File: [local] / sys / compat / linux / linux_signal.c (download)
Revision 1.1.1.1 (vendor branch), Tue Mar 4 16:09:03 2008 UTC (16 years, 4 months ago) by nbrk
Branch: OPENBSD_4_2_BASE, MAIN
CVS Tags: jornada-partial-support-wip, HEAD Changes since 1.1: +0 -0 lines
Import of OpenBSD 4.2 release kernel tree with initial code to support
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO
Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)
|
/* $OpenBSD: linux_signal.c,v 1.12 2003/02/25 09:10:27 tedu Exp $ */
/* $NetBSD: linux_signal.c,v 1.10 1996/04/04 23:51:36 christos Exp $ */
/*
* Copyright (c) 1995 Frank van der Linden
* All rights reserved.
*
* 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 for the NetBSD Project
* by Frank van der Linden
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*
* heavily from: svr4_signal.c,v 1.7 1995/01/09 01:04:21 christos Exp
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/namei.h>
#include <sys/proc.h>
#include <sys/filedesc.h>
#include <sys/ioctl.h>
#include <sys/mount.h>
#include <sys/kernel.h>
#include <sys/signal.h>
#include <sys/signalvar.h>
#include <sys/malloc.h>
#include <sys/syscallargs.h>
#include <compat/linux/linux_types.h>
#include <compat/linux/linux_signal.h>
#include <compat/linux/linux_syscallargs.h>
#include <compat/linux/linux_util.h>
#define sigemptyset(s) bzero((s), sizeof(*(s)))
#define sigismember(s, n) (*(s) & sigmask(n))
#define sigaddset(s, n) (*(s) |= sigmask(n))
/* Locally used defines (in bsd<->linux conversion functions): */
#define linux_sigmask(n) (1 << ((n) - 1))
#define linux_sigemptyset(s) bzero((s), sizeof(*(s)))
#define linux_sigismember(s, n) ((s)->sig[((n) - 1) / LINUX__NSIG_BPW] \
& (1 << ((n) - 1) % LINUX__NSIG_BPW))
#define linux_sigaddset(s, n) ((s)->sig[((n) - 1) / LINUX__NSIG_BPW] \
|= (1 << ((n) - 1) % LINUX__NSIG_BPW))
int bsd_to_linux_sig[NSIG] = {
0,
LINUX_SIGHUP,
LINUX_SIGINT,
LINUX_SIGQUIT,
LINUX_SIGILL,
LINUX_SIGTRAP,
LINUX_SIGABRT,
LINUX_NSIG, /* XXX Kludge to get RT signal #32 to work */
LINUX_SIGFPE,
LINUX_SIGKILL,
LINUX_SIGBUS,
LINUX_SIGSEGV,
LINUX_NSIG + 1, /* XXX Kludge to get RT signal #32 to work */
LINUX_SIGPIPE,
LINUX_SIGALRM,
LINUX_SIGTERM,
LINUX_SIGURG,
LINUX_SIGSTOP,
LINUX_SIGTSTP,
LINUX_SIGCONT,
LINUX_SIGCHLD,
LINUX_SIGTTIN,
LINUX_SIGTTOU,
LINUX_SIGIO,
LINUX_SIGXCPU,
LINUX_SIGXFSZ,
LINUX_SIGVTALRM,
LINUX_SIGPROF,
LINUX_SIGWINCH,
0, /* SIGINFO */
LINUX_SIGUSR1,
LINUX_SIGUSR2,
};
int linux_to_bsd_sig[LINUX__NSIG] = {
0,
SIGHUP,
SIGINT,
SIGQUIT,
SIGILL,
SIGTRAP,
SIGABRT,
SIGBUS,
SIGFPE,
SIGKILL,
SIGUSR1,
SIGSEGV,
SIGUSR2,
SIGPIPE,
SIGALRM,
SIGTERM,
0, /* SIGSTKFLT */
SIGCHLD,
SIGCONT,
SIGSTOP,
SIGTSTP,
SIGTTIN,
SIGTTOU,
SIGURG,
SIGXCPU,
SIGXFSZ,
SIGVTALRM,
SIGPROF,
SIGWINCH,
SIGIO,
0, /* SIGUNUSED */
0,
SIGEMT, /* XXX Gruesome hack for linuxthreads: */
SIGSYS, /* Map 1st 2 RT signals onto ones we handle. */
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
};
/*
* Convert between Linux and BSD signal sets.
