signals.c revision 1.3.2.2
1 1.3.2.2 yamt /* $NetBSD: signals.c,v 1.3.2.2 2010/08/11 22:55:07 yamt Exp $ */ 2 1.3.2.2 yamt 3 1.3.2.2 yamt /* 4 1.3.2.2 yamt * Copyright (c) 2010 Antti Kantee. All Rights Reserved. 5 1.3.2.2 yamt * 6 1.3.2.2 yamt * Redistribution and use in source and binary forms, with or without 7 1.3.2.2 yamt * modification, are permitted provided that the following conditions 8 1.3.2.2 yamt * are met: 9 1.3.2.2 yamt * 1. Redistributions of source code must retain the above copyright 10 1.3.2.2 yamt * notice, this list of conditions and the following disclaimer. 11 1.3.2.2 yamt * 2. Redistributions in binary form must reproduce the above copyright 12 1.3.2.2 yamt * notice, this list of conditions and the following disclaimer in the 13 1.3.2.2 yamt * documentation and/or other materials provided with the distribution. 14 1.3.2.2 yamt * 15 1.3.2.2 yamt * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 1.3.2.2 yamt * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 1.3.2.2 yamt * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 1.3.2.2 yamt * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 1.3.2.2 yamt * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 1.3.2.2 yamt * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 1.3.2.2 yamt * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 1.3.2.2 yamt * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 1.3.2.2 yamt * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 1.3.2.2 yamt * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 1.3.2.2 yamt * SUCH DAMAGE. 26 1.3.2.2 yamt */ 27 1.3.2.2 yamt 28 1.3.2.2 yamt #include <sys/cdefs.h> 29 1.3.2.2 yamt __KERNEL_RCSID(0, "$NetBSD: signals.c,v 1.3.2.2 2010/08/11 22:55:07 yamt Exp $"); 30 1.3.2.2 yamt 31 1.3.2.2 yamt #include <sys/param.h> 32 1.3.2.2 yamt #include <sys/atomic.h> 33 1.3.2.2 yamt #include <sys/event.h> 34 1.3.2.2 yamt #include <sys/proc.h> 35 1.3.2.2 yamt #include <sys/signal.h> 36 1.3.2.2 yamt 37 1.3.2.2 yamt #include <rump/rump.h> 38 1.3.2.2 yamt #include <rump/rumpuser.h> 39 1.3.2.2 yamt 40 1.3.2.2 yamt #include "rumpkern_if_priv.h" 41 1.3.2.2 yamt 42 1.3.2.2 yamt const struct filterops sig_filtops; 43 1.3.2.2 yamt sigset_t sigcantmask; 44 1.3.2.2 yamt 45 1.3.2.2 yamt /* RUMP_SIGMODEL_PANIC */ 46 1.3.2.2 yamt 47 1.3.2.2 yamt static void 48 1.3.2.2 yamt rumpsig_panic(pid_t target, int signo) 49 1.3.2.2 yamt { 50 1.3.2.2 yamt 51 1.3.2.2 yamt switch (signo) { 52 1.3.2.2 yamt case SIGSYS: 53 1.3.2.2 yamt break; 54 1.3.2.2 yamt default: 55 1.3.2.2 yamt panic("unhandled signal %d", signo); 56 1.3.2.2 yamt } 57 1.3.2.2 yamt } 58 1.3.2.2 yamt 59 1.3.2.2 yamt /* RUMP_SIGMODEL_IGNORE */ 60 1.3.2.2 yamt 61 1.3.2.2 yamt static void 62 1.3.2.2 yamt rumpsig_ignore(pid_t target, int signo) 63 1.3.2.2 yamt { 64 1.3.2.2 yamt 65 1.3.2.2 yamt return; 66 1.3.2.2 yamt } 67 1.3.2.2 yamt 68 1.3.2.2 yamt /* RUMP_SIGMODEL_HOST */ 69 1.3.2.2 yamt 70 1.3.2.2 yamt static void 71 1.3.2.2 yamt rumpsig_host(pid_t target, int signo) 72 1.3.2.2 yamt { 73 1.3.2.2 yamt int error; 74 1.3.2.2 yamt 75 1.3.2.2 yamt rumpuser_kill(target, signo, &error); 76 1.3.2.2 yamt } 77 1.3.2.2 yamt 78 1.3.2.2 yamt /* RUMP_SIGMODEL_RAISE */ 79 1.3.2.2 yamt 80 1.3.2.2 yamt static void 81 1.3.2.2 yamt rumpsig_raise(pid_t target, int signo) 82 1.3.2.2 yamt { 83 1.3.2.2 yamt int error; 84 1.3.2.2 yamt 85 1.3.2.2 yamt rumpuser_kill(RUMPUSER_PID_SELF, signo, &error); 86 1.3.2.2 yamt } 87 1.3.2.2 yamt 88 1.3.2.2 yamt typedef void (*rumpsig_fn)(pid_t pid, int sig); 89 1.3.2.2 yamt 90 1.3.2.2 yamt rumpsig_fn rumpsig = rumpsig_panic; 91 1.3.2.2 yamt 92 1.3.2.2 yamt /* 93 1.3.2.2 yamt * Set signal delivery model. It would be nice if we could 94 1.3.2.2 yamt * take a functional argument. But then we'd need some 95 1.3.2.2 yamt * OS independent way to represent a signal number and also 96 1.3.2.2 yamt * a method for easy processing (parsing is boring). 