-# Copyright (C) 1995-2016 Free Software Foundation, Inc.
+# Copyright (C) 1995-2018 Free Software Foundation, Inc.
# This file is part of the GNU C Library.
# The GNU C Library is free software; you can redistribute it and/or
headers = elf.h bits/elfclass.h link.h bits/link.h
routines = $(all-dl-routines) dl-support dl-iteratephdr \
dl-addr dl-addr-obj enbl-secure dl-profstub \
- dl-origin dl-libc dl-sym dl-sysdep dl-error
+ dl-origin dl-libc dl-sym dl-sysdep dl-error \
+ dl-reloc-static-pie
# The core dynamic linking functions are in libc for the static and
# profiled libraries.
dl-routines = $(addprefix dl-,load lookup object reloc deps hwcaps \
runtime init fini debug misc \
- version profile conflict tls origin scope \
- execstack caller open close trampoline)
+ version profile tls origin scope \
+ execstack open close trampoline \
+ exception sort-maps)
ifeq (yes,$(use-ldconfig))
dl-routines += dl-cache
endif
+
+ifneq (no,$(have-tunables))
+dl-routines += dl-tunables
+tunables-type = $(addprefix TUNABLES_FRONTEND_,$(have-tunables))
+CPPFLAGS-dl-tunables.c += -DTUNABLES_FRONTEND=$(tunables-type)
+
+# Make sure that the compiler does not insert any library calls in tunables
+# code paths.
+ifeq (yes,$(have-loop-to-function))
+CFLAGS-dl-tunables.c += -fno-tree-loop-distribute-patterns
+endif
+endif
+
all-dl-routines = $(dl-routines) $(sysdep-dl-routines)
# But they are absent from the shared libc, because that code is in ld.so.
elide-routines.os = $(all-dl-routines) dl-support enbl-secure dl-origin \
- dl-sysdep
-shared-only-routines += dl-caller
+ dl-sysdep dl-exception dl-reloc-static-pie
# ld.so uses those routines, plus some special stuff for being the program
# interpreter and operating independent of libc.
rtld-routines = rtld $(all-dl-routines) dl-sysdep dl-environ dl-minimal \
- dl-error-minimal
+ dl-error-minimal dl-conflict
all-rtld-routines = $(rtld-routines) $(sysdep-rtld-routines)
-CFLAGS-dl-runtime.c = -fexceptions -fasynchronous-unwind-tables
-CFLAGS-dl-lookup.c = -fexceptions -fasynchronous-unwind-tables
-CFLAGS-dl-iterate-phdr.c = $(uses-callbacks)
+CFLAGS-dl-runtime.c += -fexceptions -fasynchronous-unwind-tables
+CFLAGS-dl-lookup.c += -fexceptions -fasynchronous-unwind-tables
+CFLAGS-dl-iterate-phdr.c += $(uses-callbacks)
+
+# Compile rtld itself without stack protection.
+# Also compile all routines in the static library that are elided from
+# the shared libc because they are in libc.a in the same way.
