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From:   Namjae Jeon <linkinjeon@kernel.org>
Date:   Fri, 19 Aug 2022 08:26:55 +0900
Message-ID: <CAKYAXd-6fT5qG2VmVG6Q51Z8-_79cjKhERHDatR_z62w19+p1Q@mail.gmail.com>
Subject: Re: [PATCH 4/5] ksmbd: don't open-code %pf
To:     Al Viro <viro@zeniv.linux.org.uk>
Cc:     linux-fsdevel@vger.kernel.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        CIFS <linux-cifs@vger.kernel.org>
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2022-08-19 5:35 GMT+09:00, Al Viro <viro@zeniv.linux.org.uk>:
> On Thu, Aug 18, 2022 at 03:08:36PM +0900, Namjae Jeon wrote:
>> 2022-08-18 11:59 GMT+09:00, Al Viro <viro@zeniv.linux.org.uk>:
>> > Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
>> > ---
>> >  fs/ksmbd/vfs.c | 4 ++--
>> >  1 file changed, 2 insertions(+), 2 deletions(-)
>> >
>> > diff --git a/fs/ksmbd/vfs.c b/fs/ksmbd/vfs.c
>> > index 78d01033604c..a0fafba8b5d0 100644
>> > --- a/fs/ksmbd/vfs.c
>> > +++ b/fs/ksmbd/vfs.c
>> > @@ -1743,11 +1743,11 @@ int ksmbd_vfs_copy_file_ranges(struct
>> > ksmbd_work
>> > *work,
>> >  	*total_size_written = 0;
>> >
>> >  	if (!(src_fp->daccess & (FILE_READ_DATA_LE | FILE_EXECUTE_LE))) {
>> > -		pr_err("no right to read(%pd)\n", src_fp->filp->f_path.dentry);
>> > +		pr_err("no right to read(%pf)\n", src_fp->filp);
>> Isn't this probably %pD?
>
> *blink*
>
> It certainly is; thanks for catching that braino...  While we are at it,
> there's several more places of the same form these days, so fixed and
> updated variant follows:
Thanks for updating the patch!
>
> ksmbd: don't open-code %pD
>
> a bunch of places used %pd with file->f_path.dentry; shorter (and saner)
> way to spell that is %pD with file...
>
> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>

Thanks!
> ---
>
> diff --git a/fs/ksmbd/smb2pdu.c b/fs/ksmbd/smb2pdu.c
> index 0e1924a6476d..bed670410c37 100644
> --- a/fs/ksmbd/smb2pdu.c
> +++ b/fs/ksmbd/smb2pdu.c
> @@ -3897,8 +3897,7 @@ int smb2_query_dir(struct ksmbd_work *work)
>  	    inode_permission(file_mnt_user_ns(dir_fp->filp),
>  			     file_inode(dir_fp->filp),
>  			     MAY_READ | MAY_EXEC)) {
> -		pr_err("no right to enumerate directory (%pd)\n",
> -		       dir_fp->filp->f_path.dentry);
> +		pr_err("no right to enumerate directory (%pD)\n", dir_fp->filp);
>  		rc = -EACCES;
>  		goto err_out2;
>  	}
> @@ -6269,8 +6268,8 @@ int smb2_read(struct ksmbd_work *work)
>  		goto out;
>  	}
>
> -	ksmbd_debug(SMB, "filename %pd, offset %lld, len %zu\n",
> -		    fp->filp->f_path.dentry, offset, length);
> +	ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n",
> +		    fp->filp, offset, length);
>
>  	work->aux_payload_buf = kvmalloc(length, GFP_KERNEL | __GFP_ZERO);
>  	if (!work->aux_payload_buf) {
> @@ -6534,8 +6533,8 @@ int smb2_write(struct ksmbd_work *work)
>  		data_buf = (char *)(((char *)&req->hdr.ProtocolId) +
>  				    le16_to_cpu(req->DataOffset));
>
> -		ksmbd_debug(SMB, "filename %pd, offset %lld, len %zu\n",
> -			    fp->filp->f_path.dentry, offset, length);
> +		ksmbd_debug(SMB, "filename %pD, offset %lld, len %zu\n",
> +			    fp->filp, offset, length);
>  		err = ksmbd_vfs_write(work, fp, data_buf, length, &offset,
>  				      writethrough, &nbytes);
>  		if (err < 0)
> diff --git a/fs/ksmbd/vfs.c b/fs/ksmbd/vfs.c
> index 78d01033604c..0c04a59cbe60 100644
> --- a/fs/ksmbd/vfs.c
> +++ b/fs/ksmbd/vfs.c
> @@ -377,8 +377,7 @@ int ksmbd_vfs_read(struct ksmbd_work *work, struct
> ksmbd_file *fp, size_t count,
>
>  	if (work->conn->connection_type) {
>  		if (!(fp->daccess & (FILE_READ_DATA_LE | FILE_EXECUTE_LE))) {
> -			pr_err("no right to read(%pd)\n",
> -			       fp->filp->f_path.dentry);
> +			pr_err("no right to read(%pD)\n", fp->filp);
>  			return -EACCES;
>  		}
>  	}
> @@ -487,8 +486,7 @@ int ksmbd_vfs_write(struct ksmbd_work *work, struct
> ksmbd_file *fp,
>
>  	if (work->conn->connection_type) {
>  		if (!(fp->daccess & FILE_WRITE_DATA_LE)) {
> -			pr_err("no right to write(%pd)\n",
> -			       fp->filp->f_path.dentry);
> +			pr_err("no right to write(%pD)\n", fp->filp);
>  			err = -EACCES;
>  			goto out;
>  		}
> @@ -527,8 +525,8 @@ int ksmbd_vfs_write(struct ksmbd_work *work, struct
> ksmbd_file *fp,
>  	if (sync) {
>  		err = vfs_fsync_range(filp, offset, offset + *written, 0);
>  		if (err < 0)
> -			pr_err("fsync failed for filename = %pd, err = %d\n",
> -			       fp->filp->f_path.dentry, err);
> +			pr_err("fsync failed for filename = %pD, err = %d\n",
> +			       fp->filp, err);
>  	}
>
>  out:
> @@ -1743,11 +1741,11 @@ int ksmbd_vfs_copy_file_ranges(struct ksmbd_work
> *work,
>  	*total_size_written = 0;
>
>  	if (!(src_fp->daccess & (FILE_READ_DATA_LE | FILE_EXECUTE_LE))) {
> -		pr_err("no right to read(%pd)\n", src_fp->filp->f_path.dentry);
> +		pr_err("no right to read(%pD)\n", src_fp->filp);
>  		return -EACCES;
>  	}
>  	if (!(dst_fp->daccess & (FILE_WRITE_DATA_LE | FILE_APPEND_DATA_LE))) {
> -		pr_err("no right to write(%pd)\n", dst_fp->filp->f_path.dentry);
> +		pr_err("no right to write(%pD)\n", dst_fp->filp);
>  		return -EACCES;
>  	}
>
>