*/
void
linux_old_to_bsd_sigset(lss, bss)
const linux_old_sigset_t *lss;
sigset_t *bss;
{
linux_old_extra_to_bsd_sigset(lss, (const unsigned long *) 0, bss);
}
void
bsd_to_linux_old_sigset(bss, lss)
const sigset_t *bss;
linux_old_sigset_t *lss;
{
bsd_to_linux_old_extra_sigset(bss, lss, (unsigned long *) 0);
}
void
linux_old_extra_to_bsd_sigset(lss, extra, bss)
const linux_old_sigset_t *lss;
const unsigned long *extra;
sigset_t *bss;
{
linux_sigset_t lsnew;
/* convert old sigset to new sigset */
linux_sigemptyset(&lsnew);
lsnew.sig[0] = *lss;
if (extra)
bcopy(extra, &lsnew.sig[1],
sizeof(linux_sigset_t) - sizeof(linux_old_sigset_t));
linux_to_bsd_sigset(&lsnew, bss);
}
void
bsd_to_linux_old_extra_sigset(bss, lss, extra)
const sigset_t *bss;
linux_old_sigset_t *lss;
unsigned long *extra;
{
linux_sigset_t lsnew;
bsd_to_linux_sigset(bss, &lsnew);
/* convert new sigset to old sigset */
*lss = lsnew.sig[0];
if (extra)
bcopy(&lsnew.sig[1], extra,
sizeof(linux_sigset_t) - sizeof(linux_old_sigset_t));
}
void
linux_to_bsd_sigset(lss, bss)
const linux_sigset_t *lss;
sigset_t *bss;
{
int i, newsig;
sigemptyset(bss);
for (i = 1; i < LINUX__NSIG; i++) {
if (linux_sigismember(lss, i)) {
newsig = linux_to_bsd_sig[i];
if (newsig)
sigaddset(bss, newsig);
}
}
}
void
bsd_to_linux_sigset(bss, lss)
const sigset_t *bss;
linux_sigset_t *lss;
{
int i, newsig;
linux_sigemptyset(lss);
for (i = 1; i < NSIG; i++) {
if (sigismember(bss, i)) {
newsig = bsd_to_linux_sig[i];
if (newsig)
linux_sigaddset(lss, newsig);
}
}
}
/*
* Convert between Linux and BSD sigaction structures. Linux has
* one extra field (sa_restorer) which we don't support.
