813 lines
18 KiB
C
813 lines
18 KiB
C
/*-
|
|
* Copyright (c) 1994-1995 Søren Schmidt
|
|
* 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
|
|
* in this position and unchanged.
|
|
* 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. 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/mutex.h>
|
|
#include <sys/sx.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/signalvar.h>
|
|
#include <sys/syscallsubr.h>
|
|
#include <sys/sysproto.h>
|
|
|
|
#include <security/audit/audit.h>
|
|
|
|
#include "opt_compat.h"
|
|
|
|
#ifdef COMPAT_LINUX32
|
|
#include <machine/../linux32/linux.h>
|
|
#include <machine/../linux32/linux32_proto.h>
|
|
#else
|
|
#include <machine/../linux/linux.h>
|
|
#include <machine/../linux/linux_proto.h>
|
|
#endif
|
|
#include <compat/linux/linux_signal.h>
|
|
#include <compat/linux/linux_util.h>
|
|
#include <compat/linux/linux_emul.h>
|
|
#include <compat/linux/linux_misc.h>
|
|
|
|
static int linux_do_tkill(struct thread *td, struct thread *tdt,
|
|
ksiginfo_t *ksi);
|
|
static void sicode_to_lsicode(int si_code, int *lsi_code);
|
|
|
|
|
|
#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
|
|
void
|
|
linux_to_bsd_sigset(l_sigset_t *lss, sigset_t *bss)
|
|
{
|
|
int b, l;
|
|
|
|
SIGEMPTYSET(*bss);
|
|
bss->__bits[0] = lss->__bits[0] & ~((1U << LINUX_SIGTBLSZ) - 1);
|
|
bss->__bits[1] = lss->__bits[1];
|
|
for (l = 1; l <= LINUX_SIGTBLSZ; l++) {
|
|
if (LINUX_SIGISMEMBER(*lss, l)) {
|
|
b = linux_to_bsd_signal[_SIG_IDX(l)];
|
|
if (b)
|
|
SIGADDSET(*bss, b);
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
bsd_to_linux_sigset(sigset_t *bss, l_sigset_t *lss)
|
|
{
|
|
int b, l;
|
|
|
|
LINUX_SIGEMPTYSET(*lss);
|
|
lss->__bits[0] = bss->__bits[0] & ~((1U << LINUX_SIGTBLSZ) - 1);
|
|
lss->__bits[1] = bss->__bits[1];
|
|
for (b = 1; b <= LINUX_SIGTBLSZ; b++) {
|
|
if (SIGISMEMBER(*bss, b)) {
|
|
l = bsd_to_linux_signal[_SIG_IDX(b)];
|
|
if (l)
|
|
LINUX_SIGADDSET(*lss, l);
|
|
}
|
|
}
|
|
}
|
|
#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
|
|
|
|
static void
|
|
linux_to_bsd_sigaction(l_sigaction_t *lsa, struct sigaction *bsa)
|
|
{
|
|
|
|
linux_to_bsd_sigset(&lsa->lsa_mask, &bsa->sa_mask);
|
|
bsa->sa_handler = PTRIN(lsa->lsa_handler);
|
|
bsa->sa_flags = 0;
|
|
if (lsa->lsa_flags & LINUX_SA_NOCLDSTOP)
|
|
bsa->sa_flags |= SA_NOCLDSTOP;
|
|
if (lsa->lsa_flags & LINUX_SA_NOCLDWAIT)
|
|
bsa->sa_flags |= SA_NOCLDWAIT;
|
|
if (lsa->lsa_flags & LINUX_SA_SIGINFO)
|
|
bsa->sa_flags |= SA_SIGINFO;
|
|
if (lsa->lsa_flags & LINUX_SA_ONSTACK)
|
|
bsa->sa_flags |= SA_ONSTACK;
|
|
if (lsa->lsa_flags & LINUX_SA_RESTART)
|
|
bsa->sa_flags |= SA_RESTART;
|
|
if (lsa->lsa_flags & LINUX_SA_ONESHOT)
|
|
bsa->sa_flags |= SA_RESETHAND;
|
|
if (lsa->lsa_flags & LINUX_SA_NOMASK)
|
|
bsa->sa_flags |= SA_NODEFER;
|
|
}
|
|
|
|
static void
|
|
bsd_to_linux_sigaction(struct sigaction *bsa, l_sigaction_t *lsa)
|
|
{
|
|
|
|
bsd_to_linux_sigset(&bsa->sa_mask, &lsa->lsa_mask);
|
|
#ifdef COMPAT_LINUX32
|
|
