4.4BSD/usr/src/sys/hp/hpux/hpux_sig.c
/*
* 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 8.1 (Berkeley) 6/10/93
*/
/*
* Signal related HPUX compatibility routines
*/
#ifdef HPUXCOMPAT
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/proc.h>
#include <sys/signalvar.h>
#include <hp/hpux/hpux.h>
/* indexed by HPUX signal number - 1 */
char hpuxtobsdsigmap[NSIG] = {
/*01*/ SIGHUP, SIGINT, SIGQUIT, SIGILL, SIGTRAP, SIGIOT, SIGEMT, SIGFPE,
/*09*/ SIGKILL, SIGBUS, SIGSEGV, SIGSYS, SIGPIPE, SIGALRM, SIGTERM, SIGUSR1,
/*17*/ SIGUSR2, SIGCHLD, 0, SIGVTALRM,SIGPROF, SIGIO, SIGWINCH, SIGSTOP,
/*25*/ SIGTSTP, SIGCONT,SIGTTIN, SIGTTOU, SIGURG, 0, 0, 0
};
/* indexed by BSD signal number - 1 */
char bsdtohpuxsigmap[NSIG] = {
/*01*/ 1, 2, 3, 4, 5, 6, 7, 8,
/*09*/ 9, 10, 11, 12, 13, 14, 15, 29,
/*17*/ 24, 25, 26, 18, 27, 28, 22, 0,
/*25*/ 0, 20, 21, 23, 0, 16, 17, 0
};
/*
* 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.
*/
struct hpuxsigvec_args {
int signo;
struct sigvec *nsv;
struct sigvec *osv;
};
hpuxsigvec(p, uap, retval)
struct proc *p;
register struct hpuxsigvec_args *uap;
int *retval;
{
struct sigvec vec;
register struct sigacts *ps = p->p_sigacts;
register struct sigvec *sv;
register int sig;
int bit, error;
sig = hpuxtobsdsig(uap->signo);
if (sig <= 0 || sig >= NSIG || sig == SIGKILL || sig == SIGSTOP)
return (EINVAL);
sv = &vec;
if (uap->osv) {
sv->sv_handler = ps->ps_sigact[sig];
sv->sv_mask = ps->ps_catchmask[sig];
bit = sigmask(sig);
sv->sv_flags = 0;
if ((ps->ps_sigonstack & bit) != 0)
sv->sv_flags |= SV_ONSTACK;
if ((ps->ps_sigintr & bit) != 0)
sv->sv_flags |= SV_INTERRUPT;
#if 0
/* XXX -- SOUSIG no longer exists, do something here */
if (p->p_flag & SOUSIG)
sv->sv_flags |= HPUXSV_RESET; /* XXX */
#endif
error = copyout((caddr_t)sv, (caddr_t)uap->osv, sizeof (vec));
if (error)
return (error);
}
if (uap->nsv) {
error = copyin((caddr_t)uap->nsv, (caddr_t)sv, sizeof (vec));
if (error)
return (error);
if (sig == SIGCONT && sv->sv_handler == SIG_IGN)
return (EINVAL);
sv->sv_flags ^= SA_RESTART;
setsigvec(p, sig, (struct sigaction *)sv);
#if 0
/* XXX -- SOUSIG no longer exists, do something here */
if (sv->sv_flags & HPUXSV_RESET)
p->p_flag |= SOUSIG; /* XXX */
#endif
}
return (0);
}
struct hpuxsigblock_args {
int mask;
};
hpuxsigblock(p, uap, retval)
register struct proc *p;
struct hpuxsigblock_args *uap;
int *retval;
{
(void) splhigh();
*retval = bsdtohpuxmask(p->p_sigmask);
p->p_sigmask |= hpuxtobsdmask(uap->mask) &~ sigcantmask;
(void) spl0();
return (0);
}
struct hpuxsigsetmask_args {
int mask;
};
hpuxsigsetmask(p, uap, retval)
struct proc *p;
struct hpuxsigsetmask_args *uap;
int *retval;
{
(void) splhigh();
*retval = bsdtohpuxmask(p->p_sigmask);
p->p_sigmask = hpuxtobsdmask(uap->mask) &~ sigcantmask;
(void) spl0();
return (0);
}
struct hpuxsigpause_args {
int mask;
};
hpuxsigpause(p, uap, retval)
struct proc *p;
struct hpuxsigpause_args *uap;
int *retval;
{
uap->mask = hpuxtobsdmask(uap->mask);
return (sigsuspend(p, uap, retval));
}
/* not totally correct, but close enuf' */
struct hpuxkill_args {
int pid;
int signo;
};
hpuxkill(p, uap, retval)
struct proc *p;
struct hpuxkill_args *uap;
int *retval;
{
if (uap->signo) {
uap->signo = hpuxtobsdsig(uap->signo);
if (uap->signo == 0)
uap->signo = NSIG;
}
return (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.