*/
void
linux_old_to_bsd_sigaction(lsa, bsa)
struct linux_old_sigaction *lsa;
struct sigaction *bsa;
{
bsa->sa_handler = lsa->sa__handler;
linux_old_to_bsd_sigset(&lsa->sa_mask, &bsa->sa_mask);
bsa->sa_flags = 0;
if ((lsa->sa_flags & LINUX_SA_ONSTACK) != 0)
bsa->sa_flags |= SA_ONSTACK;
if ((lsa->sa_flags & LINUX_SA_RESTART) != 0)
bsa->sa_flags |= SA_RESTART;
if ((lsa->sa_flags & LINUX_SA_ONESHOT) != 0)
bsa->sa_flags |= SA_RESETHAND;
if ((lsa->sa_flags & LINUX_SA_NOCLDSTOP) != 0)
bsa->sa_flags |= SA_NOCLDSTOP;
if ((lsa->sa_flags & LINUX_SA_NOMASK) != 0)
bsa->sa_flags |= SA_NODEFER;
}
void
bsd_to_linux_old_sigaction(bsa, lsa)
struct sigaction *bsa;
struct linux_old_sigaction *lsa;
{
lsa->sa__handler = bsa->sa_handler;
bsd_to_linux_old_sigset(&bsa->sa_mask, &lsa->sa_mask);
lsa->sa_flags = 0;
if ((bsa->sa_flags & SA_NOCLDSTOP) != 0)
lsa->sa_flags |= LINUX_SA_NOCLDSTOP;
if ((bsa->sa_flags & SA_ONSTACK) != 0)
lsa->sa_flags |= LINUX_SA_ONSTACK;
if ((bsa->sa_flags & SA_RESTART) != 0)
lsa->sa_flags |= LINUX_SA_RESTART;
if ((bsa->sa_flags & SA_NODEFER) != 0)
lsa->sa_flags |= LINUX_SA_NOMASK;
if ((bsa->sa_flags & SA_RESETHAND) != 0)
lsa->sa_flags |= LINUX_SA_ONESHOT;
lsa->sa_restorer = NULL;
}
void
linux_to_bsd_sigaction(lsa, bsa)
struct linux_sigaction *lsa;
struct sigaction *bsa;
{
bsa->sa_handler = lsa->sa__handler;
linux_to_bsd_sigset(&lsa->sa_mask, &bsa->sa_mask);
bsa->sa_flags = 0;
if ((lsa->sa_flags & LINUX_SA_NOCLDSTOP) != 0)
bsa->sa_flags |= SA_NOCLDSTOP;
if ((lsa->sa_flags & LINUX_SA_ONSTACK) != 0)
bsa->sa_flags |= SA_ONSTACK;
if ((lsa->sa_flags & LINUX_SA_RESTART) != 0)
bsa->sa_flags |= SA_RESTART;
if ((lsa->sa_flags & LINUX_SA_ONESHOT) != 0)
bsa->sa_flags |= SA_RESETHAND;
if ((lsa->sa_flags & LINUX_SA_NOMASK) != 0)
bsa->sa_flags |= SA_NODEFER;
if ((lsa->sa_flags & LINUX_SA_SIGINFO) != 0)
bsa->sa_flags |= SA_SIGINFO;
}
void
bsd_to_linux_sigaction(bsa, lsa)
struct sigaction *bsa;
struct linux_sigaction *lsa;
{
/* Clear sa_flags and sa_restorer (if it exists) */
bzero(lsa, sizeof(struct linux_sigaction));
/* ...and fill in the mask and flags */
bsd_to_linux_sigset(&bsa->sa_mask, &lsa->sa_mask);
if ((bsa->sa_flags & SA_NOCLDSTOP) != 0)
lsa->sa_flags |= LINUX_SA_NOCLDSTOP;
if ((bsa->sa_flags & SA_ONSTACK) != 0)
lsa->sa_flags |= LINUX_SA_ONSTACK;
if ((bsa->sa_flags & SA_RESTART) != 0)
lsa->sa_flags |= LINUX_SA_RESTART;
if ((bsa->sa_flags & SA_NODEFER) != 0)
lsa->sa_flags |= LINUX_SA_NOMASK;
if ((bsa->sa_flags & SA_RESETHAND) != 0)
lsa->sa_flags |= LINUX_SA_ONESHOT;
if ((bsa->sa_flags & SA_SIGINFO) != 0)
lsa->sa_flags |= LINUX_SA_SIGINFO;
lsa->sa__handler = bsa->sa_handler;
}
int
linux_to_bsd_signal(int linuxsig, int *bsdsig)
{
if (linuxsig < 0 || linuxsig >= LINUX__NSIG)
return (EINVAL);
*bsdsig = linux_to_bsd_sig[linuxsig];
return (0);
}
int
bsd_to_linux_signal(int bsdsig, int *linuxsig)
{
if (bsdsig < 0 || bsdsig >= NSIG)
return (EINVAL);
*linuxsig = bsd_to_linux_sig[bsdsig];
return (0);
}
/*
* The Linux sigaction() system call. Do the usual conversions,
* and just call sigaction(). Some flags and values are silently
* ignored (see above).