lsa->lsa_handler = (uintptr_t)bsa->sa_handler;
|
|
#else
|
|
lsa->lsa_handler = bsa->sa_handler;
|
|
#endif
|
|
lsa->lsa_restorer = 0; /* unsupported */
|
|
lsa->lsa_flags = 0;
|
|
if (bsa->sa_flags & SA_NOCLDSTOP)
|
|
lsa->lsa_flags |= LINUX_SA_NOCLDSTOP;
|
|
if (bsa->sa_flags & SA_NOCLDWAIT)
|
|
lsa->lsa_flags |= LINUX_SA_NOCLDWAIT;
|
|
if (bsa->sa_flags & SA_SIGINFO)
|
|
lsa->lsa_flags |= LINUX_SA_SIGINFO;
|
|
if (bsa->sa_flags & SA_ONSTACK)
|
|
lsa->lsa_flags |= LINUX_SA_ONSTACK;
|
|
if (bsa->sa_flags & SA_RESTART)
|
|
lsa->lsa_flags |= LINUX_SA_RESTART;
|
|
if (bsa->sa_flags & SA_RESETHAND)
|
|
lsa->lsa_flags |= LINUX_SA_ONESHOT;
|
|
if (bsa->sa_flags & SA_NODEFER)
|
|
lsa->lsa_flags |= LINUX_SA_NOMASK;
|
|
}
|
|
|
|
int
|
|
linux_do_sigaction(struct thread *td, int linux_sig, l_sigaction_t *linux_nsa,
|
|
l_sigaction_t *linux_osa)
|
|
{
|
|
struct sigaction act, oact, *nsa, *osa;
|
|
int error, sig;
|
|
|
|
if (!LINUX_SIG_VALID(linux_sig))
|
|
return (EINVAL);
|
|
|
|
osa = (linux_osa != NULL) ? &oact : NULL;
|
|
if (linux_nsa != NULL) {
|
|
nsa = &act;
|
|
linux_to_bsd_sigaction(linux_nsa, nsa);
|
|
} else
|
|
nsa = NULL;
|
|
|
|
if (linux_sig <= LINUX_SIGTBLSZ)
|
|
sig = linux_to_bsd_signal[_SIG_IDX(linux_sig)];
|
|
else
|
|
sig = linux_sig;
|
|
|
|
error = kern_sigaction(td, sig, nsa, osa, 0);
|
|
if (error)
|
|
return (error);
|
|
|
|
if (linux_osa != NULL)
|
|
bsd_to_linux_sigaction(osa, linux_osa);
|
|
|
|
return (0);
|
|
}
|
|
|
|
#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
|
|
int
|
|
linux_signal(struct thread *td, struct linux_signal_args *args)
|
|
{
|
|
l_sigaction_t nsa, osa;
|
|
int error;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(signal))
|
|
printf(ARGS(signal, "%d, %p"),
|
|
args->sig, (void *)(uintptr_t)args->handler);
|
|
#endif
|
|
|
|
nsa.lsa_handler = args->handler;
|
|
nsa.lsa_flags = LINUX_SA_ONESHOT | LINUX_SA_NOMASK;
|
|
LINUX_SIGEMPTYSET(nsa.lsa_mask);
|
|
|
|
error = linux_do_sigaction(td, args->sig, &nsa, &osa);
|
|
td->td_retval[0] = (int)(intptr_t)osa.lsa_handler;
|
|
|
|
return (error);
|
|
}
|
|
#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
|
|
|
|
int
|
|
linux_rt_sigaction(struct thread *td, struct linux_rt_sigaction_args *args)
|
|
{
|
|
l_sigaction_t nsa, osa;
|
|
int error;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(rt_sigaction))
|
|
printf(ARGS(rt_sigaction, "%ld, %p, %p, %ld"),
|
|
(long)args->sig, (void *)args->act,
|
|
(void *)args->oact, (long)args->sigsetsize);
|
|
#endif
|
|
|
|
if (args->sigsetsize != sizeof(l_sigset_t))
|
|
return (EINVAL);
|
|
|
|
if (args->act != NULL) {
|
|
error = copyin(args->act, &nsa, sizeof(l_sigaction_t));
|
|
if (error)
|
|
return (error);
|
|
}
|
|
|
|
error = linux_do_sigaction(td, args->sig,
|
|
args->act ? &nsa : NULL,
|
|
args->oact ? &osa : NULL);
|
|
|
|
if (args->oact != NULL && !error) {
|
|
error = copyout(&osa, args->oact, sizeof(l_sigaction_t));
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
