diff options
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/Makefile | 15 | ||||
| -rw-r--r-- | elf/dl-support.c | 19 |
2 files changed, 12 insertions, 22 deletions
diff --git a/elf/Makefile b/elf/Makefile index 66419becb8..63384f423a 100644 --- a/elf/Makefile +++ b/elf/Makefile @@ -29,7 +29,8 @@ routines = $(dl-routines) dl-open dl-close dl-support dl-iteratephdr \ # profiled libraries. dl-routines = $(addprefix dl-,load cache lookup object reloc deps \ runtime error init fini debug misc \ - version profile conflict tls origin) + version profile conflict tls origin \ + execstack) 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 = $(all-dl-routines) dl-support enbl-secure \ @@ -80,6 +81,7 @@ distribute := rtld-Rules \ reldep9.c reldep9mod1.c reldep9mod2.c reldep9mod3.c \ tst-array1.exp tst-array2.exp tst-array4.exp \ tst-array2dep.c \ + tst-execstack-mod.c \ check-textrel.c dl-sysdep.h CFLAGS-dl-runtime.c = -fexceptions -fasynchronous-unwind-tables @@ -148,7 +150,8 @@ tests += loadtest restest1 preloadtest loadfail multiload origtest resolvfail \ neededtest3 neededtest4 unload2 lateglobal initfirst global \ restest2 next dblload dblunload reldep5 reldep6 reldep7 reldep8 \ circleload1 tst-tls3 tst-tls4 tst-tls5 tst-tls6 tst-tls7 tst-tls8 \ - tst-tls10 tst-tls11 tst-tls12 tst-tls13 tst-tls14 + tst-tls10 tst-tls11 tst-tls12 tst-tls13 tst-tls14 \ + tst-execstack # reldep9 test-srcs = tst-pathopt tests-vis-yes = vismain @@ -175,7 +178,8 @@ modules-names = testobj1 testobj2 testobj3 testobj4 testobj5 testobj6 \ circlemod1 circlemod1a circlemod2 circlemod2a \ circlemod3 circlemod3a \ reldep8mod1 reldep8mod2 reldep8mod3 \ - reldep9mod1 reldep9mod2 reldep9mod3 + reldep9mod1 reldep9mod2 reldep9mod3 \ + tst-execstack-mod ifeq (yes,$(have-initfini-array)) modules-names += tst-array2dep endif @@ -648,6 +652,11 @@ $(objpfx)tst-tls9-static: $(common-objpfx)dlfcn/libdl.a $(objpfx)tst-tls9-static.out: $(objpfx)tst-tlsmod5.so $(objpfx)tst-tlsmod6.so endif +$(objpfx)tst-execstack: $(libdl) +$(objpfx)tst-execstack.out: $(objpfx)tst-execstack-mod.so +LDFLAGS-tst-execstack = -Wl,-z,noexecstack +LDFLAGS-tst-execstack-mod = -Wl,-z,execstack + $(objpfx)tst-array1.out: $(objpfx)tst-array1 $(elf-objpfx)$(rtld-installed-name) \ --library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \ diff --git a/elf/dl-support.c b/elf/dl-support.c index 6a02e4ea1f..52447f489a 100644 --- a/elf/dl-support.c +++ b/elf/dl-support.c @@ -125,16 +125,6 @@ ElfW(Phdr) *_dl_phdr; size_t _dl_phnum; unsigned long int _dl_hwcap __attribute__ ((nocommon)); -/* Prevailing state of the stack, PF_X indicating it's executable. */ -ElfW(Word) _dl_stack_flags = PF_R|PF_W|PF_X; - -/* If loading a shared object requires that we make the stack executable - when it was not, we do it by calling this function. - It returns an errno code or zero on success. */ -int (*_dl_make_stack_executable_hook) (void) internal_function - = _dl_make_stack_executable; - - #ifdef NEED_DL_SYSINFO /* Needed for improved syscall handling on at least x86/Linux. */ uintptr_t _dl_sysinfo = DL_SYSINFO_DEFAULT; @@ -270,15 +260,6 @@ _dl_non_dynamic_init (void) /* Now determine the length of the platform string. */ if (_dl_platform != NULL) _dl_platformlen = strlen (_dl_platform); - - /* Scan for a program header telling us the stack is nonexecutable. */ - if (_dl_phdr != NULL) - for (uint_fast16_t i = 0; i < _dl_phnum; ++i) - if (_dl_phdr[i].p_type == PT_GNU_STACK) - { - _dl_stack_flags = _dl_phdr[i].p_flags; - break; - } } |