695 lines
17 KiB
C
695 lines
17 KiB
C
/* $NetBSD: svr4_32_signal.c,v 1.21 2007/06/16 20:04:29 dsl Exp $ */
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/*-
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* Copyright (c) 1994, 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Christos Zoulas and by Charles M. Hannum.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: svr4_32_signal.c,v 1.21 2007/06/16 20:04:29 dsl Exp $");
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#if defined(_KERNEL_OPT)
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#include "opt_compat_svr4.h"
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#endif
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/namei.h>
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#include <sys/proc.h>
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#include <sys/filedesc.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include <sys/kernel.h>
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#include <sys/signal.h>
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#include <sys/signalvar.h>
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#include <sys/malloc.h>
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#include <sys/wait.h>
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#include <sys/syscallargs.h>
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#include <compat/svr4_32/svr4_32_types.h>
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#include <compat/svr4_32/svr4_32_signal.h>
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#include <compat/svr4_32/svr4_32_lwp.h>
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#include <compat/svr4_32/svr4_32_ucontext.h>
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#include <compat/svr4_32/svr4_32_syscallargs.h>
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#include <compat/svr4_32/svr4_32_util.h>
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#include <compat/common/compat_sigaltstack.h>
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#define svr4_sigmask(n) (1 << (((n) - 1) & 31))
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#define svr4_sigword(n) (((n) - 1) >> 5)
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#define svr4_sigemptyset(s) memset((s), 0, sizeof(*(s)))
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#define svr4_sigismember(s, n) ((s)->bits[svr4_sigword(n)] & svr4_sigmask(n))
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#define svr4_sigaddset(s, n) ((s)->bits[svr4_sigword(n)] |= svr4_sigmask(n))
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static inline void svr4_32_sigfillset __P((svr4_32_sigset_t *));
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void svr4_32_to_native_sigaction __P((const struct svr4_32_sigaction *,
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struct sigaction *));
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void native_to_svr4_32_sigaction __P((const struct sigaction *,
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struct svr4_32_sigaction *));
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#ifndef COMPAT_SVR4
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const int native_to_svr4_signo[NSIG] = {
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0, /* 0 */
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SVR4_SIGHUP, /* 1 */
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SVR4_SIGINT, /* 2 */
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SVR4_SIGQUIT, /* 3 */
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SVR4_SIGILL, /* 4 */
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SVR4_SIGTRAP, /* 5 */
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SVR4_SIGABRT, /* 6 */
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SVR4_SIGEMT, /* 7 */
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SVR4_SIGFPE, /* 8 */
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SVR4_SIGKILL, /* 9 */
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SVR4_SIGBUS, /* 10 */
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SVR4_SIGSEGV, /* 11 */
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SVR4_SIGSYS, /* 12 */
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SVR4_SIGPIPE, /* 13 */
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SVR4_SIGALRM, /* 14 */
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SVR4_SIGTERM, /* 15 */
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SVR4_SIGURG, /* 16 */
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SVR4_SIGSTOP, /* 17 */
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SVR4_SIGTSTP, /* 18 */
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SVR4_SIGCONT, /* 19 */
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SVR4_SIGCHLD, /* 20 */
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SVR4_SIGTTIN, /* 21 */
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SVR4_SIGTTOU, /* 22 */
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SVR4_SIGIO, /* 23 */
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SVR4_SIGXCPU, /* 24 */
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SVR4_SIGXFSZ, /* 25 */
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SVR4_SIGVTALRM, /* 26 */
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SVR4_SIGPROF, /* 27 */
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SVR4_SIGWINCH, /* 28 */
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0, /* 29 SIGINFO */
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SVR4_SIGUSR1, /* 30 */
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SVR4_SIGUSR2, /* 31 */
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SVR4_SIGPWR, /* 32 */
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SVR4_SIGRTMIN + 0, /* 33 */
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SVR4_SIGRTMIN + 1, /* 34 */
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SVR4_SIGRTMIN + 2, /* 35 */
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SVR4_SIGRTMIN + 3, /* 36 */
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SVR4_SIGRTMIN + 4, /* 37 */
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SVR4_SIGRTMIN + 5, /* 38 */
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SVR4_SIGRTMIN + 6, /* 39 */
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SVR4_SIGRTMIN + 7, /* 40 */
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SVR4_SIGRTMIN + 8, /* 41 */
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SVR4_SIGRTMIN + 9, /* 42 */
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SVR4_SIGRTMIN + 10, /* 43 */
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SVR4_SIGRTMIN + 11, /* 44 */
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SVR4_SIGRTMIN + 12, /* 45 */
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SVR4_SIGRTMIN + 13, /* 46 */
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SVR4_SIGRTMIN + 14, /* 47 */
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SVR4_SIGRTMIN + 15, /* 48 */
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SVR4_SIGRTMIN + 16, /* 49 */
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SVR4_SIGRTMIN + 17, /* 50 */
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SVR4_SIGRTMIN + 18, /* 51 */
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SVR4_SIGRTMIN + 19, /* 52 */
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SVR4_SIGRTMIN + 20, /* 53 */
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SVR4_SIGRTMIN + 21, /* 54 */
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SVR4_SIGRTMIN + 22, /* 55 */
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SVR4_SIGRTMIN + 23, /* 56 */
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SVR4_SIGRTMIN + 24, /* 57 */
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SVR4_SIGRTMIN + 25, /* 58 */
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SVR4_SIGRTMIN + 26, /* 59 */
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SVR4_SIGRTMIN + 27, /* 60 */
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SVR4_SIGRTMIN + 28, /* 61 */