+
+define elide-stack-protector
+$(if $(filter $(@F),$(patsubst %,%$(1),$(2))), $(no-stack-protector))
+endef
+
+CFLAGS-.o += $(call elide-stack-protector,.o,$(elide-routines.os))
+CFLAGS-.op += $(call elide-stack-protector,.op,$(elide-routines.os))
+CFLAGS-.os += $(call elide-stack-protector,.os,$(all-rtld-routines))
ifeq ($(unwind-find-fde),yes)
routines += unwind-dw2-fde-glibc
ldconfig-modules := cache readlib xmalloc xstrdup chroot_canon static-stubs
extra-objs += $(ldconfig-modules:=.o)
+others-extras = $(ldconfig-modules)
endif
endif
$(do-install-program)
endif
-tests = tst-tls1 tst-tls2 tst-tls9 tst-leaks1 \
+tests-static-normal := tst-leaks1-static tst-array1-static tst-array5-static \
+ tst-dl-iter-static \
+ tst-tlsalign-static tst-tlsalign-extern-static \
+ tst-linkall-static tst-env-setuid tst-env-setuid-tunables
+tests-static-internal := tst-tls1-static tst-tls2-static \
+ tst-ptrguard1-static tst-stackguard1-static \
+ tst-tls1-static-non-pie tst-libc_dlvsym-static
+
+CRT-tst-tls1-static-non-pie := $(csu-objpfx)crt1.o
+tst-tls1-static-non-pie-no-pie = yes
+
+tests := tst-tls9 tst-leaks1 \
tst-array1 tst-array2 tst-array3 tst-array4 tst-array5 \
tst-auxv
-tests-static = tst-tls1-static tst-tls2-static tst-stackguard1-static \
- tst-leaks1-static tst-array1-static tst-array5-static \
- tst-ptrguard1-static tst-dl-iter-static \
- tst-tlsalign-static tst-tlsalign-extern-static \
- tst-linkall-static
+tests-internal := tst-tls1 tst-tls2 $(tests-static-internal)
+tests-static := $(tests-static-normal) $(tests-static-internal)
+
ifeq (yes,$(build-shared))
tests-static += tst-tls9-static
tst-tls9-static-ENV = \
LD_LIBRARY_PATH=$(objpfx):$(common-objpfx):$(common-objpfx)dlfcn
-endif
-tests += $(tests-static)
-ifeq (yes,$(build-shared))
-tests += loadtest restest1 preloadtest loadfail multiload origtest resolvfail \
- constload1 order noload filter unload \
+
+tests += restest1 preloadtest loadfail multiload origtest resolvfail \
+ constload1 order noload filter \
reldep reldep2 reldep3 reldep4 nodelete nodelete2 \
- nodlopen nodlopen2 neededtest neededtest2 \
- neededtest3 neededtest4 unload2 lateglobal initfirst global \
+ nodlopen nodlopen2 lateglobal initfirst global \
restest2 next dblload dblunload reldep5 reldep6 reldep7 reldep8 \
- circleload1 tst-tls3 tst-tls4 tst-tls5 tst-tls6 tst-tls7 tst-tls8 \
+ tst-tls4 tst-tls5 \
tst-tls10 tst-tls11 tst-tls12 tst-tls13 tst-tls14 tst-tls15 \
tst-tls16 tst-tls17 tst-tls18 tst-tls19 tst-tls-dlinfo \
- tst-align tst-align2 $(tests-execstack-$(have-z-execstack)) \
+ tst-align tst-align2 \
tst-dlmodcount tst-dlopenrpath tst-deep1 \
- tst-dlmopen1 tst-dlmopen2 tst-dlmopen3 \
+ tst-dlmopen1 tst-dlmopen3 \
unload3 unload4 unload5 unload6 unload7 unload8 tst-global1 order2 \
tst-audit1 tst-audit2 tst-audit8 tst-audit9 \
- tst-stackguard1 tst-addr1 tst-thrlock \
+ tst-addr1 tst-thrlock \
tst-unique1 tst-unique2 $(if $(CXX),tst-unique3 tst-unique4 \
tst-nodelete) \
tst-initorder tst-initorder2 tst-relsort1 tst-null-argv \
- tst-ptrguard1 tst-tlsalign tst-tlsalign-extern tst-nodelete-opened \
+ tst-tlsalign tst-tlsalign-extern tst-nodelete-opened \
tst-nodelete2 tst-audit11 tst-audit12 tst-dlsym-error tst-noload \
- tst-latepthread tst-tls-manydynamic
+ tst-latepthread tst-tls-manydynamic tst-nodelete-dlclose \
+ tst-debug1 tst-main1 tst-absolute-sym tst-big-note