*/
int
linux_sys_sigaction(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_sigaction_args /* {
syscallarg(int) signum;
syscallarg(struct linux_old_sigaction *) nsa;
syscallarg(struct linux_old_sigaction *) osa;
} */ *uap = v;
struct linux_old_sigaction *nlsa, *olsa, tmplsa;
struct sigaction *nbsa, *obsa, tmpbsa;
struct sys_sigaction_args sa;
caddr_t sg;
int error;
if (SCARG(uap, signum) < 0 || SCARG(uap, signum) >= LINUX__NSIG)
return (EINVAL);
sg = stackgap_init(p->p_emul);
nlsa = SCARG(uap, nsa);
olsa = SCARG(uap, osa);
if (olsa != NULL)
obsa = stackgap_alloc(&sg, sizeof(struct sigaction));
else
obsa = NULL;
if (nlsa != NULL) {
nbsa = stackgap_alloc(&sg, sizeof(struct sigaction));
if ((error = copyin(nlsa, &tmplsa, sizeof(tmplsa))) != 0)
return (error);
linux_old_to_bsd_sigaction(&tmplsa, &tmpbsa);
if ((error = copyout(&tmpbsa, nbsa, sizeof(tmpbsa))) != 0)
return (error);
} else
nbsa = NULL;
SCARG(&sa, signum) = linux_to_bsd_sig[SCARG(uap, signum)];
SCARG(&sa, nsa) = nbsa;
SCARG(&sa, osa) = obsa;
/* Silently ignore unknown signals */
if (SCARG(&sa, signum) == 0) {
if (obsa != NULL) {
obsa->sa_handler = SIG_IGN;
sigemptyset(&obsa->sa_mask);
obsa->sa_flags = 0;
}
}
else {
if ((error = sys_sigaction(p, &sa, retval)) != 0)
return (error);
}
if (olsa != NULL) {
if ((error = copyin(obsa, &tmpbsa, sizeof(tmpbsa))) != 0)
return (error);
bsd_to_linux_old_sigaction(&tmpbsa, &tmplsa);
if ((error = copyout(&tmplsa, olsa, sizeof(tmplsa))) != 0)
return (error);
}
return (0);
}
int
linux_sys_rt_sigaction(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_rt_sigaction_args /* {
syscallarg(int) signum;
syscallarg(struct linux_sigaction *) nsa;
syscallarg(struct linux_sigaction *) osa;
syscallarg(size_t) sigsetsize;
} */ *uap = v;
struct linux_sigaction *nlsa, *olsa, tmplsa;
struct sigaction *nbsa, *obsa, tmpbsa;
struct sys_sigaction_args sa;
caddr_t sg;
int error;
if (SCARG(uap, sigsetsize) != sizeof(linux_sigset_t))
return (EINVAL);
if (SCARG(uap, signum) < 0 || SCARG(uap, signum) >= LINUX__NSIG)
return (EINVAL);
sg = stackgap_init(p->p_emul);
nlsa = SCARG(uap, nsa);
olsa = SCARG(uap, osa);
if (olsa != NULL)
obsa = stackgap_alloc(&sg, sizeof(struct sigaction));
else
obsa = NULL;
if (nlsa != NULL) {
nbsa = stackgap_alloc(&sg, sizeof(struct sigaction));
if ((error = copyin(nlsa, &tmplsa, sizeof(tmplsa))) != 0)
return (error);
linux_to_bsd_sigaction(&tmplsa, &tmpbsa);
if ((error = copyout(&tmpbsa, nbsa, sizeof(tmpbsa))) != 0)
return (error);
}
else
nbsa = NULL;
SCARG(&sa, signum) = linux_to_bsd_sig[SCARG(uap, signum)];
SCARG(&sa, nsa) = nbsa;
SCARG(&sa, osa) = obsa;
/* Silently ignore unknown signals */
if (SCARG(&sa, signum) == 0) {
if (obsa != NULL) {
obsa->sa_handler = SIG_IGN;
sigemptyset(&obsa->sa_mask);
obsa->sa_flags = 0;
}
}
else {
if ((error = sys_sigaction(p, &sa, retval)) != 0)
return (error);
}
if (olsa != NULL) {
if ((error = copyin(obsa, &tmpbsa, sizeof(tmpbsa))) != 0)
return (error);
bsd_to_linux_sigaction(&tmpbsa, &tmplsa);
if ((error = copyout(&tmplsa, olsa, sizeof(tmplsa))) != 0)
return (error);
}
return (0);
}
/*
* The Linux signal() system call. I think that the signal() in the C
* library actually calls sigaction, so I doubt this one is ever used.
