/*-
* Copyright (c) 1995, 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Frank van der Linden and Eric Haszlakiewicz.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/
/* Used on: alpha (aka osf_sigaction), arm, i386, m68k, mips, ppc */
/* Not used on: aarch64, sparc, sparc64, amd64 */
/*
* The Linux sigaction() system call. Do the usual conversions,
* and just call sigaction().
*/
int
linux_sys_sigaction(struct lwp *l, const struct linux_sys_sigaction_args *uap, register_t *retval)
{
/* {
syscallarg(int) signum;
syscallarg(const struct linux_old_sigaction *) nsa;
syscallarg(struct linux_old_sigaction *) osa;
} */
struct linux_old_sigaction nlsa, olsa;
struct sigaction nbsa, obsa;
int error, sig;
/* XXX XAX handle switch to RT signal handler */
/* XXX XAX and update emuldata->ps_siginfo. */
if (SCARG(uap, nsa)) {
error = copyin(SCARG(uap, nsa), &nlsa, sizeof(nlsa));
if (error)
return (error);
linux_old_to_native_sigaction(&nbsa, &nlsa);
}
sig = SCARG(uap, signum);
/*
* XXX: Linux has 33 realtime signals, the go binary wants to
* reset all of them; nothing else uses the last RT signal, so for
* now ignore it.
*/
if (sig == LINUX__NSIG) {
uprintf("%s: setting signal %d ignored\n", __func__, sig);
sig--; /* back to 63 which is ignored */
}
if (sig < 0 || sig >= LINUX__NSIG)
return (EINVAL);
if (sig > 0 && !linux_to_native_signo[sig]) {
/* Pretend that we did something useful for unknown signals. */
obsa.sa_handler = SIG_IGN;
sigemptyset(&obsa.sa_mask);
obsa.sa_flags = 0;
} else {
error = sigaction1(l, linux_to_native_signo[sig],
SCARG(uap, nsa) ? &nbsa : 0, SCARG(uap, osa) ? &obsa : 0,
NULL, 0);
if (error)
return (error);
}
if (SCARG(uap, osa)) {
native_to_linux_old_sigaction(&olsa, &obsa);
error = copyout(&olsa, SCARG(uap, osa), sizeof(olsa));
if (error)
return (error);
}
return (0);
}