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SVR4_SIGRTMIN + 29, /* 62 */
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SVR4_SIGRTMIN + 30, /* 63 */
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};
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const int svr4_to_native_signo[SVR4_NSIG] = {
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0, /* 0 */
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SIGHUP, /* 1 */
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SIGINT, /* 2 */
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SIGQUIT, /* 3 */
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SIGILL, /* 4 */
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SIGTRAP, /* 5 */
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SIGABRT, /* 6 */
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SIGEMT, /* 7 */
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SIGFPE, /* 8 */
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SIGKILL, /* 9 */
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SIGBUS, /* 10 */
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SIGSEGV, /* 11 */
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SIGSYS, /* 12 */
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SIGPIPE, /* 13 */
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SIGALRM, /* 14 */
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SIGTERM, /* 15 */
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SIGUSR1, /* 16 */
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SIGUSR2, /* 17 */
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SIGCHLD, /* 18 */
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SIGPWR, /* 19 */
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SIGWINCH, /* 20 */
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SIGURG, /* 21 */
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SIGIO, /* 22 */
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SIGSTOP, /* 23 */
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SIGTSTP, /* 24 */
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SIGCONT, /* 25 */
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SIGTTIN, /* 26 */
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SIGTTOU, /* 27 */
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SIGVTALRM, /* 28 */
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SIGPROF, /* 29 */
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SIGXCPU, /* 30 */
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SIGXFSZ, /* 31 */
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SIGRTMIN + 0, /* 32 */
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SIGRTMIN + 1, /* 33 */
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SIGRTMIN + 2, /* 34 */
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SIGRTMIN + 3, /* 35 */
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SIGRTMIN + 4, /* 36 */
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SIGRTMIN + 5, /* 37 */
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SIGRTMIN + 6, /* 38 */
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SIGRTMIN + 7, /* 39 */
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SIGRTMIN + 8, /* 40 */
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SIGRTMIN + 9, /* 41 */
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SIGRTMIN + 10, /* 42 */
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SIGRTMIN + 11, /* 43 */
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SIGRTMIN + 12, /* 44 */
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SIGRTMIN + 13, /* 45 */
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SIGRTMIN + 14, /* 46 */
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SIGRTMIN + 15, /* 47 */
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SIGRTMIN + 16, /* 48 */
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SIGRTMIN + 17, /* 49 */
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SIGRTMIN + 18, /* 50 */
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SIGRTMIN + 19, /* 51 */
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SIGRTMIN + 20, /* 52 */
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SIGRTMIN + 21, /* 53 */
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SIGRTMIN + 22, /* 54 */
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SIGRTMIN + 23, /* 55 */
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SIGRTMIN + 24, /* 56 */
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SIGRTMIN + 25, /* 57 */
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SIGRTMIN + 26, /* 58 */
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SIGRTMIN + 27, /* 59 */
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SIGRTMIN + 28, /* 60 */
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SIGRTMIN + 29, /* 61 */
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SIGRTMIN + 30, /* 62 */
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0, /* 63 */
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};
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#endif
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static inline void
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svr4_32_sigfillset(s)
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svr4_32_sigset_t *s;
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{
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int i;
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svr4_sigemptyset(s);
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for (i = 1; i < SVR4_NSIG; i++)
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if (svr4_to_native_signo[i] != 0)
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svr4_sigaddset(s, i);
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}
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void
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svr4_32_to_native_sigset(sss, bss)
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const svr4_32_sigset_t *sss;
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sigset_t *bss;
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{
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int i, newsig;
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sigemptyset(bss);
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for (i = 1; i < SVR4_NSIG; i++) {
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if (svr4_sigismember(sss, i)) {
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newsig = svr4_to_native_signo[i];
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if (newsig)
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sigaddset(bss, newsig);
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}
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}
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}
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void
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native_to_svr4_32_sigset(bss, sss)
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const sigset_t *bss;
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svr4_32_sigset_t *sss;
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{
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int i, newsig;
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svr4_sigemptyset(sss);
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for (i = 1; i < NSIG; i++) {
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if (sigismember(bss, i)) {
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newsig = native_to_svr4_signo[i];
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if (newsig)
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svr4_sigaddset(sss, newsig);
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}
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}
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}
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/*
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* XXX: Only a subset of the flags is currently implemented.
