* Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
- *
+ *
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
- *
+ *
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
- *
+ *
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
- *
+ *
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
* @(#)signalvar.h 8.3 (Berkeley) 1/4/94
*/
-#ifndef _SYS_SIGNALVAR_H_ /* tmp for user.h */
-#define _SYS_SIGNALVAR_H_
+#ifndef _SYS_SIGNALVAR_H_ /* tmp for user.h */
+#define _SYS_SIGNALVAR_H_
#include <sys/appleapiopts.h>
#ifdef BSD_KERNEL_PRIVATE
+
+#include <stdatomic.h>
+
/*
* Kernel signal definitions and data structures,
* not exported to user programs.
* Process signal actions and state, needed only within the process
* (not necessarily resident).
*/
-struct sigacts {
- user_addr_t ps_sigact[NSIG]; /* disposition of signals */
- user_addr_t ps_trampact[NSIG]; /* disposition of signals */
- sigset_t ps_catchmask[NSIG]; /* signals to be blocked */
- sigset_t ps_sigonstack; /* signals to take on sigstack */
- sigset_t ps_sigintr; /* signals that interrupt syscalls */
- sigset_t ps_sigreset; /* signals that reset when caught */
- sigset_t ps_signodefer; /* signals not masked while handled */
- sigset_t ps_siginfo; /* signals that want SA_SIGINFO args */
- sigset_t ps_oldmask; /* saved mask from before sigpause */
- int ps_flags; /* signal flags, below */
- struct kern_sigaltstack ps_sigstk; /* sp, length & flags */
- int ps_sig; /* for core dump/debugger XXX */
- int ps_code; /* for core dump/debugger XXX */
- int ps_addr; /* for core dump/debugger XXX */
- sigset_t ps_usertramp; /* SunOS compat; libc sigtramp XXX */
- sigset_t ps_64regset; /* signals that want SA_EXSIGINFO args */
+struct sigacts {
+ user_addr_t ps_sigact[NSIG]; /* disposition of signals */
+ user_addr_t ps_trampact[NSIG]; /* disposition of signals */
+ sigset_t ps_catchmask[NSIG]; /* signals to be blocked */
+ sigset_t ps_sigonstack; /* signals to take on sigstack */
+ sigset_t ps_sigintr; /* signals that interrupt syscalls */
+ sigset_t ps_sigreset; /* signals that reset when caught */
+ sigset_t ps_signodefer; /* signals not masked while handled */
+ sigset_t ps_siginfo; /* signals that want SA_SIGINFO args */
+ sigset_t ps_oldmask; /* saved mask from before sigpause */
+ user_addr_t ps_sigreturn_token; /* random token used to validate sigreturn arguments */
+ _Atomic uint32_t ps_sigreturn_validation; /* sigreturn argument validation state */
+ int ps_flags; /* signal flags, below */
+ struct kern_sigaltstack ps_sigstk; /* sp, length & flags */
+ int ps_sig; /* for core dump/debugger XXX */
+ int ps_code; /* for core dump/debugger XXX */
+ int ps_addr; /* for core dump/debugger XXX */
};
/* signal flags */
-#define SAS_OLDMASK 0x01 /* need to restore mask before pause */
-#define SAS_ALTSTACK 0x02 /* have alternate signal stack */
+#define SAS_OLDMASK 0x01 /* need to restore mask before pause */
+#define SAS_ALTSTACK 0x02 /* have alternate signal stack */
/*
* Additional signal action values, used only temporarily/internally; these
* values should be non-intersecting with values defined in signal.h, e.g.:
* SIG_IGN, SIG_DFL, SIG_ERR, SIG_IGN.
