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-rw-r--r--include/linux/xattr.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/xattr.h b/include/linux/xattr.h
index 45fa3456a0cc..03c847fb6cc1 100644
--- a/include/linux/xattr.h
+++ b/include/linux/xattr.h
@@ -19,7 +19,13 @@
struct inode;
struct dentry;
+/*
+ * struct xattr_handler: When @name is set, match attributes with exactly that
+ * name. When @prefix is set instead, match attributes with that prefix and
+ * with a non-empty suffix.
+ */
struct xattr_handler {
+ const char *name;
const char *prefix;
int flags; /* fs private flags */
size_t (*list)(const struct xattr_handler *, struct dentry *dentry,
@@ -54,6 +60,11 @@ int generic_removexattr(struct dentry *dentry, const char *name);
ssize_t vfs_getxattr_alloc(struct dentry *dentry, const char *name,
char **xattr_value, size_t size, gfp_t flags);
+static inline const char *xattr_prefix(const struct xattr_handler *handler)
+{
+ return handler->prefix ?: handler->name;
+}
+
struct simple_xattrs {
struct list_head head;
spinlock_t lock;