From 24b31c9428706b76be4bdffcc586d7a19fdc4207 Mon Sep 17 00:00:00 2001 From: Felix Fietkau Date: Sun, 2 Dec 2012 17:42:17 +0000 Subject: [PATCH] kernel: fix stripping symbol exports SVN-Revision: 34458 --- include/kernel-build.mk | 30 ++++++++++++---- .../patches-3.3/220-module_exports.patch | 36 ++++++++++--------- .../patches-3.6/220-module_exports.patch | 36 ++++++++++--------- .../patches-3.7/220-module_exports.patch | 36 ++++++++++--------- 4 files changed, 80 insertions(+), 58 deletions(-) diff --git a/include/kernel-build.mk b/include/kernel-build.mk index cf8737c8ee..2ae80e54e2 100644 --- a/include/kernel-build.mk +++ b/include/kernel-build.mk @@ -67,24 +67,40 @@ define BuildKernel $(Kernel/Prepare) touch $$@ - $(KERNEL_BUILD_DIR)/symtab.txt: FORCE + $(KERNEL_BUILD_DIR)/symtab.h: FORCE + rm -f $(KERNEL_BUILD_DIR)/symtab.h + touch $(KERNEL_BUILD_DIR)/symtab.h + +$(MAKE) $(KERNEL_MAKEOPTS) vmlinux find $(LINUX_DIR) $(STAGING_DIR_ROOT)/lib/modules -name \*.ko | \ xargs $(TARGET_CROSS)nm | \ awk '$$$$1 == "U" { print $$$$2 } ' | \ - sort -u > $$@ - - $(KERNEL_BUILD_DIR)/symtab.h: $(KERNEL_BUILD_DIR)/symtab.txt + sort -u > $(KERNEL_BUILD_DIR)/mod_symtab.txt + $(TARGET_CROSS)nm -n $(LINUX_DIR)/vmlinux.o | grep ' r __ksymtab' | sed -e 's,........ r __ksymtab_,,' > $(KERNEL_BUILD_DIR)/kernel_symtab.txt + grep -f $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_include.txt + grep -vf $(KERNEL_BUILD_DIR)/mod_symtab.txt $(KERNEL_BUILD_DIR)/kernel_symtab.txt > $(KERNEL_BUILD_DIR)/sym_exclude.txt ( \ echo '#define SYMTAB_KEEP \'; \ - cat $(KERNEL_BUILD_DIR)/symtab.txt | \ + cat $(KERNEL_BUILD_DIR)/sym_include.txt | \ awk '{print "*(__ksymtab." $$$$1 ") \\" }'; \ echo; \ echo '#define SYMTAB_KEEP_GPL \'; \ - cat $(KERNEL_BUILD_DIR)/symtab.txt | \ + cat $(KERNEL_BUILD_DIR)/sym_include.txt | \ awk '{print "*(__ksymtab_gpl." $$$$1 ") \\" }'; \ echo; \ echo '#define SYMTAB_KEEP_STR \'; \ - cat $(KERNEL_BUILD_DIR)/symtab.txt | \ + cat $(KERNEL_BUILD_DIR)/sym_include.txt | \ + awk '{print "*(__ksymtab_strings." $$$$1 ") \\" }'; \ + echo; \ + echo '#define SYMTAB_DISCARD \'; \ + cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \ + awk '{print "*(__ksymtab." $$$$1 ") \\" }'; \ + echo; \ + echo '#define SYMTAB_DISCARD_GPL \'; \ + cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \ + awk '{print "*(__ksymtab_gpl." $$$$1 ") \\" }'; \ + echo; \ + echo '#define SYMTAB_DISCARD_STR \'; \ + cat $(KERNEL_BUILD_DIR)/sym_exclude.txt | \ awk '{print "*(__ksymtab_strings." $$$$1 ") \\" }'; \ echo; \ ) > $$@ diff --git a/target/linux/generic/patches-3.3/220-module_exports.patch b/target/linux/generic/patches-3.3/220-module_exports.patch index be6b6ff9d9..5b87c1a3e3 100644 --- a/target/linux/generic/patches-3.3/220-module_exports.patch +++ b/target/linux/generic/patches-3.3/220-module_exports.patch @@ -1,34 +1,25 @@ --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h -@@ -52,6 +52,27 @@ +@@ -52,6 +52,18 @@ #define LOAD_OFFSET 0 #endif +#ifndef SYMTAB_KEEP_STR ++#define SYMTAB_KEEP *(SORT(___ksymtab+*)) ++#define SYMTAB_KEEP_GPL *(SORT(___ksymtab_gpl+*)) +#define SYMTAB_KEEP_STR *(__ksymtab_strings+*) -+#define