10000 cp: symlink-overwrite error-priority is wrong · Issue #6266 · uutils/coreutils · GitHub
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cp: symlink-overwrite error-priority is wrong #6266

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BenWiederhake opened this issue Apr 24, 2024 · 0 comments · Fixed by #6586
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cp: symlink-overwrite error-priority is wrong #6266

BenWiederhake opened this issue Apr 24, 2024 · 0 comments · Fixed by #6586
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@BenWiederhake
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Steps to reproduce:

  • Create two regular files, README.md and good/README.md, and a directory target/ that does not contain anything named README.md.
  • chdir into target/.
  • Try to copy in symlink-mode the files ../README.md and ../good/README.md to the current directory

Expected result: The first copy is successful, the second copy is refused with an error message that acknowledges that README.md was just created and must not be recreated.

Actual result: The first copy is successful, the second copy is refused with an error message that treats the newly-created README.md symlink as a file that always existed.

This also feels like it might lead to some other unexpected behavior, but I can't get it to do something worse like overwrite pointed-to files.

Demonstrator:

coreutils$ cd target/
coreutils/target$ rm -f README.md && ../../gnu/src/cp -s ../README.md ../good/README.md .
../../gnu/src/cp: will not overwrite just-created './README.md' with '../good/README.md'
[$? = 1]
coreutils/target$ rm -f README.md && cargo run cp -s ../README.md ../good/README.md .                
cp: will not copy '../good/README.md' through just-created symlink './README.md'
[$? = 1]
$

Found while reviewing #6208
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cp: fix symlink-overwrite error-priority Luv-Ray/coreutils
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