1 fd04aace 2003-11-23 devnull #define NOPLAN9DEFINES
  2 fd04aace 2003-11-23 devnull #include <u.h>
  3 fd04aace 2003-11-23 devnull #include <libc.h>
  4 fd04aace 2003-11-23 devnull 
  5 b2cfc4e2 2003-09-30 devnull #include <signal.h>
  6 b2cfc4e2 2003-09-30 devnull #include <sys/types.h>
  7 912fba95 2003-11-24 devnull #include <sys/time.h>
  8 b2cfc4e2 2003-09-30 devnull #include <sys/resource.h>
  9 b2cfc4e2 2003-09-30 devnull #include <sys/wait.h>
 10 b2cfc4e2 2003-09-30 devnull 
 11 b2cfc4e2 2003-09-30 devnull static struct {
 12 b2cfc4e2 2003-09-30 devnull 	int sig;
 13 b2cfc4e2 2003-09-30 devnull 	char *str;
 14 b2cfc4e2 2003-09-30 devnull } tab[] = {
 15 b2cfc4e2 2003-09-30 devnull 	SIGHUP,		"hangup",
 16 b2cfc4e2 2003-09-30 devnull 	SIGINT,		"interrupt",
 17 b2cfc4e2 2003-09-30 devnull 	SIGQUIT,		"quit",
 18 b2cfc4e2 2003-09-30 devnull 	SIGILL,		"sys: trap: illegal instruction",
 19 b2cfc4e2 2003-09-30 devnull 	SIGTRAP,		"sys: trace trap",
 20 b2cfc4e2 2003-09-30 devnull 	SIGABRT,		"sys: abort",
 21 d2c4ee9e 2003-11-24 devnull #ifdef SIGEMT
 22 b2cfc4e2 2003-09-30 devnull 	SIGEMT,		"sys: emulate instruction executed",
 23 d2c4ee9e 2003-11-24 devnull #endif
 24 b2cfc4e2 2003-09-30 devnull 	SIGFPE,		"sys: fp: trap",
 25 b2cfc4e2 2003-09-30 devnull 	SIGKILL,		"sys: kill",
 26 b2cfc4e2 2003-09-30 devnull 	SIGBUS,		"sys: bus error",
 27 b2cfc4e2 2003-09-30 devnull 	SIGSEGV,		"sys: segmentation violation",
 28 b2cfc4e2 2003-09-30 devnull 	SIGALRM,		"alarm",
 29 b2cfc4e2 2003-09-30 devnull 	SIGTERM,		"kill",
 30 b2cfc4e2 2003-09-30 devnull 	SIGURG,		"sys: urgent condition on socket",
 31 b2cfc4e2 2003-09-30 devnull 	SIGSTOP,		"sys: stop",
 32 b2cfc4e2 2003-09-30 devnull 	SIGTSTP,		"sys: tstp",
 33 b2cfc4e2 2003-09-30 devnull 	SIGCONT,		"sys: cont",
 34 b2cfc4e2 2003-09-30 devnull 	SIGCHLD,		"sys: child",
 35 b2cfc4e2 2003-09-30 devnull 	SIGTTIN,		"sys: ttin",
 36 b2cfc4e2 2003-09-30 devnull 	SIGTTOU,		"sys: ttou",
 37 b2cfc4e2 2003-09-30 devnull 	SIGIO,		"sys: i/o possible on fd",
 38 b2cfc4e2 2003-09-30 devnull 	SIGXCPU,		"sys: cpu time limit exceeded",
 39 b2cfc4e2 2003-09-30 devnull 	SIGXFSZ,		"sys: file size limit exceeded",
 40 b2cfc4e2 2003-09-30 devnull 	SIGVTALRM,	"sys: virtual time alarm",
 41 b2cfc4e2 2003-09-30 devnull 	SIGPROF,		"sys: profiling timer alarm",
 42 b2cfc4e2 2003-09-30 devnull 	SIGWINCH,	"sys: window size change",
 43 1c253ceb 2003-11-23 devnull #ifdef SIGINFO
 44 b2cfc4e2 2003-09-30 devnull 	SIGINFO,		"sys: status request",
 45 1c253ceb 2003-11-23 devnull #endif
 46 b2cfc4e2 2003-09-30 devnull 	SIGUSR1,		"sys: usr1",
 47 b2cfc4e2 2003-09-30 devnull 	SIGUSR2,		"sys: usr2",
 48 32f69c36 2003-12-11 devnull 	SIGPIPE,		"sys: write on closed pipe",
 49 b2cfc4e2 2003-09-30 devnull };
 50 b2cfc4e2 2003-09-30 devnull 	
 51 fd04aace 2003-11-23 devnull char*
 52 b2cfc4e2 2003-09-30 devnull _p9sigstr(int sig, char *tmp)
 53 b2cfc4e2 2003-09-30 devnull {
 54 b2cfc4e2 2003-09-30 devnull 	int i;
 55 b2cfc4e2 2003-09-30 devnull 
 56 b2cfc4e2 2003-09-30 devnull 	for(i=0; i<nelem(tab); i++)
 57 b2cfc4e2 2003-09-30 devnull 		if(tab[i].sig == sig)
 58 b2cfc4e2 2003-09-30 devnull 			return tab[i].str;
