> On Nov 5, 2015, at 4:39 AM, Andreas Gruenbacher <agruenba@xxxxxxxxxx> wrote:
>
> We will need to call iop->permission and iop->get_acl from
> inode_change_ok() for additional permission checks, and both take a
> non-const inode.
Seems unfortunate that those functions cannot themselves be changed to
take a const struct inode, but it doesn't look possible.
Reviewed-by: Andreas Dilger <adilger@xxxxxxxxx>
> Signed-off-by: Andreas Gruenbacher <agruenba@xxxxxxxxxx>
> Reviewed-by: J. Bruce Fields <bfields@xxxxxxxxxx>
> ---
> fs/attr.c | 2 +-
> include/linux/fs.h | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/fs/attr.c b/fs/attr.c
> index 6530ced..328be71 100644
> --- a/fs/attr.c
> +++ b/fs/attr.c
> @@ -28,7 +28,7 @@
> * Should be called as the first thing in ->setattr implementations,
> * possibly after taking additional locks.
> */
> -int inode_change_ok(const struct inode *inode, struct iattr *attr)
> +int inode_change_ok(struct inode *inode, struct iattr *attr)
> {
> unsigned int ia_valid = attr->ia_valid;
>
> diff --git a/include/linux/fs.h b/include/linux/fs.h
> index 402acd7..aab32c8 100644
> --- a/include/linux/fs.h
> +++ b/include/linux/fs.h
> @@ -2871,7 +2871,7 @@ extern int buffer_migrate_page(struct address_space *,
> #define buffer_migrate_page NULL
> #endif
>
> -extern int inode_change_ok(const struct inode *, struct iattr *);
> +extern int inode_change_ok(struct inode *, struct iattr *);
> extern int inode_newsize_ok(const struct inode *, loff_t offset);
> extern void setattr_copy(struct inode *inode, const struct iattr *attr);
>
> --
> 2.5.0
>
Cheers, Andreas
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