*/
struct hpuxsigprocmask_args {
int how;
hpuxsigset_t *set;
hpuxsigset_t *oset;
};
hpuxsigprocmask(p, uap, retval)
register struct proc *p;
struct hpuxsigprocmask_args *uap;
int *retval;
{
int mask, error = 0;
hpuxsigset_t sigset;
/*
* Copy out old mask first to ensure no errors.
* (proc sigmask should not be changed if call fails for any reason)
*/
if (uap->oset) {
bzero((caddr_t)&sigset, sizeof(sigset));
sigset.sigset[0] = bsdtohpuxmask(p->p_sigmask);
if (copyout((caddr_t)&sigset, (caddr_t)uap->oset, sizeof(sigset)))
return (EFAULT);
}
if (uap->set) {
if (copyin((caddr_t)uap->set, (caddr_t)&sigset, sizeof(sigset)))
return (EFAULT);
mask = hpuxtobsdmask(sigset.sigset[0]);
(void) splhigh();
switch (uap->how) {
case HPUXSIG_BLOCK:
p->p_sigmask |= mask &~ sigcantmask;
break;
case HPUXSIG_UNBLOCK:
p->p_sigmask &= ~mask;
break;
case HPUXSIG_SETMASK:
p->p_sigmask = mask &~ sigcantmask;
break;
default:
error = EINVAL;
break;
}
(void) spl0();
}
return (error);
}
struct hpuxsigpending_args {
hpuxsigset_t *set;
};
hpuxsigpending(p, uap, retval)
register struct proc *p;
struct hpuxsigpending_args *uap;
int *retval;
{
hpuxsigset_t sigset;
sigset.sigset[0] = bsdtohpuxmask(p->p_sig);
return (copyout((caddr_t)&sigset, (caddr_t)uap->set, sizeof(sigset)));
}
struct hpuxsigsuspend_args {
hpuxsigset_t *set;
};
hpuxsigsuspend(p, uap, retval)
register struct proc *p;
struct hpuxsigsuspend_args *uap;
int *retval;
{
register struct sigacts *ps = p->p_sigacts;
hpuxsigset_t sigset;
int mask;
if (copyin((caddr_t)uap->set, (caddr_t)&sigset, sizeof(sigset)))
return (EFAULT);
mask = hpuxtobsdmask(sigset.sigset[0]);
ps->ps_oldmask = p->p_sigmask;
ps->ps_flags |= SAS_OLDMASK;
p->p_sigmask = mask &~ sigcantmask;
(void) tsleep((caddr_t)ps, PPAUSE | PCATCH, "pause", 0);
/* always return EINTR rather than ERESTART... */
return (EINTR);
}
struct hpuxsigaction_args {
int signo;
struct hpuxsigaction *nsa;
struct hpuxsigaction *osa;
};
hpuxsigaction(p, uap, retval)
struct proc *p;
register struct hpuxsigaction_args *uap;
int *retval;
{
struct hpuxsigaction action;
register struct sigacts *ps = p->p_sigacts;
register struct hpuxsigaction *sa;
register int sig;
int bit;
sig = hpuxtobsdsig(uap->signo);
if (sig <= 0 || sig >= NSIG || sig == SIGKILL || sig == SIGSTOP)
return (EINVAL);
sa = &action;
if (uap->osa) {
sa->sa_handler = ps->ps_sigact[sig];
bzero((caddr_t)&sa->sa_mask, sizeof(sa->sa_mask));
sa->sa_mask.sigset[0] = bsdtohpuxmask(ps->ps_catchmask[sig]);