SYMTAB_DISCARD_STR -+#else -+#define SYMTAB_DISCARD_STR *(__ksymtab_strings+*) +#endif + -+#ifndef SYMTAB_KEEP -+#define SYMTAB_KEEP *(SORT(___ksymtab+*)) ++#ifndef SYMTAB_DISCARD +#define SYMTAB_DISCARD -+#else -+#define SYMTAB_DISCARD *(SORT(___ksymtab+*)) -+#endif -+ -+#ifndef SYMTAB_KEEP_GPL -+#define SYMTAB_KEEP_GPL *(SORT(___ksymtab_gpl+*)) +#define SYMTAB_DISCARD_GPL -+#else -+#define SYMTAB_DISCARD_GPL *(SORT(___ksymtab_gpl+*)) ++#define SYMTAB_DISCARD_STR +#endif + #ifndef SYMBOL_PREFIX #define VMLINUX_SYMBOL(sym) sym #else -@@ -275,14 +296,14 @@ +@@ -275,14 +287,14 @@ /* Kernel symbol table: Normal symbols */ \ __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ VMLINUX_SYMBOL(__start___ksymtab) = .; \ @@ -45,7 +36,7 @@ VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \ } \ \ -@@ -344,7 +365,7 @@ +@@ -344,7 +356,7 @@ \ /* Kernel symbol table: strings */ \ __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ @@ -54,7 +45,7 @@ } \ \ /* __*init sections */ \ -@@ -676,6 +697,9 @@ +@@ -676,6 +688,9 @@ EXIT_TEXT \ EXIT_DATA \ EXIT_CALL \ @@ -87,3 +78,14 @@ = MODULE_SYMBOL_PREFIX #sym; \ static const struct kernel_symbol __ksymtab_##sym \ __used \ +--- a/scripts/Makefile.build ++++ b/scripts/Makefile.build +@@ -346,7 +346,7 @@ targets += $(extra-y) $(MAKECMDGOALS) $( + # Linker scripts preprocessor (.lds.S -> .lds) + # --------------------------------------------------------------------------- + quiet_cmd_cpp_lds_S = LDS $@ +- cmd_cpp_lds_S = $(CPP) $(cpp_flags) -P -C -U$(ARCH) \ ++ cmd_cpp_lds_S = $(CPP) $(EXTRA_LDSFLAGS) $(cpp_flags) -P -C -U$(ARCH) \ + -D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $< + + $(obj)/%.lds: $(src)/%.lds.S FORCE diff --git a/target/linux/generic/patches-3.6/220-module_exports.patch b/target/linux/generic/patches-3.6/220-module_exports.patch index 8acb18f83d..4383aa28bb 100644 --- a/target/linux/generic/patches-3.6/220-module_exports.patch +++ b/target/linux/generic/patches-3.6/220-module_exports.patch @@ -1,34 +1,25 @@ --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h -@@ -52,6 +52,27 @@ +@@ -52,6 +52,18 @@ #define LOAD_OFFSET 0 #endif +#ifndef SYMTAB_KEEP_STR ++#define SYMTAB_KEEP *(SORT(___ksymtab+*)) ++#define SYMTAB_KEEP_GPL *(SORT(___ksymtab_gpl+*)) +#define SYMTAB_KEEP_STR *(__ksymtab_strings+*) -+#define SYMTAB_DISCARD_STR -+#else -+#define SYMTAB_DISCARD_STR *(__ksymtab_strings+*) +#endif + -+#ifndef SYMTAB_KEEP -+#define SYMTAB_KEEP *(SORT(___ksymtab+*)) ++#ifndef SYMTAB_DISCARD +#define SYMTAB_DISCARD -+#else -+#define SYMTAB_DISCARD *(SORT(___ksymtab+*)) -+#endif -+ -+#ifndef SYMTAB_KEEP_GPL -+#define SYMTAB_KEEP_GPL *(SORT(___ksymtab_gpl+*)) +#define SYMTAB_DISCARD_GPL -+#else -+#define SYMTAB_DISCARD_GPL *(SORT(___ksymtab_gpl+*)) ++#define SYMTAB_DISCARD_STR +#endif + #ifndef SYMBOL_PREFIX #define VMLINUX_SYMBOL(sym) sym #else -@@ -276,14 +297,14 @@ +@@ -276,14 +288,14 @@ /* Kernel symbol table: Normal symbols */ \ __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ VMLINUX_SYMBOL(__start___ksymtab) = .; \ @@ -45,7 +36,7 @@ VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \ } \ \ -@@ -345,7 +366,7 @@ +@@ -345,7 +357,7 @@ \ /* Kernel symbol table: strings */ \ __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ @@ -54,7 +45,7 @@ } \ \ /* __*init sections */ \ -@@ -670,6 +691,9 @@ +@@ -670,6 +682,9 @@ EXIT_TEXT \ EXIT_DATA \ EXIT_CALL \ @@ -87,3 +78,14 @@ = MODULE_SYMBOL_PREFIX #sym; \ static const struct kernel_symbol __ksymtab_##sym \ __used \ +--- a/scripts/Makefile.build ++++ b/scripts/Makefile.build +@@ -348,7 +348,7 @@ targets += $(extra-y) $(MAKECMDGOALS) $( + # Linker scripts preprocessor (.lds.S -> .lds) + # --------------------------------------------------------------------------- + quiet_cmd_cpp_lds_S = LDS $@ +- cmd_cpp_lds_S = $(CPP) $(cpp_flags) -P -C -U$(ARCH) \ ++ cmd_cpp_lds_S = $(CPP) $(EXTRA_LDSFLAGS) $(cpp_flags) -P -C -U$(ARCH) \ + -D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $< + + $(obj)/%.lds: $(src)/%.lds.S FORCE diff --git a/target/linux/generic/patches-3.7/220-module_exports.patch b/target/linux/generic/patches-3.7/220-module_exports.patch index 89da1645d0..fc382c16f9 100644 --- a/target/linux/generic/patches-3.7/220-module_exports.patch +++ b/target/linux/generic/patches-3.7/220-module_exports.patch @@ -1,34 +1,25 @@ --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux.lds.h -@@ -52,6 +52,27 @@ +@@ -52,6 +52,18 @@ #define LOAD_OFFSET 0 #endif +#ifndef SYMTAB_KEEP_STR ++#define SYMTAB_KEEP *(SORT(___ksymtab+*)) ++#define SYMTAB_KEEP_GPL *(SORT(___ksymtab_gpl+*)) +#define SYMTAB_KEEP_STR *(__ksymtab_strings+*) -+#define SYMTAB_DISCARD_STR -+#else -+#define SYMTAB_DISCARD_STR *(__ksymtab_strings+*) +#endif + -+#ifndef SYMTAB_KEEP -+#define SYMTAB_KEEP *(SORT(___ksymtab+*)) ++#ifndef SYMTAB_DISCARD +#define SYMTAB_DISCARD -+#else -+#define SYMTAB_DISCARD *(SORT(___ksymtab+*)) -+#endif -+ -+#ifndef SYMTAB_KEEP_GPL -+#define SYMTAB_KEEP_GPL *(SORT(___ksymtab_gpl+*)) +#define SYMTAB_DISCARD_GPL -+#else -+#define SYMTAB_DISCARD_GPL *(SORT(___ksymtab_gpl+*)) ++#define SYMTAB_DISCARD_STR +#endif + #ifndef SYMBOL_PREFIX #define VMLINUX_SYMBOL(sym) sym #else -@@ -276,14 +297,14 @@ +@@ -276,14 +288,14 @@ /* Kernel symbol table: Normal symbols */ \ __ksymtab : AT(ADDR(__ksymtab) - LOAD_OFFSET) { \ VMLINUX_SYMBOL(__start___ksymtab) = .; \ @@ -45,7 +36,7 @@ VMLINUX_SYMBOL(__stop___ksymtab_gpl) = .; \ } \ \ -@@ -345,7 +366,7 @@ +@@ -345,7 +357,7 @@ \ /* Kernel symbol table: strings */ \ __ksymtab_strings : AT(ADDR(__ksymtab_strings) - LOAD_OFFSET) { \ @@ -54,7 +45,7 @@ } \ \ /* __*init sections */ \ -@@ -679,6 +700,9 @@ +@@ -679,6 +691,9 @@ EXIT_TEXT \ EXIT_DATA \ EXIT_CALL \ @@ -87,3 +78,14 @@ = MODULE_SYMBOL_PREFIX #sym; \ static const struct kernel_symbol __ksymtab_##sym \ __used \ +--- a/scripts/Makefile.build ++++ b/scripts/Makefile.build +@@ -348,7 +348,7 @@ targets += $(extra-y) $(MAKECMDGOALS) $( + # Linker scripts preprocessor (.lds.S -> .lds) + # --------------------------------------------------------------------------- + quiet_cmd_cpp_lds_S = LDS $@ +- cmd_cpp_lds_S = $(CPP) $(cpp_flags) -P -C -U$(ARCH) \ ++ cmd_cpp_lds_S = $(CPP) $(EXTRA_LDSFLAGS) $(cpp_flags) -P -C -U$(ARCH) \ + -D__ASSEMBLY__ -DLINKER_SCRIPT -o $@ $< + + $(obj)/%.lds: $(src)/%.lds.S FORCE -- 2.25.1