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authorH.J. Lu <hjl.tools@gmail.com>2021-09-16 08:15:29 -0700
committerH.J. Lu <hjl.tools@gmail.com>2021-09-22 11:12:43 -0700
commitb413280cfb16834450f66f554bc0d618bb513851 (patch)
treefda69976f225c3085c1da42c9b9ab191fae6f61f /sysdeps/i386
parent4eff749e8f06d8f6c5fc8b37299e9e0409ed80ec (diff)
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ld.so: Replace DL_RO_DYN_SECTION with dl_relocate_ld [BZ #28340]
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.

This fixes BZ #28340.

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
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