# reldep9
+tests-internal += loadtest unload unload2 circleload1 \
+ neededtest neededtest2 neededtest3 neededtest4 \
+ tst-tls3 tst-tls6 tst-tls7 tst-tls8 tst-dlmopen2 \
+ tst-ptrguard1 tst-stackguard1 tst-libc_dlvsym
ifeq ($(build-hardcoded-path-in-tests),yes)
tests += tst-dlopen-aout
-LDFLAGS-tst-dlopen-aout = $(no-pie-ldflag)
+tst-dlopen-aout-no-pie = yes
endif
test-srcs = tst-pathopt
selinux-enabled := $(shell cat /selinux/enforce 2> /dev/null)
tests-execstack-yes = tst-execstack tst-execstack-needed tst-execstack-prog
endif
endif
+tests += $(tests-execstack-$(have-z-execstack))
ifeq ($(run-built-tests),yes)
tests-special += $(objpfx)tst-leaks1-mem.out \
$(objpfx)tst-leaks1-static-mem.out $(objpfx)noload-mem.out \
tst-tlsalign-lib tst-nodelete-opened-lib tst-nodelete2mod \
tst-audit11mod1 tst-audit11mod2 tst-auditmod11 \
tst-audit12mod1 tst-audit12mod2 tst-audit12mod3 tst-auditmod12 \
- tst-latepthreadmod $(tst-tls-many-dynamic-modules)
+ tst-latepthreadmod $(tst-tls-many-dynamic-modules) \
+ tst-nodelete-dlclose-dso tst-nodelete-dlclose-plugin \
+ tst-main1mod tst-libc_dlvsym-dso tst-absolute-sym-lib \
+ tst-big-note-lib
+
ifeq (yes,$(have-mtls-dialect-gnu2))
tests += tst-gnu2-tls1
modules-names += tst-gnu2-tls1mod
modules-names += tst-piemod1
tests += tst-pie1 tst-pie2
tests-pie += tst-pie1 tst-pie2
+ifeq (yes,$(have-protected-data))
tests += vismain
tests-pie += vismain
-CFLAGS-vismain.c = $(PIE-ccflag)
+CFLAGS-vismain.c += $(PIE-ccflag)
+endif
endif
modules-execstack-yes = tst-execstack-mod
extra-test-objs += $(addsuffix .os,$(strip $(modules-names)))
-# We need this variable to be sure the test modules get the right CPPFLAGS.
-test-extras += $(modules-names)
# filtmod1.so has a special rule
modules-names-nobuild := filtmod1
+tests += $(tests-static)
+
ifneq (no,$(multi-arch))
-tests-static += ifuncmain1static ifuncmain1picstatic \
+tests-ifuncstatic := ifuncmain1static ifuncmain1picstatic \
ifuncmain2static ifuncmain2picstatic \
ifuncmain4static ifuncmain4picstatic \
ifuncmain5static ifuncmain5picstatic \
ifuncmain7static ifuncmain7picstatic
-
+tests-static += $(tests-ifuncstatic)
+tests-internal += $(tests-ifuncstatic)
ifeq (yes,$(build-shared))
-tests += ifuncmain1 ifuncmain1pic ifuncmain1vis ifuncmain1vispic \
+tests-internal += \
+ ifuncmain1 ifuncmain1pic ifuncmain1vis ifuncmain1vispic \
ifuncmain1staticpic \
ifuncmain2 ifuncmain2pic ifuncmain3 ifuncmain4 \
ifuncmain5 ifuncmain5pic ifuncmain5staticpic \
ifunc-test-modules = ifuncdep1 ifuncdep1pic ifuncdep2 ifuncdep2pic \
ifuncdep5 ifuncdep5pic
extra-test-objs += $(ifunc-test-modules:=.o)
-test-extras += $(ifunc-test-modules)
+test-internal-extras += $(ifunc-test-modules)
ifeq (yes,$(have-fpie))
ifunc-pie-tests = ifuncmain1pie ifuncmain1vispie ifuncmain1staticpie \
ifuncmain5pie ifuncmain6pie ifuncmain7pie
-tests += $(ifunc-pie-tests)
+tests-internal += $(ifunc-pie-tests)
tests-pie += $(ifunc-pie-tests)
endif
modules-names += ifuncmod1 ifuncmod3 ifuncmod5 ifuncmod6
tests-special += $(objpfx)tst-pathopt.out $(objpfx)tst-rtld-load-self.out
endif
tests-special += $(objpfx)check-textrel.out $(objpfx)check-execstack.out \
- $(objpfx)check-localplt.out
+ $(objpfx)check-localplt.out $(objpfx)check-initfini.out
endif
ifeq ($(run-built-tests),yes)
ifeq ($(have-glob-dat-reloc),yes)
tests += tst-prelink
+# Don't compile tst-prelink.c with PIE for GLOB_DAT relocation.