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*/
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void
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svr4_32_to_native_sigaction(ssa, bsa)
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const struct svr4_32_sigaction *ssa;
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struct sigaction *bsa;
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{
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bsa->sa_handler = NETBSD32PTR64(ssa->svr4_32_sa_handler);
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svr4_32_to_native_sigset(&ssa->svr4_32_sa_mask, &bsa->sa_mask);
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bsa->sa_flags = 0;
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if ((ssa->svr4_32_sa_flags & SVR4_SA_ONSTACK) != 0)
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bsa->sa_flags |= SA_ONSTACK;
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if ((ssa->svr4_32_sa_flags & SVR4_SA_RESETHAND) != 0)
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bsa->sa_flags |= SA_RESETHAND;
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if ((ssa->svr4_32_sa_flags & SVR4_SA_RESTART) != 0)
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bsa->sa_flags |= SA_RESTART;
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if ((ssa->svr4_32_sa_flags & SVR4_SA_SIGINFO) != 0) {
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DPRINTF(("svr4_to_native_sigaction: SA_SIGINFO ignored\n"));
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}
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if ((ssa->svr4_32_sa_flags & SVR4_SA_NODEFER) != 0)
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bsa->sa_flags |= SA_NODEFER;
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if ((ssa->svr4_32_sa_flags & SVR4_SA_NOCLDWAIT) != 0)
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bsa->sa_flags |= SA_NOCLDWAIT;
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if ((ssa->svr4_32_sa_flags & SVR4_SA_NOCLDSTOP) != 0)
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bsa->sa_flags |= SA_NOCLDSTOP;
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if ((ssa->svr4_32_sa_flags & ~SVR4_SA_ALLBITS) != 0) {
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DPRINTF(("svr4_32_to_native_sigaction: extra bits %x ignored\n",
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ssa->svr4_32_sa_flags & ~SVR4_SA_ALLBITS));
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}
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}
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void
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native_to_svr4_32_sigaction(bsa, ssa)
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const struct sigaction *bsa;
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struct svr4_32_sigaction *ssa;
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{
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NETBSD32PTR32(ssa->svr4_32_sa_handler, bsa->sa_handler);
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native_to_svr4_32_sigset(&bsa->sa_mask, &ssa->svr4_32_sa_mask);
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ssa->svr4_32_sa_flags = 0;
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if ((bsa->sa_flags & SA_ONSTACK) != 0)
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ssa->svr4_32_sa_flags |= SVR4_SA_ONSTACK;
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if ((bsa->sa_flags & SA_RESETHAND) != 0)
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ssa->svr4_32_sa_flags |= SVR4_SA_RESETHAND;
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if ((bsa->sa_flags & SA_RESTART) != 0)
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ssa->svr4_32_sa_flags |= SVR4_SA_RESTART;
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if ((bsa->sa_flags & SA_NODEFER) != 0)
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ssa->svr4_32_sa_flags |= SVR4_SA_NODEFER;
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if ((bsa->sa_flags & SA_NOCLDSTOP) != 0)
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ssa->svr4_32_sa_flags |= SVR4_SA_NOCLDSTOP;
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}
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int
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svr4_32_sys_sigaction(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct svr4_32_sys_sigaction_args /* {
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syscallarg(int) signum;
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syscallarg(const struct svr4_32_sigaction *) nsa;
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syscallarg(struct svr4_32_sigaction *) osa;
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} */ *uap = v;
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struct svr4_32_sigaction nssa, ossa;
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struct sigaction nbsa, obsa;
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int error;
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if (SCARG_P32(uap, nsa)) {
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error = copyin(SCARG_P32(uap, nsa),
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&nssa, sizeof(nssa));
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if (error)
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return (error);
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svr4_32_to_native_sigaction(&nssa, &nbsa);
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}
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error = sigaction1(l,
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svr4_to_native_signo[SVR4_SIGNO(SCARG(uap, signum))],
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SCARG_P32(uap, nsa) ? &nbsa : 0, SCARG_P32(uap, osa) ? &obsa : 0,
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NULL, 0);
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if (error)
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return (error);
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if (SCARG_P32(uap, osa)) {
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native_to_svr4_32_sigaction(&obsa, &ossa);
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error = copyout(&ossa, SCARG_P32(uap, osa),
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sizeof(ossa));
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if (error)
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return (error);
