442 lines
11 KiB
C
442 lines
11 KiB
C
/* $NetBSD: hpux_sig.c,v 1.16 1997/04/01 19:59:02 scottr Exp $ */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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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 University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: hpux_sig.c 1.4 92/01/20$
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*
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* @(#)hpux_sig.c 8.2 (Berkeley) 9/23/93
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*/
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/*
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* Signal related HPUX compatibility routines
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/mount.h>
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#include <sys/proc.h>
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#include <sys/signalvar.h>
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#include <sys/syscallargs.h>
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#include <compat/hpux/hpux.h>
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#include <compat/hpux/hpux_sig.h>
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#include <compat/hpux/hpux_syscallargs.h>
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/* indexed by HPUX signal number - 1 */
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char hpuxtobsdsigmap[NSIG] = {
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/*01*/ SIGHUP, SIGINT, SIGQUIT, SIGILL, SIGTRAP, SIGIOT, SIGEMT, SIGFPE,
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/*09*/ SIGKILL, SIGBUS, SIGSEGV, SIGSYS, SIGPIPE, SIGALRM, SIGTERM, SIGUSR1,
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/*17*/ SIGUSR2, SIGCHLD, 0, SIGVTALRM,SIGPROF, SIGIO, SIGWINCH, SIGSTOP,
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/*25*/ SIGTSTP, SIGCONT,SIGTTIN, SIGTTOU, SIGURG, 0, 0, 0
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};
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/* indexed by BSD signal number - 1 */
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char bsdtohpuxsigmap[NSIG] = {
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/*01*/ 1, 2, 3, 4, 5, 6, 7, 8,
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/*09*/ 9, 10, 11, 12, 13, 14, 15, 29,
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/*17*/ 24, 25, 26, 18, 27, 28, 22, 0,
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/*25*/ 0, 20, 21, 23, 0, 16, 17, 0
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};
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/*
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* XXX: In addition to mapping the signal number we also have
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* to see if the "old" style signal mechinism is needed.
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* If so, we set the OUSIG flag. This is not really correct
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* as under HP-UX "old" style handling can be set on a per
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* signal basis and we are setting it for all signals in one
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* swell foop. I suspect we can get away with this since I
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* doubt any program of interest mixes the two semantics.
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*/
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int
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hpux_sys_sigvec(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct hpux_sys_sigvec_args *uap = v;
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struct sigvec vec;
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struct sigacts *ps = p->p_sigacts;
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struct sigvec *sv;
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int sig;
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int bit, error;
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sig = hpuxtobsdsig(SCARG(uap, signo));
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if (sig <= 0 || sig >= NSIG || sig == SIGKILL || sig == SIGSTOP)
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return (EINVAL);
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sv = &vec;
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if (SCARG(uap, osv)) {
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sv->sv_handler = ps->ps_sigact[sig];
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sv->sv_mask = ps->ps_catchmask[sig];
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bit = sigmask(sig);
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sv->sv_flags = 0;
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if ((ps->ps_sigonstack & bit) != 0)
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sv->sv_flags |= SV_ONSTACK;
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if ((ps->ps_sigintr & bit) != 0)
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sv->sv_flags |= SV_INTERRUPT;
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if ((ps->ps_sigreset & bit) != 0)
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sv->sv_flags |= HPUXSV_RESET;
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sv->sv_mask &= ~bit;
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error = copyout((caddr_t)sv, (caddr_t)SCARG(uap, osv),
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sizeof (vec));
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if (error)
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return (error);
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}
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if (SCARG(uap, nsv)) {
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error = copyin((caddr_t)SCARG(uap, nsv), (caddr_t)sv,
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sizeof (vec));
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if (error)
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return (error);
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if (sig == SIGCONT && sv->sv_handler == SIG_IGN)
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return (EINVAL);
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sv->sv_flags ^= SA_RESTART;
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setsigvec(p, sig, (struct sigaction *)sv);
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#if 0
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/* XXX -- SOUSIG no longer exists, do something here */
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if (sv->sv_flags & HPUXSV_RESET)
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p->p_flag |= SOUSIG; /* XXX */
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#endif
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}
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return (0);
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}
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int
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hpux_sys_sigblock(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct hpux_sys_sigblock_args *uap = v;
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(void) splhigh();
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*retval = bsdtohpuxmask(p->p_sigmask);
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p->p_sigmask |= hpuxtobsdmask(SCARG(uap, mask)) &~ sigcantmask;
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(void) spl0();
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return (0);
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}
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int
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hpux_sys_sigsetmask(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct hpux_sys_sigsetmask_args *uap = v;
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(void) splhigh();
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*retval = bsdtohpuxmask(p->p_sigmask);
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p->p_sigmask = hpuxtobsdmask(SCARG(uap, mask)) &~ sigcantmask;
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(void) spl0();
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return (0);
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}
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int
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hpux_sys_sigpause(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct hpux_sys_sigpause_args *uap = v;
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SCARG(uap, mask) = hpuxtobsdmask(SCARG(uap, mask));
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return (sys_sigsuspend(p, uap, retval));
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}
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/* not totally correct, but close enuf' */
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int
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hpux_sys_kill(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct hpux_sys_kill_args *uap = v;
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if (SCARG(uap, signo)) {
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SCARG(uap, signo) = hpuxtobsdsig(SCARG(uap, signo));
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if (SCARG(uap, signo) == 0)
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SCARG(uap, signo) = NSIG;
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}
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return (sys_kill(p, uap, retval));
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}
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/*
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* The following (sigprocmask, sigpending, sigsuspend, sigaction are
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* POSIX calls. Under BSD, the library routine dereferences the sigset_t
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* pointers before traping. Not so under HP-UX.
