NetBSD/sys/compat/hpux/hpux_sig.c

444 lines
11 KiB
C

/* $NetBSD: hpux_sig.c,v 1.23 2002/07/04 23:32:09 thorpej Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: Utah $Hdr: hpux_sig.c 1.4 92/01/20$
*
* @(#)hpux_sig.c 8.2 (Berkeley) 9/23/93
*/
/*
* Signal related HPUX compatibility routines
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: hpux_sig.c,v 1.23 2002/07/04 23:32:09 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/mount.h>
#include <sys/proc.h>
#include <sys/signalvar.h>
#include <sys/syscallargs.h>
#include <compat/hpux/hpux.h>
#include <compat/hpux/hpux_sig.h>
#include <compat/hpux/hpux_syscallargs.h>
extern const unsigned char native_to_hpux_signo[];
extern const unsigned char hpux_to_native_signo[];
/*
* XXX: In addition to mapping the signal number we also have
* to see if the "old" style signal mechinism is needed.
* If so, we set the OUSIG flag. This is not really correct
* as under HP-UX "old" style handling can be set on a per
* signal basis and we are setting it for all signals in one
* swell foop. I suspect we can get away with this since I
* doubt any program of interest mixes the two semantics.
*/
int
hpux_sys_sigvec(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct hpux_sys_sigvec_args *uap = v;
struct sigvec nsv, osv;
struct sigaction nsa, osa;
int sig, error;
/* XXX */
extern void compat_43_sigvec_to_sigaction
__P((const struct sigvec *, struct sigaction *));
extern void compat_43_sigaction_to_sigvec
__P((const struct sigaction *, struct sigvec *));
/*
* XXX We don't handle HPUXSV_RESET!
*/
sig = hpuxtobsdsig(SCARG(uap, signo));
if (sig <= 0 || sig >= NSIG || sig == SIGKILL || sig == SIGSTOP)
return (EINVAL);
if (SCARG(uap, nsv)) {
error = copyin(SCARG(uap, nsv), &nsv, sizeof(nsv));
if (error)
return (error);
compat_43_sigvec_to_sigaction(&nsv, &nsa);
}
error = sigaction1(p, sig,
SCARG(uap, nsv) ? &nsa : NULL,
SCARG(uap, osv) ? &osa : NULL,
NULL, 0);
if (error)
return (error);
if (SCARG(uap, osv)) {
compat_43_sigaction_to_sigvec(&osa, &osv);
error = copyout(&osv, SCARG(uap, osv), sizeof(osv));
if (error)
return (error);
}
return (0);
}
int
hpux_sys_sigblock(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct hpux_sys_sigblock_args *uap = v;
sigset_t nmask;
(void) splsched();
bsdtohpuxmask(&p->p_sigctx.ps_sigmask, (int *)retval);
hpuxtobsdmask(SCARG(uap, mask), &nmask);
sigplusset(&nmask, &p->p_sigctx.ps_sigmask);
sigminusset(&sigcantmask, &p->p_sigctx.ps_sigmask);
(void) spl0();
return (0);
}
int
hpux_sys_sigsetmask(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct hpux_sys_sigsetmask_args *uap = v;
(void) splsched();
bsdtohpuxmask(&p->p_sigctx.ps_sigmask, (int *)retval);
hpuxtobsdmask(SCARG(uap, mask), &p->p_sigctx.ps_sigmask);
sigminusset(&sigcantmask, &p->p_sigctx.ps_sigmask);
(void) spl0();
return (0);
}
int
hpux_sys_sigpause(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct hpux_sys_sigpause_args *uap = v;
sigset_t mask;
hpuxtobsdmask(SCARG(uap, mask), &mask);
return (sigsuspend1(p, &mask));
}
/* not totally correct, but close enuf' */
int
hpux_sys_kill(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct hpux_sys_kill_args *uap = v;
if (SCARG(uap, signo)) {
SCARG(uap, signo) = hpuxtobsdsig(SCARG(uap, signo));
if (SCARG(uap, signo) == 0)
SCARG(uap, signo) = NSIG;
}
return (sys_kill(p, uap, retval));
}
/*
* The following (sigprocmask, sigpending, sigsuspend, sigaction are
* POSIX calls. Under BSD, the library routine dereferences the sigset_t
* pointers before traping. Not so under HP-UX.
*/
/*
* Manipulate signal mask.
* Note that we receive new mask, not pointer,
* and return old mask as return value;
* the library stub does the rest.
*
* XXX We don't handle all HP-UX signals!
*/
int
hpux_sys_sigprocmask(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct hpux_sys_sigprocmask_args *uap = v;
int error = 0;
hpux_sigset_t sigset;
sigset_t mask;
/*
* Copy out old mask first to ensure no errors.
