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xfs: improve xfs_forget_acl 

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>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Chandan Rajendra <chandanrlinux@gmail.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This commit is contained in:
Christoph Hellwig 2020-02-26 17:30:41 -08:00 committed by Darrick J. Wong
parent 53ac39fdb3
commit 5a3930e27e
4 changed files with 24 additions and 28 deletions
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16
fs/xfs/xfs_acl.c
View File

@ -270,3 +270,19 @@ 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);
}

6
fs/xfs/xfs_acl.h
View File

@ -13,14 +13,16 @@ 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
static inline void xfs_forget_acl(struct inode *inode, const char *name)
{
}
#endif /* CONFIG_XFS_POSIX_ACL */
extern void xfs_forget_acl(struct inode *inode, const char *name, int xflags);
#endif /* __XFS_ACL_H__ */

4
fs/xfs/xfs_ioctl.c
View File

@ -510,8 +510,8 @@ 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;
}

26
fs/xfs/xfs_xattr.c
View File

@ -39,28 +39,6 @@ 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,
@ -83,8 +61,8 @@ 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 && (handler->flags & ATTR_ROOT))
xfs_forget_acl(inode, name);
return error;
}