* But hey, it can't hurt having it here. The same restrictions as for
* sigaction() apply.
*/
int
linux_sys_signal(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_signal_args /* {
syscallarg(int) sig;
syscallarg(linux_handler_t) handler;
} */ *uap = v;
caddr_t sg;
struct sys_sigaction_args sa_args;
struct sigaction *osa, *nsa, tmpsa;
int error;
if (SCARG(uap, sig) < 0 || SCARG(uap, sig) >= LINUX__NSIG)
return (EINVAL);
sg = stackgap_init(p->p_emul);
nsa = stackgap_alloc(&sg, sizeof *nsa);
osa = stackgap_alloc(&sg, sizeof *osa);
tmpsa.sa_handler = SCARG(uap, handler);
tmpsa.sa_mask = (sigset_t) 0;
tmpsa.sa_flags = SA_RESETHAND | SA_NODEFER;
if ((error = copyout(&tmpsa, nsa, sizeof tmpsa)))
return (error);
SCARG(&sa_args, signum) = linux_to_bsd_sig[SCARG(uap, sig)];
SCARG(&sa_args, osa) = osa;
SCARG(&sa_args, nsa) = nsa;
/* Silently ignore unknown signals */
if (SCARG(&sa_args, signum) != 0) {
if ((error = sys_sigaction(p, &sa_args, retval)))
return (error);
}
if ((error = copyin(osa, &tmpsa, sizeof *osa)))
return (error);
retval[0] = (register_t) tmpsa.sa_handler;
return (0);
}
/*
* This is just a copy of the svr4 compat one. I feel so creative now.
*/
int
linux_sys_sigprocmask(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_sigprocmask_args /* {
syscallarg(int) how;
syscallarg(linux_old_sigset_t *) set;
syscallarg(linux_old_sigset_t *) oset;
} */ *uap = v;
linux_old_sigset_t ss;
sigset_t bs;
int error = 0;
*retval = 0;
if (SCARG(uap, oset) != NULL) {
/* Fix the return value first if needed */
bsd_to_linux_old_sigset(&p->p_sigmask, &ss);
if ((error = copyout(&ss, SCARG(uap, oset), sizeof(ss))) != 0)
return (error);
}
if (SCARG(uap, set) == NULL)
/* Just examine */
return (0);
if ((error = copyin(SCARG(uap, set), &ss, sizeof(ss))) != 0)
return (error);
linux_old_to_bsd_sigset(&ss, &bs);
(void) splhigh();
switch (SCARG(uap, how)) {
case LINUX_SIG_BLOCK:
p->p_sigmask |= bs & ~sigcantmask;
break;
case LINUX_SIG_UNBLOCK:
p->p_sigmask &= ~bs;
break;
case LINUX_SIG_SETMASK:
p->p_sigmask = bs & ~sigcantmask;
break;
default:
error = EINVAL;
break;
}
(void) spl0();
return (error);
}
int
linux_sys_rt_sigprocmask(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_rt_sigprocmask_args /* {
syscallarg(int) how;
syscallarg(const linux_sigset_t *) set;
syscallarg(linux_sigset_t *) oset;
syscallarg(size_t) sigsetsize;
} */ *uap = v;
linux_sigset_t ls;
sigset_t bs;
int error = 0;
if (SCARG(uap, sigsetsize) != sizeof(linux_sigset_t))
return (EINVAL);
*retval = 0;
if (SCARG(uap, oset) != NULL) {
/* Fix the return value first if needed */
bsd_to_linux_sigset(&p->p_sigmask, &ls);
if ((error = copyout(&ls, SCARG(uap, oset), sizeof(ls))) != 0)
return (error);
}
if (SCARG(uap, set) == NULL)
/* Just examine */
return (0);
if ((error = copyin(SCARG(uap, set), &ls, sizeof(ls))) != 0)
return (error);
linux_to_bsd_sigset(&ls, &bs);
(void) splhigh();
switch (SCARG(uap, how)) {
case LINUX_SIG_BLOCK:
p->p_sigmask |= bs & ~sigcantmask;
