1 #define NOPLAN9DEFINES
2 #include <u.h>
3 #include <libc.h>
4 
5 #include <signal.h>
6 #include <sys/types.h>
7 #include <sys/resource.h>
8 #include <sys/wait.h>
9 #include <sys/time.h>
10 
11 static struct {
12 	int sig;
13 	char *str;
14 } tab[] = {
15 	SIGHUP,		"hangup",
16 	SIGINT,		"interrupt",
17 	SIGQUIT,		"quit",
18 	SIGILL,		"sys: trap: illegal instruction",
19 	SIGTRAP,		"sys: trace trap",
20 	SIGABRT,		"sys: abort",
21 	SIGEMT,		"sys: emulate instruction executed",
22 	SIGFPE,		"sys: fp: trap",
23 	SIGKILL,		"sys: kill",
24 	SIGBUS,		"sys: bus error",
25 	SIGSEGV,		"sys: segmentation violation",
26 	SIGALRM,		"alarm",
27 	SIGTERM,		"kill",
28 	SIGURG,		"sys: urgent condition on socket",
29 	SIGSTOP,		"sys: stop",
30 	SIGTSTP,		"sys: tstp",
31 	SIGCONT,		"sys: cont",
32 	SIGCHLD,		"sys: child",
33 	SIGTTIN,		"sys: ttin",
34 	SIGTTOU,		"sys: ttou",
35 	SIGIO,		"sys: i/o possible on fd",
36 	SIGXCPU,		"sys: cpu time limit exceeded",
37 	SIGXFSZ,		"sys: file size limit exceeded",
38 	SIGVTALRM,	"sys: virtual time alarm",
39 	SIGPROF,		"sys: profiling timer alarm",
40 	SIGWINCH,	"sys: window size change",
41 	SIGINFO,		"sys: status request",
42 	SIGUSR1,		"sys: usr1",
43 	SIGUSR2,		"sys: usr2",
44 };
45 	
46 char*
47 _p9sigstr(int sig, char *tmp)
48 {
49 	int i;
50 
51 	for(i=0; i<nelem(tab); i++)
52 		if(tab[i].sig == sig)
53 			return tab[i].str;
54 	sprint(tmp, "sys: signal %d", sig);
55 	return tmp;
56 }
57 
58 int
59 _p9strsig(char *s)
60 {
61 	int i;
62 
63 	for(i=0; i<nelem(tab); i++)
64 		if(strcmp(s, tab[i].str) == 0)
65 			return tab[i].sig;
66 	return 0;
67 }
68 
69 int
70 await(char *str, int n)
71 {
72 	int pid, status, cd;
73 	struct rusage ru;
74 	char buf[128], tmp[64];
75 	ulong u, s;
76 
77 	for(;;){
78 		pid = wait3(&status, 0, &ru);
79 		if(pid < 0)
80 			return -1;
81 		u = ru.ru_utime.tv_sec*1000+((ru.ru_utime.tv_usec+500)/1000);
82 		s = ru.ru_stime.tv_sec*1000+((ru.ru_stime.tv_usec+500)/1000);
83 		if(WIFEXITED(status)){
84 			status = WEXITSTATUS(status);
85 			if(status)
86 				snprint(buf, sizeof buf, "%d %lud %lud %lud %d", pid, u, s, u+s, status);
87 			else
88 				snprint(buf, sizeof buf, "%d %lud %lud %lud ''", pid, u, s, u+s, status);
89 			strecpy(str, str+n, buf);
90 			return strlen(str);
91 		}
92 		if(WIFSIGNALED(status)){
93 			cd = WCOREDUMP(status);
94 			USED(cd);
95 			snprint(buf, sizeof buf, "%d %lud %lud %lud '%s'", pid, u, s, u+s, _p9sigstr(WTERMSIG(status), tmp));
96 			strecpy(str, str+n, buf);
97 			return strlen(str);
98 		}
99 	}
100 }