linux-kernel - Re: linux-next: manual merge of the compat tree with the tree

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Message-ID: <20140314184347.GY366@sirena.org.uk>
Date:	Fri, 14 Mar 2014 18:43:47 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Heiko Carstens <heiko.carstens@...ibm.com>,
	"H. Peter Anvin" <hpa@...ux.intel.com>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: linux-next: manual merge of the compat tree with the  tree

On Fri, Mar 14, 2014 at 06:36:53PM +0000, Mark Brown wrote:

> Today's linux-next merge of the compat tree got a conflict in  between
> commit 81993e81a99 ("compat: Get rid of
> (get|put)_compat_time(val|spec)") from the tip tree and commit
> 932602e23832 ("fs/compat: convert to COMPAT_SYSCALL_DEFINE with
> changing parameter types") from the compat tree.

> I fixed it up (see below) and can carry the fix as necessary (no action
> is required).

And essentially the same thing in ipc/compat_mq.c:

diff --cc ipc/compat_mq.c
index a9cf16378d7a,d58747293772..000000000000
--- a/ipc/compat_mq.c
+++ b/ipc/compat_mq.c
@@@ -64,10 -64,24 +64,10 @@@ COMPAT_SYSCALL_DEFINE4(mq_open, const c
  	return sys_mq_open(u_name, oflag, mode, p);
  }
  
- asmlinkage long compat_sys_mq_timedsend(mqd_t mqdes,
- 			const char __user *u_msg_ptr,
- 			size_t msg_len, unsigned int msg_prio,
- 			const struct compat_timespec __user *u_abs_timeout)
 -static int compat_prepare_timeout(struct timespec __user **p,
 -				  const struct compat_timespec __user *u)
 -{
 -	struct timespec ts;
 -	if (!u) {
 -		*p = NULL;
 -		return 0;
 -	}
 -	*p = compat_alloc_user_space(sizeof(ts));
 -	if (get_compat_timespec(&ts, u) || copy_to_user(*p, &ts, sizeof(ts)))
 -		return -EFAULT;
 -	return 0;
 -}
 -
+ COMPAT_SYSCALL_DEFINE5(mq_timedsend, mqd_t, mqdes,
+ 		       const char __user *, u_msg_ptr,
+ 		       compat_size_t, msg_len, unsigned int, msg_prio,
+ 		       const struct compat_timespec __user *, u_abs_timeout)
  {
  	struct timespec __user *u_ts;
  
@@@ -78,14 -92,13 +78,14 @@@
  			msg_prio, u_ts);
  }
  
- asmlinkage ssize_t compat_sys_mq_timedreceive(mqd_t mqdes,
- 			char __user *u_msg_ptr,
- 			size_t msg_len, unsigned int __user *u_msg_prio,
- 			const struct compat_timespec __user *u_abs_timeout)
+ COMPAT_SYSCALL_DEFINE5(mq_timedreceive, mqd_t, mqdes,
+ 		       char __user *, u_msg_ptr,
+ 		       compat_size_t, msg_len, unsigned int __user *, u_msg_prio,
+ 		       const struct compat_timespec __user *, u_abs_timeout)
  {
  	struct timespec __user *u_ts;
 -	if (compat_prepare_timeout(&u_ts, u_abs_timeout))
 +
 +	if (compat_convert_timespec(&u_ts, u_abs_timeout))
  		return -EFAULT;
  
  	return sys_mq_timedreceive(mqdes, u_msg_ptr, msg_len,

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