break;
case LINUX_SIG_UNBLOCK:
p->p_sigmask &= ~bs;
break;
case LINUX_SIG_SETMASK:
p->p_sigmask = bs & ~sigcantmask;
break;
default:
error = EINVAL;
break;
}
(void) spl0();
return (error);
}
/*
* The functions below really make no distinction between an int
* and [linux_]sigset_t. This is ok for now, but it might break
* sometime. Then again, sigset_t is trusted to be an int everywhere
* else in the kernel too.
*/
/* ARGSUSED */
int
linux_sys_siggetmask(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
bsd_to_linux_old_sigset(&p->p_sigmask, (linux_old_sigset_t *)retval);
return (0);
}
/*
* The following three functions fiddle with a process' signal mask.
* Convert the signal masks because of the different signal
* values for Linux. The need for this is the reason why
* they are here, and have not been mapped directly.
*/
int
linux_sys_sigsetmask(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_sigsetmask_args /* {
syscallarg(linux_old_sigset_t) mask;
} */ *uap = v;
linux_old_sigset_t mask;
sigset_t bsdsig;
bsd_to_linux_old_sigset(&p->p_sigmask, (linux_old_sigset_t *)retval);
mask = SCARG(uap, mask);
bsd_to_linux_old_sigset(&bsdsig, &mask);
splhigh();
p->p_sigmask = bsdsig & ~sigcantmask;
spl0();
return (0);
}
int
linux_sys_sigpending(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_sigpending_args /* {
syscallarg(linux_old_sigset_t *) mask;
} */ *uap = v;
sigset_t bs;
linux_old_sigset_t ls;
bs = p->p_siglist & p->p_sigmask;
bsd_to_linux_old_sigset(&bs, &ls);
return (copyout(&ls, SCARG(uap, mask), sizeof ls));
}
int
linux_sys_rt_sigpending(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_rt_sigpending_args /* {
syscallarg(linux_sigset_t *) set;
syscallarg(size_t) sigsetsize;
} */ *uap = v;
sigset_t bs;
linux_sigset_t ls;
if (SCARG(uap, sigsetsize) != sizeof(linux_sigset_t))
return (EINVAL);
bs = p->p_siglist & p->p_sigmask;
bsd_to_linux_sigset(&bs, &ls);
return (copyout(&ls, SCARG(uap, set), sizeof ls));
}
int
linux_sys_sigsuspend(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_sigsuspend_args /* {
syscallarg(caddr_t) restart;
syscallarg(int) oldmask;
syscallarg(int) mask;
} */ *uap = v;
struct sys_sigsuspend_args sa;
linux_old_sigset_t mask = SCARG(uap, mask);
linux_old_to_bsd_sigset(&mask, &SCARG(&sa, mask));
return (sys_sigsuspend(p, &sa, retval));
}
int
linux_sys_rt_sigsuspend(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_rt_sigsuspend_args /* {
syscallarg(sigset_t *) unewset;
syscallarg(size_t) sigsetsize;
} */ *uap = v;
struct sys_sigsuspend_args sa;
linux_sigset_t mask;
int error;
if (SCARG(uap, sigsetsize) != sizeof(linux_sigset_t))
return (EINVAL);
error = copyin(SCARG(uap, unewset), &mask, sizeof mask);
if (error)
return (error);
linux_to_bsd_sigset(&mask, &SCARG(&sa, mask));
return (sys_sigsuspend(p, &sa, retval));
}
/*
* Linux' sigaltstack structure is just of a different order than BSD's
* so just shuffle the fields around and call our version.
