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| -rw-r--r-- | freebsd/sys/signalvar.h | 372 |
1 files changed, 0 insertions, 372 deletions
diff --git a/freebsd/sys/signalvar.h b/freebsd/sys/signalvar.h deleted file mode 100644 index 58653516..00000000 --- a/freebsd/sys/signalvar.h +++ /dev/null @@ -1,372 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. 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. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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. - * - * @(#)signalvar.h 8.6 (Berkeley) 2/19/95 - * $FreeBSD$ - */ - -#ifndef _SYS_SIGNALVAR_HH_ -#define _SYS_SIGNALVAR_HH_ - -#include <freebsd/sys/queue.h> -#include <freebsd/sys/_lock.h> -#include <freebsd/sys/_mutex.h> -#include <freebsd/sys/signal.h> - -/* - * Kernel signal definitions and data structures, - * not exported to user programs. - */ - -/* - * Logical process signal actions and state, needed only within the process - * The mapping between sigacts and proc structures is 1:1 except for rfork() - * processes masquerading as threads which use one structure for the whole - * group. All members are locked by the included mutex. The reference count - * and mutex must be last for the bcopy in sigacts_copy() to work. - */ -struct sigacts { - sig_t ps_sigact[_SIG_MAXSIG]; /* Disposition of signals. */ - sigset_t ps_catchmask[_SIG_MAXSIG]; /* 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_sigignore; /* Signals being ignored. */ - sigset_t ps_sigcatch; /* Signals being caught by user. */ - sigset_t ps_freebsd4; /* signals using freebsd4 ucontext. */ - sigset_t ps_osigset; /* Signals using <= 3.x osigset_t. */ - sigset_t ps_usertramp; /* SunOS compat; libc sigtramp. XXX */ - int ps_flag; - int ps_refcnt; - struct mtx ps_mtx; -}; - -#define PS_NOCLDWAIT 0x0001 /* No zombies if child dies */ -#define PS_NOCLDSTOP 0x0002 /* No SIGCHLD when children stop. */ -#define PS_CLDSIGIGN 0x0004 /* The SIGCHLD handler is SIG_IGN. */ - -#if defined(_KERNEL) && defined(COMPAT_43) -/* - * Compatibility. - */ -typedef struct { - struct osigcontext si_sc; - int si_signo; - int si_code; - union sigval si_value; -} osiginfo_t; - -struct osigaction { - union { - void (*__sa_handler)(int); - void (*__sa_sigaction)(int, osiginfo_t *, void *); - } __sigaction_u; /* signal handler */ - osigset_t sa_mask; /* signal mask to apply */ - int sa_flags; /* see signal options below */ -}; - -typedef void __osiginfohandler_t(int, osiginfo_t *, void *); -#endif /* _KERNEL && COMPAT_43 */ - -/* additional signal action values, used only temporarily/internally */ -#define SIG_CATCH ((__sighandler_t *)2) -/* #define SIG_HOLD ((__sighandler_t *)3) See signal.h */ - -/* - * get signal action for process and signal; currently only for current process - */ -#define SIGACTION(p, sig) (p->p_sigacts->ps_sigact[_SIG_IDX(sig)]) - -/* - * sigset_t manipulation macros - */ -#define SIGADDSET(set, signo) \ - ((set).__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo)) - -#define SIGDELSET(set, signo) \ - ((set).__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo)) - -#define SIGEMPTYSET(set) \ - do { \ - int __i; \ - for (__i = 0; __i < _SIG_WORDS; __i++) \ - (set).__bits[__i] = 0; \ - } while (0) - -#define SIGFILLSET(set) \ - do { \ - int __i; \ - for (__i = 0; __i < _SIG_WORDS; __i++) \ - (set).__bits[__i] = ~0U; \ - } while (0) - -#define SIGISMEMBER(set, signo) \ - ((set).__bits[_SIG_WORD(signo)] & _SIG_BIT(signo)) - -#define SIGISEMPTY(set) (__sigisempty(&(set))) -#define SIGNOTEMPTY(set) (!