linux_do_sigprocmask(struct thread *td, int how, l_sigset_t *new,
|
|
l_sigset_t *old)
|
|
{
|
|
sigset_t omask, nmask;
|
|
sigset_t *nmaskp;
|
|
int error;
|
|
|
|
td->td_retval[0] = 0;
|
|
|
|
switch (how) {
|
|
case LINUX_SIG_BLOCK:
|
|
how = SIG_BLOCK;
|
|
break;
|
|
case LINUX_SIG_UNBLOCK:
|
|
how = SIG_UNBLOCK;
|
|
break;
|
|
case LINUX_SIG_SETMASK:
|
|
how = SIG_SETMASK;
|
|
break;
|
|
default:
|
|
return (EINVAL);
|
|
}
|
|
if (new != NULL) {
|
|
linux_to_bsd_sigset(new, &nmask);
|
|
nmaskp = &nmask;
|
|
} else
|
|
nmaskp = NULL;
|
|
error = kern_sigprocmask(td, how, nmaskp, &omask, 0);
|
|
if (error == 0 && old != NULL)
|
|
bsd_to_linux_sigset(&omask, old);
|
|
|
|
return (error);
|
|
}
|
|
|
|
#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
|
|
int
|
|
linux_sigprocmask(struct thread *td, struct linux_sigprocmask_args *args)
|
|
{
|
|
l_osigset_t mask;
|
|
l_sigset_t set, oset;
|
|
int error;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(sigprocmask))
|
|
printf(ARGS(sigprocmask, "%d, *, *"), args->how);
|
|
#endif
|
|
|
|
if (args->mask != NULL) {
|
|
error = copyin(args->mask, &mask, sizeof(l_osigset_t));
|
|
if (error)
|
|
return (error);
|
|
LINUX_SIGEMPTYSET(set);
|
|
set.__bits[0] = mask;
|
|
}
|
|
|
|
error = linux_do_sigprocmask(td, args->how,
|
|
args->mask ? &set : NULL,
|
|
args->omask ? &oset : NULL);
|
|
|
|
if (args->omask != NULL && !error) {
|
|
mask = oset.__bits[0];
|
|
error = copyout(&mask, args->omask, sizeof(l_osigset_t));
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
|
|
|
|
int
|
|
linux_rt_sigprocmask(struct thread *td, struct linux_rt_sigprocmask_args *args)
|
|
{
|
|
l_sigset_t set, oset;
|
|
int error;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(rt_sigprocmask))
|
|
printf(ARGS(rt_sigprocmask, "%d, %p, %p, %ld"),
|
|
args->how, (void *)args->mask,
|
|
(void *)args->omask, (long)args->sigsetsize);
|
|
#endif
|
|
|
|
if (args->sigsetsize != sizeof(l_sigset_t))
|
|
return EINVAL;
|
|
|
|
if (args->mask != NULL) {
|
|
error = copyin(args->mask, &set, sizeof(l_sigset_t));
|
|
if (error)
|
|
return (error);
|
|
}
|
|
|
|
error = linux_do_sigprocmask(td, args->how,
|
|
args->mask ? &set : NULL,
|
|
args->omask ? &oset : NULL);
|
|
|
|
if (args->omask != NULL && !error) {
|
|
error = copyout(&oset, args->omask, sizeof(l_sigset_t));
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
#if defined(__i386__) || (defined(__amd64__) && defined(COMPAT_LINUX32))
|
|
int
|
|
linux_sgetmask(struct thread *td, struct linux_sgetmask_args *args)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
l_sigset_t mask;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(sgetmask))
|
|
printf(ARGS(sgetmask, ""));
|
|
#endif
|
|
|
|
PROC_LOCK(p);
|
|
bsd_to_linux_sigset(&td->td_sigmask, &mask);
|
|
PROC_UNLOCK(p);
|
|
td->td_retval[0] = mask.__bits[0];
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
linux_ssetmask(struct thread *td, struct linux_ssetmask_args *args)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
