xfs: invalidate cached acl if set via ioctl
Setting or removing the "SGI_ACL_[FILE|DEFAULT]" attributes via the
XFS_IOC_ATTRMULTI_BY_HANDLE ioctl completely bypasses the POSIX ACL
infrastructure, like setting the "trusted.SGI_ACL_[FILE|DEFAULT]" xattrs
did until commit 6caa1056. Similar to that commit, invalidate cached
acls when setting/removing them via the ioctl as well.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
diff --git a/fs/xfs/xfs_xattr.c b/fs/xfs/xfs_xattr.c
index 1e08d3e..8294f86 100644
--- a/fs/xfs/xfs_xattr.c
+++ b/fs/xfs/xfs_xattr.c
@@ -53,6 +53,28 @@
return asize;
}
+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(struct dentry *dentry, const char *name, const void *value,
size_t size, int flags, int xflags)
@@ -73,20 +95,8 @@
return xfs_attr_remove(ip, (unsigned char *)name, xflags);
error = xfs_attr_set(ip, (unsigned char *)name,
(void *)value, size, 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.
- */
-#ifdef CONFIG_XFS_POSIX_ACL
- if (!error && (xflags & ATTR_ROOT)) {
- if (!strcmp(name, SGI_ACL_FILE))
- forget_cached_acl(VFS_I(ip), ACL_TYPE_ACCESS);
- else if (!strcmp(name, SGI_ACL_DEFAULT))
- forget_cached_acl(VFS_I(ip), ACL_TYPE_DEFAULT);
- }
-#endif
+ if (!error)
+ xfs_forget_acl(d_inode(dentry), name, xflags);
return error;
}
