1#include <fcntl.h>
2#include <stdio.h>
3
4int main(int argc, char *argv[])
5{
6	int pid = atoi(argv[1]);
7	int sfd;
8	char sname[32];
9	char buf[1024];
10	char *s;
11	int i;
12	int signal, blocked, ignore, caught;
13
14	sprintf(sname, "/proc/%d/stat", pid);
15
16	sfd = open(sname, O_RDONLY);
17	if (sfd == -1) {
18		perror(sname);
19		return 1;
20	}
21
22	i = read(sfd, buf, 1024);
23	buf[i] = '\0';
24
25	for (i = 0, s = buf; i < 30; i++) {
26		while (*++s != ' ') {
27			if (!*s)
28				break;
29		}
30	}
31
32	if (sscanf(s, "%d%d%d%d", &signal, &blocked, &ignore, &caught) != 4) {
33		fprintf(stderr, "/proc/pid/stat format error\n");
34		return 1;
35	}
36
37	printf("%8x %8x %8x %8x\n", signal, blocked, ignore, caught);
38
39	return 0;
40}
41