From: Johannes Schlumberger <[email protected]>
Makes it possible to get extended attributes for a given inode. We need this
for cases where we no longer have the corresponding direntry.
Signed-off-by: Johannes Schlumberger <[email protected]>
---
fs/xattr.c | 18 ++++++++++++++++++
include/linux/xattr.h | 1 +
2 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/fs/xattr.c b/fs/xattr.c
index 4523aca..467417f 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -538,6 +538,24 @@ xattr_resolve_name(struct xattr_handler **handlers, const char **name)
return handler;
}
+struct xattr_handler *
+xattr_resolve_name_sns(struct xattr_handler **handlers, const char **name)
+{
+ struct xattr_handler *handler;
+
+ if (!*name)
+ return NULL;
+
+ for_each_xattr_handler(handlers, handler) {
+ const char *n = strcmp_prefix(*name, handler->prefix);
+ if (n) {
+ *name = n;
+ break;
+ }
+ }
+ return handler;
+}
+
/*
* Find the handler for the prefix and dispatch its get() operation.
*/
diff --git a/include/linux/xattr.h b/include/linux/xattr.h
index def131a..5653508 100644
--- a/include/linux/xattr.h
+++ b/include/linux/xattr.h
@@ -46,6 +46,7 @@ struct xattr_handler {
size_t size, int flags);
};
+struct xattr_handler * xattr_resolve_name_sns(struct xattr_handler **, const char **);
ssize_t vfs_getxattr(struct dentry *, char *, void *, size_t);
ssize_t vfs_listxattr(struct dentry *d, char *list, size_t size);
int vfs_setxattr(struct dentry *, char *, void *, size_t, int);
--
1.5.2.1
-
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