4.2 rmind * take a functional argument. But then we'd need some 95 1.2.4.2 rmind * OS independent way to represent a signal number and also 96 1.2.4.2 rmind * a method for easy processing (parsing is boring). 97 1.2.4.2 rmind * 98 1.2.4.2 rmind * Plus, upcalls from the rump kernel into process space except 99 1.2.4.2 rmind * via rumpuser is a somewhat gray area now. 100 1.2.4.2 rmind */ 101 1.2.4.2 rmind void 102 1.2.4.2 rmind rump_boot_setsigmodel(enum rump_sigmodel model) 103 1.2.4.2 rmind { 104 1.2.4.2 rmind 105 1.2.4.2 rmind switch (model) { 106 1.2.4.2 rmind case RUMP_SIGMODEL_PANIC: 107 1.2.4.2 rmind atomic_swap_ptr(&rumpsig, rumpsig_panic); 108 1.2.4.2 rmind break; 109 1.2.4.2 rmind case RUMP_SIGMODEL_IGNORE: 110 1.2.4.2 rmind atomic_swap_ptr(&rumpsig, rumpsig_ignore); 111 1.2.4.2 rmind break; 112 1.2.4.2 rmind case RUMP_SIGMODEL_HOST: 113 1.2.4.2 rmind atomic_swap_ptr(&rumpsig, rumpsig_host); 114 1.2.4.2 rmind break; 115 1.2.4.2 rmind case RUMP_SIGMODEL_RAISE: 116 1.2.4.2 rmind atomic_swap_ptr(&rumpsig, rumpsig_raise); 117 1.2.4.2 rmind break; 118 1.2.4.2 rmind } 119 1.2.4.2 rmind } 120 1.2.4.2 rmind 121 1.2.4.2 rmind void 122 1.2.4.2 rmind psignal(struct proc *p, int sig) 123 1.2.4.2 rmind { 124 1.2.4.2 rmind 125 1.2.4.2 rmind rumpsig(p->p_pid, sig); 126 1.2.4.2 rmind } 127 1.2.4.2 rmind 128 1.2.4.2 rmind void 129 1.2.4.2 rmind pgsignal(struct pgrp *pgrp, int sig, int checktty) 130 1.2.4.2 rmind { 131 1.2.4.2 rmind 132 1.2.4.2 rmind rumpsig(-pgrp->pg_id, sig); 133 1.2.4.2 rmind } 134 1.2.4.2 rmind 135 1.2.4.2 rmind void 136 1.2.4.2 rmind kpsignal(struct proc *p, ksiginfo_t *ksi, void *data) 137 1.2.4.2 rmind { 138 1.2.4.2 rmind 139 1.2.4.2 rmind rumpsig(p->p_pid, ksi->ksi_signo); 140 1.2.4.2 rmind } 141 1.2.4.2 rmind 142 1.2.4.2 rmind void 143 1.2.4.2 rmind kpgsignal(struct pgrp *pgrp, ksiginfo_t *ksi, void *data, int checkctty) 144 1.2.4.2 rmind { 145 1.2.4.2 rmind 146 1.2.4.2 rmind rumpsig(-pgrp->pg_id, ksi->ksi_signo); 147 1.2.4.2 rmind } 148 1.2.4.2 rmind 149 1.2.4.2 rmind int 150 1.2.4.2 rmind sigispending(struct lwp *l, int signo) 151 1.2.4.2 rmind { 152 1.2.4.2 rmind 153 1.2.4.2 rmind return 0; 154 1.2.4.2 rmind } 155 1.2.4.2 rmind 156 1.2.4.2 rmind void 157 1.2.4.2 rmind sigpending1(struct lwp *l, sigset_t *ss) 158 1.2.4.2 rmind { 159 1.2.4.2 rmind 160 1.2.4.2 rmind sigemptyset(ss); 161 1.2.4.2 rmind } 162 1.2.4.2 rmind 163 1.2.4.2 rmind int 164 1.2.4.2 rmind sigismasked(struct lwp *l, int sig) 165 1.2.4.2 rmind { 166 1.2.4.2 rmind 167 1.2.4.2 rmind return 0; 168 1.2.4.2 rmind } 169 1.2.4.2 rmind 170 1.2.4.2 rmind void 171 1.2.4.2 rmind sigclearall(struct proc *p, const sigset_t *mask, ksiginfoq_t *kq) 172 1.2.4.2 rmind { 173 1.2.4.2 rmind 174 1.2.4.2 rmind /* nada */ 175 1.2.4.2 rmind } 176 1.2.4.2 rmind 177 1.2.4.2 rmind void 178 1.2.4.2 rmind ksiginfo_queue_drain0(ksiginfoq_t *kq) 179 1.2.4.2 rmind { 180 1.2.4.2 rmind 181 1.2.4.2 rmind if (!(CIRCLEQ_EMPTY(kq))) 182 1.2.4.2 rmind panic("how did that get there?"); 183 1.2.4.2 rmind } 184 1.2.4.3 rmind 185 1.2.4.3 rmind void 186 1.2.4.3 rmind siginit(struct proc *p) 187 1.2.4.3 rmind { 188 1.2.4.3 rmind 189 1.2.4.3 rmind /* nada (?) */ 190 1.2.4.3 rmind } 191
Indexes created Tue Sep 30 07:10:03 GMT 2025