l_sigset_t lset;
|
|
sigset_t bset;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(ssetmask))
|
|
printf(ARGS(ssetmask, "%08lx"), (unsigned long)args->mask);
|
|
#endif
|
|
|
|
PROC_LOCK(p);
|
|
bsd_to_linux_sigset(&td->td_sigmask, &lset);
|
|
td->td_retval[0] = lset.__bits[0];
|
|
LINUX_SIGEMPTYSET(lset);
|
|
lset.__bits[0] = args->mask;
|
|
linux_to_bsd_sigset(&lset, &bset);
|
|
td->td_sigmask = bset;
|
|
SIG_CANTMASK(td->td_sigmask);
|
|
signotify(td);
|
|
PROC_UNLOCK(p);
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
linux_sigpending(struct thread *td, struct linux_sigpending_args *args)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
sigset_t bset;
|
|
l_sigset_t lset;
|
|
l_osigset_t mask;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(sigpending))
|
|
printf(ARGS(sigpending, "*"));
|
|
#endif
|
|
|
|
PROC_LOCK(p);
|
|
bset = p->p_siglist;
|
|
SIGSETOR(bset, td->td_siglist);
|
|
SIGSETAND(bset, td->td_sigmask);
|
|
PROC_UNLOCK(p);
|
|
bsd_to_linux_sigset(&bset, &lset);
|
|
mask = lset.__bits[0];
|
|
return (copyout(&mask, args->mask, sizeof(mask)));
|
|
}
|
|
#endif /* __i386__ || (__amd64__ && COMPAT_LINUX32) */
|
|
|
|
/*
|
|
* MPSAFE
|
|
*/
|
|
int
|
|
linux_rt_sigpending(struct thread *td, struct linux_rt_sigpending_args *args)
|
|
{
|
|
struct proc *p = td->td_proc;
|
|
sigset_t bset;
|
|
l_sigset_t lset;
|
|
|
|
if (args->sigsetsize > sizeof(lset))
|
|
return EINVAL;
|
|
/* NOT REACHED */
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(rt_sigpending))
|
|
printf(ARGS(rt_sigpending, "*"));
|
|
#endif
|
|
|
|
PROC_LOCK(p);
|
|
bset = p->p_siglist;
|
|
SIGSETOR(bset, td->td_siglist);
|
|
SIGSETAND(bset, td->td_sigmask);
|
|
PROC_UNLOCK(p);
|
|
bsd_to_linux_sigset(&bset, &lset);
|
|
return (copyout(&lset, args->set, args->sigsetsize));
|
|
}
|
|
|
|
/*
|
|
* MPSAFE
|
|
*/
|
|
int
|
|
linux_rt_sigtimedwait(struct thread *td,
|
|
struct linux_rt_sigtimedwait_args *args)
|
|
{
|
|
int error, sig;
|
|
l_timeval ltv;
|
|
struct timeval tv;
|
|
struct timespec ts, *tsa;
|
|
l_sigset_t lset;
|
|
sigset_t bset;
|
|
l_siginfo_t linfo;
|
|
ksiginfo_t info;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(rt_sigtimedwait))
|
|
printf(ARGS(rt_sigtimedwait, "*"));
|
|
#endif
|
|
if (args->sigsetsize != sizeof(l_sigset_t))
|
|
return (EINVAL);
|
|
|
|
if ((error = copyin(args->mask, &lset, sizeof(lset))))
|
|
return (error);
|
|
linux_to_bsd_sigset(&lset, &bset);
|
|
|
|
tsa = NULL;
|
|
if (args->timeout) {
|
|
if ((error = copyin(args->timeout, <v, sizeof(ltv))))
|
|
return (error);
|
|
#ifdef DEBUG
|
|
if (ldebug(rt_sigtimedwait))
|
|
printf(LMSG("linux_rt_sigtimedwait: "
|
|
"incoming timeout (%jd/%jd)\n"),
|
|
(intmax_t)ltv.tv_sec, (intmax_t)ltv.tv_usec);
|
|
#endif
|
|
tv.tv_sec = (long)ltv.tv_sec;
|
|
tv.tv_usec = (suseconds_t)ltv.tv_usec;
|
|
if (itimerfix(&tv)) {
|
|
/*
|
|
* The timeout was invalid. Convert it to something
|
|
* valid that will act as it does under Linux.
