2 * sigstat - print out useful information about signal arguments
10 extern char *strrchr();
11 static char *signames[NSIG];
24 if (t = strrchr(argv[0], '/'))
30 for (i = 1; i < NSIG; i++)
34 for (i = 1; i < argc; i++)
35 sigstat(atoi(argv[i]));
43 struct sigaction oact;
48 if (sig < 0 || sig >= NSIG) {
49 fprintf(stderr, "%s: %d: signal out of range\n", progname, sig);
52 signame = signames[sig];
54 sigprocmask(SIG_BLOCK, (sigset_t *)NULL, &oset);
55 if (sigismember(&oset, sig))
56 printf("%s: signal is blocked\n", signame);
57 sigaction(sig, (struct sigaction *)NULL, &oact);
58 if (oact.sa_handler == SIG_IGN)
59 printf("%s: signal is ignored\n", signame);
60 else if (oact.sa_handler == SIG_DFL)
61 printf("%s: signal is defaulted\n", signame);
63 printf("%s: signal is trapped (?)\n", signame);
69 bzero(signames, sizeof(signames));
71 #if defined (SIGHUP) /* hangup */
72 signames[SIGHUP] = "SIGHUP";
74 #if defined (SIGINT) /* interrupt */
75 signames[SIGINT] = "SIGINT";
77 #if defined (SIGQUIT) /* quit */
78 signames[SIGQUIT] = "SIGQUIT";
80 #if defined (SIGILL) /* illegal instruction (not reset when caught) */
81 signames[SIGILL] = "SIGILL";
83 #if defined (SIGTRAP) /* trace trap (not reset when caught) */
84 signames[SIGTRAP] = "SIGTRAP";
86 #if defined (SIGABRT) /* */
87 signames[SIGABRT] = "SIGABRT";
89 #if defined (SIGIOT) /* IOT instruction */
90 signames[SIGIOT] = "SIGIOT";
92 #if defined (SIGEMT) /* EMT instruction */
93 signames[SIGEMT] = "SIGEMT";
95 #if defined (SIGFPE) /* floating point exception */
96 signames[SIGFPE] = "SIGFPE";
98 #if defined (SIGKILL) /* kill (cannot be caught or ignored) */
99 signames[SIGKILL] = "SIGKILL";
101 #if defined (SIGBUS) /* bus error */
102 signames[SIGBUS] = "SIGBUS";
104 #if defined (SIGSEGV) /* segmentation violation */
105 signames[SIGSEGV] = "SIGSEGV";
107 #if defined (SIGSYS) /* bad argument to system call */
108 signames[SIGSYS] = "SIGSYS";
110 #if defined (SIGPIPE) /* write on a pipe with no one to read it */
111 signames[SIGPIPE] = "SIGPIPE";
113 #if defined (SIGALRM) /* alarm clock */
114 signames[SIGALRM] = "SIGALRM";
116 #if defined (SIGTERM) /* software termination signal from kill */
117 signames[SIGTERM] = "SIGTERM";
119 #if defined (SIGCLD) /* Like SIGCHLD. */
120 signames[SIGCLD] = "SIGCLD";
122 #if defined (SIGPWR) /* Magic thing for some machines. */
123 signames[SIGPWR] = "SIGPWR";
125 #if defined (SIGPOLL) /* For keyboard input? */
126 signames[SIGPOLL] = "SIGPOLL";
128 #if defined (SIGURG) /* urgent condition on IO channel */
129 signames[SIGURG] = "SIGURG";
131 #if defined (SIGSTOP) /* sendable stop signal not from tty */
132 signames[SIGSTOP] = "SIGSTOP";
134 #if defined (SIGTSTP) /* stop signal from tty */
135 signames[SIGTSTP] = "SIGTSTP";
137 #if defined (SIGCONT) /* continue a stopped process */
138 signames[SIGCONT] = "SIGCONT";
140 #if defined (SIGCHLD) /* to parent on child stop or exit */
141 signames[SIGCHLD] = "SIGCHLD";
143 #if defined (SIGTTIN) /* to readers pgrp upon background tty read */
144 signames[SIGTTIN] = "SIGTTIN";
146 #if defined (SIGTTOU) /* like TTIN for output if (tp->t_local<OSTOP) */
147 signames[SIGTTOU] = "SIGTTOU";
149 #if defined (SIGIO) /* input/output possible signal */
150 signames[SIGIO] = "SIGIO";
152 #if defined (SIGXCPU) /* exceeded CPU time limit */
153 signames[SIGXCPU] = "SIGXCPU";
155 #if defined (SIGXFSZ) /* exceeded file size limit */
156 signames[SIGXFSZ] = "SIGXFSZ";
158 #if defined (SIGVTALRM) /* virtual time alarm */
159 signames[SIGVTALRM] = "SIGVTALRM";
161 #if defined (SIGPROF) /* profiling time alarm */
162 signames[SIGPROF] = "SIGPROF";
164 #if defined (SIGWINCH) /* window changed */
165 signames[SIGWINCH] = "SIGWINCH";
167 #if defined (SIGLOST) /* resource lost (eg, record-lock lost) */
168 signames[SIGLOST] = "SIGLOST";
170 #if defined (SIGUSR1) /* user defined signal 1 */
171 signames[SIGUSR1] = "SIGUSR1";
173 #if defined (SIGUSR2) /* user defined signal 2 */
174 signames[SIGUSR2] = "SIGUSR2";
176 #if defined (SIGMSG) /* HFT input data pending */
177 signames[SIGMSG] = "SIGMSG";
179 #if defined (SIGPWR) /* power failure imminent (save your data) */
180 signames[SIGPWR] = "SIGPWR";
182 #if defined (SIGDANGER) /* system crash imminent */
183 signames[SIGDANGER] = "SIGDANGER";
185 #if defined (SIGMIGRATE) /* migrate process to another CPU */
186 signames[SIGMIGRATE] = "SIGMIGRATE";
188 #if defined (SIGPRE) /* programming error */
189 signames[SIGPRE] = "SIGPRE";
191 #if defined (SIGGRANT) /* HFT monitor mode granted */
192 signames[SIGGRANT] = "SIGGRANT";
194 #if defined (SIGRETRACT) /* HFT monitor mode retracted */
195 signames[SIGRETRACT] = "SIGRETRACT";
197 #if defined (SIGSOUND) /* HFT sound sequence has completed */
198 signames[SIGSOUND] = "SIGSOUND";
201 for (i = 0; i < NSIG; i++)
202 if (signames[i] == (char *)NULL) {
203 signames[i] = (char *)malloc (16);;
204 sprintf (signames[i], "signal %d", i);