From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: Christoph Hellwig <hch@lst.de>
Cc: linux-xfs@vger.kernel.org,
Allison Collins <allison.henderson@oracle.com>
Subject: Re: [PATCH 25/29] xfs: improve xfs_forget_acl
Date: Tue, 21 Jan 2020 10:56:42 -0800 [thread overview]
Message-ID: <20200121185641.GZ8247@magnolia> (raw)
In-Reply-To: <20200114081051.297488-26-hch@lst.de>
On Tue, Jan 14, 2020 at 09:10:47AM +0100, Christoph Hellwig wrote:
> Move the function to xfs_acl.c and provide a proper stub for the
> !CONFIG_XFS_POSIX_ACL case. Lift the flags check to the caller as it
> nicely fits in there.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
Looks ok,
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
--D
> ---
> fs/xfs/xfs_acl.c | 16 ++++++++++++++++
> fs/xfs/xfs_acl.h | 4 ++--
> fs/xfs/xfs_ioctl.c | 4 ++--
> fs/xfs/xfs_xattr.c | 26 ++------------------------
> 4 files changed, 22 insertions(+), 28 deletions(-)
>
> diff --git a/fs/xfs/xfs_acl.c b/fs/xfs/xfs_acl.c
> index 89f076e2ed7d..c993ffd9b767 100644
> --- a/fs/xfs/xfs_acl.c
> +++ b/fs/xfs/xfs_acl.c
> @@ -264,3 +264,19 @@ xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
>
> return error;
> }
> +
> +/*
> + * Invalidate any cached ACLs if the user has bypassed the ACL interface.
> + * We don't validate the content whatsoever so it is caller responsibility to
> + * provide data in valid format and ensure i_mode is consistent.
> + */
> +void
> +xfs_forget_acl(
> + struct inode *inode,
> + const char *name)
> +{
> + if (!strcmp(name, SGI_ACL_FILE))
> + forget_cached_acl(inode, ACL_TYPE_ACCESS);
> + else if (!strcmp(name, SGI_ACL_DEFAULT))
> + forget_cached_acl(inode, ACL_TYPE_DEFAULT);
> +}
> diff --git a/fs/xfs/xfs_acl.h b/fs/xfs/xfs_acl.h
> index 94615e34bc86..bd8a306046a9 100644
> --- a/fs/xfs/xfs_acl.h
> +++ b/fs/xfs/xfs_acl.h
> @@ -13,14 +13,14 @@ struct posix_acl;
> extern struct posix_acl *xfs_get_acl(struct inode *inode, int type);
> extern int xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type);
> extern int __xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type);
> +void xfs_forget_acl(struct inode *inode, const char *name);
> #else
> static inline struct posix_acl *xfs_get_acl(struct inode *inode, int type)
> {
> return NULL;
> }
> # define xfs_set_acl NULL
> +# define xfs_forget_acl(inode, name) 0
Hm, won't that make gcc cough up "warning: statement with no effect"
warnings when posix acls are disabled?
I think the way we usually do this is to define it to ((void) 0)...
--D
> #endif /* CONFIG_XFS_POSIX_ACL */
>
> -extern void xfs_forget_acl(struct inode *inode, const char *name, int xflags);
> -
> #endif /* __XFS_ACL_H__ */
> diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
> index 899a3b41fa91..7a1ff66b4786 100644
> --- a/fs/xfs/xfs_ioctl.c
> +++ b/fs/xfs/xfs_ioctl.c
> @@ -509,8 +509,8 @@ xfs_attrmulti_attr_set(
> }
>
> error = xfs_attr_set(&args);
> - if (!error)
> - xfs_forget_acl(inode, name, flags);
> + if (!error && (flags & ATTR_ROOT))
> + xfs_forget_acl(inode, name);
> kfree(args.value);
> return error;
> }
> diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c
> index e1951d2b878e..863e9fdec162 100644
> --- a/fs/xfs/xfs_xattr.c
> +++ b/fs/xfs/xfs_xattr.c
> @@ -37,28 +37,6 @@ xfs_xattr_get(const struct xattr_handler *handler, struct dentry *unused,
> return args.valuelen;
> }
>
> -void
> -xfs_forget_acl(
> - struct inode *inode,
> - const char *name,
> - int xflags)
> -{
> - /*
> - * Invalidate any cached ACLs if the user has bypassed the ACL
> - * interface. We don't validate the content whatsoever so it is caller
> - * responsibility to provide data in valid format and ensure i_mode is
> - * consistent.