*/
-#define KERN_SIG_CATCH CAST_USER_ADDR_T(2)
-#define KERN_SIG_HOLD CAST_USER_ADDR_T(3)
-#define KERN_SIG_WAIT CAST_USER_ADDR_T(4)
+#define KERN_SIG_CATCH CAST_USER_ADDR_T(2)
+#define KERN_SIG_HOLD CAST_USER_ADDR_T(3)
+#define KERN_SIG_WAIT CAST_USER_ADDR_T(4)
+
+/* Values for ps_sigreturn_validation */
+#define PS_SIGRETURN_VALIDATION_DEFAULT 0x0u
+#define PS_SIGRETURN_VALIDATION_ENABLED 0x1u
+#define PS_SIGRETURN_VALIDATION_DISABLED 0x2u
/*
* get signal action for process and signal; currently only for current process
*/
-#define SIGACTION(p, sig) (p->p_sigacts->ps_sigact[(sig)])
+#define SIGACTION(p, sig) (p->p_sigacts->ps_sigact[(sig)])
/*
* Check for per-process and per thread signals.
*/
-#define SHOULDissignal(p,uthreadp) \
- (((uthreadp)->uu_siglist) \
+#define SHOULDissignal(p, uthreadp) \
+ (((uthreadp)->uu_siglist) \
& ~((((uthreadp)->uu_sigmask) \
| (((p)->p_lflag & P_LTRACED) ? 0 : (p)->p_sigignore)) \
& ~sigcantmask))
/*
- * Check for signals and per-thread signals.
+ * Check for signals and per-thread signals.
* Use in trap() and syscall() before
* exiting kernel.
*/
-#define CHECK_SIGNALS(p, thread, uthreadp) \
- (!thread_should_halt(thread) \
+#define CHECK_SIGNALS(p, thread, uthreadp) \
+ (!thread_should_halt(thread) \
&& (SHOULDissignal(p,uthreadp)))
/*
* The array below categorizes the signals and their default actions
* according to the following properties:
*/
-#define SA_KILL 0x01 /* terminates process by default */
-#define SA_CORE 0x02 /* ditto and coredumps */
-#define SA_STOP 0x04 /* suspend process */
-#define SA_TTYSTOP 0x08 /* ditto, from tty */
-#define SA_IGNORE 0x10 /* ignore by default */
-#define SA_CONT 0x20 /* continue if suspended */
-#define SA_CANTMASK 0x40 /* non-maskable, catchable */
-
-#ifdef SIGPROP
+#define SA_KILL 0x01 /* terminates process by default */
+#define SA_CORE 0x02 /* ditto and coredumps */
+#define SA_STOP 0x04 /* suspend process */
+#define SA_TTYSTOP 0x08 /* ditto, from tty */
+#define SA_IGNORE 0x10 /* ignore by default */
+#define SA_CONT 0x20 /* continue if suspended */
+#define SA_CANTMASK 0x40 /* non-maskable, catchable */
+
+#ifdef SIGPROP
int sigprop[NSIG] = {
- 0, /* unused */
- SA_KILL, /* SIGHUP */
- SA_KILL, /* SIGINT */
- SA_KILL|SA_CORE, /* SIGQUIT */
- SA_KILL|SA_CORE, /* SIGILL */
- SA_KILL|SA_CORE, /* SIGTRAP */
- SA_KILL|SA_CORE, /* SIGABRT */
- SA_KILL|SA_CORE, /* SIGEMT */
- SA_KILL|SA_CORE, /* SIGFPE */
- SA_KILL, /* SIGKILL */
- SA_KILL|SA_CORE, /* SIGBUS */
- SA_KILL|SA_CORE, /* SIGSEGV */
- SA_KILL|SA_CORE, /* SIGSYS */
- SA_KILL, /* SIGPIPE */
- SA_KILL, /* SIGALRM */
- SA_KILL, /* SIGTERM */
- SA_IGNORE, /* SIGURG */
- SA_STOP, /* SIGSTOP */
- SA_STOP|SA_TTYSTOP, /* SIGTSTP */
- SA_IGNORE|SA_CONT, /* SIGCONT */
- SA_IGNORE, /* SIGCHLD */
- SA_STOP|SA_TTYSTOP, /* SIGTTIN */
- SA_STOP|SA_TTYSTOP, /* SIGTTOU */
- SA_IGNORE, /* SIGIO */
- SA_KILL, /* SIGXCPU */
- SA_KILL, /* SIGXFSZ */
