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zdtm: Fix fd01 cleanup

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waitpid() does not return child pid, when child has not exited.
So, we can't use it to find pids of children.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
This commit is contained in:
Kirill Tkhai 2018-02-01 17:54:12 +03:00 committed by Andrei Vagin
parent f48bf9825f
commit 4fe32e5d44
1 changed files with 15 additions and 4 deletions
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19
test/zdtm/static/fd01.c
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@ -22,11 +22,19 @@ int main(int argc, char **argv)
unsigned int i, max_nr, flags;
int fd, status, ret;
struct rlimit rlim;
futex_t *futex;
char buf[16];
pid_t pid;
test_init(argc, argv);
futex = mmap(NULL, sizeof(*futex), PROT_WRITE | PROT_READ, MAP_ANONYMOUS|MAP_SHARED, -1, 0);
if (futex == MAP_FAILED) {
fail("mmap");
exit(1);
}
futex_init(futex);
fd = open("/proc/sys/fs/nr_open", O_RDONLY);
if (fd < 0) {
fail("Can't open /proc/sys/fs/nr_open");
@ -86,7 +94,7 @@ int main(int argc, char **argv)
fail("fork");
exit(1);
} else if (!pid) {
pause();
futex_wait_while(futex, 0);
exit(0);
}
}
@ -95,9 +103,12 @@ int main(int argc, char **argv)
test_waitsig();
/* Cleanup */
while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
if (kill(pid, SIGTERM) == 0)
waitpid(-1, &status, 0); /* Ignore errors */
futex_set_and_wake(futex, 1);
while (wait(&status) > 0) {
if (!WIFEXITED(status) || WEXITSTATUS(status)) {
fail("Wrong exit status: %d", status);
exit(1);
}
}
pass();