mirror of
https://github.com/torvalds/linux
synced 2024-07-09 12:49:11 +00:00
fbf5892df2
Kmod is now (since kmod commit 09c9f8c5df04 ("libkmod: Use kernel
decompression when available")) using the kernel decompressor, when
loading compressed modules.
However, the kernel XZ decompressor is XZ Embedded, which doesn't
handle CRC64 and dictionaries larger than 1MiB.
Use CRC32 and 1MiB dictionary when XZ compressing and installing
kernel modules.
Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1050582
Signed-off-by: Martin Nybo Andersen <tweek@tweek.dk>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
164 lines
3.7 KiB
Makefile
164 lines
3.7 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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# ==========================================================================
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# Installing modules
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# ==========================================================================
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PHONY := __modinst
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__modinst:
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include include/config/auto.conf
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include $(srctree)/scripts/Kbuild.include
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install-y :=
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ifeq ($(KBUILD_EXTMOD)$(sign-only),)
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# remove the old directory and symlink
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$(shell rm -fr $(MODLIB)/kernel $(MODLIB)/build)
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install-$(CONFIG_MODULES) += $(addprefix $(MODLIB)/, build modules.order)
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$(MODLIB)/build: FORCE
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$(call cmd,symlink)
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quiet_cmd_symlink = SYMLINK $@
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cmd_symlink = ln -s $(CURDIR) $@
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$(MODLIB)/modules.order: modules.order FORCE
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$(call cmd,install_modorder)
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quiet_cmd_install_modorder = INSTALL $@
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cmd_install_modorder = sed 's:^\(.*\)\.o$$:kernel/\1.ko:' $< > $@
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# Install modules.builtin(.modinfo) even when CONFIG_MODULES is disabled.
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install-y += $(addprefix $(MODLIB)/, modules.builtin modules.builtin.modinfo)
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$(addprefix $(MODLIB)/, modules.builtin modules.builtin.modinfo): $(MODLIB)/%: % FORCE
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$(call cmd,install)
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endif
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modules := $(call read-file, $(MODORDER))
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ifeq ($(KBUILD_EXTMOD),)
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dst := $(MODLIB)/kernel
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else
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INSTALL_MOD_DIR ?= updates
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dst := $(MODLIB)/$(INSTALL_MOD_DIR)
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endif
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$(foreach x, % :, $(if $(findstring $x, $(dst)), \
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$(error module installation path cannot contain '$x')))
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suffix-y :=
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suffix-$(CONFIG_MODULE_COMPRESS_GZIP) := .gz
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suffix-$(CONFIG_MODULE_COMPRESS_XZ) := .xz
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suffix-$(CONFIG_MODULE_COMPRESS_ZSTD) := .zst
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modules := $(patsubst $(extmod_prefix)%.o, $(dst)/%.ko$(suffix-y), $(modules))
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install-$(CONFIG_MODULES) += $(modules)
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__modinst: $(install-y)
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@:
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#
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# Installation
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#
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quiet_cmd_install = INSTALL $@
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cmd_install = cp $< $@
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# Strip
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#
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# INSTALL_MOD_STRIP, if defined, will cause modules to be stripped after they
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# are installed. If INSTALL_MOD_STRIP is '1', then the default option
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# --strip-debug will be used. Otherwise, INSTALL_MOD_STRIP value will be used
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# as the options to the strip command.
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ifdef INSTALL_MOD_STRIP
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ifeq ($(INSTALL_MOD_STRIP),1)
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strip-option := --strip-debug
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else
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strip-option := $(INSTALL_MOD_STRIP)
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endif
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quiet_cmd_strip = STRIP $@
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cmd_strip = $(STRIP) $(strip-option) $@
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else
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quiet_cmd_strip =
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cmd_strip = :
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endif
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#
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# Signing
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# Don't stop modules_install even if we can't sign external modules.
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#
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ifeq ($(filter pkcs11:%, $(CONFIG_MODULE_SIG_KEY)),)
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sig-key := $(if $(wildcard $(CONFIG_MODULE_SIG_KEY)),,$(srctree)/)$(CONFIG_MODULE_SIG_KEY)
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else
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sig-key := $(CONFIG_MODULE_SIG_KEY)
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endif
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quiet_cmd_sign = SIGN $@
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cmd_sign = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) "$(sig-key)" certs/signing_key.x509 $@ \
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$(if $(KBUILD_EXTMOD),|| true)
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ifeq ($(sign-only),)
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# During modules_install, modules are signed only when CONFIG_MODULE_SIG_ALL=y.
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ifndef CONFIG_MODULE_SIG_ALL
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quiet_cmd_sign :=
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cmd_sign := :
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endif
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# Create necessary directories
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$(foreach dir, $(sort $(dir $(install-y))), $(shell mkdir -p $(dir)))
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$(dst)/%.ko: $(extmod_prefix)%.ko FORCE
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$(call cmd,install)
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$(call cmd,strip)
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$(call cmd,sign)
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ifdef CONFIG_MODULES
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__modinst: depmod
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PHONY += depmod
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depmod: $(install-y)
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$(call cmd,depmod)
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quiet_cmd_depmod = DEPMOD $(MODLIB)
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cmd_depmod = $(srctree)/scripts/depmod.sh $(KERNELRELEASE)
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endif
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else
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$(dst)/%.ko: FORCE
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$(call cmd,sign)
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endif
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#
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# Compression
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#
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quiet_cmd_gzip = GZIP $@
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cmd_gzip = $(KGZIP) -n -f $<
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quiet_cmd_xz = XZ $@
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cmd_xz = $(XZ) --check=crc32 --lzma2=dict=1MiB -f $<
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quiet_cmd_zstd = ZSTD $@
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cmd_zstd = $(ZSTD) -T0 --rm -f -q $<
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$(dst)/%.ko.gz: $(dst)/%.ko FORCE
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$(call cmd,gzip)
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$(dst)/%.ko.xz: $(dst)/%.ko FORCE
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$(call cmd,xz)
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$(dst)/%.ko.zst: $(dst)/%.ko FORCE
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$(call cmd,zstd)
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PHONY += FORCE
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FORCE:
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.PHONY: $(PHONY)
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