* (proc sigmask should not be changed if call fails for any reason)
*/
if (SCARG(uap, oset)) {
memset((caddr_t)&sigset, 0, sizeof(sigset));
bsdtohpuxmask(&p->p_sigctx.ps_sigmask, &sigset.sigset[0]);
error = copyout(&sigset, SCARG(uap, oset), sizeof(sigset));
if (error)
return (error);
}
if (SCARG(uap, set)) {
error = copyin(SCARG(uap, set), &sigset, sizeof(sigset));
if (error)
return (error);
hpuxtobsdmask(sigset.sigset[0], &mask);
(void) splsched();
switch (SCARG(uap, how)) {
case HPUXSIG_BLOCK:
sigplusset(&mask, &p->p_sigctx.ps_sigmask);
sigminusset(&sigcantmask, &p->p_sigctx.ps_sigmask);
break;
case HPUXSIG_UNBLOCK:
sigminusset(&mask, &p->p_sigctx.ps_sigmask);
break;
case HPUXSIG_SETMASK:
p->p_sigctx.ps_sigmask = mask;
sigminusset(&sigcantmask, &p->p_sigctx.ps_sigmask);
break;
default:
error = EINVAL;
break;
}
(void) spl0();
}
return (error);
}
int
hpux_sys_sigpending(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct hpux_sys_sigpending_args *uap = v;
hpux_sigset_t sigset;
bsdtohpuxmask(&p->p_sigctx.ps_siglist, &sigset.sigset[0]);
return (copyout(&sigset, SCARG(uap, set), sizeof(sigset)));
}
int
hpux_sys_sigsuspend(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct hpux_sys_sigsuspend_args *uap = v;
hpux_sigset_t sigset;
sigset_t mask;
int error;
error = copyin(SCARG(uap, set), &sigset, sizeof(sigset));
if (error)
return (error);
hpuxtobsdmask(sigset.sigset[0], &mask);
return (sigsuspend1(p, &mask));
}
int
hpux_sys_sigaction(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct hpux_sys_sigaction_args *uap = v;
struct hpux_sigaction action;
struct hpux_sigaction *sa;
struct sigaction *bsa;
int sig, error;
sig = hpuxtobsdsig(SCARG(uap, signo));
if (sig <= 0 || sig >= NSIG || sig == SIGKILL || sig == SIGSTOP)
return (EINVAL);
bsa = &SIGACTION(p, sig);
sa = &action;
if (SCARG(uap, osa)) {
sa->sa_handler = bsa->sa_handler;
memset((caddr_t)&sa->sa_mask, 0, sizeof(sa->sa_mask));
bsdtohpuxmask(&bsa->sa_mask, &sa->sa_mask.sigset[0]);
sa->sa_flags = 0;
if (bsa->sa_flags & SA_ONSTACK)
sa->sa_flags |= HPUXSA_ONSTACK;
if (bsa->sa_flags & SA_RESETHAND)
sa->sa_flags |= HPUXSA_RESETHAND;
if (bsa->sa_flags & SA_NOCLDSTOP)
sa->sa_flags |= HPUXSA_NOCLDSTOP;
error = copyout(sa, SCARG(uap, osa), sizeof (action));
if (error)
return (error);
}
if (SCARG(uap, nsa)) {
struct sigaction act;
error = copyin(SCARG(uap, nsa), sa, sizeof(action));
if (error)
return (error);
if (sig == SIGCONT && sa->sa_handler == SIG_IGN)
return (EINVAL);
act.sa_handler = sa->sa_handler;
hpuxtobsdmask(sa->sa_mask.sigset[0], &act.sa_mask);
act.sa_flags = SA_RESTART;
if (sa->sa_flags & HPUXSA_ONSTACK)
act.sa_flags |= SA_ONSTACK;
if (sa->sa_flags & HPUXSA_RESETHAND)
act.sa_flags |= SA_RESETHAND;
if (sa->sa_flags & HPUXSA_NOCLDSTOP)
act.sa_flags |= SA_NOCLDSTOP;
error = sigaction1(p, sig, &act, NULL, NULL, 0);
if (error)
return (error);
}
return (0);
}
int
hpux_sys_ssig_6x(p, v, retval)
struct proc *p;
void *v;
register_t *retval;
{
struct hpux_sys_ssig_6x_args /* {
syscallarg(int) signo;
syscallarg(sig_t) fun;
} */ *uap = v;
int a;
struct sigaction vec;
struct sigaction *sa = &vec;
memset(sa, 0, sizeof(*sa));
a = hpuxtobsdsig(SCARG(uap, signo));
sa->sa_handler = SCARG(uap, fun);
/*
* Kill processes trying to use job control facilities
* (this'll help us find any vestiges of the old stuff).
*/
if ((a &~ 0377) ||
(sa->sa_handler != SIG_DFL && sa->sa_handler != SIG_IGN &&
((int)sa->sa_handler) & 1)) {
psignal(p, SIGSYS);
return (0);
}
if (a <= 0 || a >= NSIG || a == SIGKILL || a == SIGSTOP ||
(a == SIGCONT && sa->sa_handler == SIG_IGN))
return (EINVAL);
sigemptyset(&sa->sa_mask);
sa->sa_flags = 0;
*retval = (register_t)SIGACTION(p, a).sa_handler;
sigaction1(p, a, sa, NULL, NULL, 0);
#if 0
p->p_flag |= SOUSIG; /* mark as simulating old stuff */
#endif
return (0);
}
/* signal numbers: convert from HPUX to BSD */
int
hpuxtobsdsig(sig)
int sig;
{
if (sig < 0 || sig >= NSIG)
return(0);
return hpux_to_native_signo[sig];
}
/* signal numbers: convert from BSD to HPUX */
int
bsdtohpuxsig(sig)
int sig;
{
if (sig < 0 || sig >= NSIG)
return(0);
return native_to_hpux_signo[sig];
}
/* signal masks: convert from HPUX to BSD (not pretty or fast) */
void
hpuxtobsdmask(hpuxmask, bsdmask)
int hpuxmask;
sigset_t *bsdmask;
{
int sig, nsig;
sigemptyset(bsdmask);
for (sig = 1; sig < NSIG; sig++) {
if ((hpuxmask & (1 << sig)) != 0 &&
(nsig = hpuxtobsdsig(sig)) != 0)
sigaddset(bsdmask, sig);
}
}
void
bsdtohpuxmask(bsdmask, hpuxmask)
const sigset_t *bsdmask;
int *hpuxmask;
{
int sig, nsig;
*hpuxmask = 0;
for (sig = 1; sig < NSIG; sig++) {
if (sigismember(bsdmask, sig) &&
(nsig = bsdtohpuxsig(sig)) != 0)
*hpuxmask |= (1 << sig);
}
}