linux-kernel - Re: [PATCH] hfs: Change structure initialisation to C99 style

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Date:	Wed, 22 Jun 2016 10:32:16 -0700
From:	Viacheslav Dubeyko <slava@...eyko.com>
To:	Amitoj Kaur Chawla <amitoj1606@...il.com>
Cc:	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	julia.lawall@...6.fr, michael.leibowitz@...el.com,
	keescook@...omium.org
Subject: Re: [PATCH] hfs: Change structure initialisation to C99 style

On Wed, 2016-06-22 at 11:04 +0530, Amitoj Kaur Chawla wrote:
> To allow for structure randomisation, replace the in order
> struct initialisation style with explicit field style.
> Also, remove an unnecessary initialisation since NULL values do not
> need to be explicitly initialised.
> 
> The Coccinelle semantic patch used to make this change is as follows:
> 

Looks reasonable.

Reviewed-by: Vyacheslav Dubeyko <slava@...eyko.com>

Thanks,
Vyacheslav Dubeyko.


> @decl@
> identifier i1,fld;
> type T;
> field list[n] fs;
> @@
> 
> struct i1 {
>  fs
>  T fld;
>  ...};
> 
> @@
> identifier decl.i1,i2,decl.fld;
> expression e;
> position bad.p, bad.fix;
> @@
> 
> struct i1 i2@p = { ...,
> + .fld = e
> - e@fix
>  ,...};
> 
> Signed-off-by: Amitoj Kaur Chawla <amitoj1606@...il.com>
> ---
>  fs/hfs/inode.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
> index cb1e5fa..29fc0ea 100644
> --- a/fs/hfs/inode.c
> +++ b/fs/hfs/inode.c
> @@ -380,7 +380,7 @@ static int hfs_read_inode(struct inode *inode, void *data)
>   */
>  struct inode *hfs_iget(struct super_block *sb, struct hfs_cat_key *key, hfs_cat_rec *rec)
>  {
> -	struct hfs_iget_data data = { key, rec };
> +	struct hfs_iget_data data = { .key = key, .rec = rec };
>  	struct inode *inode;
>  	u32 cnid;
>  
> @@ -527,7 +527,7 @@ static struct dentry *hfs_file_lookup(struct inode *dir, struct dentry *dentry,
>  	fd.search_key->cat = HFS_I(dir)->cat_key;
>  	res = hfs_brec_read(&fd, &rec, sizeof(rec));
>  	if (!res) {
> -		struct hfs_iget_data idata = { NULL, &rec };
> +		struct hfs_iget_data idata = { .rec = &rec };
>  		hfs_read_inode(inode, &idata);
>  	}
>  	hfs_find_exit(&fd);