----- Original Message -----
> From: "Zeng Linggang" <zenglg...@cn.fujitsu.com>
> To: "ltp-list" <ltp-list@lists.sourceforge.net>
> Sent: Tuesday, 22 April, 2014 11:41:00 AM
> Subject: [LTP] [PATCH 2/2] sbrk/sbrk02.c: add ENOMEM errno test
>
> Add ENOMEM errno test for sbrk(2)
>
> Signed-off-by: Zeng Linggang <zenglg...@cn.fujitsu.com>
> ---
> runtest/ltplite | 1 +
> runtest/stress.part3 | 1 +
> runtest/syscalls | 1 +
> testcases/kernel/syscalls/.gitignore | 1 +
> testcases/kernel/syscalls/sbrk/sbrk02.c | 102
> ++++++++++++++++++++++++++++++++
> 5 files changed, 106 insertions(+)
> create mode 100644 testcases/kernel/syscalls/sbrk/sbrk02.c
>
Hi,
<snip>
> diff --git a/testcases/kernel/syscalls/sbrk/sbrk02.c
> b/testcases/kernel/syscalls/sbrk/sbrk02.c
> new file mode 100644
> index 0000000..97b41d9
> --- /dev/null
> +++ b/testcases/kernel/syscalls/sbrk/sbrk02.c
> @@ -0,0 +1,102 @@
> +/*
> + * Copyright (c) 2014 Fujitsu Ltd.
> + * Author: Zeng Linggang <zenglg...@cn.fujitsu.com>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of version 2 of the GNU General Public License as
> + * published by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it would be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
> + *
> + * You should have received a copy of the GNU General Public License along
> + * with this program; if not, write the Free Software Foundation, Inc.,
> + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
> + */
> +/*
> + * DESCRIPTION
> + * Check sbrk() with error condition that should produce ENOMEM.
> + */
> +
> +#include <errno.h>
> +#include <unistd.h>
> +#include "test.h"
> +#include "usctest.h"
> +
> +char *TCID = "sbrk02";
> +int TST_TOTAL = 1;
> +
> +static void setup(void);
> +static void sbrk_verify(void);
> +static void cleanup(void);
> +static int exp_enos[] = { ENOMEM, 0 };
> +
> +static long increment;
> +
> +int main(int argc, char *argv[])
> +{
> + int lc;
> + int i;
> + char *msg;
> +
> + msg = parse_opts(argc, argv, NULL, NULL);
> + if (msg != NULL)
> + tst_brkm(TBROK, NULL, "OPTION PARSING ERROR - %s", msg);
> +
> + setup();
> +
> + for (lc = 0; TEST_LOOPING(lc); lc++) {
> + tst_count = 0;
> + for (i = 0; i < TST_TOTAL; i++)
> + sbrk_verify();
> + }
> +
> + cleanup();
> + tst_exit();
> +}
> +
> +static void setup(void)
> +{
> + tst_sig(NOFORK, DEF_HANDLER, cleanup);
> +
> + TEST_PAUSE;
> +
> + for (increment = 0; errno == 0; increment++)
This looks like it takes couple hundred thousand of syscalls to hit
the limit. I'd suggest to set initial increment value somewhere
in range 1M-16M to reach it faster.
sbrk01 test is not suitable for UCLINUX, I suggest we add same ifdef check to
sbrk02.
Regards,
Jan
> + sbrk(increment);
> +
> + errno = 0;
> +
> + TEST_EXP_ENOS(exp_enos);
> +}
> +
> +static void sbrk_verify(void)
> +{
> + void *tret;
> +
> + tret = sbrk(increment);
> + TEST_ERRNO = errno;
> +
> + if (tret != (void *)-1) {
> + tst_resm(TFAIL,
> + "sbrk(%ld) returned %p, expected (void *)-1, errno=%d",
> + increment, tret, ENOMEM);
> + return;
> + }
> +
> + TEST_ERROR_LOG(TEST_ERRNO);
> +
> + if (TEST_ERRNO == ENOMEM) {
> + tst_resm(TPASS | TTERRNO, "sbrk(%ld) failed as expected",
> + increment);
> + } else {
> + tst_resm(TFAIL | TTERRNO,
> + "sbrk(%ld) failed unexpectedly; expected: %d - %s",
> + increment, ENOMEM, strerror(ENOMEM));
> + }
> +}
> +
> +static void cleanup(void)
> +{
> + TEST_CLEANUP;
> +}
> --
> 1.8.4.2
>
>
>
>
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