97 1.3.2.2 yamt * 98 1.3.2.2 yamt * Plus, upcalls from the rump kernel into process space except 99 1.3.2.2 yamt * via rumpuser is a somewhat gray area now. 100 1.3.2.2 yamt */ 101 1.3.2.2 yamt void 102 1.3.2.2 yamt rump_boot_setsigmodel(enum rump_sigmodel model) 103 1.3.2.2 yamt { 104 1.3.2.2 yamt 105 1.3.2.2 yamt switch (model) { 106 1.3.2.2 yamt case RUMP_SIGMODEL_PANIC: 107 1.3.2.2 yamt atomic_swap_ptr(&rumpsig, rumpsig_panic); 108 1.3.2.2 yamt break; 109 1.3.2.2 yamt case RUMP_SIGMODEL_IGNORE: 110 1.3.2.2 yamt atomic_swap_ptr(&rumpsig, rumpsig_ignore); 111 1.3.2.2 yamt break; 112 1.3.2.2 yamt case RUMP_SIGMODEL_HOST: 113 1.3.2.2 yamt atomic_swap_ptr(&rumpsig, rumpsig_host); 114 1.3.2.2 yamt break; 115 1.3.2.2 yamt case RUMP_SIGMODEL_RAISE: 116 1.3.2.2 yamt atomic_swap_ptr(&rumpsig, rumpsig_raise); 117 1.3.2.2 yamt break; 118 1.3.2.2 yamt } 119 1.3.2.2 yamt } 120 1.3.2.2 yamt 121 1.3.2.2 yamt void 122 1.3.2.2 yamt psignal(struct proc *p, int sig) 123 1.3.2.2 yamt { 124 1.3.2.2 yamt 125 1.3.2.2 yamt rumpsig(p->p_pid, sig); 126 1.3.2.2 yamt } 127 1.3.2.2 yamt 128 1.3.2.2 yamt void 129 1.3.2.2 yamt pgsignal(struct pgrp *pgrp, int sig, int checktty) 130 1.3.2.2 yamt { 131 1.3.2.2 yamt 132 1.3.2.2 yamt rumpsig(-pgrp->pg_id, sig); 133 1.3.2.2 yamt } 134 1.3.2.2 yamt 135 1.3.2.2 yamt void 136 1.3.2.2 yamt kpsignal(struct proc *p, ksiginfo_t *ksi, void *data) 137 1.3.2.2 yamt { 138 1.3.2.2 yamt 139 1.3.2.2 yamt rumpsig(p->p_pid, ksi->ksi_signo); 140 1.3.2.2 yamt } 141 1.3.2.2 yamt 142 1.3.2.2 yamt void 143 1.3.2.2 yamt kpgsignal(struct pgrp *pgrp, ksiginfo_t *ksi, void *data, int checkctty) 144 1.3.2.2 yamt { 145 1.3.2.2 yamt 146 1.3.2.2 yamt rumpsig(-pgrp->pg_id, ksi->ksi_signo); 147 1.3.2.2 yamt } 148 1.3.2.2 yamt 149 1.3.2.2 yamt int 150 1.3.2.2 yamt sigispending(struct lwp *l, int signo) 151 1.3.2.2 yamt { 152 1.3.2.2 yamt 153 1.3.2.2 yamt return 0; 154 1.3.2.2 yamt } 155 1.3.2.2 yamt 156 1.3.2.2 yamt void 157 1.3.2.2 yamt sigpending1(struct lwp *l, sigset_t *ss) 158 1.3.2.2 yamt { 159 1.3.2.2 yamt 160 1.3.2.2 yamt sigemptyset(ss); 161 1.3.2.2 yamt } 162 1.3.2.2 yamt 163 1.3.2.2 yamt int 164 1.3.2.2 yamt sigismasked(struct lwp *l, int sig) 165 1.3.2.2 yamt { 166 1.3.2.2 yamt 167 1.3.2.2 yamt return 0; 168 1.3.2.2 yamt } 169 1.3.2.2 yamt 170 1.3.2.2 yamt void 171 1.3.2.2 yamt sigclearall(struct proc *p, const sigset_t *mask, ksiginfoq_t *kq) 172 1.3.2.2 yamt { 173 1.3.2.2 yamt 174 1.3.2.2 yamt /* nada */ 175 1.3.2.2 yamt } 176 1.3.2.2 yamt 177 1.3.2.2 yamt void 178 1.3.2.2 yamt ksiginfo_queue_drain0(ksiginfoq_t *kq) 179 1.3.2.2 yamt { 180 1.3.2.2 yamt 181 1.3.2.2 yamt if (!(CIRCLEQ_EMPTY(kq))) 182 1.3.2.2 yamt panic("how did that get there?"); 183 1.3.2.2 yamt } 184 1.3.2.2 yamt 185 1.3.2.2 yamt void 186 1.3.2.2 yamt siginit(struct proc *p) 187 1.3.2.2 yamt { 188 1.3.2.2 yamt 189 1.3.2.2 yamt /* nada (?) */ 190 1.3.2.2 yamt } 191
Indexes created Tue Sep 30 07:10:03 GMT 2025