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Diffstat (limited to 'fs/hfsplus/xattr_user.c')
-rw-r--r--fs/hfsplus/xattr_user.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/fs/hfsplus/xattr_user.c b/fs/hfsplus/xattr_user.c
new file mode 100644
index 000000000000..e34016561ae0
--- /dev/null
+++ b/fs/hfsplus/xattr_user.c
@@ -0,0 +1,63 @@
+/*
+ * linux/fs/hfsplus/xattr_user.c
+ *
+ * Vyacheslav Dubeyko <slava@dubeyko.com>
+ *
+ * Handler for user extended attributes.
+ */
+
+#include "hfsplus_fs.h"
+#include "xattr.h"
+
+static int hfsplus_user_getxattr(struct dentry *dentry, const char *name,
+ void *buffer, size_t size, int type)
+{
+ char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
+ size_t len = strlen(name);
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ if (len + XATTR_USER_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
+ return -EOPNOTSUPP;
+
+ strcpy(xattr_name, XATTR_USER_PREFIX);
+ strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name);
+
+ return hfsplus_getxattr(dentry, xattr_name, buffer, size);
+}
+
+static int hfsplus_user_setxattr(struct dentry *dentry, const char *name,
+ const void *buffer, size_t size, int flags, int type)
+{
+ char xattr_name[HFSPLUS_ATTR_MAX_STRLEN + 1] = {0};
+ size_t len = strlen(name);
+
+ if (!strcmp(name, ""))
+ return -EINVAL;
+
+ if (len + XATTR_USER_PREFIX_LEN > HFSPLUS_ATTR_MAX_STRLEN)
+ return -EOPNOTSUPP;
+
+ strcpy(xattr_name, XATTR_USER_PREFIX);
+ strcpy(xattr_name + XATTR_USER_PREFIX_LEN, name);
+
+ return hfsplus_setxattr(dentry, xattr_name, buffer, size, flags);
+}
+
+static size_t hfsplus_user_listxattr(struct dentry *dentry, char *list,
+ size_t list_size, const char *name, size_t name_len, int type)
+{
+ /*
+ * This method is not used.
+ * It is used hfsplus_listxattr() instead of generic_listxattr().
+ */
+ return -EOPNOTSUPP;
+}
+
+const struct xattr_handler hfsplus_xattr_user_handler = {
+ .prefix = XATTR_USER_PREFIX,
+ .list = hfsplus_user_listxattr,
+ .get = hfsplus_user_getxattr,
+ .set = hfsplus_user_setxattr,
+};