1 files changed, 73 insertions, 0 deletions
diff --git a/unpack/dump_xattrs.c b/unpack/dump_xattrs.c
new file mode 100644
index 0000000..c619767
--- /dev/null
+++ b/unpack/dump_xattrs.c
@@ -0,0 +1,73 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * dump_xattrs.c
+ *
+ * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
+ */
+#include "rdsquashfs.h"
+
+int dump_xattrs(sqfs_xattr_reader_t *xattr, const sqfs_inode_generic_t *inode)
+{
+	sqfs_xattr_value_t *value;
+	sqfs_xattr_entry_t *key;
+	sqfs_xattr_id_t desc;
+	uint32_t index;
+	size_t i;
+
+	if (xattr == NULL)
+		return 0;
+
+	switch (inode->base.type) {
+	case SQFS_INODE_EXT_DIR:
+		index = inode->data.dir_ext.xattr_idx;
+		break;
+	case SQFS_INODE_EXT_FILE:
+		index = inode->data.file_ext.xattr_idx;
+		break;
+	case SQFS_INODE_EXT_SLINK:
+		index = inode->data.slink_ext.xattr_idx;
+		break;
+	case SQFS_INODE_EXT_BDEV:
+	case SQFS_INODE_EXT_CDEV:
+		index = inode->data.dev_ext.xattr_idx;
+		break;
+	case SQFS_INODE_EXT_FIFO:
+	case SQFS_INODE_EXT_SOCKET:
+		index = inode->data.ipc_ext.xattr_idx;
+		break;
+	default:
+		return 0;
+	}
+
+	if (index == 0xFFFFFFFF)
+		return 0;
+
+	if (sqfs_xattr_reader_get_desc(xattr, index, &desc)) {
+		fputs("Error resolving xattr index\n", stderr);
+		return -1;
+	}
+
+	if (sqfs_xattr_reader_seek_kv(xattr, &desc)) {
+		fputs("Error locating xattr key-value pairs\n", stderr);
+		return -1;
+	}
+
+	for (i = 0; i < desc.count; ++i) {
+		if (sqfs_xattr_reader_read_key(xattr, &key)) {
+			fputs("Error reading xattr key\n", stderr);
+			return -1;
+		}
+
+		if (sqfs_xattr_reader_read_value(xattr, key, &value)) {
+			fputs("Error reading xattr value\n", stderr);
+			free(key);
+			return -1;
+		}
+
+		printf("%s=%s\n", key->key, value->value);
+		free(key);
+		free(value);
+	}
+
+	return 0;
+}