1 files changed, 128 insertions, 0 deletions
diff --git a/src/fs_f_ioctl.c b/src/fs_f_ioctl.c
new file mode 100644
index 000000000..d0de799f9
--- /dev/null
+++ b/src/fs_f_ioctl.c
@@ -0,0 +1,128 @@
+/*
+ * Copyright (c) 2016 Jeff Mahoney <jeffm@suse.com>
+ * Copyright (c) 2016-2021 The strace developers.
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ */
+
+#include "defs.h"
+#include <linux/fs.h>
+#include "types/fiemap.h"
+#include "xlat/fiemap_flags.h"
+#include "xlat/fiemap_extent_flags.h"
+#include "xlat/fs_ioc_flags.h"
+#define XLAT_MACROS_ONLY
+# include "xlat/fs_f_ioctl_cmds.h"
+#undef XLAT_MACROS_ONLY
+
+static bool
+print_fiemap_extent(struct tcb *tcp, void *elem_buf, size_t elem_size, void *data)
+{
+	const struct_fiemap_extent *fe = elem_buf;
+
+	tprint_struct_begin();
+	PRINT_FIELD_U(*fe, fe_logical);
+	tprint_struct_next();
+	PRINT_FIELD_U(*fe, fe_physical);
+	tprint_struct_next();
+	PRINT_FIELD_U(*fe, fe_length);
+	tprint_struct_next();
+	PRINT_FIELD_FLAGS(*fe, fe_flags, fiemap_extent_flags,
+			  "FIEMAP_EXTENT_???");
+	tprint_struct_end();
+
+	return true;
+}
+
+static int
+decode_fiemap(struct tcb *const tcp, const kernel_ulong_t arg)
+{
+	struct_fiemap args;
+
+	if (entering(tcp))
+		tprints(", ");
+	else if (syserror(tcp))
+		return RVAL_IOCTL_DECODED;
+	else
+		tprint_value_changed();
+
+	if (umove_or_printaddr(tcp, arg, &args))
+		return RVAL_IOCTL_DECODED;
+
+	if (entering(tcp)) {
+		tprint_struct_begin();
+		PRINT_FIELD_U(args, fm_start);
+		tprint_struct_next();
+		PRINT_FIELD_U(args, fm_length);
+		tprint_struct_next();
+		PRINT_FIELD_FLAGS(args, fm_flags, fiemap_flags,
+				  "FIEMAP_FLAG_???");
+		tprint_struct_next();
+		PRINT_FIELD_U(args, fm_extent_count);
+		tprint_struct_end();
+		return 0;
+	}
+
+	tprint_struct_begin();
+	PRINT_FIELD_FLAGS(args, fm_flags, fiemap_flags, "FIEMAP_FLAG_???");
+	tprint_struct_next();
+	PRINT_FIELD_U(args, fm_mapped_extents);
+	if (abbrev(tcp)) {
+		tprint_struct_next();
+		tprint_more_data_follows();
+	} else {
+		struct_fiemap_extent fe;
+		tprint_struct_next();
+		tprints_field_name("fm_extents");
+		print_array(tcp, arg + offsetof(typeof(args), fm_extents),
+			    args.fm_mapped_extents, &fe, sizeof(fe),
+			    tfetch_mem, print_fiemap_extent, 0);
+	}
+	tprint_struct_end();
+
+	return RVAL_IOCTL_DECODED;
+}
+
+static void
+decode_fs_ioc_flags(struct tcb *const tcp, const kernel_ulong_t arg)
+{
+	unsigned int flags;
+
+	if (!umove_or_printaddr(tcp, arg, &flags)) {
+		tprints("[");
+		printflags(fs_ioc_flags, flags, "FS_???_FL");
+		tprints("]");
+	}
+}
+
+int
+fs_f_ioctl(struct tcb *const tcp, const unsigned int code,
+	   const kernel_ulong_t arg)
+{
+	switch (code) {
+	case FS_IOC_FIEMAP:
+		return decode_fiemap(tcp, arg);
+
+	case FS_IOC_GETFLAGS:
+#if SIZEOF_LONG > 4
+	case FS_IOC32_GETFLAGS:
+#endif
+		if (entering(tcp))
+			return 0;
+		ATTRIBUTE_FALLTHROUGH;
+
+	case FS_IOC_SETFLAGS:
+#if SIZEOF_LONG > 4
+	case FS_IOC32_SETFLAGS:
+#endif
+		tprints(", ");
+		decode_fs_ioc_flags(tcp, arg);
+		break;
+
+	default:
+		return RVAL_DECODED;
+	};
+
+	return RVAL_IOCTL_DECODED;
+}