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 a8ec4910 2005-07-13 devnull #include <sys/wait.h>
  8 912fba95 2003-11-24 devnull #include <sys/time.h>
  9 b2cfc4e2 2003-09-30 devnull #include <sys/resource.h>
 10 b2cfc4e2 2003-09-30 devnull 
 11 40ce5ba6 2005-05-01 devnull #ifndef WCOREDUMP	/* not on Mac OS X Tiger */
 12 40ce5ba6 2005-05-01 devnull #define WCOREDUMP(status) 0
 13 40ce5ba6 2005-05-01 devnull #endif
 14 40ce5ba6 2005-05-01 devnull 
 15 b2cfc4e2 2003-09-30 devnull static struct {
 16 b2cfc4e2 2003-09-30 devnull 	int sig;
 17 b2cfc4e2 2003-09-30 devnull 	char *str;
 18 b2cfc4e2 2003-09-30 devnull } tab[] = {
 19 b2cfc4e2 2003-09-30 devnull 	SIGHUP,		"hangup",
 20 b2cfc4e2 2003-09-30 devnull 	SIGINT,		"interrupt",
 21 b2cfc4e2 2003-09-30 devnull 	SIGQUIT,		"quit",
 22 b4223cd6 2005-01-04 devnull 	SIGILL,		"sys: illegal instruction",
 23 b4223cd6 2005-01-04 devnull 	SIGTRAP,		"sys: breakpoint",
 24 b2cfc4e2 2003-09-30 devnull 	SIGABRT,		"sys: abort",
 25 d2c4ee9e 2003-11-24 devnull #ifdef SIGEMT
 26 b2cfc4e2 2003-09-30 devnull 	SIGEMT,		"sys: emulate instruction executed",
 27 d2c4ee9e 2003-11-24 devnull #endif
 28 b2cfc4e2 2003-09-30 devnull 	SIGFPE,		"sys: fp: trap",
 29 b2cfc4e2 2003-09-30 devnull 	SIGKILL,		"sys: kill",
 30 b2cfc4e2 2003-09-30 devnull 	SIGBUS,		"sys: bus error",
 31 b2cfc4e2 2003-09-30 devnull 	SIGSEGV,		"sys: segmentation violation",
 32 b2cfc4e2 2003-09-30 devnull 	SIGALRM,		"alarm",
 33 b2cfc4e2 2003-09-30 devnull 	SIGTERM,		"kill",
 34 b2cfc4e2 2003-09-30 devnull 	SIGURG,		"sys: urgent condition on socket",
 35 b2cfc4e2 2003-09-30 devnull 	SIGSTOP,		"sys: stop",
 36 b2cfc4e2 2003-09-30 devnull 	SIGTSTP,		"sys: tstp",
 37 b2cfc4e2 2003-09-30 devnull 	SIGCONT,		"sys: cont",
 38 b2cfc4e2 2003-09-30 devnull 	SIGCHLD,		"sys: child",
 39 b2cfc4e2 2003-09-30 devnull 	SIGTTIN,		"sys: ttin",
 40 b2cfc4e2 2003-09-30 devnull 	SIGTTOU,		"sys: ttou",
 41 40ce5ba6 2005-05-01 devnull #ifdef SIGIO	/* not on Mac OS X Tiger */
 42 b2cfc4e2 2003-09-30 devnull 	SIGIO,		"sys: i/o possible on fd",
 43 40ce5ba6 2005-05-01 devnull #endif
 44 b2cfc4e2 2003-09-30 devnull 	SIGXCPU,		"sys: cpu time limit exceeded",
 45 b2cfc4e2 2003-09-30 devnull 	SIGXFSZ,		"sys: file size limit exceeded",
 46 b2cfc4e2 2003-09-30 devnull 	SIGVTALRM,	"sys: virtual time alarm",
 47 b2cfc4e2 2003-09-30 devnull 	SIGPROF,		"sys: profiling timer alarm",
 48 40ce5ba6 2005-05-01 devnull #ifdef SIGWINCH	/* not on Mac OS X Tiger */
 49 b2cfc4e2 2003-09-30 devnull 	SIGWINCH,	"sys: window size change",
 50 40ce5ba6 2005-05-01 devnull #endif
 51 1c253ceb 2003-11-23 devnull #ifdef SIGINFO
 52 b2cfc4e2 2003-09-30 devnull 	SIGINFO,		"sys: status request",
 53 1c253ceb 2003-11-23 devnull #endif
 54 b2cfc4e2 2003-09-30 devnull 	SIGUSR1,		"sys: usr1",
 55 b2cfc4e2 2003-09-30 devnull 	SIGUSR2,		"sys: usr2",
 56 32f69c36 2003-12-11 devnull 	SIGPIPE,		"sys: write on closed pipe",
 57 b2cfc4e2 2003-09-30 devnull };
 58 fa325e9b 2020-01-10 cross 
 59 fd04aace 2003-11-23 devnull char*
 60 b2cfc4e2 2003-09-30 devnull _p9sigstr(int sig, char *tmp)
 61 b2cfc4e2 2003-09-30 devnull {
 62 b2cfc4e2 2003-09-30 devnull 	int i;
 63 b2cfc4e2 2003-09-30 devnull 
 64 b2cfc4e2 2003-09-30 devnull 	for(i=0; i<nelem(tab); i++)
 65 b2cfc4e2 2003-09-30 devnull 		if(tab[i].sig == sig)
 66 b2cfc4e2 2003-09-30 devnull 			return tab[i].str;
 67 3a9dccd7 2004-04-02 devnull 	if(tmp == nil)
 68 3a9dccd7 2004-04-02 devnull 		return nil;
 69 b2cfc4e2 2003-09-30 devnull 	sprint(tmp, "sys: signal %d", sig);
