254 lines
9.9 KiB
C
254 lines
9.9 KiB
C
/*
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* Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
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/*
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)signalvar.h 8.3 (Berkeley) 1/4/94
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*/
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#ifndef _SYS_SIGNALVAR_H_ /* tmp for user.h */
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#define _SYS_SIGNALVAR_H_
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#include <sys/appleapiopts.h>
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#ifdef BSD_KERNEL_PRIVATE
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#include <stdatomic.h>
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/* signal flags */
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#define SAS_OLDMASK 0x01 /* need to restore mask before pause */
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#define SAS_ALTSTACK 0x02 /* have alternate signal stack */
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/*
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* Additional signal action values, used only temporarily/internally; these
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* values should be non-intersecting with values defined in signal.h, e.g.:
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* SIG_IGN, SIG_DFL, SIG_ERR, SIG_IGN.
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*/
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#define KERN_SIG_CATCH CAST_USER_ADDR_T(2)
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#define KERN_SIG_HOLD CAST_USER_ADDR_T(3)
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#define KERN_SIG_WAIT CAST_USER_ADDR_T(4)
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/* Values for ps_sigreturn_validation */
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#define PS_SIGRETURN_VALIDATION_DEFAULT 0x0u
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#define PS_SIGRETURN_VALIDATION_ENABLED 0x1u
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#define PS_SIGRETURN_VALIDATION_DISABLED 0x2u
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/*
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* get signal action for process and signal; currently only for current process
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*/
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#define SIGACTION(p, sig) ({ p->p_sigacts.ps_sigact[(sig)]; })
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#define SIGTRAMP(p, sig) ({ p->p_sigacts.ps_trampact[(sig)]; })
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/*
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* Check for per-process and per thread signals.
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*/
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#define SHOULDissignal(p, uthreadp) \
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(((uthreadp)->uu_siglist) \
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& ~((((uthreadp)->uu_sigmask) \
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| (((p)->p_lflag & P_LTRACED) ? 0 : (p)->p_sigignore)) \
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& ~sigcantmask))
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/*
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* Check for signals and per-thread signals.
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* Use in trap() and syscall() before
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* exiting kernel.
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*/
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#define CHECK_SIGNALS(p, thread, uthreadp) \
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(!thread_should_halt(thread) \
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&& (SHOULDissignal(p,uthreadp)))
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/*
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* Signal properties and actions.
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* The array below categorizes the signals and their default actions
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* according to the following properties:
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*/
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#define SA_KILL 0x01 /* terminates process by default */
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#define SA_CORE 0x02 /* ditto and coredumps */
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#define SA_STOP 0x04 /* suspend process */
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#define SA_TTYSTOP 0x08 /* ditto, from tty */
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#define SA_IGNORE 0x10 /* ignore by default */
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#define SA_CONT 0x20 /* continue if suspended */
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#define SA_CANTMASK 0x40 /* non-maskable, catchable */
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#ifdef SIGPROP
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int sigprop[NSIG] = {
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0, /* unused */
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SA_KILL, /* SIGHUP */
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SA_KILL, /* SIGINT */
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SA_KILL | SA_CORE, /* SIGQUIT */
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SA_KILL | SA_CORE, /* SIGILL */
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SA_KILL | SA_CORE, /* SIGTRAP */
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SA_KILL | SA_CORE, /* SIGABRT */
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SA_KILL | SA_CORE, /* SIGEMT */
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SA_KILL | SA_CORE, /* SIGFPE */
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SA_KILL, /* SIGKILL */
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SA_KILL | SA_CORE, /* SIGBUS */
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SA_KILL | SA_CORE, /* SIGSEGV */
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SA_KILL | SA_CORE, /* SIGSYS */
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SA_KILL, /* SIGPIPE */
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SA_KILL, /* SIGALRM */
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SA_KILL, /* SIGTERM */
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SA_IGNORE, /* SIGURG */
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SA_STOP, /* SIGSTOP */
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SA_STOP | SA_TTYSTOP, /* SIGTSTP */
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SA_IGNORE | SA_CONT, /* SIGCONT */
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SA_IGNORE, /* SIGCHLD */
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SA_STOP | SA_TTYSTOP, /* SIGTTIN */
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SA_STOP | SA_TTYSTOP, /* SIGTTOU */
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SA_IGNORE, /* SIGIO */
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SA_KILL, /* SIGXCPU */
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SA_KILL, /* SIGXFSZ */
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SA_KILL, /* SIGVTALRM */
