From: Caspar Zhang <caspar@casparzhang.com>
To: Monson Shao <jshao@redhat.com>
Cc: ltp-list@lists.sourceforge.net
Subject: Re: [LTP] [PATCH] pidns30 pidns31: syscall mq_open() failed EFAULT(Bad address)
Date: Tue, 25 Dec 2012 15:42:02 +0800 [thread overview]
Message-ID: <50D958CA.4010406@casparzhang.com> (raw)
In-Reply-To: <1356420335-4204-1-git-send-email-jshao@redhat.com>
On 12/25/2012 03:25 PM, Monson Shao wrote:
> 'man 3 mq_open' said mq_open() can take 2 or 4 arguments, but the implement
> syscall(__NR_mq_open, ...) takes 4, according to [1].
>
> Manually tested on kernel-3.6.0 with glibc-2.16 .
>
> [1] glibc/sysdeps/unix/sysv/linux/mq_open.c:55
will this change the result on old kernel/glibc?
Caspar
>
> Signed-off-by: Monson Shao <jshao@redhat.com>
> ---
> testcases/kernel/containers/pidns/pidns30.c | 2 +-
> testcases/kernel/containers/pidns/pidns31.c | 2 +-
> 2 个文件被修改，插入 2 行(+)，删除 2 行(-)
>
> diff --git a/testcases/kernel/containers/pidns/pidns30.c b/testcases/kernel/containers/pidns/pidns30.c
> index 71e87c1..75c736b 100644
> --- a/testcases/kernel/containers/pidns/pidns30.c
> +++ b/testcases/kernel/containers/pidns/pidns30.c
> @@ -186,7 +186,7 @@ int child_fn(void *arg)
> while (read(father_to_child[0], buf, 1) != 1)
> sleep(1);
>
> - mqd = syscall(__NR_mq_open, mqname, O_RDONLY);
> + mqd = syscall(__NR_mq_open, mqname, O_RDONLY, 0, NULL);
> if (mqd == -1) {
> perror("mq_open failed");
> return 1;
> diff --git a/testcases/kernel/containers/pidns/pidns31.c b/testcases/kernel/containers/pidns/pidns31.c
> index 2a07489..1498d16 100644
> --- a/testcases/kernel/containers/pidns/pidns31.c
> +++ b/testcases/kernel/containers/pidns/pidns31.c
> @@ -177,7 +177,7 @@ int child_fn(void *arg)
> }
> tst_resm(TINFO, "cinit: my father is ready to receive a message");
>
> - mqd = syscall(__NR_mq_open, mqname, O_WRONLY);
> + mqd = syscall(__NR_mq_open, mqname, O_WRONLY, 0, NULL);
> if (mqd == (mqd_t) - 1) {
> tst_resm(TBROK, "cinit: mq_open() failed (%s)",
> strerror(errno));
>
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next prev parent reply other threads:[~2012-12-25 7:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-25 7:25 [LTP] [PATCH] pidns30 pidns31: syscall mq_open() failed EFAULT(Bad address) Monson Shao
2012-12-25 7:42 ` Caspar Zhang [this message]
2012-12-25 11:23 ` Monson Shao
2012-12-26 2:57 ` Caspar Zhang
2012-12-26 3:37 ` Wanlong Gao
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