__sigisempty(&(set))) - -#define SIGSETEQ(set1, set2) (__sigseteq(&(set1), &(set2))) -#define SIGSETNEQ(set1, set2) (!__sigseteq(&(set1), &(set2))) - -#define SIGSETOR(set1, set2) \ - do { \ - int __i; \ - for (__i = 0; __i < _SIG_WORDS; __i++) \ - (set1).__bits[__i] |= (set2).__bits[__i]; \ - } while (0) - -#define SIGSETAND(set1, set2) \ - do { \ - int __i; \ - for (__i = 0; __i < _SIG_WORDS; __i++) \ - (set1).__bits[__i] &= (set2).__bits[__i]; \ - } while (0) - -#define SIGSETNAND(set1, set2) \ - do { \ - int __i; \ - for (__i = 0; __i < _SIG_WORDS; __i++) \ - (set1).__bits[__i] &= ~(set2).__bits[__i]; \ - } while (0) - -#define SIGSETLO(set1, set2) ((set1).__bits[0] = (set2).__bits[0]) -#define SIGSETOLD(set, oset) ((set).__bits[0] = (oset)) - -#define SIG_CANTMASK(set) \ - SIGDELSET(set, SIGKILL), SIGDELSET(set, SIGSTOP) - -#define SIG_STOPSIGMASK(set) \ - SIGDELSET(set, SIGSTOP), SIGDELSET(set, SIGTSTP), \ - SIGDELSET(set, SIGTTIN), SIGDELSET(set, SIGTTOU) - -#define SIG_CONTSIGMASK(set) \ - SIGDELSET(set, SIGCONT) - -#define sigcantmask (sigmask(SIGKILL) | sigmask(SIGSTOP)) - -#define SIG2OSIG(sig, osig) (osig = (sig).__bits[0]) -#define OSIG2SIG(osig, sig) SIGEMPTYSET(sig); (sig).__bits[0] = osig - -static __inline int -__sigisempty(sigset_t *set) -{ - int i; - - for (i = 0; i < _SIG_WORDS; i++) { - if (set->__bits[i]) - return (0); - } - return (1); -} - -static __inline int -__sigseteq(sigset_t *set1, sigset_t *set2) -{ - int i; - - for (i = 0; i < _SIG_WORDS; i++) { - if (set1->__bits[i] != set2->__bits[i]) - return (0); - } - return (1); -} - -struct osigevent { - int sigev_notify; /* Notification type */ - union { - int __sigev_signo; /* Signal number */ - int __sigev_notify_kqueue; - } __sigev_u; - union sigval sigev_value; /* Signal value */ -}; - -typedef struct ksiginfo { - TAILQ_ENTRY(ksiginfo) ksi_link; - siginfo_t ksi_info; - int ksi_flags; - struct sigqueue *ksi_sigq; -} ksiginfo_t; - -#define ksi_signo ksi_info.si_signo -#define ksi_errno ksi_info.si_errno -#define ksi_code ksi_info.si_code -#define ksi_pid ksi_info.si_pid -#define ksi_uid ksi_info.si_uid -#define ksi_status ksi_info.si_status -#define ksi_addr ksi_info.si_addr -#define ksi_value ksi_info.si_value -#define ksi_band ksi_info.si_band -#define ksi_trapno ksi_info.si_trapno -#define ksi_overrun ksi_info.si_overrun -#define ksi_timerid ksi_info.si_timerid -#define ksi_mqd ksi_info.si_mqd - -/* bits for ksi_flags */ -#define KSI_TRAP 0x01 /* Generated by trap. */ -#define KSI_EXT 0x02 /* Externally managed ksi. */ -#define KSI_INS 0x04 /* Directly insert ksi, not the copy */ -#define KSI_SIGQ 0x08 /* Generated by sigqueue, might ret EGAIN. */ -#define KSI_HEAD 0x10 /* Insert into head, not tail. */ -#define KSI_COPYMASK (KSI_TRAP|KSI_SIGQ) - -#define KSI_ONQ(ksi) ((ksi)->ksi_sigq != NULL) - -typedef struct sigqueue { - sigset_t sq_signals; /* All pending signals. */ - sigset_t sq_kill; /* Legacy depth 1 queue. */ - TAILQ_HEAD(, ksiginfo) sq_list;/* Queued signal info. */ - struct proc *sq_proc; - int sq_flags; -} sigqueue_t; - -/* Flags for ksi_flags */ -#define SQ_INIT 0x01 - -#ifdef _KERNEL - -/* Return nonzero if process p has an unmasked pending signal. */ -#define SIGPENDING(td) \ - ((!SIGISEMPTY((td)->td_siglist) && \ - !sigsetmasked(&(td)->td_siglist, &(td)->td_sigmask)) || \ - (!SIGISEMPTY((td)->td_proc->p_siglist) && \ - !sigsetmasked(&(td)->td_proc->p_siglist, &(td)->td_sigmask))) -/* - * Return