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1.1 root 1: /*
2: * Copyright (c) 1982, 1986, 1989 Regents of the University of California.
3: * All rights reserved. The Berkeley software License Agreement
4: * specifies the terms and conditions for redistribution.
5: *
6: * %W% (Berkeley) %G%
7: */
8:
9: #ifndef NSIG
10: #define NSIG 32 /* counting 0; could be 33 (mask is 1-32) */
11:
12: #ifndef _POSIX_SOURCE
13: #ifdef KERNEL
14: #include "machine/trap.h" /* codes for SIGILL, SIGFPE */
15: #else
16: #include <machine/trap.h> /* codes for SIGILL, SIGFPE */
17: #endif
18: #endif /* _POSIX_SOURCE */
19:
20: #define SIGHUP 1 /* hangup */
21: #define SIGINT 2 /* interrupt */
22: #define SIGQUIT 3 /* quit */
23: #define SIGILL 4 /* illegal instruction (not reset when caught) */
24: #ifndef _POSIX_SOURCE
25: #define SIGTRAP 5 /* trace trap (not reset when caught) */
26: #endif
27: #define SIGABRT 6 /* abort() */
28: #ifndef _POSIX_SOURCE
29: #define SIGIOT SIGABRT /* compatibility */
30: #define SIGEMT 7 /* EMT instruction */
31: #endif
32: #define SIGFPE 8 /* floating point exception */
33: #define SIGKILL 9 /* kill (cannot be caught or ignored) */
34: #ifndef _POSIX_SOURCE
35: #define SIGBUS 10 /* bus error */
36: #endif
37: #define SIGSEGV 11 /* segmentation violation */
38: #ifndef _POSIX_SOURCE
39: #define SIGSYS 12 /* bad argument to system call */
40: #endif
41: #define SIGPIPE 13 /* write on a pipe with no one to read it */
42: #define SIGALRM 14 /* alarm clock */
43: #define SIGTERM 15 /* software termination signal from kill */
44: #ifndef _POSIX_SOURCE
45: #define SIGURG 16 /* urgent condition on IO channel */
46: #endif
47: #define SIGSTOP 17 /* sendable stop signal not from tty */
48: #define SIGTSTP 18 /* stop signal from tty */
49: #define SIGCONT 19 /* continue a stopped process */
50: #define SIGCHLD 20 /* to parent on child stop or exit */
51: #define SIGTTIN 21 /* to readers pgrp upon background tty read */
52: #define SIGTTOU 22 /* like TTIN for output if (tp->t_local<OSTOP) */
53: #ifndef _POSIX_SOURCE
54: #define SIGIO 23 /* input/output possible signal */
55: #define SIGXCPU 24 /* exceeded CPU time limit */
56: #define SIGXFSZ 25 /* exceeded file size limit */
57: #define SIGVTALRM 26 /* virtual time alarm */
58: #define SIGPROF 27 /* profiling time alarm */
59: #define SIGWINCH 28 /* window size changes */
60: #define SIGINFO 29 /* information request */
61: #endif
62: #define SIGUSR1 30 /* user defined signal 1 */
63: #define SIGUSR2 31 /* user defined signal 2 */
64:
65: #ifndef _POSIX_SOURCE
66: typedef void (*sig_t)();
67: #endif /* _POSIX_SOURCE */
68: #ifndef KERNEL
69: void (*signal())();
70: #endif /* KERNEL */
71:
72: typedef unsigned int sigset_t;
73:
74: #define sigemptyset(set) ( *(set) = 0 )
75: #define sigfillset(set) ( *(set) = ~(sigset_t)0 )
76: #define sigaddset(set, signo) ( *(set) |= 1 << ((signo) - 1), 0)
77: #define sigdelset(set, signo) ( *(set) &= ~(1 << ((signo) - 1)), 0)
78: #define sigismember(set, signo) ( (*(set) & (1 << ((signo) - 1))) != 0)
79:
80: /*
81: * Signal vector "template" used in sigaction call.
82: */
83: struct sigaction {
84: void (*sa_handler)(); /* signal handler */
85: sigset_t sa_mask; /* signal mask to apply */
86: int sa_flags; /* see signal options below */
87: };
88: #ifndef _POSIX_SOURCE
89: #define SA_ONSTACK 0x0001 /* take signal on signal stack */
90: #define SA_RESTART 0x0002 /* do not restart system on signal return */
91: #endif /* _POSIX_SOURCE */
92: #define SA_NOCLDSTOP 0x0004 /* do not generate SIGCHLD on child stop */
93:
94: /*
95: * Flags for sigprocmask:
96: */
97: #define SIG_BLOCK 1 /* block specified signal set */
98: #define SIG_UNBLOCK 2 /* unblock specified signal set */
99: #define SIG_SETMASK 3 /* set specified signal set */
100:
101: #ifndef _POSIX_SOURCE
102: /*
103: * 4.3 compatibility:
104: * Signal vector "template" used in sigvec call.
105: */
106: struct sigvec {
107: void (*sv_handler)(); /* signal handler */
108: int sv_mask; /* signal mask to apply */
109: int sv_flags; /* see signal options below */
110: };
111: #define SV_ONSTACK SA_ONSTACK
112: #define SV_INTERRUPT SA_RESTART /* same bit, opposite sense */
113: #define sv_onstack sv_flags /* isn't compatibility wonderful! */
114:
115: /*
116: * Structure used in sigstack call.
117: */
118: struct sigstack {
119: char *ss_sp; /* signal stack pointer */
120: int ss_onstack; /* current status */
121: };
122:
123: /*
124: * Information pushed on stack when a signal is delivered.
125: * This is used by the kernel to restore state following
126: * execution of the signal handler. It is also made available
127: * to the handler to allow it to restore state properly if
128: * a non-standard exit is performed.
129: */
130: struct sigcontext {
131: int sc_onstack; /* sigstack state to restore */
132: int sc_mask; /* signal mask to restore */
133: int sc_sp; /* sp to restore */
134: int sc_fp; /* fp to restore */
135: int sc_ap; /* ap to restore */
136: int sc_pc; /* pc to restore */
137: int sc_ps; /* psl to restore */
138: };
139:
140: /*
141: * Macro for converting signal number to a mask suitable for
142: * sigblock().
143: */
144: #define sigmask(m) (1 << ((m)-1))
145:
146: #define BADSIG (void (*)())-1
147: #endif /* _POSIX_SOURCE */
148:
149: #define SIG_DFL (void (*)())0
150: #define SIG_IGN (void (*)())1
151:
152: #ifdef KERNEL
153: #define SIG_CATCH (void (*)())2
154: #define SIG_HOLD (void (*)())3
155:
156: #define sigcantmask (sigmask(SIGKILL)|sigmask(SIGSTOP))
157: /*
158: * get signal action for process and signal; currently only for current process
159: */
160: #define SIGACTION(p, sig) (u.u_signal[(sig)])
161:
162: /*
163: * Determine signal that should be delivered to process,
164: * 0 if none.
165: */
166: #define CURSIG(p) \
167: (((p)->p_sig == 0 || \
168: ((p)->p_flag&STRC) == 0 && ((p)->p_sig &~ (p)->p_sigmask) == 0) ? \
169: 0 : issig())
170:
171: #endif
172: #endif
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