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}
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return (0);
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}
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int
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svr4_32_sys_sigaltstack(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct svr4_32_sys_sigaltstack_args /* {
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syscallarg(const struct svr4_32_sigaltstack_tp) nss;
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syscallarg(struct svr4_32_sigaltstack_tp) oss;
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} */ *uap = v;
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compat_sigaltstack(uap, svr4_32_sigaltstack,
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SVR4_SS_ONSTACK, SVR4_SS_DISABLE);
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}
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/*
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* Stolen from the ibcs2 one
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*/
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int
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svr4_32_sys_signal(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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{
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struct svr4_32_sys_signal_args /* {
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syscallarg(int) signum;
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syscallarg(svr4_32_sig_t) handler;
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} */ *uap = v;
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struct proc *p = l->l_proc;
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int signum = svr4_to_native_signo[SVR4_SIGNO(SCARG(uap, signum))];
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struct sigaction nbsa, obsa;
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sigset_t ss;
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int error;
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if (signum <= 0 || signum >= SVR4_NSIG)
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return (EINVAL);
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switch (SVR4_SIGCALL(SCARG(uap, signum))) {
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case SVR4_SIGDEFER_MASK:
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if (SCARG(uap, handler) == SVR4_SIG_HOLD)
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goto sighold;
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/* FALLTHROUGH */
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case SVR4_SIGNAL_MASK:
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nbsa.sa_handler = (sig_t)SCARG(uap, handler);
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sigemptyset(&nbsa.sa_mask);
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nbsa.sa_flags = 0;
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error = sigaction1(l, signum, &nbsa, &obsa, NULL, 0);
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if (error)
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return (error);
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*retval = (u_int)(u_long)obsa.sa_handler;
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return (0);
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case SVR4_SIGHOLD_MASK:
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sighold:
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sigemptyset(&ss);
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sigaddset(&ss, signum);
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mutex_enter(&p->p_smutex);
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error = sigprocmask1(l, SIG_BLOCK, &ss, 0);
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mutex_exit(&p->p_smutex);
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return error;
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case SVR4_SIGRELSE_MASK:
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sigemptyset(&ss);
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sigaddset(&ss, signum);
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mutex_enter(&p->p_smutex);
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error = sigprocmask1(l, SIG_UNBLOCK, &ss, 0);
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mutex_exit(&p->p_smutex);
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return error;
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case SVR4_SIGIGNORE_MASK:
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nbsa.sa_handler = SIG_IGN;
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sigemptyset(&nbsa.sa_mask);
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nbsa.sa_flags = 0;
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return (sigaction1(l, signum, &nbsa, 0, NULL, 0));
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case SVR4_SIGPAUSE_MASK:
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mutex_enter(&p->p_smutex);
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ss = l->l_sigmask;
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mutex_exit(&p->p_smutex);
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sigdelset(&ss, signum);
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return (sigsuspend1(l, &ss));
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default:
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return (ENOSYS);
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}
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}
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int
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svr4_32_sys_sigprocmask(l, v, retval)
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struct lwp *l;
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void *v;
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register_t *retval;
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|
{
|
|
struct svr4_32_sys_sigprocmask_args /* {
|
|
syscallarg(int) how;
|
|
syscallarg(const svr4_32_sigset_t *) set;
|
|
syscallarg(svr4_32_sigset_t *) oset;
|
|
} */ *uap = v;
|
|
struct proc *p = l->l_proc;
|
|
svr4_32_sigset_t nsss, osss;
|
|
sigset_t nbss, obss;
|
|
int how;
|
|
int error;
|
|
|
|
/*
|
|
* Initialize how to 0 to avoid a compiler warning. Note that
|
|
* this is safe because of the check in the default: case.