+CFLAGS-tst-prelink.c += -fno-pie
+tst-prelink-no-pie = yes
ifeq ($(run-built-tests),yes)
tests-special += $(objpfx)tst-prelink-cmp.out
endif
# unit test driver must be able to link with the shared object
# that is going to eventually go into an installed DSO.
ifeq (yesyes,$(have-fpie)$(build-shared))
-tests += tst-_dl_addr_inside_object
+tests-internal += tst-_dl_addr_inside_object
tests-pie += tst-_dl_addr_inside_object
$(objpfx)tst-_dl_addr_inside_object: $(objpfx)dl-addr-obj.os
CFLAGS-tst-_dl_addr_inside_object.c += $(PIE-ccflag)
# By default tst-linkall-static should try to use crypt routines to test
# static libcrypt use.
-CFLAGS-tst-linkall-static.c = -DUSE_CRYPT=1
+CFLAGS-tst-linkall-static.c += -DUSE_CRYPT=1
# However, if we are using NSS crypto and we don't have a static
# library, then we exclude the use of crypt functions in the test.
# We similarly exclude libcrypt.a from the static link (see below).
ifeq (yesno,$(nss-crypt)$(static-nss-crypt))
-CFLAGS-tst-linkall-static.c = -DUSE_CRYPT=0
+CFLAGS-tst-linkall-static.c += -UUSE_CRYPT -DUSE_CRYPT=0
endif
include ../Rules
# are compiled with special flags, and puts these modules into rtld-libc.a
# for us. Then we do the real link using rtld-libc.a instead of libc_pic.a.
+# If the compiler can do SSP, build the mapfile with dummy __stack_chk_fail
+# and __stack_chk_fail_local symbols defined, to prevent the real things
+# being dragged into rtld even though rtld is never built with stack-
+# protection.
+
+ifeq ($(have-ssp),yes)
+dummy-stack-chk-fail := -Wl,--defsym='__stack_chk_fail=0' \
+ -Wl,--defsym='__stack_chk_fail_local=0'
+else
+dummy-stack-chk-fail :=
+endif
+
$(objpfx)librtld.map: $(objpfx)dl-allobjs.os $(common-objpfx)libc_pic.a
@-rm -f $@T
- $(reloc-link) -o $@.o '-Wl,-(' $^ -lgcc '-Wl,-)' -Wl,-Map,$@T
+ $(reloc-link) -o $@.o $(dummy-stack-chk-fail) \
+ '-Wl,-(' $^ -lgcc '-Wl,-)' -Wl,-Map,$@T
rm -f $@.o
mv -f $@T $@
echo '#define DL_DST_LIB "$(notdir $(slibdir))"' >> ${@:st=T}
$(move-if-change) ${@:st=T} ${@:st=h}
touch $@
-CPPFLAGS-dl-load.c = -I$(objpfx). -I$(csu-objpfx).
+CPPFLAGS-dl-load.c += -I$(objpfx). -I$(csu-objpfx).
ifeq (yes,$(build-shared))
$(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force)
$(objpfx)ldconfig: $(ldconfig-modules:%=$(objpfx)%.o)
SYSCONF-FLAGS := -D'SYSCONFDIR="$(sysconfdir)"'
-CFLAGS-ldconfig.c = $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' \
+CFLAGS-ldconfig.c += $(SYSCONF-FLAGS) -D'LIBDIR="$(libdir)"' \
-D'SLIBDIR="$(slibdir)"'
libof-ldconfig = ldconfig
-CFLAGS-dl-cache.c = $(SYSCONF-FLAGS)
-CFLAGS-cache.c = $(SYSCONF-FLAGS)
-CFLAGS-rtld.c = $(SYSCONF-FLAGS)
+CFLAGS-dl-cache.c += $(SYSCONF-FLAGS)
+CFLAGS-cache.c += $(SYSCONF-FLAGS)
+CFLAGS-rtld.c += $(SYSCONF-FLAGS)
cpp-srcs-left := $(all-rtld-routines:=.os)
lib := rtld
-include $(patsubst %,$(..)cppflags-iterator.mk,$(cpp-srcs-left))
+include $(patsubst %,$(..)libof-iterator.mk,$(cpp-srcs-left))
test-modules = $(addprefix $(objpfx),$(addsuffix .so,$(strip $(modules-names))))
generated += $(addsuffix .so,$(strip $(modules-names)))
$(objpfx)multiload: $(libdl)
LDFLAGS-multiload = -rdynamic
-CFLAGS-multiload.c = -DOBJDIR=\"$(elf-objpfx)\"
+CFLAGS-multiload.c += -DOBJDIR=\"$(elf-objpfx)\"
$(objpfx)multiload.out: $(objpfx)testobj1.so
$< -Wl,-F,$(objpfx)filtmod2.so
$(objpfx)filter: $(objpfx)filtmod1.so
+# This does not link against libc.
