Do not let modifyRPath taint shared strings in strtab. Fix #315#481
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bors[bot] merged 4 commits intoNixOS:masterfrom Apr 23, 2023
Merged
Do not let modifyRPath taint shared strings in strtab. Fix #315#481bors[bot] merged 4 commits intoNixOS:masterfrom
bors[bot] merged 4 commits intoNixOS:masterfrom
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In this PR I add a method to iterate over all fields of the ELF file (as best as we can) that represent indexes in strtable.
I use this method to check if the RPATH string being changed in
modifyRPATHis shared among multiple fields. If it's shared, don't let patchelf taint the field.We hope that patchelf continues to taint the vast majority of rpaths (as needed by Nix) but only refrain from doing so when it will break the binary.
Note: The first commit changes the section tainting from X to Z so I can look for the Xs in my tests.