- SA_KILL, /* SIGVTALRM */
- SA_KILL, /* SIGPROF */
- SA_IGNORE, /* SIGWINCH */
- SA_IGNORE, /* SIGINFO */
- SA_KILL, /* SIGUSR1 */
- SA_KILL, /* SIGUSR2 */
+ 0, /* unused */
+ SA_KILL, /* SIGHUP */
+ SA_KILL, /* SIGINT */
+ SA_KILL | SA_CORE, /* SIGQUIT */
+ SA_KILL | SA_CORE, /* SIGILL */
+ SA_KILL | SA_CORE, /* SIGTRAP */
+ SA_KILL | SA_CORE, /* SIGABRT */
+ SA_KILL | SA_CORE, /* SIGEMT */
+ SA_KILL | SA_CORE, /* SIGFPE */
+ SA_KILL, /* SIGKILL */
+ SA_KILL | SA_CORE, /* SIGBUS */
+ SA_KILL | SA_CORE, /* SIGSEGV */
+ SA_KILL | SA_CORE, /* SIGSYS */
+ SA_KILL, /* SIGPIPE */
+ SA_KILL, /* SIGALRM */
+ SA_KILL, /* SIGTERM */
+ SA_IGNORE, /* SIGURG */
+ SA_STOP, /* SIGSTOP */
+ SA_STOP | SA_TTYSTOP, /* SIGTSTP */
+ SA_IGNORE | SA_CONT, /* SIGCONT */
+ SA_IGNORE, /* SIGCHLD */
+ SA_STOP | SA_TTYSTOP, /* SIGTTIN */
+ SA_STOP | SA_TTYSTOP, /* SIGTTOU */
+ SA_IGNORE, /* SIGIO */
+ SA_KILL, /* SIGXCPU */
+ SA_KILL, /* SIGXFSZ */
+ SA_KILL, /* SIGVTALRM */
+ SA_KILL, /* SIGPROF */
+ SA_IGNORE, /* SIGWINCH */
+ SA_IGNORE, /* SIGINFO */
+ SA_KILL, /* SIGUSR1 */
+ SA_KILL, /* SIGUSR2 */
};
-#define contsigmask (sigmask(SIGCONT))
-#define stopsigmask (sigmask(SIGSTOP) | sigmask(SIGTSTP) | \
- sigmask(SIGTTIN) | sigmask(SIGTTOU))
+#define contsigmask (sigmask(SIGCONT))
+#define stopsigmask (sigmask(SIGSTOP) | sigmask(SIGTSTP) | \
+ sigmask(SIGTTIN) | sigmask(SIGTTOU))
#endif /* SIGPROP */
-#define sigcantmask (sigmask(SIGKILL) | sigmask(SIGSTOP))
+#define sigcantmask (sigmask(SIGKILL) | sigmask(SIGSTOP))
#define SIGRESTRICTMASK (sigmask(SIGILL) | sigmask(SIGTRAP) | sigmask(SIGABRT) | \
- sigmask(SIGFPE) | sigmask(SIGBUS) | sigmask(SIGSEGV) | \
- sigmask(SIGSYS))
+ sigmask(SIGFPE) | sigmask(SIGBUS) | sigmask(SIGSEGV) | \
+ sigmask(SIGSYS))
extern unsigned sigrestrict_arg;
* Machine-independent functions:
*/
-void execsigs(struct proc *p, thread_t thread);
-void gsignal(int pgid, int sig);
-int issignal_locked(struct proc *p);
-int CURSIG(struct proc *p);
+void execsigs(struct proc *p, thread_t thread);
+void gsignal(int pgid, int sig);
+int issignal_locked(struct proc *p);
+int CURSIG(struct proc *p);
int clear_procsiglist(struct proc *p, int bit, int in_signalstart);
int set_procsigmask(struct proc *p, int bit);
-void postsig_locked(int sig);
-void siginit(struct proc *p);
-void trapsignal(struct proc *p, int sig, unsigned code);
-void pt_setrunnable(struct proc *p);
-int hassigprop(int sig, int prop);
+void postsig_locked(int sig);
+void siginit(struct proc *p);
+void trapsignal(struct proc *p, int sig, unsigned code);
+void pt_setrunnable(struct proc *p);
+int hassigprop(int sig, int prop);
int setsigvec(proc_t, thread_t, int signum, struct __kern_sigaction *, boolean_t in_sigstart);
struct os_reason;
/*
* Machine-dependent functions:
*/
-void sendsig(struct proc *, /*sig_t*/ user_addr_t action, int sig,
- int returnmask, uint32_t code);
-
-void psignal(struct proc *p, int sig);
