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Code Issues Releases Activity

Check for duplicated PID without using additional variable.

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Sponsored by:	Fudo Security
This commit is contained in:
Pawel Jakub Dawidek 2020-01-26 10:51:57 +00:00
parent 532b3f4791
commit 3f50bbaf51
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=357139
1 changed files with 12 additions and 11 deletions
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23
bin/pwait/pwait.c
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@ -66,7 +66,7 @@ main(int argc, char *argv[])
int kq;
struct kevent *e;
int tflag, verbose;
int opt, nleft, n, i, duplicate, status;
int opt, nleft, n, i, status;
long pid;
char *s, *end;
double timeout;
@ -135,18 +135,19 @@ main(int argc, char *argv[])
warnx("%s: bad process id", s);
continue;
}
duplicate = 0;
for (i = 0; i < nleft; i++)
for (i = 0; i < nleft; i++) {
if (e[i].ident == (uintptr_t)pid)
duplicate = 1;
if (!duplicate) {
EV_SET(e + nleft, pid, EVFILT_PROC, EV_ADD, NOTE_EXIT,
0, NULL);
if (kevent(kq, e + nleft, 1, NULL, 0, NULL) == -1)
warn("%ld", pid);
else
nleft++;
break;
}
if (i < nleft) {
/* Duplicate. */
continue;
}
EV_SET(e + nleft, pid, EVFILT_PROC, EV_ADD, NOTE_EXIT, 0, NULL);
if (kevent(kq, e + nleft, 1, NULL, 0, NULL) == -1)
warn("%ld", pid);
else
nleft++;
}
if (tflag) {