1 /* $NetBSD: linux_sig_notalpha.c,v 1.22 2000/03/30 11:27:17 augustss Exp $ */ 2 3 /*- 4 * Copyright (c) 1995, 1998 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Frank van der Linden and Eric Haszlakiewicz. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 /* 40 * heavily from: svr4_signal.c,v 1.7 1995/01/09 01:04:21 christos Exp 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/proc.h> 46 #include <sys/filedesc.h> 47 #include <sys/mount.h> 48 #include <sys/kernel.h> 49 #include <sys/signal.h> 50 #include <sys/signalvar.h> 51 52 #include <sys/syscallargs.h> 53 54 #include <compat/linux/common/linux_types.h> 55 #include <compat/linux/common/linux_signal.h> 56 #include <compat/linux/common/linux_util.h> 57 58 #include <compat/linux/linux_syscallargs.h> 59 60 /* Used on: arm, i386, m68k, mips, sparc, sparc64 */ 61 /* Not used on: alpha */ 62 63 /* 64 * The Linux signal() system call. I think that the signal() in the C 65 * library actually calls sigaction, so I doubt this one is ever used. 66 * But hey, it can't hurt having it here. The same restrictions as for 67 * sigaction() apply. 68 */ 69 int 70 linux_sys_signal(p, v, retval) 71 struct proc *p; 72 void *v; 73 register_t *retval; 74 { 75 struct linux_sys_signal_args /* { 76 syscallarg(int) signum; 77 syscallarg(linux_handler_t) handler; 78 } */ *uap = v; 79 struct sigaction nbsa, obsa; 80 int error, sig; 81 82 *retval = -1; 83 sig = SCARG(uap, signum); 84 if (sig < 0 || sig >= LINUX__NSIG) 85 return (EINVAL); 86 87 nbsa.sa_handler = SCARG(uap, handler); 88 sigemptyset(&nbsa.sa_mask); 89 nbsa.sa_flags = SA_RESETHAND | SA_NODEFER; 90 error = sigaction1(p, linux_to_native_sig[sig], 91 &nbsa, &obsa); 92 if (error == 0) 93 *retval = (int)obsa.sa_handler; 94 return (error); 95 } 96 97 98 /* ARGSUSED */ 99 int 100 linux_sys_siggetmask(p, v, retval) 101 struct proc *p; 102 void *v; 103 register_t *retval; 104 { 105 sigset_t bss; 106 linux_old_sigset_t lss; 107 int error; 108 109 error = sigprocmask1(p, SIG_SETMASK, 0, &bss); 110 if (error) 111 return (error); 112 native_to_linux_old_sigset(&bss, &lss); 113 return (0); 114 } 115 116 /* 117 * The following three functions fiddle with a process' signal mask. 118 * Convert the signal masks because of the different signal 119 * values for Linux. The need for this is the reason why 120 * they are here, and have not been mapped directly. 121 */ 122 int 123 linux_sys_sigsetmask(p, v, retval) 124 struct proc *p; 125 void *v; 126 register_t *retval; 127 { 128 struct linux_sys_sigsetmask_args /* { 129 syscallarg(linux_old_sigset_t) mask; 130 } */ *uap = v; 131 sigset_t nbss, obss; 132 linux_old_sigset_t nlss, olss; 133 int error; 134 135 nlss = SCARG(uap, mask); 136 linux_old_to_native_sigset(&nlss, &nbss); 137 error = sigprocmask1(p, SIG_SETMASK, &nbss, &obss); 138 if (error) 139 return (error); 140 native_to_linux_old_sigset(&obss, &olss); 141 *retval = olss; 142 return (0); 143 } 144 145 int 146 linux_sys_sigprocmask(p, v, retval) 147 struct proc *p; 148 void *v; 149 register_t *retval; 150 { 151 struct linux_sys_sigprocmask_args /* { 152 syscallarg(int) how; 153 syscallarg(const linux_old_sigset_t *) set; 154 syscallarg(linux_old_sigset_t *) oset; 155 } */ *uap = v; 156 157 return(linux_sigprocmask1(p, SCARG(uap, how), 158 SCARG(uap, set), SCARG(uap, oset))); 159 } 160 161 /* 162 * The deprecated pause(2), which is really just an instance 163 * of sigsuspend(2). 164 */ 165 int 166 linux_sys_pause(p, v, retval) 167 struct proc *p; 168 void *v; 169 register_t *retval; 170 { 171 172 return (sigsuspend1(p, 0)); 173 } 174 175