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33 * @(#)signalvar.h 8.6 (Berkeley) 2/19/95
34 * $FreeBSD: src/sys/sys/signalvar.h,v 1.34.2.1 2000/05/16 06:58:05 dillon Exp $
35 * $DragonFly: src/sys/sys/signalvar.h,v 1.23 2008/04/21 15:47:58 dillon Exp $
38 #ifndef _SYS_SIGNALVAR_H_ /* tmp for user.h */
39 #define _SYS_SIGNALVAR_H_
42 * Don't bring in the entire bleeding include set if we aren't the kernel.
43 * Userland is not allowed to bring in sys/proc.h except under special
44 * circumstances (e.g. sys/user.h)
46 #include <sys/signal.h>
49 #include <machine/lock.h>
53 * Kernel signal definitions and data structures,
54 * not exported to user programs.
58 * Process signal actions and state, needed only within the process
59 * (not necessarily resident).
62 sig_t ps_sigact
[_SIG_MAXSIG
]; /* disposition of signals */
63 sigset_t ps_catchmask
[_SIG_MAXSIG
]; /* signals to be blocked */
64 sigset_t ps_sigignore
; /* Signals being ignored. */
65 sigset_t ps_sigcatch
; /* Signals being caught by user. */
66 sigset_t ps_sigonstack
; /* signals to take on sigstack */
67 sigset_t ps_sigintr
; /* signals that interrupt syscalls */
68 sigset_t ps_sigreset
; /* signals that reset when caught */
69 sigset_t ps_signodefer
; /* signals not masked while handled */
70 sigset_t ps_siginfo
; /* signals that want SA_SIGINFO args */
71 sigset_t ps_usertramp
; /* SunOS compat; libc sigtramp XXX */
72 sigset_t ps_sigmailbox
; /* signals that update a mailbox */
77 /* additional signal action values, used only temporarily/internally */
78 #define SIG_CATCH ((__sighandler_t *)2)
79 #define SIG_HOLD ((__sighandler_t *)3)
84 * get signal action for process and signal; currently only for current process
86 #define SIGACTION(p, sig) (p->p_sigacts->ps_sigact[_SIG_IDX(sig)])
91 * sigset_t manipulation macros
93 #define SIGADDSET(set, signo) \
94 (set).__bits[_SIG_WORD(signo)] |= _SIG_BIT(signo)
96 #define SIGDELSET(set, signo) \
97 (set).__bits[_SIG_WORD(signo)] &= ~_SIG_BIT(signo)
99 #define SIGEMPTYSET(set) \
102 for (__i = 0; __i < _SIG_WORDS; __i++) \
103 (set).__bits[__i] = 0; \
106 #define SIGFILLSET(set) \
109 for (__i = 0; __i < _SIG_WORDS; __i++) \
110 (set).__bits[__i] = ~(unsigned int)0; \
113 #define SIGISMEMBER(set, signo) \
114 ((set).__bits[_SIG_WORD(signo)] & _SIG_BIT(signo))
116 #define SIGISEMPTY(set) __sigisempty(&(set))
117 #define SIGNOTEMPTY(set) (!__sigisempty(&(set)))
119 #define SIGSETEQ(set1, set2) __sigseteq(&(set1), &(set2))
120 #define SIGSETNEQ(set1, set2) (!__sigseteq(&(set1), &(set2)))
122 #define SIGSETOR(set1, set2) \
125 for (__i = 0; __i < _SIG_WORDS; __i++) \
126 (set1).__bits[__i] |= (set2).__bits[__i]; \
129 #define SIGSETAND(set1, set2) \
132 for (__i = 0; __i < _SIG_WORDS; __i++) \
133 (set1).__bits[__i] &= (set2).__bits[__i]; \
136 #define SIGSETNAND(set1, set2) \
139 for (__i = 0; __i < _SIG_WORDS; __i++) \
140 (set1).__bits[__i] &= ~(set2).__bits[__i]; \
143 #define SIG_CANTMASK(set) \
144 SIGDELSET(set, SIGKILL), SIGDELSET(set, SIGSTOP)
146 #define SIG_STOPSIGMASK(set) \
147 SIGDELSET(set, SIGSTOP), SIGDELSET(set, SIGTSTP), \
148 SIGDELSET(set, SIGTTIN), SIGDELSET(set, SIGTTOU)
150 #define SIG_CONTSIGMASK(set) \
151 SIGDELSET(set, SIGCONT)
153 #define sigcantmask (sigmask(SIGKILL) | sigmask(SIGSTOP))
156 __sigisempty(sigset_t
*set
)
160 for (i
= 0; i
< _SIG_WORDS
; i
++) {
168 __sigseteq(sigset_t
*set1
, sigset_t
*set2
)
172 for (i
= 0; i
< _SIG_WORDS
; i
++) {
173 if (set1
->__bits
[i
] != set2
->__bits
[i
])
181 typedef void (*proc_func_t
)(struct proc
*);
188 extern int sugid_coredump
; /* Sysctl variable kern.sugid_coredump */
191 * Machine-independent functions:
193 void execsigs (struct proc
*p
);
194 void gsignal (int pgid
, int sig
);
195 int issignal (struct lwp
*lp
);
196 int iscaught (struct lwp
*p
);
197 void killproc (struct proc
*p
, char *why
);
198 void pgsigio (struct sigio
*, int signum
, int checkctty
);
199 void pgsignal (struct pgrp
*pgrp
, int sig
, int checkctty
);
200 void postsig (int sig
);
201 void ksignal (struct proc
*p
, int sig
);
202 void lwpsignal (struct proc
*p
, struct lwp
*lp
, int sig
);
203 void lwp_signotify (struct lwp
*lp
);
204 void siginit (struct proc
*p
);
205 void trapsignal (struct lwp
*p
, int sig
, u_long code
);
208 * Machine-dependent functions:
210 void sendsig (sig_t action
, int sig
, sigset_t
*retmask
, u_long code
);
211 void sendupcall (struct vmupcall
*vu
, int morepending
);
212 int fetchupcall (struct vmupcall
*vu
, int morepending
, void *rsp
);
213 void sigexit (struct lwp
*lp
, int sig
);
214 int checkpoint_signal_handler(struct lwp
*p
);
218 #endif /* !_SYS_SIGNALVAR_H_ */