*/
int
linux_sys_sigaltstack(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_sigaltstack_args /* {
syscallarg(const struct linux_sigaltstack *) nss;
syscallarg(struct linux_sigaltstack *) oss;
} */ *uap = v;
struct linux_sigaltstack linux_ss;
struct sigaltstack *bsd_nss, *bsd_oss;
struct sys_sigaltstack_args sa;
int error;
caddr_t sg;
sg = stackgap_init(p->p_emul);
if (SCARG(uap, nss) != NULL) {
bsd_nss = stackgap_alloc(&sg, sizeof *bsd_nss);
error = copyin(SCARG(uap, nss), &linux_ss, sizeof linux_ss);
if (error)
return (error);
bsd_nss->ss_sp = linux_ss.ss_sp;
bsd_nss->ss_size = linux_ss.ss_size;
bsd_nss->ss_flags = (linux_ss.ss_flags & LINUX_SS_DISABLE) ?
SS_DISABLE : 0;
SCARG(&sa, nss) = bsd_nss;
} else
SCARG(&sa, nss) = NULL;
if (SCARG(uap, oss) == NULL) {
SCARG(&sa, oss) = NULL;
return (sys_sigaltstack(p, &sa, retval));
}
SCARG(&sa, oss) = bsd_oss = stackgap_alloc(&sg, sizeof *bsd_oss);
error = sys_sigaltstack(p, &sa, retval);
if (error)
return (error);
linux_ss.ss_sp = bsd_oss->ss_sp;
linux_ss.ss_size = bsd_oss->ss_size;
linux_ss.ss_flags = 0;
if (bsd_oss->ss_flags & SS_ONSTACK)
linux_ss.ss_flags |= LINUX_SS_ONSTACK;
if (bsd_oss->ss_flags & SS_DISABLE)
linux_ss.ss_flags |= LINUX_SS_DISABLE;
return (copyout(&linux_ss, SCARG(uap, oss), sizeof linux_ss));
}
/*
* The deprecated pause(2), which is really just an instance
* of sigsuspend(2).
*/
int
linux_sys_pause(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct sys_sigsuspend_args bsa;
SCARG(&bsa, mask) = p->p_sigmask;
return (sys_sigsuspend(p, &bsa, retval));
}
/*
* Once more: only a signal conversion is needed.
*/
int
linux_sys_kill(p, v, retval)
register struct proc *p;
void *v;
register_t *retval;
{
struct linux_sys_kill_args /* {
syscallarg(int) pid;
syscallarg(int) signum;
} */ *uap = v;
struct sys_kill_args ka;
SCARG(&ka, pid) = SCARG(uap, pid);
if (SCARG(uap, signum) < 0 || SCARG(uap, signum) >= LINUX__NSIG)
return (EINVAL);
SCARG(&ka, signum) = linux_to_bsd_sig[SCARG(uap, signum)];
return (sys_kill(p, &ka, retval));
}