On Wednesday, January 29, 2020 10:32 PM Christoph Hellwig wrote:
> Merge the ioctl handlers just like the low-level xfs_attr_set function.
>
The newly introduced changes match with the code flow that earlier existed
separately in xfs_attrmulti_attr_set() and xfs_attrmulti_attr_remove().
Reviewed-by: Chandan Rajendra <chandanrlinux@xxxxxxxxx>
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> Reviewed-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
> fs/xfs/xfs_ioctl.c | 34 ++++++++++------------------------
> fs/xfs/xfs_ioctl.h | 6 ------
> fs/xfs/xfs_ioctl32.c | 4 ++--
> 3 files changed, 12 insertions(+), 32 deletions(-)
>
> diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
> index 79c418888e9a..b806003caacd 100644
> --- a/fs/xfs/xfs_ioctl.c
> +++ b/fs/xfs/xfs_ioctl.c
> @@ -389,18 +389,20 @@ xfs_attrmulti_attr_set(
> uint32_t len,
> uint32_t flags)
> {
> - unsigned char *kbuf;
> + unsigned char *kbuf = NULL;
> int error;
> size_t namelen;
>
> if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
> return -EPERM;
> - if (len > XFS_XATTR_SIZE_MAX)
> - return -EINVAL;
>
> - kbuf = memdup_user(ubuf, len);
> - if (IS_ERR(kbuf))
> - return PTR_ERR(kbuf);
> + if (ubuf) {
> + if (len > XFS_XATTR_SIZE_MAX)
> + return -EINVAL;
> + kbuf = memdup_user(ubuf, len);
> + if (IS_ERR(kbuf))
> + return PTR_ERR(kbuf);
> + }
>
> namelen = strlen(name);
> error = xfs_attr_set(XFS_I(inode), name, namelen, kbuf, len, flags);
> @@ -410,22 +412,6 @@ xfs_attrmulti_attr_set(
> return error;
> }
>
> -int
> -xfs_attrmulti_attr_remove(
> - struct inode *inode,
> - unsigned char *name,
> - uint32_t flags)
> -{
> - int error;
> -
> - if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
> - return -EPERM;
> - error = xfs_attr_set(XFS_I(inode), name, strlen(name), NULL, 0, flags);
> - if (!error)
> - xfs_forget_acl(inode, name, flags);
> - return error;
> -}
> -
> STATIC int
> xfs_attrmulti_by_handle(
> struct file *parfilp,
> @@ -504,8 +490,8 @@ xfs_attrmulti_by_handle(
> ops[i].am_error = mnt_want_write_file(parfilp);
> if (ops[i].am_error)
> break;
> - ops[i].am_error = xfs_attrmulti_attr_remove(
> - d_inode(dentry), attr_name,
> + ops[i].am_error = xfs_attrmulti_attr_set(
> + d_inode(dentry), attr_name, NULL, 0,
> ops[i].am_flags);
> mnt_drop_write_file(parfilp);
> break;
> diff --git a/fs/xfs/xfs_ioctl.h b/fs/xfs/xfs_ioctl.h
> index 420bd95dc326..819504df00ae 100644
> --- a/fs/xfs/xfs_ioctl.h
> +++ b/fs/xfs/xfs_ioctl.h
> @@ -46,12 +46,6 @@ xfs_attrmulti_attr_set(
> uint32_t len,
> uint32_t flags);
>
> -extern int
> -xfs_attrmulti_attr_remove(
> - struct inode *inode,
> - unsigned char *name,
> - uint32_t flags);
> -
> extern struct dentry *
> xfs_handle_to_dentry(
> struct file *parfilp,
> diff --git a/fs/xfs/xfs_ioctl32.c b/fs/xfs/xfs_ioctl32.c
> index 9705172e5410..e085f304e539 100644
> --- a/fs/xfs/xfs_ioctl32.c
> +++ b/fs/xfs/xfs_ioctl32.c
> @@ -488,8 +488,8 @@ xfs_compat_attrmulti_by_handle(
> ops[i].am_error = mnt_want_write_file(parfilp);
> if (ops[i].am_error)
> break;
> - ops[i].am_error = xfs_attrmulti_attr_remove(
> - d_inode(dentry), attr_name,
> + ops[i].am_error = xfs_attrmulti_attr_set(
> + d_inode(dentry), attr_name, NULL, 0,
> ops[i].am_flags);
> mnt_drop_write_file(parfilp);
> break;
>
--
chandan