|
|
*/
|
|
tv.tv_sec += tv.tv_usec / 1000000;
|
|
tv.tv_usec %= 1000000;
|
|
if (tv.tv_usec < 0) {
|
|
tv.tv_sec -= 1;
|
|
tv.tv_usec += 1000000;
|
|
}
|
|
if (tv.tv_sec < 0)
|
|
timevalclear(&tv);
|
|
#ifdef DEBUG
|
|
if (ldebug(rt_sigtimedwait))
|
|
printf(LMSG("linux_rt_sigtimedwait: "
|
|
"converted timeout (%jd/%ld)\n"),
|
|
(intmax_t)tv.tv_sec, tv.tv_usec);
|
|
#endif
|
|
}
|
|
TIMEVAL_TO_TIMESPEC(&tv, &ts);
|
|
tsa = &ts;
|
|
}
|
|
error = kern_sigtimedwait(td, bset, &info, tsa);
|
|
#ifdef DEBUG
|
|
if (ldebug(rt_sigtimedwait))
|
|
printf(LMSG("linux_rt_sigtimedwait: "
|
|
"sigtimedwait returning (%d)\n"), error);
|
|
#endif
|
|
if (error)
|
|
return (error);
|
|
|
|
sig = BSD_TO_LINUX_SIGNAL(info.ksi_signo);
|
|
|
|
if (args->ptr) {
|
|
memset(&linfo, 0, sizeof(linfo));
|
|
ksiginfo_to_lsiginfo(&info, &linfo, sig);
|
|
error = copyout(&linfo, args->ptr, sizeof(linfo));
|
|
}
|
|
if (error == 0)
|
|
td->td_retval[0] = sig;
|
|
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
linux_kill(struct thread *td, struct linux_kill_args *args)
|
|
{
|
|
struct kill_args /* {
|
|
int pid;
|
|
int signum;
|
|
} */ tmp;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(kill))
|
|
printf(ARGS(kill, "%d, %d"), args->pid, args->signum);
|
|
#endif
|
|
|
|
/*
|
|
* Allow signal 0 as a means to check for privileges
|
|
*/
|
|
if (!LINUX_SIG_VALID(args->signum) && args->signum != 0)
|
|
return (EINVAL);
|
|
|
|
if (args->signum > 0 && args->signum <= LINUX_SIGTBLSZ)
|
|
tmp.signum = linux_to_bsd_signal[_SIG_IDX(args->signum)];
|
|
else
|
|
tmp.signum = args->signum;
|
|
|
|
tmp.pid = args->pid;
|
|
return (sys_kill(td, &tmp));
|
|
}
|
|
|
|
static int
|
|
linux_do_tkill(struct thread *td, struct thread *tdt, ksiginfo_t *ksi)
|
|
{
|
|
struct proc *p;
|
|
int error;
|
|
|
|
p = tdt->td_proc;
|
|
AUDIT_ARG_SIGNUM(ksi->ksi_signo);
|
|
AUDIT_ARG_PID(p->p_pid);
|
|
AUDIT_ARG_PROCESS(p);
|
|
|
|
error = p_cansignal(td, p, ksi->ksi_signo);
|
|
if (error != 0 || ksi->ksi_signo == 0)
|
|
goto out;
|
|
|
|
tdksignal(tdt, ksi->ksi_signo, ksi);
|
|
|
|
out:
|
|
PROC_UNLOCK(p);
|
|
return (error);
|
|
}
|
|
|
|
int
|
|
linux_tgkill(struct thread *td, struct linux_tgkill_args *args)
|
|
{
|
|
struct thread *tdt;
|
|
ksiginfo_t ksi;
|
|
int sig;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(tgkill))
|
|
printf(ARGS(tgkill, "%d, %d, %d"),
|
|
args->tgid, args->pid, args->sig);
|
|
#endif
|
|
|
|
if (args->pid <= 0 || args->tgid <=0)
|
|
return (EINVAL);
|
|
|
|
/*
|
|
* Allow signal 0 as a means to check for privileges
|
|
*/
|
|
if (!LINUX_SIG_VALID(args->sig) && args->sig != 0)
|
|
return (EINVAL);
|
|
|
|
if (args->sig > 0 && args->sig <= LINUX_SIGTBLSZ)
|
|
sig = linux_to_bsd_signal[_SIG_IDX(args->sig)];
|
|
else
|
|
sig = args->sig;
|
|
|
|
tdt = linux_tdfind(td, args->pid, args->tgid);
|
|
if (tdt == NULL)
|
|
return (ESRCH);
|
|
|
|
ksiginfo_init(&ksi);
|
|
ksi.ksi_signo = sig;
|
|
ksi.ksi_code = SI_LWP;
|
|
ksi.ksi_errno = 0;
|
|
ksi.ksi_pid = td->td_proc->p_pid;
|
|
ksi.ksi_uid = td->td_proc->p_ucred->cr_ruid;
|
|
return (linux_do_tkill(td, tdt, &ksi));
|
|
}
|
|
|
|
/*
|
|
* Deprecated since 2.5.75. Replaced by tgkill().
