[PATCH v4] ld.so: Replace DL_RO_DYN_SECTION with dl_relocate_ld

[Florian Weimer]

* H. J. Lu:

> We can't relocate entries in dynamic section if it is readonly:
>
> 1. Add a l_ld_readonly field to struct link_map to indicate if dynamic
> section is readonly and set it based on p_flags of PT_DYNAMIC segment.
> 2. Replace DL_RO_DYN_SECTION with dl_relocate_ld to decide if dynamic
> section should be relocated.
> 3. Remove DL_RO_DYN_TEMP_CNT.
> 4. Don't use a static dynamic section to make readonly dynamic section
> in vDSO writable.
> 5. Remove the temp argument from elf_get_dynamic_info.

I don't have any objections to this patch.

Thanks,
Florian