linux_sig_notalpha.c revision 1.18
1 /* $NetBSD: linux_sig_notalpha.c,v 1.18 1998/10/07 23:05:09 erh 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 register struct proc *p; 72 void *v; 73 register_t *retval; 74 { 75 struct linux_sys_signal_args /* { 76 syscallarg(int) sig; 77 syscallarg(linux_handler_t) handler; 78 } */ *uap = v; 79 struct sigaction nbsa, obsa; 80 int error; 81 82 nbsa.sa_handler = SCARG(uap, handler); 83 sigemptyset(&nbsa.sa_mask); 84 nbsa.sa_flags = SA_RESETHAND | SA_NODEFER; 85 error = sigaction1(p, linux_to_native_sig[SCARG(uap, sig)], 86 &nbsa, &obsa); 87 if (error) 88 return (error); 89 *retval = (int)obsa.sa_handler; 90 return (0); 91 } 92 93 94 /* ARGSUSED */ 95 int 96 linux_sys_siggetmask(p, v, retval) 97 register struct proc *p; 98 void *v; 99 register_t *retval; 100 { 101 sigset_t bss; 102 linux_old_sigset_t lss; 103 int error; 104 105 error = sigprocmask1(p, SIG_SETMASK, 0, &bss); 106 if (error) 107 return (error); 108 native_to_linux_old_sigset(&bss, &lss); 109 return (0); 110 } 111 112 /* 113 * The following three functions fiddle with a process' signal mask. 114 * Convert the signal masks because of the different signal 115 * values for Linux. The need for this is the reason why 116 * they are here, and have not been mapped directly. 117 */ 118 int 119 linux_sys_sigsetmask(p, v, retval) 120 register struct proc *p; 121 void *v; 122 register_t *retval; 123 { 124 struct linux_sys_sigsetmask_args /* { 125 syscallarg(linux_old_sigset_t) mask; 126 } */ *uap = v; 127 sigset_t nbss, obss; 128 linux_old_sigset_t nlss, olss; 129 int error; 130 131 nlss = SCARG(uap, mask); 132 linux_old_to_native_sigset(&nlss, &nbss); 133 error = sigprocmask1(p, SIG_SETMASK, &nbss, &obss); 134 if (error) 135 return (error); 136 native_to_linux_old_sigset(&obss, &olss); 137 *retval = olss; 138 return (0); 139 } 140 141 int 142 linux_sys_sigprocmask(p, v, retval) 143 register struct proc *p; 144 void *v; 145 register_t *retval; 146 { 147 struct linux_sys_sigprocmask_args /* { 148 syscallarg(int) how; 149 syscallarg(const linux_old_sigset_t *) set; 150 syscallarg(linux_old_sigset_t *) oset; 151 } */ *uap = v; 152 153 return(linux_sigprocmask1(p, SCARG(uap, how), 154 SCARG(uap, set), SCARG(uap, oset))); 155 } 156 157 /* 158 * The deprecated pause(2), which is really just an instance 159 * of sigsuspend(2). 160 */ 161 int 162 linux_sys_pause(p, v, retval) 163 register struct proc *p; 164 void *v; 165 register_t *retval; 166 { 167 168 return (sigsuspend1(p, 0)); 169 } 170
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