> - */
> - if (xflags & ATTR_ROOT) {
> -#ifdef CONFIG_XFS_POSIX_ACL
> - if (!strcmp(name, SGI_ACL_FILE))
> - forget_cached_acl(inode, ACL_TYPE_ACCESS);
> - else if (!strcmp(name, SGI_ACL_DEFAULT))
> - forget_cached_acl(inode, ACL_TYPE_DEFAULT);
> -#endif
> - }
> -}
> -
> static int
> xfs_xattr_set(const struct xattr_handler *handler, struct dentry *unused,
> struct inode *inode, const char *name, const void *value,
> @@ -81,8 +59,8 @@ xfs_xattr_set(const struct xattr_handler *handler, struct dentry *unused,
> args.flags |= ATTR_REPLACE;
>
> error = xfs_attr_set(&args);
> - if (!error)
> - xfs_forget_acl(inode, name, args.flags);
> + if (!error && (flags & ATTR_ROOT))
> + xfs_forget_acl(inode, name);
> return error;
> }
>
> --
> 2.24.1
>
next prev parent reply other threads:[~2020-01-21 18:56 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-14 8:10 clean up the attr interface v2 Christoph Hellwig
2020-01-14 8:10 ` [PATCH 01/29] xfs: remove the ATTR_INCOMPLETE flag Christoph Hellwig
2020-01-17 0:59 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 02/29] xfs: merge xfs_attr_remove into xfs_attr_set Christoph Hellwig
2020-01-21 17:28 ` Darrick J. Wong
2020-01-25 4:17 ` Allison Collins
2020-01-25 23:22 ` Christoph Hellwig
2020-01-26 22:23 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 03/29] xfs: merge xfs_attrmulti_attr_remove into xfs_attrmulti_attr_set Christoph Hellwig
2020-01-21 17:41 ` Darrick J. Wong
2020-01-23 22:33 ` Christoph Hellwig
2020-01-14 8:10 ` [PATCH 04/29] xfs: use strndup_user in XFS_IOC_ATTRMULTI_BY_HANDLE Christoph Hellwig
2020-01-21 17:45 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 05/29] xfs: factor out a helper for a single XFS_IOC_ATTRMULTI_BY_HANDLE op Christoph Hellwig
2020-01-21 17:54 ` Darrick J. Wong
2020-01-23 22:34 ` Christoph Hellwig
2020-01-14 8:10 ` [PATCH 06/29] xfs: remove the name == NULL check from xfs_attr_args_init Christoph Hellwig
2020-01-21 17:57 ` Darrick J. Wong
2020-01-23 22:35 ` Christoph Hellwig
2020-01-14 8:10 ` [PATCH 07/29] xfs: remove the MAXNAMELEN " Christoph Hellwig
2020-01-21 18:03 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 08/29] xfs: move struct xfs_da_args to xfs_types.h Christoph Hellwig
2020-01-21 18:48 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 09/29] xfs: turn xfs_da_args.value into a void pointer Christoph Hellwig
2020-01-21 18:07 ` Darrick J. Wong
2020-01-23 22:36 ` Christoph Hellwig
2020-01-14 8:10 ` [PATCH 10/29] xfs: pass an initialized xfs_da_args structure to xfs_attr_set Christoph Hellwig
2020-01-21 18:10 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 11/29] xfs: pass an initialized xfs_da_args to xfs_attr_get Christoph Hellwig
2020-01-21 18:12 ` Darrick J. Wong
2020-01-23 22:39 ` Christoph Hellwig
2020-01-14 8:10 ` [PATCH 12/29] xfs: remove the xfs_inode argument to xfs_attr_get_ilocked Christoph Hellwig
2020-01-21 18:13 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 13/29] xfs: remove ATTR_KERNOVAL Christoph Hellwig
2020-01-21 18:15 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 14/29] xfs: remove ATTR_ALLOC and XFS_DA_OP_ALLOCVAL Christoph Hellwig
2020-01-21 18:17 ` Darrick J. Wong
2020-01-23 22:40 ` Christoph Hellwig
2020-01-14 8:10 ` [PATCH 15/29] xfs: replace ATTR_KERNOTIME with XFS_DA_OP_NOTIME Christoph Hellwig
2020-01-21 18:20 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 16/29] xfs: factor out a xfs_attr_match helper Christoph Hellwig
2020-01-21 18:27 ` Darrick J. Wong
2020-01-23 22:41 ` Christoph Hellwig
2020-01-14 8:10 ` [PATCH 17/29] xfs: cleanup xfs_attr_list_context Christoph Hellwig
2020-01-21 18:30 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 18/29] xfs: remove the unused ATTR_ENTRY macro Christoph Hellwig
2020-01-21 18:33 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 19/29] xfs: replace ATTR_ENTBASESIZE with offsetoff Christoph Hellwig
2020-01-21 18:36 ` Darrick J. Wong
2020-01-23 22:43 ` Christoph Hellwig
2020-01-14 8:10 ` [PATCH 20/29] xfs: move the legacy xfs_attr_list to xfs_ioctl.c Christoph Hellwig
2020-01-21 18:41 ` Darrick J. Wong
2020-01-24 23:13 ` Christoph Hellwig
2020-01-14 8:10 ` [PATCH 21/29] xfs: rename xfs_attr_list_int to xfs_attr_list Christoph Hellwig
2020-01-21 18:42 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 22/29] xfs: lift common checks into xfs_ioc_attr_list Christoph Hellwig
2020-01-21 18:43 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 23/29] xfs: lift buffer allocation " Christoph Hellwig
2020-01-21 18:49 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 24/29] xfs: lift cursor copy in/out " Christoph Hellwig
2020-01-21 18:52 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 25/29] xfs: improve xfs_forget_acl Christoph Hellwig
2020-01-21 18:56 ` Darrick J. Wong [this message]
2020-01-14 8:10 ` [PATCH 26/29] xfs: clean up the ATTR_REPLACE checks Christoph Hellwig
2020-01-21 18:57 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 27/29] xfs: clean up the attr flag confusion Christoph Hellwig
2020-01-21 19:44 ` Darrick J. Wong
2020-01-24 23:24 ` Christoph Hellwig
2020-01-25 23:10 ` Christoph Hellwig
2020-01-26 22:24 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 28/29] xfs: remove XFS_DA_OP_INCOMPLETE Christoph Hellwig
2020-01-21 19:45 ` Darrick J. Wong
2020-01-14 8:10 ` [PATCH 29/29] xfs: embedded the attrlist cursor into struct xfs_attr_list_context Christoph Hellwig
2020-01-21 19:04 ` Darrick J. Wong
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