+CFLAGS-filtmod1.c += $(no-stack-protector)
+
$(objpfx)unload: $(libdl)
$(objpfx)unload.out: $(objpfx)unloadmod.so
$(objpfx)tst-pathopt.out: tst-pathopt.sh $(objpfx)tst-pathopt \
$(objpfx)pathoptobj.so
$(SHELL) $< $(common-objpfx) '$(test-wrapper-env)' \
- '$(run-program-env)'; \
+ '$(run-program-env)' > $@; \
$(evaluate-test)
$(objpfx)tst-rtld-load-self.out: tst-rtld-load-self.sh $(objpfx)ld.so
$(objpfx)tst-tls19: $(libdl)
$(objpfx)tst-tls19.out: $(objpfx)tst-tls19mod1.so
-CFLAGS-tst-align.c = $(stack-align-test-flags)
-CFLAGS-tst-align2.c = $(stack-align-test-flags)
-CFLAGS-tst-alignmod.c = $(stack-align-test-flags)
-CFLAGS-tst-alignmod2.c = $(stack-align-test-flags)
+CFLAGS-tst-align.c += $(stack-align-test-flags)
+CFLAGS-tst-align2.c += $(stack-align-test-flags)
+CFLAGS-tst-alignmod.c += $(stack-align-test-flags)
+CFLAGS-tst-alignmod2.c += $(stack-align-test-flags)
$(objpfx)tst-align: $(libdl)
$(objpfx)tst-align.out: $(objpfx)tst-alignmod.so
$(objpfx)tst-align2: $(objpfx)tst-alignmod2.so
ifeq ($(have-z-execstack),yes)
$(objpfx)tst-execstack: $(libdl)
$(objpfx)tst-execstack.out: $(objpfx)tst-execstack-mod.so
-CPPFLAGS-tst-execstack.c = -DUSE_PTHREADS=0
+CPPFLAGS-tst-execstack.c += -DUSE_PTHREADS=0
LDFLAGS-tst-execstack = -Wl,-z,noexecstack
LDFLAGS-tst-execstack-mod = -Wl,-z,execstack
$(evaluate-test)
endif
+$(all-built-dso:=.dynsym): %.dynsym: %
+ @rm -f $@T
+ LC_ALL=C $(READELF) -W --dyn-syms $< > $@T
+ test -s $@T
+ mv -f $@T $@
+common-generated += $(all-built-dso:$(common-objpfx)%=%.dynsym)
+
+$(objpfx)check-initfini.out: $(..)scripts/check-initfini.awk \
+ $(all-built-dso:=.dynsym)
+ LC_ALL=C $(AWK) -f $^ > $@; \
+ $(evaluate-test)
+generated += check-initfini.out
+
$(objpfx)tst-dlopenrpathmod.so: $(libdl)
$(objpfx)tst-dlopenrpath: $(objpfx)tst-dlopenrpathmod.so $(libdl)
CFLAGS-tst-dlopenrpath.c += -DPFX=\"$(objpfx)\"
tst-ptrguard1-ARGS = --command "$(host-test-program-cmd) --child"
