These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / fs / xfs / xfs_xattr.c

diff --git a/kernel/fs/xfs/xfs_xattr.c b/kernel/fs/xfs/xfs_xattr.c
index c036815..839b35c 100644 (file)
--- a/kernel/fs/xfs/xfs_xattr.c
+++ b/kernel/fs/xfs/xfs_xattr.c
@@ -32,9 +32,10 @@
 
 
 static int
-xfs_xattr_get(struct dentry *dentry, const char *name,
-               void *value, size_t size, int xflags)
+xfs_xattr_get(const struct xattr_handler *handler, struct dentry *dentry,
+               const char *name, void *value, size_t size)
 {
+       int xflags = handler->flags;
        struct xfs_inode *ip = XFS_I(d_inode(dentry));
        int error, asize = size;
 
@@ -53,11 +54,35 @@ xfs_xattr_get(struct dentry *dentry, const char *name,
        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)
+xfs_xattr_set(const struct xattr_handler *handler, struct dentry *dentry,
+               const char *name, const void *value, size_t size, int flags)
 {
-       struct xfs_inode *ip = XFS_I(d_inode(dentry));
+       int                     xflags = handler->flags;
+       struct xfs_inode        *ip = XFS_I(d_inode(dentry));
+       int                     error;
 
        if (strcmp(name, "") == 0)
                return -EINVAL;
@@ -70,8 +95,12 @@ xfs_xattr_set(struct dentry *dentry, const char *name, const void *value,
 
        if (!value)
                return xfs_attr_remove(ip, (unsigned char *)name, xflags);
-       return xfs_attr_set(ip, (unsigned char *)name,
+       error = xfs_attr_set(ip, (unsigned char *)name,
                                (void *)value, size, xflags);
+       if (!error)
+               xfs_forget_acl(d_inode(dentry), name, xflags);
+
+       return error;
 }
 
 static const struct xattr_handler xfs_xattr_user_handler = {