|
|
*/
|
|
int
|
|
linux_tkill(struct thread *td, struct linux_tkill_args *args)
|
|
{
|
|
struct thread *tdt;
|
|
ksiginfo_t ksi;
|
|
int sig;
|
|
|
|
#ifdef DEBUG
|
|
if (ldebug(tkill))
|
|
printf(ARGS(tkill, "%i, %i"), args->tid, args->sig);
|
|
#endif
|
|
if (args->tid <= 0)
|
|
return (EINVAL);
|
|
|
|
if (!LINUX_SIG_VALID(args->sig))
|
|
return (EINVAL);
|
|
|
|
if (args->sig > 0 && args->sig <= LINUX_SIGTBLSZ)
|
|
sig = linux_to_bsd_signal[_SIG_IDX(args->sig)];
|
|
else
|
|
sig = args->sig;
|
|
|
|
tdt = linux_tdfind(td, args->tid, -1);
|
|
if (tdt == NULL)
|
|
return (ESRCH);
|
|
|
|
ksiginfo_init(&ksi);
|
|
ksi.ksi_signo = sig;
|
|
ksi.ksi_code = SI_LWP;
|
|
ksi.ksi_errno = 0;
|
|
ksi.ksi_pid = td->td_proc->p_pid;
|
|
ksi.ksi_uid = td->td_proc->p_ucred->cr_ruid;
|
|
return (linux_do_tkill(td, tdt, &ksi));
|
|
}
|
|
|
|
void
|
|
ksiginfo_to_lsiginfo(const ksiginfo_t *ksi, l_siginfo_t *lsi, l_int sig)
|
|
{
|
|
|
|
siginfo_to_lsiginfo(&ksi->ksi_info, lsi, sig);
|
|
}
|
|
|
|
static void
|
|
sicode_to_lsicode(int si_code, int *lsi_code)
|
|
{
|
|
|
|
switch (si_code) {
|
|
case SI_USER:
|
|
*lsi_code = LINUX_SI_USER;
|
|
break;
|
|
case SI_KERNEL:
|
|
*lsi_code = LINUX_SI_KERNEL;
|
|
break;
|
|
case SI_QUEUE:
|
|
*lsi_code = LINUX_SI_QUEUE;
|
|
break;
|
|
case SI_TIMER:
|
|
*lsi_code = LINUX_SI_TIMER;
|
|
break;
|
|
case SI_MESGQ:
|
|
*lsi_code = LINUX_SI_MESGQ;
|
|
break;
|
|
case SI_ASYNCIO:
|
|
*lsi_code = LINUX_SI_ASYNCIO;
|
|
break;
|
|
case SI_LWP:
|
|
*lsi_code = LINUX_SI_TKILL;
|
|
break;
|
|
default:
|
|
*lsi_code = si_code;
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
siginfo_to_lsiginfo(const siginfo_t *si, l_siginfo_t *lsi, l_int sig)
|
|
{
|
|
|
|
/* sig alredy converted */
|
|
lsi->lsi_signo = sig;
|
|
sicode_to_lsicode(si->si_code, &lsi->lsi_code);
|
|
|
|
switch (si->si_code) {
|
|
case SI_LWP:
|
|
lsi->lsi_pid = si->si_pid;
|
|
lsi->lsi_uid = si->si_uid;
|
|
break;
|
|
|
|
case SI_TIMER:
|
|
lsi->lsi_int = si->si_value.sival_int;
|
|
lsi->lsi_ptr = PTROUT(si->si_value.sival_ptr);
|
|
lsi->lsi_tid = si->si_timerid;
|
|
break;
|
|
|
|
case SI_QUEUE:
|
|
lsi->lsi_pid = si->si_pid;
|
|
lsi->lsi_uid = si->si_uid;
|
|
lsi->lsi_ptr = PTROUT(si->si_value.sival_ptr);
|
|
break;
|
|
|
|
case SI_ASYNCIO:
|
|
lsi->lsi_int = si->si_value.sival_int;