bit = sigmask(sig);
sa->sa_flags = 0;
if ((ps->ps_sigonstack & bit) != 0)
sa->sa_flags |= HPUXSA_ONSTACK;
#if 0
/* XXX -- SOUSIG no longer exists, do something here */
if (p->p_flag & SOUSIG)
sa->sa_flags |= HPUXSA_RESETHAND; /* XXX */
#endif
if (p->p_flag & SNOCLDSTOP)
sa->sa_flags |= HPUXSA_NOCLDSTOP;
if (copyout((caddr_t)sa, (caddr_t)uap->osa, sizeof (action)))
return (EFAULT);
}
if (uap->nsa) {
struct sigaction act;
if (copyin((caddr_t)uap->nsa, (caddr_t)sa, sizeof (action)))
return (EFAULT);
if (sig == SIGCONT && sa->sa_handler == SIG_IGN)
return (EINVAL);
/*
* Create a sigaction struct for setsigvec
*/
act.sa_handler = sa->sa_handler;
act.sa_mask = hpuxtobsdmask(sa->sa_mask.sigset[0]);
act.sa_flags == SA_RESTART;
if (sa->sa_flags & HPUXSA_ONSTACK)
act.sa_flags |= SA_ONSTACK;
if (sa->sa_flags & HPUXSA_NOCLDSTOP)
act.sa_flags |= SA_NOCLDSTOP;
setsigvec(p, sig, &act);
#if 0
/* XXX -- SOUSIG no longer exists, do something here */
if (sa->sa_flags & HPUXSA_RESETHAND)
p->p_flag |= SOUSIG; /* XXX */
#endif
}
return (0);
}
#ifdef COMPAT_OHPUX
struct ohpuxssig_args {
int signo;
sig_t fun;
};
ohpuxssig(p, uap, retval)
struct proc *p;
struct ohpuxssig_args *uap;
int *retval;
{
register int a;
struct sigaction vec;
register struct sigaction *sa = &vec;
a = hpuxtobsdsig(uap->signo);
sa->sa_handler = 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);
sa->sa_mask = 0;
sa->sa_flags = 0;
*retval = (int)p->p_sigacts->ps_sigact[a];
setsigvec(p, a, sa);
#if 0
p->p_flag |= SOUSIG; /* mark as simulating old stuff */
#endif
return (0);
}
#endif
/* signal numbers: convert from HPUX to BSD */
hpuxtobsdsig(sig)
register int sig;
{
if (--sig < 0 || sig >= NSIG)
return(0);
return((int)hpuxtobsdsigmap[sig]);
}
/* signal numbers: convert from BSD to HPUX */
bsdtohpuxsig(sig)
register int sig;
{
if (--sig < 0 || sig >= NSIG)
return(0);
return((int)bsdtohpuxsigmap[sig]);
}
/* signal masks: convert from HPUX to BSD (not pretty or fast) */
hpuxtobsdmask(mask)
register int mask;
{
register int nmask, sig, nsig;
if (mask == 0 || mask == -1)
return(mask);
nmask = 0;
for (sig = 1; sig < NSIG; sig++)
if ((mask & sigmask(sig)) && (nsig = hpuxtobsdsig(sig)))
nmask |= sigmask(nsig);
return(nmask);
}
bsdtohpuxmask(mask)
register int mask;
{
register int nmask, sig, nsig;
if (mask == 0 || mask == -1)
return(mask);
nmask = 0;
for (sig = 1; sig < NSIG; sig++)
if ((mask & sigmask(sig)) && (nsig = bsdtohpuxsig(sig)))
nmask |= sigmask(nsig);
return(nmask);
}
#endif