1 files changed, 67 insertions, 0 deletions
diff --git a/src/dirent64.c b/src/dirent64.c
new file mode 100644
index 000000000..b1f6141dc
--- /dev/null
+++ b/src/dirent64.c
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2020 Dmitry V. Levin <ldv@strace.io>
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#include "xgetdents.h"
+#include "kernel_dirent.h"
+
+#define D_NAME_LEN_MAX 256
+
+static void
+print_dentry_head(const kernel_dirent64_t *const dent)
+{
+	tprint_struct_begin();
+	PRINT_FIELD_U(*dent, d_ino);
+	tprint_struct_next();
+	PRINT_FIELD_U(*dent, d_off);
+	tprint_struct_next();
+	PRINT_FIELD_U(*dent, d_reclen);
+}
+
+static unsigned int
+decode_dentry_head(struct tcb *const tcp, const void *const arg)
+{
+	const kernel_dirent64_t *const dent = arg;
+
+	if (!abbrev(tcp))
+		print_dentry_head(dent);
+
+	return dent->d_reclen;
+}
+
+static int
+decode_dentry_tail(struct tcb *const tcp, kernel_ulong_t addr,
+		   const void *const arg, unsigned int d_name_len)
+{
+	const kernel_dirent64_t *const dent = arg;
+	int rc = 0;
+
+	/* !abbrev(tcp) */
+
+	tprint_struct_next();
+	PRINT_FIELD_XVAL(*dent, d_type, dirent_types, "DT_???");
+
+	if (d_name_len) {
+		if (d_name_len > D_NAME_LEN_MAX)
+			d_name_len = D_NAME_LEN_MAX;
+		tprint_struct_next();
+		tprints_field_name("d_name");
+		rc = printpathn(tcp, addr, d_name_len - 1);
+	}
+	tprint_struct_end();
+
+	return rc;
+}
+
+SYS_FUNC(getdents64)
+{
+	/* The minimum size of a valid directory entry.  */
+	static const unsigned int header_size =
+		offsetof(kernel_dirent64_t, d_name);
+
+	return xgetdents(tcp, header_size,
+			 decode_dentry_head, decode_dentry_tail);
+}