From 3a2c4d55e32ad65efebdb6de44eef3bfa08bb49d Mon Sep 17 00:00:00 2001
From: Kees Cook <kees+treewide@kernel.org>
Date: Wed, 2 Sep 2026 15:31:14 -0700
Subject: treewide: refresh kmalloc_obj() conversions

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>
---
 tools/include/nolibc/Makefile | 115 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 tools/include/nolibc/Makefile

(limited to 'tools/include/nolibc/Makefile')

diff --git a/tools/include/nolibc/Makefile b/tools/include/nolibc/Makefile
new file mode 100644
index 000000000..6d213d372
--- /dev/null
+++ b/tools/include/nolibc/Makefile
@@ -0,0 +1,115 @@
+# SPDX-License-Identifier: GPL-2.0
+# Makefile for nolibc installation and tests
+include ../../scripts/Makefile.include
+
+# we're in ".../tools/include/nolibc"
+ifeq ($(srctree),)
+srctree := $(patsubst %/tools/include/,%,$(dir $(CURDIR)))
+endif
+
+# when run as make -C tools/ nolibc_<foo> the arch is not set
+ifeq ($(ARCH),)
+include $(srctree)/scripts/subarch.include
+ARCH = $(SUBARCH)
+endif
+
+# OUTPUT is only set when run from the main makefile, otherwise
+# it defaults to this nolibc directory.
+OUTPUT ?= $(CURDIR)/
+
+architectures := alpha arm arm64 loongarch m68k mips openrisc parisc powerpc riscv s390 sh sparc x86
+arch_files := arch.h $(addsuffix .h, $(addprefix arch-, $(architectures)))
+all_files := \
+		alloca.h \
+		assert.h \
+		byteswap.h \
+		compiler.h \
+		crt.h \
+		ctype.h \
+		dirent.h \
+		elf.h \
+		endian.h \
+		err.h \
+		errno.h \
+		fcntl.h \
+		getopt.h \
+		inttypes.h \
+		limits.h \
+		math.h \
+		nolibc.h \
+		poll.h \
+		sched.h \
+		signal.h \
+		stackprotector.h \
+		std.h \
+		stdarg.h \
+		stdbool.h \
+		stddef.h \
+		stdint.h \
+		stdlib.h \
+		string.h \
+		sys.h \
+		sys/auxv.h \
+		sys/ioctl.h \
+		sys/mman.h \
+		sys/mount.h \
+		sys/prctl.h \
+		sys/ptrace.h \
+		sys/random.h \
+		sys/reboot.h \
+		sys/resource.h \
+		sys/select.h \
+		sys/stat.h \
+		sys/syscall.h \
+		sys/sysmacros.h \
+		sys/time.h \
+		sys/timerfd.h \
+		sys/types.h \
+		sys/uio.h \
+		sys/utsname.h \
+		sys/wait.h \
+		time.h \
+		types.h \
+		unistd.h \
+		stdio.h \
+
+
+# install all headers needed to support a bare-metal compiler
+all: headers
+
+install: help
+
+help:
+	@echo "Supported targets under nolibc:"
+	@echo "  all                 call \"headers\""
+	@echo "  clean               clean the sysroot"
+	@echo "  headers             prepare a multi-arch sysroot in \$${OUTPUT}sysroot"
+	@echo "  headers_standalone  like \"headers\", and also install kernel headers"
+	@echo "  help                this help"
+	@echo ""
+	@echo "These targets may also be called from tools as \"make nolibc_<target>\"."
+	@echo ""
+	@echo "Currently using the following variables:"
+	@echo "  ARCH    = $(ARCH)"
+	@echo "  OUTPUT  = $(OUTPUT)"
+	@echo ""
+
+# installs headers for all archs at once.
+headers:
+	$(Q)mkdir -p "$(OUTPUT)sysroot/include"
+	$(Q)cp --parents $(arch_files) $(all_files) "$(OUTPUT)sysroot/include/"
+
+headers_standalone: headers
+	$(Q)$(MAKE) -C $(srctree) headers_install INSTALL_HDR_PATH=$(OUTPUT)sysroot
+
+CFLAGS_s390 := -m64
+CFLAGS := $(CFLAGS_$(ARCH))
+
+headers_check: headers_standalone
+	$(Q)for header in $(filter-out crt.h std.h,$(all_files)); do \
+		$(CC) $(CFLAGS) $(CLANG_CROSS_FLAGS) -Wall -Werror -nostdinc -fsyntax-only -x c /dev/null \
+			-I$(or $(objtree),$(srctree))/usr/include -include $$header -include $$header || exit 1; \
+	done
+
+clean:
+	$(call QUIET_CLEAN, nolibc) rm -rf "$(OUTPUT)sysroot"
-- 
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