linux-kernel - Re: [PATCH 1/2] CRED: Alter XFS so as to avoid namespace collisions with upcoming COW creds

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Message-ID: <alpine.LRH.1.10.0808130854290.17839@tundra.namei.org>
Date:	Wed, 13 Aug 2008 08:55:10 +1000 (EST)
From:	James Morris <jmorris@...ei.org>
To:	David Howells <dhowells@...hat.com>
cc:	Stephen Rothwell <sfr@...b.auug.org.au>,
	Christoph Hellwig <hch@...radead.org>,
	"David S. Miller" <davem@...emloft.net>, sfrench@...ibm.com,
	linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, xfs@....sgi.com
Subject: Re: [PATCH 1/2] CRED: Alter XFS so as to avoid namespace collisions
 with upcoming COW creds

On Tue, 12 Aug 2008, David Howells wrote:

> Rename XFS's current_fsuid() and current_fsgid() to avoid collision with
> functions of the same name in upcoming COW creds.
> 
> Signed-off-by: David Howells <dhowells@...hat.com>

Can we get an acked-by from an XFS maintainer before pushing this to 
Linus?

> ---
> 
>  fs/xfs/linux-2.6/xfs_linux.h |    4 ++--
>  fs/xfs/xfs_inode.c           |    4 ++--
>  fs/xfs/xfs_vnodeops.c        |    8 ++++----
>  3 files changed, 8 insertions(+), 8 deletions(-)
> 
> 
> diff --git a/fs/xfs/linux-2.6/xfs_linux.h b/fs/xfs/linux-2.6/xfs_linux.h
> index 4d45d93..05a2e7e 100644
> --- a/fs/xfs/linux-2.6/xfs_linux.h
> +++ b/fs/xfs/linux-2.6/xfs_linux.h
> @@ -126,8 +126,8 @@
>  
>  #define current_cpu()		(raw_smp_processor_id())
>  #define current_pid()		(current->pid)
> -#define current_fsuid(cred)	(current->fsuid)
> -#define current_fsgid(cred)	(current->fsgid)
> +#define this_fsuid(cred)	(current->fsuid)
> +#define this_fsgid(cred)	(current->fsgid)
>  #define current_test_flags(f)	(current->flags & (f))
>  #define current_set_flags_nested(sp, f)		\
>  		(*(sp) = current->flags, current->flags |= (f))
> diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
> index bedc661..5e481ae 100644
> --- a/fs/xfs/xfs_inode.c
> +++ b/fs/xfs/xfs_inode.c
> @@ -1082,8 +1082,8 @@ xfs_ialloc(
>  	ip->i_d.di_onlink = 0;
>  	ip->i_d.di_nlink = nlink;
>  	ASSERT(ip->i_d.di_nlink == nlink);
> -	ip->i_d.di_uid = current_fsuid(cr);
> -	ip->i_d.di_gid = current_fsgid(cr);
> +	ip->i_d.di_uid = this_fsuid(cr);
> +	ip->i_d.di_gid = this_fsgid(cr);
>  	ip->i_d.di_projid = prid;
>  	memset(&(ip->i_d.di_pad[0]), 0, sizeof(ip->i_d.di_pad));
>  
> diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
> index 76a1166..3dfe8a0 100644
> --- a/fs/xfs/xfs_vnodeops.c
> +++ b/fs/xfs/xfs_vnodeops.c
> @@ -182,7 +182,7 @@ xfs_setattr(
>  	xfs_ilock(ip, lock_flags);
>  
>  	/* boolean: are we the file owner? */
> -	file_owner = (current_fsuid(credp) == ip->i_d.di_uid);
> +	file_owner = (this_fsuid(credp) == ip->i_d.di_uid);
>  
>  	/*
>  	 * Change various properties of a file.
> @@ -1536,7 +1536,7 @@ xfs_create(
>  	 * Make sure that we have allocated dquot(s) on disk.
>  	 */
>  	error = XFS_QM_DQVOPALLOC(mp, dp,
> -			current_fsuid(credp), current_fsgid(credp), prid,
> +			this_fsuid(credp), this_fsgid(credp), prid,
>  			XFS_QMOPT_QUOTALL|XFS_QMOPT_INHERIT, &udqp, &gdqp);
>  	if (error)
>  		goto std_return;
> @@ -2352,7 +2352,7 @@ xfs_mkdir(
>  	 * Make sure that we have allocated dquot(s) on disk.
>  	 */
>  	error = XFS_QM_DQVOPALLOC(mp, dp,
> -			current_fsuid(credp), current_fsgid(credp), prid,
> +			this_fsuid(credp), this_fsgid(credp), prid,
>  			XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT, &udqp, &gdqp);
>  	if (error)
>  		goto std_return;
> @@ -2578,7 +2578,7 @@ xfs_symlink(
>  	 * Make sure that we have allocated dquot(s) on disk.
>  	 */
>  	error = XFS_QM_DQVOPALLOC(mp, dp,
> -			current_fsuid(credp), current_fsgid(credp), prid,
> +			this_fsuid(credp), this_fsgid(credp), prid,
>  			XFS_QMOPT_QUOTALL | XFS_QMOPT_INHERIT, &udqp, &gdqp);
>  	if (error)
>  		goto std_return;
> 

-- 
James Morris
<jmorris@...ei.org>
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