Hi!
> +int main(int ac, char **av)
> +{
> + int lc, ret;
> + char *msg;
> +
> + msg = parse_opts(ac, av, NULL, NULL);
> + if (msg != NULL)
> + tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
> +/*
> + * Tested on ppc64/x86_64/i386/s390x. And only 64bit has this issue.
> + * Since a 32bit program can't mmap so many memory.
> + */
> +#if __WORDSIZE == 32
> + tst_brkm(TCONF, NULL, "This test is only for 64bit.");
> +#endif
> + setup();
> + for (lc = 0; TEST_LOOPING(lc); lc++) {
> + tst_count = 0;
> +
> + ret = fork_test();
> + if (ret == 0)
> + tst_resm(TPASS, "fork failed as expected.");
> + }
> + cleanup();
> + tst_exit();
> +}
> +
> +static void setup(void)
> +{
> + tst_sig(FORK, DEF_HANDLER, cleanup);
> + TEST_PAUSE;
> +}
> +
> +static void cleanup(void)
> +{
> + TEST_CLEANUP;
> +}
> +
> +static int fork_test(void)
> +{
> + int i, ret = 0;
> + void *addr;
> +
> + for (i = 0; i < EXTENT; i++) {
> + addr = mmap(NULL, (size_t) 1 * GB, PROT_READ | PROT_WRITE,
^
Why do you multiply the size by 1
casted to (size_t) that does not make
much sense.
> + MAP_PRIVATE | MAP_ANONYMOUS, 0, 0);
> + if (addr == MAP_FAILED)
> + tst_brkm(TBROK|TERRNO, cleanup, "mmap");
I wonder if this should be really TBROK. This
could easily fail with ENOMEM if you turn off
memory overcommit and you machine does not have
enough RAM.
> + switch (fork()) {
> + case -1:
> + break;
> + case 0:
> + exit(0);
> + default:
> + if (waitpid(-1, NULL, 0) == -1)
> + tst_brkm(TBROK|TERRNO,
> + cleanup, "waitpid");
> +
> + if (i >= LARGE) {
> + tst_brkm(TFAIL, NULL,
> + "Fork succeeds incorrectly");
> + ret++;
> + }
> + }
> + }
> + return ret;
> +}
--
Cyril Hrubis
[email protected]
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