 70 b2cfc4e2 2003-09-30 devnull 	return tmp;
 71 b2cfc4e2 2003-09-30 devnull }
 72 b2cfc4e2 2003-09-30 devnull 
 73 fd04aace 2003-11-23 devnull int
 74 b2cfc4e2 2003-09-30 devnull _p9strsig(char *s)
 75 b2cfc4e2 2003-09-30 devnull {
 76 b2cfc4e2 2003-09-30 devnull 	int i;
 77 b2cfc4e2 2003-09-30 devnull 
 78 b2cfc4e2 2003-09-30 devnull 	for(i=0; i<nelem(tab); i++)
 79 b2cfc4e2 2003-09-30 devnull 		if(strcmp(s, tab[i].str) == 0)
 80 b2cfc4e2 2003-09-30 devnull 			return tab[i].sig;
 81 b2cfc4e2 2003-09-30 devnull 	return 0;
 82 b2cfc4e2 2003-09-30 devnull }
 83 b2cfc4e2 2003-09-30 devnull 
 84 5a8e63b2 2004-02-29 devnull static int
 85 03417610 2004-12-27 devnull _await(int pid4, char *str, int n, int opt)
 86 b2cfc4e2 2003-09-30 devnull {
 87 b2cfc4e2 2003-09-30 devnull 	int pid, status, cd;
 88 b2cfc4e2 2003-09-30 devnull 	struct rusage ru;
 89 b2cfc4e2 2003-09-30 devnull 	char buf[128], tmp[64];
 90 b2cfc4e2 2003-09-30 devnull 	ulong u, s;
 91 b2cfc4e2 2003-09-30 devnull 
 92 b2cfc4e2 2003-09-30 devnull 	for(;;){
 93 005a85f3 2005-01-07 devnull 		/* On Linux, pid==-1 means anyone; on SunOS, it's pid==0. */
 94 005a85f3 2005-01-07 devnull 		if(pid4 == -1)
 95 005a85f3 2005-01-07 devnull 			pid = wait3(&status, opt, &ru);
 96 005a85f3 2005-01-07 devnull 		else
 97 005a85f3 2005-01-07 devnull 			pid = wait4(pid4, &status, opt, &ru);
 98 5a8e63b2 2004-02-29 devnull 		if(pid <= 0)
 99 b2cfc4e2 2003-09-30 devnull 			return -1;
100 b2cfc4e2 2003-09-30 devnull 		u = ru.ru_utime.tv_sec*1000+((ru.ru_utime.tv_usec+500)/1000);
101 b2cfc4e2 2003-09-30 devnull 		s = ru.ru_stime.tv_sec*1000+((ru.ru_stime.tv_usec+500)/1000);
102 b2cfc4e2 2003-09-30 devnull 		if(WIFEXITED(status)){
103 b2cfc4e2 2003-09-30 devnull 			status = WEXITSTATUS(status);
104 b2cfc4e2 2003-09-30 devnull 			if(status)
105 fd04aace 2003-11-23 devnull 				snprint(buf, sizeof buf, "%d %lud %lud %lud %d", pid, u, s, u+s, status);
106 b2cfc4e2 2003-09-30 devnull 			else
107 fd04aace 2003-11-23 devnull 				snprint(buf, sizeof buf, "%d %lud %lud %lud ''", pid, u, s, u+s, status);
108 b2cfc4e2 2003-09-30 devnull 			strecpy(str, str+n, buf);
109 b2cfc4e2 2003-09-30 devnull 			return strlen(str);
110 b2cfc4e2 2003-09-30 devnull 		}
111 b2cfc4e2 2003-09-30 devnull 		if(WIFSIGNALED(status)){
112 b2cfc4e2 2003-09-30 devnull 			cd = WCOREDUMP(status);
113 99834d13 2004-10-22 devnull 			snprint(buf, sizeof buf, "%d %lud %lud %lud 'signal: %s%s'", pid, u, s, u+s, _p9sigstr(WTERMSIG(status), tmp), cd ? " (core dumped)" : "");
114 b2cfc4e2 2003-09-30 devnull 			strecpy(str, str+n, buf);
115 b2cfc4e2 2003-09-30 devnull 			return strlen(str);
116 b2cfc4e2 2003-09-30 devnull 		}
117 b2cfc4e2 2003-09-30 devnull 	}
118 b2cfc4e2 2003-09-30 devnull }
119 5a8e63b2 2004-02-29 devnull 
120 5a8e63b2 2004-02-29 devnull int
121 5a8e63b2 2004-02-29 devnull await(char *str, int n)
122 5a8e63b2 2004-02-29 devnull {
123 03417610 2004-12-27 devnull 	return _await(-1, str, n, 0);
124 5a8e63b2 2004-02-29 devnull }
125 5a8e63b2 2004-02-29 devnull 
126 5a8e63b2 2004-02-29 devnull int
127 5a8e63b2 2004-02-29 devnull awaitnohang(char *str, int n)
128 5a8e63b2 2004-02-29 devnull {
129 03417610 2004-12-27 devnull 	return _await(-1, str, n, WNOHANG);
130 5a8e63b2 2004-02-29 devnull }
131 5a8e63b2 2004-02-29 devnull 
132 03417610 2004-12-27 devnull int
133 03417610 2004-12-27 devnull awaitfor(int pid, char *str, int n)
134 03417610 2004-12-27 devnull {
135 03417610 2004-12-27 devnull 	return _await(pid, str, n, 0);
136 03417610 2004-12-27 devnull }