|
|
lsi->lsi_ptr = PTROUT(si->si_value.sival_ptr);
|
|
break;
|
|
|
|
default:
|
|
switch (sig) {
|
|
case LINUX_SIGPOLL:
|
|
/* XXX si_fd? */
|
|
lsi->lsi_band = si->si_band;
|
|
break;
|
|
|
|
case LINUX_SIGCHLD:
|
|
lsi->lsi_errno = 0;
|
|
lsi->lsi_pid = si->si_pid;
|
|
lsi->lsi_uid = si->si_uid;
|
|
|
|
if (si->si_code == CLD_STOPPED)
|
|
lsi->lsi_status = BSD_TO_LINUX_SIGNAL(si->si_status);
|
|
else if (si->si_code == CLD_CONTINUED)
|
|
lsi->lsi_status = BSD_TO_LINUX_SIGNAL(SIGCONT);
|
|
else
|
|
lsi->lsi_status = si->si_status;
|
|
break;
|
|
|
|
case LINUX_SIGBUS:
|
|
case LINUX_SIGILL:
|
|
case LINUX_SIGFPE:
|
|
case LINUX_SIGSEGV:
|
|
lsi->lsi_addr = PTROUT(si->si_addr);
|
|
break;
|
|
|
|
default:
|
|
lsi->lsi_pid = si->si_pid;
|
|
lsi->lsi_uid = si->si_uid;
|
|
if (sig >= LINUX_SIGRTMIN) {
|
|
lsi->lsi_int = si->si_value.sival_int;
|
|
lsi->lsi_ptr = PTROUT(si->si_value.sival_ptr);
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
void
|
|
lsiginfo_to_ksiginfo(const l_siginfo_t *lsi, ksiginfo_t *ksi, int sig)
|
|
{
|
|
|
|
ksi->ksi_signo = sig;
|
|
ksi->ksi_code = lsi->lsi_code; /* XXX. Convert. */
|
|
ksi->ksi_pid = lsi->lsi_pid;
|
|
ksi->ksi_uid = lsi->lsi_uid;
|
|
ksi->ksi_status = lsi->lsi_status;
|
|
ksi->ksi_addr = PTRIN(lsi->lsi_addr);
|
|
ksi->ksi_info.si_value.sival_int = lsi->lsi_int;
|
|
}
|
|
|
|
int
|
|
linux_rt_sigqueueinfo(struct thread *td, struct linux_rt_sigqueueinfo_args *args)
|
|
{
|
|
l_siginfo_t linfo;
|
|
struct proc *p;
|
|
ksiginfo_t ksi;
|
|
int error;
|
|
int sig;
|
|
|
|
if (!LINUX_SIG_VALID(args->sig))
|
|
return (EINVAL);
|
|
|
|
error = copyin(args->info, &linfo, sizeof(linfo));
|
|
if (error != 0)
|
|
return (error);
|
|
|
|
if (linfo.lsi_code >= 0)
|
|
return (EPERM);
|
|
|
|
if (args->sig > 0 && args->sig <= LINUX_SIGTBLSZ)
|
|
sig = linux_to_bsd_signal[_SIG_IDX(args->sig)];
|
|
else
|
|
sig = args->sig;
|
|
|
|
error = ESRCH;
|
|
if ((p = pfind(args->pid)) != NULL ||
|
|
(p = zpfind(args->pid)) != NULL) {
|
|
error = p_cansignal(td, p, sig);
|
|
if (error != 0) {
|
|
PROC_UNLOCK(p);
|
|
return (error);
|
|
}
|
|
|
|
ksiginfo_init(&ksi);
|
|
lsiginfo_to_ksiginfo(&linfo, &ksi, sig);
|
|
error = tdsendsignal(p, NULL, sig, &ksi);
|
|
PROC_UNLOCK(p);
|
|
}
|
|
|
|
return (error);
|
|
}
|