|
|
*/
|
|
how = 0;
|
|
|
|
switch (SCARG(uap, how)) {
|
|
case SVR4_SIG_BLOCK:
|
|
how = SIG_BLOCK;
|
|
break;
|
|
case SVR4_SIG_UNBLOCK:
|
|
how = SIG_UNBLOCK;
|
|
break;
|
|
case SVR4_SIG_SETMASK:
|
|
how = SIG_SETMASK;
|
|
break;
|
|
default:
|
|
if (SCARG_P32(uap, set))
|
|
return EINVAL;
|
|
break;
|
|
}
|
|
|
|
if (SCARG_P32(uap, set)) {
|
|
error = copyin(SCARG_P32(uap, set),
|
|
&nsss, sizeof(nsss));
|
|
if (error)
|
|
return error;
|
|
svr4_32_to_native_sigset(&nsss, &nbss);
|
|
}
|
|
mutex_enter(&p->p_smutex);
|
|
error = sigprocmask1(l, how,
|
|
SCARG_P32(uap, set) ? &nbss : NULL, SCARG_P32(uap, oset) ? &obss : NULL);
|
|
mutex_exit(&p->p_smutex);
|
|
if (error)
|
|
return error;
|
|
if (SCARG_P32(uap, oset)) {
|
|
native_to_svr4_32_sigset(&obss, &osss);
|
|
error = copyout(&osss, SCARG_P32(uap, oset),
|
|
sizeof(osss));
|
|
if (error)
|
|
return error;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
svr4_32_sys_sigpending(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct svr4_32_sys_sigpending_args /* {
|
|
syscallarg(int) what;
|
|
syscallarg(svr4_sigset_t *) set;
|
|
} */ *uap = v;
|
|
sigset_t bss;
|
|
svr4_32_sigset_t sss;
|
|
|
|
switch (SCARG(uap, what)) {
|
|
case 1: /* sigpending */
|
|
sigpending1(l, &bss);
|
|
native_to_svr4_32_sigset(&bss, &sss);
|
|
break;
|
|
|
|
case 2: /* sigfillset */
|
|
svr4_32_sigfillset(&sss);
|
|
break;
|
|
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
return (copyout(&sss, SCARG_P32(uap, set), sizeof(sss)));
|
|
}
|
|
|
|
int
|
|
svr4_32_sys_sigsuspend(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct svr4_32_sys_sigsuspend_args /* {
|
|
syscallarg(const svr4_32_sigset_t *) set;
|
|
} */ *uap = v;
|
|
svr4_32_sigset_t sss;
|
|
sigset_t bss;
|
|
int error;
|
|
|
|
if (SCARG_P32(uap, set)) {
|
|
error = copyin(SCARG_P32(uap, set), &sss, sizeof(sss));
|
|
if (error)
|
|
return (error);
|
|
svr4_32_to_native_sigset(&sss, &bss);
|
|
}
|
|
|
|
return (sigsuspend1(l, SCARG_P32(uap, set) ? &bss : 0));
|
|
}
|
|
|
|
int
|
|
svr4_32_sys_pause(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
|
|
return (sigsuspend1(l, 0));
|
|
}
|
|
|
|
int
|
|
svr4_32_sys_kill(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct svr4_32_sys_kill_args /* {
|
|
syscallarg(int) pid;
|
|
syscallarg(int) signum;
|
|
} */ *uap = v;
|
|
struct sys_kill_args ka;
|
|
|
|
SCARG(&ka, pid) = SCARG(uap, pid);
|
|
SCARG(&ka, signum) = svr4_to_native_signo[SVR4_SIGNO(SCARG(uap, signum))];
|
|
return sys_kill(l, &ka, retval);
|
|
}
|
|
|
|
void
|
|
svr4_32_getcontext(l, uc, mask)
|
|
struct lwp *l;
|
|
struct svr4_32_ucontext *uc;
|
|
const sigset_t *mask;
|
|
{
|
|
void *sp;
|
|