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SA_KILL, /* SIGPROF */
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SA_IGNORE, /* SIGWINCH */
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SA_IGNORE, /* SIGINFO */
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SA_KILL, /* SIGUSR1 */
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SA_KILL, /* SIGUSR2 */
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};
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#define contsigmask (sigmask(SIGCONT))
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#define stopsigmask (sigmask(SIGSTOP) | sigmask(SIGTSTP) | \
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sigmask(SIGTTIN) | sigmask(SIGTTOU))
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#endif /* SIGPROP */
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#define sigcantmask (sigmask(SIGKILL) | sigmask(SIGSTOP))
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#define SIGRESTRICTMASK (sigmask(SIGILL) | sigmask(SIGTRAP) | sigmask(SIGABRT) | \
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sigmask(SIGFPE) | sigmask(SIGBUS) | sigmask(SIGSEGV) | \
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sigmask(SIGSYS))
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/*
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* Machine-independent functions:
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*/
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#if DEVELOPMENT || DEBUG
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extern bool no_sigsys;
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#define send_sigsys (!no_sigsys)
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#else
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#define send_sigsys 1
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#endif
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void execsigs(struct proc *p, thread_t thread);
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void gsignal(int pgid, int sig);
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int issignal_locked(struct proc *p);
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int CURSIG(struct proc *p);
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int clear_procsiglist(struct proc *p, int bit, int in_signalstart);
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int set_procsigmask(struct proc *p, int bit);
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void postsig_locked(int sig);
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void siginit(struct proc *p);
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void trapsignal(struct proc *p, int sig, unsigned code);
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void pt_setrunnable(struct proc *p);
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int hassigprop(int sig, int prop);
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int setsigvec(proc_t, thread_t, int signum, struct __kern_sigaction *, boolean_t in_sigstart);
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struct os_reason;
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/*
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* Machine-dependent functions:
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*/
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void sendsig(struct proc *, /*sig_t*/ user_addr_t action, int sig,
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int returnmask, uint32_t code, sigset_t siginfo);
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void psignal(struct proc *p, int sig);
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void psignal_with_reason(struct proc *p, int sig, struct os_reason *signal_reason);
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void psignal_locked(struct proc *, int);
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void psignal_try_thread(proc_t, thread_t, int signum);
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void psignal_try_thread_with_reason(proc_t, thread_t, int, struct os_reason*);
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void psignal_thread_with_reason(proc_t, thread_t, int, struct os_reason*);
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void psignal_uthread(thread_t, int);
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void pgsignal(struct pgrp *pgrp, int sig, int checkctty);
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void tty_pgsignal_locked(struct tty * tp, int sig, int checkctty);
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void threadsignal(thread_t sig_actthread, int signum,
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mach_exception_code_t code, boolean_t set_exitreason);
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int thread_issignal(proc_t p, thread_t th, sigset_t mask);
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void psignal_vfork(struct proc *p, task_t new_task, thread_t thread,
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int signum);
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void psignal_vfork_with_reason(proc_t p, task_t new_task, thread_t thread,
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int signum, struct os_reason *signal_reason);
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void signal_setast(thread_t sig_actthread);
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void pgsigio(pid_t pgid, int signalnum);
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void sig_lock_to_exit(struct proc *p);
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int sig_try_locked(struct proc *p);
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#endif /* BSD_KERNEL_PRIVATE */
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#if defined(KERNEL_PRIVATE)
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/* Forward-declare these for consumers of the SDK that don't know about BSD types */
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struct proc;
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struct os_reason;
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void psignal_sigkill_with_reason(struct proc *p, struct os_reason *signal_reason);
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#endif /* defined(KERNEL_PRIVATE) */
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#ifdef XNU_KERNEL_PRIVATE
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/* Functions exported to Mach as well */
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#define COREDUMP_IGNORE_ULIMIT 0x0001 /* Ignore the process's core file ulimit. */
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#define COREDUMP_FULLFSYNC 0x0002 /* Run F_FULLFSYNC on the core file's vnode */
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cpu_type_t process_cpu_type(struct proc * core_proc);
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cpu_type_t process_cpu_subtype(struct proc * core_proc);
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int coredump(struct proc *p, uint32_t reserve_mb, int coredump_flags);
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void set_thread_exit_reason(void *th, void *reason, boolean_t proc_locked);
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#endif /* XNU_KERNEL_PRIVATE */
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#endif /* !_SYS_SIGNALVAR_H_ */
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