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*/
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/*
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* Manipulate signal mask.
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* Note that we receive new mask, not pointer,
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* and return old mask as return value;
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* the library stub does the rest.
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*/
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int
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hpux_sys_sigprocmask(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct hpux_sys_sigprocmask_args *uap = v;
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int mask, error = 0;
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hpux_sigset_t sigset;
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/*
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* Copy out old mask first to ensure no errors.
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* (proc sigmask should not be changed if call fails for any reason)
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*/
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if (SCARG(uap, oset)) {
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bzero((caddr_t)&sigset, sizeof(sigset));
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sigset.sigset[0] = bsdtohpuxmask(p->p_sigmask);
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if (copyout((caddr_t)&sigset, (caddr_t)SCARG(uap, oset),
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sizeof(sigset)))
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return (EFAULT);
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}
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if (SCARG(uap, set)) {
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if (copyin((caddr_t)SCARG(uap, set), (caddr_t)&sigset,
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sizeof(sigset)))
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return (EFAULT);
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mask = hpuxtobsdmask(sigset.sigset[0]);
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(void) splhigh();
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switch (SCARG(uap, how)) {
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case HPUXSIG_BLOCK:
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p->p_sigmask |= mask &~ sigcantmask;
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break;
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case HPUXSIG_UNBLOCK:
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p->p_sigmask &= ~mask;
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break;
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case HPUXSIG_SETMASK:
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p->p_sigmask = mask &~ sigcantmask;
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break;
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default:
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error = EINVAL;
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break;
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}
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(void) spl0();
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}
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return (error);
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}
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int
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hpux_sys_sigpending(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct hpux_sys_sigpending_args *uap = v;
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hpux_sigset_t sigset;
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sigset.sigset[0] = bsdtohpuxmask(p->p_siglist);
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return (copyout((caddr_t)&sigset, (caddr_t)SCARG(uap, set),
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sizeof(sigset)));
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}
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int
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hpux_sys_sigsuspend(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct hpux_sys_sigsuspend_args *uap = v;
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struct sigacts *ps = p->p_sigacts;
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hpux_sigset_t sigset;
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int mask;
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if (copyin((caddr_t)SCARG(uap, set), (caddr_t)&sigset, sizeof(sigset)))
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return (EFAULT);
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mask = hpuxtobsdmask(sigset.sigset[0]);
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ps->ps_oldmask = p->p_sigmask;
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ps->ps_flags |= SAS_OLDMASK;
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p->p_sigmask = mask &~ sigcantmask;
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(void) tsleep((caddr_t)ps, PPAUSE | PCATCH, "pause", 0);
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/* always return EINTR rather than ERESTART... */
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return (EINTR);
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}
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int
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hpux_sys_sigaction(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct hpux_sys_sigaction_args *uap = v;
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struct hpux_sigaction action;
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struct sigacts *ps = p->p_sigacts;
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struct hpux_sigaction *sa;
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int sig;
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int bit;
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sig = hpuxtobsdsig(SCARG(uap, signo));
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if (sig <= 0 || sig >= NSIG || sig == SIGKILL || sig == SIGSTOP)
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return (EINVAL);
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sa = &action;
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if (SCARG(uap, osa)) {
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sa->sa_handler = ps->ps_sigact[sig];
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bzero((caddr_t)&sa->sa_mask, sizeof(sa->sa_mask));
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sa->sa_mask.sigset[0] = bsdtohpuxmask(ps->ps_catchmask[sig]);
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bit = sigmask(sig);
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sa->sa_flags = 0;
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if ((ps->ps_sigonstack & bit) != 0)
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sa->sa_flags |= HPUXSA_ONSTACK;
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if ((ps->ps_sigreset & bit) != 0)
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sa->sa_flags |= HPUXSA_RESETHAND;
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if (p->p_flag & P_NOCLDSTOP)
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sa->sa_flags |= HPUXSA_NOCLDSTOP;
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if (copyout((caddr_t)sa, (caddr_t)SCARG(uap, osa),
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sizeof (action)))
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return (EFAULT);
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}
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if (SCARG(uap, nsa)) {
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struct sigaction act;
