|
@@ -37,6 +37,9 @@
|
|
|
#include <linux/writeback.h>
|
|
|
#include <linux/falloc.h>
|
|
|
#include <linux/sort.h>
|
|
|
+#include <linux/init.h>
|
|
|
+#include <linux/module.h>
|
|
|
+#include <linux/string.h>
|
|
|
|
|
|
#define MLOG_MASK_PREFIX ML_XATTR
|
|
|
#include <cluster/masklog.h>
|
|
@@ -4740,3 +4743,110 @@ static int ocfs2_delete_xattr_index_block(struct inode *inode,
|
|
|
out:
|
|
|
return ret;
|
|
|
}
|
|
|
+
|
|
|
+/*
|
|
|
+ * 'trusted' attributes support
|
|
|
+ */
|
|
|
+
|
|
|
+#define XATTR_TRUSTED_PREFIX "trusted."
|
|
|
+
|
|
|
+static size_t ocfs2_xattr_trusted_list(struct inode *inode, char *list,
|
|
|
+ size_t list_size, const char *name,
|
|
|
+ size_t name_len)
|
|
|
+{
|
|
|
+ const size_t prefix_len = sizeof(XATTR_TRUSTED_PREFIX) - 1;
|
|
|
+ const size_t total_len = prefix_len + name_len + 1;
|
|
|
+
|
|
|
+ if (list && total_len <= list_size) {
|
|
|
+ memcpy(list, XATTR_TRUSTED_PREFIX, prefix_len);
|
|
|
+ memcpy(list + prefix_len, name, name_len);
|
|
|
+ list[prefix_len + name_len] = '\0';
|
|
|
+ }
|
|
|
+ return total_len;
|
|
|
+}
|
|
|
+
|
|
|
+static int ocfs2_xattr_trusted_get(struct inode *inode, const char *name,
|
|
|
+ void *buffer, size_t size)
|
|
|
+{
|
|
|
+ if (strcmp(name, "") == 0)
|
|
|
+ return -EINVAL;
|
|
|
+ return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_TRUSTED, name,
|
|
|
+ buffer, size);
|
|
|
+}
|
|
|
+
|
|
|
+static int ocfs2_xattr_trusted_set(struct inode *inode, const char *name,
|
|
|
+ const void *value, size_t size, int flags)
|
|
|
+{
|
|
|
+ if (strcmp(name, "") == 0)
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ return ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_TRUSTED, name, value,
|
|
|
+ size, flags);
|
|
|
+}
|
|
|
+
|
|
|
+struct xattr_handler ocfs2_xattr_trusted_handler = {
|
|
|
+ .prefix = XATTR_TRUSTED_PREFIX,
|
|
|
+ .list = ocfs2_xattr_trusted_list,
|
|
|
+ .get = ocfs2_xattr_trusted_get,
|
|
|
+ .set = ocfs2_xattr_trusted_set,
|
|
|
+};
|
|
|
+
|
|
|
+
|
|
|
+/*
|
|
|
+ * 'user' attributes support
|
|
|
+ */
|
|
|
+
|
|
|
+#define XATTR_USER_PREFIX "user."
|
|
|
+
|
|
|
+static size_t ocfs2_xattr_user_list(struct inode *inode, char *list,
|
|
|
+ size_t list_size, const char *name,
|
|
|
+ size_t name_len)
|
|
|
+{
|
|
|
+ const size_t prefix_len = sizeof(XATTR_USER_PREFIX) - 1;
|
|
|
+ const size_t total_len = prefix_len + name_len + 1;
|
|
|
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
|
|
|
+
|
|
|
+ if (osb->s_mount_opt & OCFS2_MOUNT_NOUSERXATTR)
|
|
|
+ return 0;
|
|
|
+
|
|
|
+ if (list && total_len <= list_size) {
|
|
|
+ memcpy(list, XATTR_USER_PREFIX, prefix_len);
|
|
|
+ memcpy(list + prefix_len, name, name_len);
|
|
|
+ list[prefix_len + name_len] = '\0';
|
|
|
+ }
|
|
|
+ return total_len;
|
|
|
+}
|
|
|
+
|
|
|
+static int ocfs2_xattr_user_get(struct inode *inode, const char *name,
|
|
|
+ void *buffer, size_t size)
|
|
|
+{
|
|
|
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
|
|
|
+
|
|
|
+ if (strcmp(name, "") == 0)
|
|
|
+ return -EINVAL;
|
|
|
+ if (osb->s_mount_opt & OCFS2_MOUNT_NOUSERXATTR)
|
|
|
+ return -EOPNOTSUPP;
|
|
|
+ return ocfs2_xattr_get(inode, OCFS2_XATTR_INDEX_USER, name,
|
|
|
+ buffer, size);
|
|
|
+}
|
|
|
+
|
|
|
+static int ocfs2_xattr_user_set(struct inode *inode, const char *name,
|
|
|
+ const void *value, size_t size, int flags)
|
|
|
+{
|
|
|
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
|
|
|
+
|
|
|
+ if (strcmp(name, "") == 0)
|
|
|
+ return -EINVAL;
|
|
|
+ if (osb->s_mount_opt & OCFS2_MOUNT_NOUSERXATTR)
|
|
|
+ return -EOPNOTSUPP;
|
|
|
+
|
|
|
+ return ocfs2_xattr_set(inode, OCFS2_XATTR_INDEX_USER, name, value,
|
|
|
+ size, flags);
|
|
|
+}
|
|
|
+
|
|
|
+struct xattr_handler ocfs2_xattr_user_handler = {
|
|
|
+ .prefix = XATTR_USER_PREFIX,
|
|
|
+ .list = ocfs2_xattr_user_list,
|
|
|
+ .get = ocfs2_xattr_user_get,
|
|
|
+ .set = ocfs2_xattr_user_set,
|
|
|
+};
|