# When built statically, the pointer guard interface uses
# __pointer_chk_guard_local.
-CFLAGS-tst-ptrguard1-static.c = -DPTRGUARD_LOCAL
+CFLAGS-tst-ptrguard1-static.c += -DPTRGUARD_LOCAL
tst-ptrguard1-static-ARGS = --command "$(objpfx)tst-ptrguard1-static --child"
$(objpfx)tst-leaks1: $(libdl)
-Wl,-z,lazy -Wl,--unresolved-symbols=ignore-all
# Do not optimize sibling calls as the test relies on a JMP_SLOT relocation for
# function this_function_is_not_defined.
-CFLAGS-tst-latepthreadmod.c = -fno-optimize-sibling-calls
+CFLAGS-tst-latepthreadmod.c += -fno-optimize-sibling-calls
$(objpfx)tst-latepthreadmod.so: $(shared-thread-library)
$(objpfx)tst-latepthread: $(libdl)
$(objpfx)tst-latepthread.out: $(objpfx)tst-latepthreadmod.so
$(evaluate-test)
$(objpfx)tst-ldconfig-X.out : tst-ldconfig-X.sh $(objpfx)ldconfig
- $(SHELL) $< '$(common-objpfx)' '$(test-wrapper)' '$(test-wrapper-env)' > $@; \
+ $(SHELL) $< '$(common-objpfx)' '$(test-wrapper-env)' \
+ '$(run-program-env)' > $@; \
$(evaluate-test)
$(objpfx)tst-dlsym-error: $(libdl)
$(objpfx)tst-linkall-static: \
$(common-objpfx)crypt/libcrypt.a
endif
+
+# The application depends on the DSO, and the DSO loads the plugin.
+# The plugin also depends on the DSO. This creates the circular
+# dependency via dlopen that we're testing to make sure works.
+$(objpfx)tst-nodelete-dlclose-dso.so: $(libdl)
+$(objpfx)tst-nodelete-dlclose-plugin.so: $(objpfx)tst-nodelete-dlclose-dso.so
+$(objpfx)tst-nodelete-dlclose: $(objpfx)tst-nodelete-dlclose-dso.so
+$(objpfx)tst-nodelete-dlclose.out: $(objpfx)tst-nodelete-dlclose-dso.so \
+ $(objpfx)tst-nodelete-dlclose-plugin.so
+
+tst-env-setuid-ENV = MALLOC_CHECK_=2 MALLOC_MMAP_THRESHOLD_=4096 \
+ LD_HWCAP_MASK=0x1
+tst-env-setuid-tunables-ENV = \
+ GLIBC_TUNABLES=glibc.malloc.check=2:glibc.malloc.mmap_threshold=4096
+
+$(objpfx)tst-debug1: $(libdl)
+$(objpfx)tst-debug1.out: $(objpfx)tst-debug1mod1.so
+
+$(objpfx)tst-debug1mod1.so: $(objpfx)testobj1.so
+ $(OBJCOPY) --only-keep-debug $< $@
+
+$(objpfx)tst-main1: $(objpfx)tst-main1mod.so
+CRT-tst-main1 := $(csu-objpfx)crt1.o
+tst-main1-no-pie = yes
+LDLIBS-tst-main1 = $(libsupport)
+tst-main1mod.so-no-z-defs = yes
+
+LDLIBS-tst-absolute-sym-lib.so = tst-absolute-sym-lib.lds
+$(objpfx)tst-absolute-sym-lib.so: $(LDLIBS-tst-absolute-sym-lib.so)
+$(objpfx)tst-absolute-sym: $(objpfx)tst-absolute-sym-lib.so
+
+# Both the main program and the DSO for tst-libc_dlvsym need to link
+# against libdl.
+$(objpfx)tst-libc_dlvsym: $(libdl)
+$(objpfx)tst-libc_dlvsym-dso.so: $(libsupport) $(libdl)
+$(objpfx)tst-libc_dlvsym.out: $(objpfx)tst-libc_dlvsym-dso.so
+$(objpfx)tst-libc_dlvsym-static: $(common-objpfx)dlfcn/libdl.a
+tst-libc_dlvsym-static-ENV = \
+ LD_LIBRARY_PATH=$(objpfx):$(common-objpfx):$(common-objpfx)dlfcn
+$(objpfx)tst-libc_dlvsym-static.out: $(objpfx)tst-libc_dlvsym-dso.so
+
+$(objpfx)tst-big-note: $(objpfx)tst-big-note-lib.so