diff options
| author | Christophe Lyon <christophe.lyon@st.com> | 2018-07-04 17:55:15 +0200 |
|---|---|---|
| committer | Waldemar Brodkorb <wbrodkorb@conet.de> | 2018-08-10 16:01:21 +0200 |
| commit | 57436cad9cc452eeeeafe007705daa9752835b14 (patch) | |
| tree | 2a0f9ea119453a6c64f5f085d96dfdb41cd6de82 | |
| parent | 685a704f0265ef4e35300310c8f3d03f9fea3fbe (diff) | |
rtld: Do not protect RELRO segments when we don't use an MMU.
Without MMU, we cannot mark memory regions as read-only.
* ldso/ldso/dl-elf.c (_dl_protect_relro): Do nothing if
__ARCH_USE_MMU__ is defined.
Signed-off-by: Christophe Lyon <christophe.lyon@st.com>
| -rw-r--r-- | ldso/ldso/dl-elf.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/ldso/ldso/dl-elf.c b/ldso/ldso/dl-elf.c index d264e6a49..1768b5bb8 100644 --- a/ldso/ldso/dl-elf.c +++ b/ldso/ldso/dl-elf.c @@ -117,6 +117,7 @@ int _dl_unmap_cache(void) void _dl_protect_relro (struct elf_resolve *l) { +#ifdef __ARCH_USE_MMU__ ElfW(Addr) base = (ElfW(Addr)) DL_RELOC_ADDR(l->loadaddr, l->relro_addr); ElfW(Addr) start = (base & PAGE_ALIGN); ElfW(Addr) end = ((base + l->relro_size) & PAGE_ALIGN); @@ -126,6 +127,7 @@ _dl_protect_relro (struct elf_resolve *l) _dl_dprintf(2, "%s: cannot apply additional memory protection after relocation", l->libname); _dl_exit(0); } +#endif } /* This function's behavior must exactly match that |