-void psignal_with_reason(struct proc *p, int sig, struct os_reason *signal_reason);
-void psignal_locked(struct proc *, int);
-void psignal_try_thread(proc_t, thread_t, int signum);
-void psignal_try_thread_with_reason(proc_t, thread_t, int, struct os_reason*);
-void psignal_uthread(thread_t, int);
-void pgsignal(struct pgrp *pgrp, int sig, int checkctty);
-void tty_pgsignal(struct tty * tp, int sig, int checkctty);
-void threadsignal(thread_t sig_actthread, int signum,
- mach_exception_code_t code, boolean_t set_exitreason);
-int thread_issignal(proc_t p, thread_t th, sigset_t mask);
-void psignal_vfork(struct proc *p, task_t new_task, thread_t thread,
- int signum);
+void sendsig(struct proc *, /*sig_t*/ user_addr_t action, int sig,
+ int returnmask, uint32_t code, sigset_t siginfo);
+
+void psignal(struct proc *p, int sig);
+void psignal_with_reason(struct proc *p, int sig, struct os_reason *signal_reason);
+void psignal_locked(struct proc *, int);
+void psignal_try_thread(proc_t, thread_t, int signum);
+void psignal_try_thread_with_reason(proc_t, thread_t, int, struct os_reason*);
+void psignal_thread_with_reason(proc_t, thread_t, int, struct os_reason*);
+void psignal_uthread(thread_t, int);
+void pgsignal(struct pgrp *pgrp, int sig, int checkctty);
+void tty_pgsignal(struct tty * tp, int sig, int checkctty);
+void threadsignal(thread_t sig_actthread, int signum,
+ mach_exception_code_t code, boolean_t set_exitreason);
+int thread_issignal(proc_t p, thread_t th, sigset_t mask);
+void psignal_vfork(struct proc *p, task_t new_task, thread_t thread,
+ int signum);
void psignal_vfork_with_reason(proc_t p, task_t new_task, thread_t thread,
- int signum, struct os_reason *signal_reason);
-void signal_setast(thread_t sig_actthread);
-void pgsigio(pid_t pgid, int signalnum);
+ int signum, struct os_reason *signal_reason);
+void signal_setast(thread_t sig_actthread);
+void pgsigio(pid_t pgid, int signalnum);
void sig_lock_to_exit(struct proc *p);
int sig_try_locked(struct proc *p);
-#endif /* BSD_KERNEL_PRIVATE */
+#endif /* BSD_KERNEL_PRIVATE */
+#if defined(KERNEL_PRIVATE)
+/* Forward-declare these for consumers of the SDK that don't know about BSD types */
+struct proc;
+typedef struct proc * proc_t;
+struct os_reason;
+void psignal_sigkill_with_reason(proc_t p, struct os_reason *signal_reason);
+#endif /* defined(KERNEL_PRIVATE) */
#ifdef XNU_KERNEL_PRIVATE
#define COREDUMP_IGNORE_ULIMIT 0x0001 /* Ignore the process's core file ulimit. */
#define COREDUMP_FULLFSYNC 0x0002 /* Run F_FULLFSYNC on the core file's vnode */
-int coredump(struct proc *p, uint32_t reserve_mb, int coredump_flags);
+int coredump(struct proc *p, uint32_t reserve_mb, int coredump_flags);
void set_thread_exit_reason(void *th, void *reason, boolean_t proc_locked);
#endif /* XNU_KERNEL_PRIVATE */
-#endif /* !_SYS_SIGNALVAR_H_ */
+#endif /* !_SYS_SIGNALVAR_H_ */
projects / apple / xnu.git / blobdiff