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if (copyin((caddr_t)SCARG(uap, nsa), (caddr_t)sa,
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sizeof (action)))
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return (EFAULT);
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if (sig == SIGCONT && sa->sa_handler == SIG_IGN)
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return (EINVAL);
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/*
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* Create a sigaction struct for setsigvec
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*/
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act.sa_handler = sa->sa_handler;
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act.sa_mask = hpuxtobsdmask(sa->sa_mask.sigset[0]);
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act.sa_flags = SA_RESTART;
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if (sa->sa_flags & HPUXSA_ONSTACK)
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act.sa_flags |= SA_ONSTACK;
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if (sa->sa_flags & HPUXSA_NOCLDSTOP)
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act.sa_flags |= SA_NOCLDSTOP;
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setsigvec(p, sig, &act);
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#if 0
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/* XXX -- SOUSIG no longer exists, do something here */
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if (sa->sa_flags & HPUXSA_RESETHAND)
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p->p_flag |= SOUSIG; /* XXX */
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#endif
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}
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return (0);
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}
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int
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hpux_sys_ssig_6x(p, v, retval)
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struct proc *p;
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void *v;
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register_t *retval;
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{
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struct hpux_sys_ssig_6x_args /* {
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syscallarg(int) signo;
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syscallarg(sig_t) fun;
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} */ *uap = v;
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int a;
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struct sigaction vec;
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struct sigaction *sa = &vec;
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a = hpuxtobsdsig(SCARG(uap, signo));
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sa->sa_handler = SCARG(uap, fun);
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/*
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* Kill processes trying to use job control facilities
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* (this'll help us find any vestiges of the old stuff).
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*/
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if ((a &~ 0377) ||
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(sa->sa_handler != SIG_DFL && sa->sa_handler != SIG_IGN &&
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((int)sa->sa_handler) & 1)) {
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psignal(p, SIGSYS);
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return (0);
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}
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if (a <= 0 || a >= NSIG || a == SIGKILL || a == SIGSTOP ||
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(a == SIGCONT && sa->sa_handler == SIG_IGN))
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return (EINVAL);
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sa->sa_mask = 0;
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sa->sa_flags = 0;
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*retval = (int)p->p_sigacts->ps_sigact[a];
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setsigvec(p, a, sa);
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#if 0
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p->p_flag |= SOUSIG; /* mark as simulating old stuff */
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#endif
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return (0);
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}
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/* signal numbers: convert from HPUX to BSD */
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int
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hpuxtobsdsig(sig)
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int sig;
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{
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if (--sig < 0 || sig >= NSIG)
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return(0);
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return((int)hpuxtobsdsigmap[sig]);
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}
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/* signal numbers: convert from BSD to HPUX */
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int
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bsdtohpuxsig(sig)
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int sig;
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{
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if (--sig < 0 || sig >= NSIG)
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return(0);
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return((int)bsdtohpuxsigmap[sig]);
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}
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/* signal masks: convert from HPUX to BSD (not pretty or fast) */
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int
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hpuxtobsdmask(mask)
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int mask;
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{
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int nmask, sig, nsig;
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if (mask == 0 || mask == -1)
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return(mask);
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nmask = 0;
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for (sig = 1; sig < NSIG; sig++)
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if ((mask & sigmask(sig)) && (nsig = hpuxtobsdsig(sig)))
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nmask |= sigmask(nsig);
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return(nmask);
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}
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int
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bsdtohpuxmask(mask)
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int mask;
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{
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int nmask, sig, nsig;
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if (mask == 0 || mask == -1)
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return(mask);
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nmask = 0;
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for (sig = 1; sig < NSIG; sig++)
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if ((mask & sigmask(sig)) && (nsig = bsdtohpuxsig(sig)))
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nmask |= sigmask(nsig);
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return(nmask);
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}
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