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Consider returning /private/tmp instead of /tmp on macOS with std::env::temp_dir() #99608

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poliorcetics opened this issue Jul 22, 2022 · 2 comments · May be fixed by #100824
Open

Consider returning /private/tmp instead of /tmp on macOS with std::env::temp_dir() #99608

poliorcetics opened this issue Jul 22, 2022 · 2 comments · May be fixed by #100824
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O-macos Operating system: macOS T-libs-api Relevant to the library API team, which will review and decide on the PR/issue.

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@poliorcetics
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poliorcetics commented Jul 22, 2022 •
edited

The first is a regular directory, the second is a symlink to the first. This can lead to software failing in strange and unexpected ways (especially during testing, with the tempfile crate or similar) if symlinks are forbidden, e.g. I recently encountered the case with SQLite

Since /tmp -> /private/tmp software that was already working correctly should not start to fail unexpectedly. Software that was failing/had to workaround this will start working correctly.

macos-12.4 $ /bin/ls -la /tmp
lrwxr-xr-x@ 1 root  wheel  11  9 mai 23:30 /tmp -> private/tmp
@poliorcetics poliorcetics changed the title Consider returning /private/tmp instead of `tmp Consider returning /private/tmp instead of /tmp on macOS with std::env::temp_dir() Jul 22, 2022
devnexen added a commit to devnexen/rust that referenced this issue Aug 6, 2022
@devnexen
env::temp_dir returns /private/tmp on Apple instead while /tmp is
31e5194 
a symlink in fact.

ref rust-lang#99608
@devnexen devnexen mentioned this issue Aug 6, 2022
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@clubby789
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@rustbot label +T-libs-api +O-macos

@rustbot rustbot added O-macos Operating system: macOS T-libs-api Relevant to the library API team, which will review and decide on the PR/issue. labels Mar 31, 2023
@edmorley
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See also #100196 and #100824.

@dtolnay dtolnay linked a pull request Jan 26, 2024 that will close this issue
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use confstr(_CS_DARWIN_USER_TEMP_DIR, ...) as a TMPDIR fallback on Darwin thomcc/rust
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@edmorley @poliorcetics @clubby789 @rustbot