1 #include <fcntl.h>
2 #include <stdio.h>
3
main(int argc,char * argv[])4 int 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