struct svr4_32_sigaltstack *ss = &uc->uc_stack;
|
|
|
|
memset(uc, 0, sizeof(*uc));
|
|
|
|
/* get machine context */
|
|
sp = svr4_32_getmcontext(l, &uc->uc_mcontext, &uc->uc_flags);
|
|
|
|
/* get link */
|
|
NETBSD32PTR32(uc->uc_link, l->l_ctxlink);
|
|
|
|
/* get stack state. XXX: solaris appears to do this */
|
|
#if 0
|
|
svr4_32_to_native_sigaltstack(&uc->uc_stack, &p->p_sigacts->ps_sigstk);
|
|
#else
|
|
NETBSD32PTR32(ss->ss_sp, (void *)(((u_long) sp) & ~(16384 - 1)));
|
|
ss->ss_size = 16384;
|
|
ss->ss_flags = 0;
|
|
#endif
|
|
/* get signal mask */
|
|
mutex_enter(&l->l_proc->p_smutex);
|
|
native_to_svr4_32_sigset(mask, &uc->uc_sigmask);
|
|
mutex_exit(&l->l_proc->p_smutex);
|
|
|
|
uc->uc_flags |= SVR4_UC_STACK|SVR4_UC_SIGMASK;
|
|
}
|
|
|
|
|
|
int
|
|
svr4_32_setcontext(l, uc)
|
|
struct lwp *l;
|
|
struct svr4_32_ucontext *uc;
|
|
{
|
|
int error;
|
|
struct proc *p = l->l_proc;
|
|
|
|
/* set machine context */
|
|
if ((error = svr4_32_setmcontext(l, &uc->uc_mcontext, uc->uc_flags)) != 0)
|
|
return error;
|
|
|
|
/* set link */
|
|
l->l_ctxlink = NETBSD32PTR64(uc->uc_link);
|
|
|
|
mutex_enter(&p->p_smutex);
|
|
|
|
/* set signal stack */
|
|
if (uc->uc_flags & SVR4_UC_STACK) {
|
|
l->l_sigstk.ss_sp = NETBSD32PTR64(uc->uc_stack.ss_sp);
|
|
l->l_sigstk.ss_size = uc->uc_stack.ss_size;
|
|
l->l_sigstk.ss_flags =
|
|
(uc->uc_stack.ss_flags & SVR4_SS_ONSTACK ? SS_ONSTACK : 0) |
|
|
(uc->uc_stack.ss_flags & SVR4_SS_DISABLE ? SS_DISABLE : 0);
|
|
}
|
|
|
|
/* set signal mask */
|
|
if (uc->uc_flags & SVR4_UC_SIGMASK) {
|
|
sigset_t mask;
|
|
|
|
svr4_32_to_native_sigset(&uc->uc_sigmask, &mask);
|
|
(void)sigprocmask1(l, SIG_SETMASK, &mask, 0);
|
|
}
|
|
|
|
mutex_exit(&p->p_smutex);
|
|
|
|
return EJUSTRETURN;
|
|
}
|
|
|
|
int
|
|
svr4_32_sys_context(l, v, retval)
|
|
struct lwp *l;
|
|
void *v;
|
|
register_t *retval;
|
|
{
|
|
struct svr4_32_sys_context_args /* {
|
|
syscallarg(int) func;
|
|
syscallarg(struct svr4_32_ucontext *) uc;
|
|
} */ *uap = v;
|
|
struct svr4_32_ucontext uc;
|
|
int error;
|
|
*retval = 0;
|
|
|
|
switch (SCARG(uap, func)) {
|
|
case SVR4_GETCONTEXT:
|
|
DPRINTF(("getcontext(%p)\n", SCARG(uap, uc)));
|
|
svr4_32_getcontext(l, &uc, &l->l_sigmask);
|
|
return copyout(&uc, SCARG_P32(uap, uc), sizeof(uc));
|
|
|
|
case SVR4_SETCONTEXT:
|
|
DPRINTF(("setcontext(%p)\n", SCARG(uap, uc)));
|
|
if (!SCARG_P32(uap, uc))
|
|
exit1(l, W_EXITCODE(0, 0));
|
|
else if ((error = copyin(SCARG_P32(uap, uc),
|
|
&uc, sizeof(uc))) != 0)
|
|
return error;
|
|
else
|
|
return svr4_32_setcontext(l, &uc);
|
|
|
|
default:
|
|
DPRINTF(("context(%d, %p)\n", SCARG(uap, func),
|
|
SCARG(uap, uc)));
|
|
return ENOSYS;
|
|
}
|
|
return 0;
|
|
}
|