treewide: refresh kmalloc_obj() conversionsgrafted

This is another run of the Coccinelle script for converting kmalloc()
family of allocations to kmalloc_obj() via the existing rules in
scripts/coccinelle/api/kmalloc_objs.cocci

This catches both the set of kmalloc() uses added since the first
kmalloc_obj() conversions in v7.0 and adds a large group missed in the
first pass due to Coccinelle not interacting well with the cleanup.h
scoped_...() family of macros[1]. I worked around this with spatch's
"--macro-file" argument to a file with all the scoped_...() macros mapped
to Coccinelle's YACFE_ITERATOR[2] as that was the closest viable control
flow indicator I could find.

Build tested allmodconfig on x86, arm64, arm, loongarch, mips, powerpc,
riscv, and s390 with no new warnings.

Link: https://lore.kernel.org/lkml/202609021314.8A9C0B8@keescook/ [1]
Link: https://github.com/coccinelle/coccinelle/blob/master/standard.h [2]
Signed-off-by: Kees Cook <kees+treewide@kernel.org>

1 files changed, 23 insertions, 0 deletions

diff --git a/drivers/md/dm-vdo/string-utils.h b/drivers/md/dm-vdo/string-utils.h
new file mode 100644
index 000000000..96eecd38b
--- /dev/null
+++ b/drivers/md/dm-vdo/string-utils.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright 2023 Red Hat
+ */
+
+#ifndef VDO_STRING_UTILS_H
+#define VDO_STRING_UTILS_H
+
+#include <linux/kernel.h>
+#include <linux/string.h>
+
+/* Utilities related to string manipulation */
+
+static inline const char *vdo_bool_to_string(bool value)
+{
+	return value ? "true" : "false";
+}
+
+/* Append a formatted string to the end of a buffer. */
+char *vdo_append_to_buffer(char *buffer, char *buf_end, const char *fmt, ...)
+	__printf(3, 4);
+
+#endif /* VDO_STRING_UTILS_H */