 59 3a9dccd7 2004-04-02 devnull 	if(tmp == nil)
 60 3a9dccd7 2004-04-02 devnull 		return nil;
 61 b2cfc4e2 2003-09-30 devnull 	sprint(tmp, "sys: signal %d", sig);
 62 b2cfc4e2 2003-09-30 devnull 	return tmp;
 63 b2cfc4e2 2003-09-30 devnull }
 64 b2cfc4e2 2003-09-30 devnull 
 65 fd04aace 2003-11-23 devnull int
 66 b2cfc4e2 2003-09-30 devnull _p9strsig(char *s)
 67 b2cfc4e2 2003-09-30 devnull {
 68 b2cfc4e2 2003-09-30 devnull 	int i;
 69 b2cfc4e2 2003-09-30 devnull 
 70 b2cfc4e2 2003-09-30 devnull 	for(i=0; i<nelem(tab); i++)
 71 b2cfc4e2 2003-09-30 devnull 		if(strcmp(s, tab[i].str) == 0)
 72 b2cfc4e2 2003-09-30 devnull 			return tab[i].sig;
 73 b2cfc4e2 2003-09-30 devnull 	return 0;
 74 b2cfc4e2 2003-09-30 devnull }
 75 b2cfc4e2 2003-09-30 devnull 
 76 5a8e63b2 2004-02-29 devnull static int
 77 5a8e63b2 2004-02-29 devnull _await(char *str, int n, int opt)
 78 b2cfc4e2 2003-09-30 devnull {
 79 b2cfc4e2 2003-09-30 devnull 	int pid, status, cd;
 80 b2cfc4e2 2003-09-30 devnull 	struct rusage ru;
 81 b2cfc4e2 2003-09-30 devnull 	char buf[128], tmp[64];
 82 b2cfc4e2 2003-09-30 devnull 	ulong u, s;
 83 b2cfc4e2 2003-09-30 devnull 
 84 b2cfc4e2 2003-09-30 devnull 	for(;;){
 85 5a8e63b2 2004-02-29 devnull 		pid = wait3(&status, opt, &ru);
 86 5a8e63b2 2004-02-29 devnull 		if(pid <= 0)
 87 b2cfc4e2 2003-09-30 devnull 			return -1;
 88 b2cfc4e2 2003-09-30 devnull 		u = ru.ru_utime.tv_sec*1000+((ru.ru_utime.tv_usec+500)/1000);
 89 b2cfc4e2 2003-09-30 devnull 		s = ru.ru_stime.tv_sec*1000+((ru.ru_stime.tv_usec+500)/1000);
 90 b2cfc4e2 2003-09-30 devnull 		if(WIFEXITED(status)){
 91 b2cfc4e2 2003-09-30 devnull 			status = WEXITSTATUS(status);
 92 b2cfc4e2 2003-09-30 devnull 			if(status)
 93 fd04aace 2003-11-23 devnull 				snprint(buf, sizeof buf, "%d %lud %lud %lud %d", pid, u, s, u+s, status);
 94 b2cfc4e2 2003-09-30 devnull 			else
 95 fd04aace 2003-11-23 devnull 				snprint(buf, sizeof buf, "%d %lud %lud %lud ''", pid, u, s, u+s, status);
 96 b2cfc4e2 2003-09-30 devnull 			strecpy(str, str+n, buf);
 97 b2cfc4e2 2003-09-30 devnull 			return strlen(str);
 98 b2cfc4e2 2003-09-30 devnull 		}
 99 b2cfc4e2 2003-09-30 devnull 		if(WIFSIGNALED(status)){
100 b2cfc4e2 2003-09-30 devnull 			cd = WCOREDUMP(status);
101 b2cfc4e2 2003-09-30 devnull 			USED(cd);
102 fd04aace 2003-11-23 devnull 			snprint(buf, sizeof buf, "%d %lud %lud %lud '%s'", pid, u, s, u+s, _p9sigstr(WTERMSIG(status), tmp));
103 b2cfc4e2 2003-09-30 devnull 			strecpy(str, str+n, buf);
104 b2cfc4e2 2003-09-30 devnull 			return strlen(str);
105 b2cfc4e2 2003-09-30 devnull 		}
106 b2cfc4e2 2003-09-30 devnull 	}
107 b2cfc4e2 2003-09-30 devnull }
108 5a8e63b2 2004-02-29 devnull 
109 5a8e63b2 2004-02-29 devnull int
110 5a8e63b2 2004-02-29 devnull await(char *str, int n)
111 5a8e63b2 2004-02-29 devnull {
112 5a8e63b2 2004-02-29 devnull 	return _await(str, n, 0);
113 5a8e63b2 2004-02-29 devnull }
114 5a8e63b2 2004-02-29 devnull 
115 5a8e63b2 2004-02-29 devnull int
116 5a8e63b2 2004-02-29 devnull awaitnohang(char *str, int n)
117 5a8e63b2 2004-02-29 devnull {
118 5a8e63b2 2004-02-29 devnull 	return _await(str, n, WNOHANG);
119 5a8e63b2 2004-02-29 devnull }
120 5a8e63b2 2004-02-29 devnull