the value of the pseudo-expression ((*set & ~*mask) != 0). This - * is an optimized version of SIGISEMPTY() on a temporary variable - * containing SIGSETNAND(*set, *mask). - */ -static __inline int -sigsetmasked(sigset_t *set, sigset_t *mask) -{ - int i; - - for (i = 0; i < _SIG_WORDS; i++) { - if (set->__bits[i] & ~mask->__bits[i]) - return (0); - } - return (1); -} - -#define ksiginfo_init(ksi) \ -do { \ - bzero(ksi, sizeof(ksiginfo_t)); \ -} while(0) - -#define ksiginfo_init_trap(ksi) \ -do { \ - ksiginfo_t *kp = ksi; \ - bzero(kp, sizeof(ksiginfo_t)); \ - kp->ksi_flags |= KSI_TRAP; \ -} while(0) - -static __inline void -ksiginfo_copy(ksiginfo_t *src, ksiginfo_t *dst) -{ - (dst)->ksi_info = src->ksi_info; - (dst)->ksi_flags = (src->ksi_flags & KSI_COPYMASK); -} - -struct pgrp; -struct thread; -struct proc; -struct sigio; -struct mtx; - -extern int sugid_coredump; /* Sysctl variable kern.sugid_coredump */ -extern struct mtx sigio_lock; -extern int kern_logsigexit; /* Sysctl variable kern.logsigexit */ - -/* - * Lock the pointers for a sigio object in the underlying objects of - * a file descriptor. - */ -#define SIGIO_LOCK() mtx_lock(&sigio_lock) -#define SIGIO_TRYLOCK() mtx_trylock(&sigio_lock) -#define SIGIO_UNLOCK() mtx_unlock(&sigio_lock) -#define SIGIO_LOCKED() mtx_owned(&sigio_lock) -#define SIGIO_ASSERT(type) mtx_assert(&sigio_lock, type) - -/* stop_allowed parameter for cursig */ -#define SIG_STOP_ALLOWED 100 -#define SIG_STOP_NOT_ALLOWED 101 - -/* flags for kern_sigprocmask */ -#define SIGPROCMASK_OLD 0x0001 -#define SIGPROCMASK_PROC_LOCKED 0x0002 -#define SIGPROCMASK_PS_LOCKED 0x0004 - -/* - * Machine-independent functions: - */ -int cursig(struct thread *td, int stop_allowed); -void execsigs(struct proc *p); -void gsignal(int pgid, int sig, ksiginfo_t *ksi); -void killproc(struct proc *p, char *why); -void pksignal(struct proc *p, int sig, ksiginfo_t *ksi); -void pgsigio(struct sigio **, int signum, int checkctty); -void pgsignal(struct pgrp *pgrp, int sig, int checkctty, ksiginfo_t *ksi); -int postsig(int sig); -void psignal(struct proc *p, int sig); -int psignal_event(struct proc *p, struct sigevent *, ksiginfo_t *); -struct sigacts *sigacts_alloc(void); -void sigacts_copy(struct sigacts *dest, struct sigacts *src); -void sigacts_free(struct sigacts *ps); -struct sigacts *sigacts_hold(struct sigacts *ps); -int sigacts_shared(struct sigacts *ps); -void sigexit(struct thread *td, int signum) __dead2; -int sig_ffs(sigset_t *set); -void siginit(struct proc *p); -void signotify(struct thread *td); -void tdksignal(struct thread *td, int sig, ksiginfo_t *ksi); -void tdsigcleanup(struct thread *td); -int tdsignal(struct proc *p, struct thread *td, int sig, - ksiginfo_t *ksi); -void trapsignal(struct thread *td, ksiginfo_t *); -int ptracestop(struct thread *td, int sig); -ksiginfo_t * ksiginfo_alloc(int); -void ksiginfo_free(ksiginfo_t *); -void sigqueue_init(struct sigqueue *queue, struct proc *p); -void sigqueue_flush(struct sigqueue *queue); -void sigqueue_delete_proc(struct proc *p, int sig); -void sigqueue_delete(struct sigqueue *queue, int sig); -void sigqueue_take(ksiginfo_t *ksi); -int kern_sigtimedwait(struct thread *, sigset_t, - ksiginfo_t *, struct timespec *); -int kern_sigprocmask(struct thread *td, int how, - sigset_t *set, sigset_t *oset, int flags); -/* - * Machine-dependent functions: - */ -void sendsig(sig_t, ksiginfo_t *, sigset_t *retmask); - -#endif /* _KERNEL */ - -#endif /* !_SYS_SIGNALVAR_HH_ */ |