fix: stop deleting $CARGO_HOME during uninstall by Cloud0310 · Pull Request #4861 · rust-lang/rustup

Cloud0310 · 2026-05-18T07:21:32Z

fix #285
This PR fix the cargo bin nuke and the path removing possilble toutoc issue.
Here's the implementation details:

compare cargo bin dir content to rustup binary, if it's a link, remove it
then, we remove the rustup binary, on success, we then remove the cargo bin from path

This prevents rustup self uninstall from nuking out the $CARGO_HOME/bin and possible toctou problem of removing up the path.

Cloud0310 · 2026-05-19T13:42:17Z

I think I may need more tests against this PR, this includes:

$CARGO_HOME/bin with unrelated files
empty bin cleanup test

Should there be more tests? Please let me know @FranciscoTGouveia @rami3l .

Cloud0310 · 2026-05-20T18:20:13Z

I've add more tests about the PR here. Please review.

rami3l

LGTM modulo some tiny nits, nice work :D

View changes since this review

Avoid removing $CARGO_HOME when running uninstall cleanup. Combine all follow-up work for PR rust-lang#4861: - keep $CARGO_HOME/bin when it is non-empty - cover cargo bin cleanup behavior in uninstall tests - update uninstall cleanup comments and related docs - rename cleanup internals for clearer intent

djc

I think this PR needs a bunch of work, it seems to have a lot of changes together in a single commit that are pretty messy. It would be good if the commit history made it clear that there are a sequence of smaller changes being made.

View changes since this review

Avoid removing $CARGO_HOME when running uninstall cleanup. Combine all follow-up work for PR rust-lang#4861: - keep $CARGO_HOME/bin when it is non-empty - cover cargo bin cleanup behavior in uninstall tests - update uninstall cleanup comments and related docs - rename cleanup internals for clearer intent

…odule

djc

Definitely getting better, still some suggested improvements though.

View changes since this review

djc · 2026-06-11T08:29:29Z

 // .. augmented with this SO answer
 // https://stackoverflow.com/questions/10319526/understanding-a-self-deleting-program-in-c
-pub(crate) fn clean_cargo_bin(process: &Process) -> Result<()> {
+pub(crate) fn spawn_uninstall_gc(process: &Process) -> Result<()> {


Suggest moving this commit earlier in the series (maybe the very first) to make this more obvious during the changes made earlier.

djc · 2026-06-11T08:36:41Z

 }

-pub(crate) fn delete_rustup_and_cargo_home(process: &Process) -> Result<()> {
+pub(crate) fn clean_cargo_bin(process: &Process) -> Result<()> {


I think this rename should be postponed until the commit where the change actually happens (from home to just bin).

@djc For extra clarity for @Cloud0310, do you mean right before the commit X where the change happens, after X, or within X?

Probably in the same commit?

rami3l · 2026-06-11T15:56:11Z

-/// 2. Remove other tools in $CARGO_HOME/bin, but skipping rustup binary file and links to rustup.
-/// 3. If no `--no-modify-path` is passed $CARGO_HOME/bin, clean up $PATH.
-/// 4. Remove $CARGO_HOME
+/// 2. Remove rustup tool links.


In the commit "fix: preserve CARGO_HOME during uninstall", we are not deleting rustup tool links yet.

The comments should really reflect what the code is doing in that particular commit.

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Cloud0310 force-pushed the main branch from 64f3d84 to 1e3a7f7 Compare May 18, 2026 12:11

FranciscoTGouveia reviewed May 19, 2026

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Comment thread tests/suite/cli_self_upd.rs

Cloud0310 marked this pull request as ready for review May 19, 2026 10:37

Cloud0310 force-pushed the main branch from 07d31c8 to b6195c7 Compare May 19, 2026 13:22

rami3l reviewed May 19, 2026

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Comment thread src/cli/self_update.rs Outdated

Cloud0310 requested a review from FranciscoTGouveia May 20, 2026 03:55

Cloud0310 force-pushed the main branch from b6195c7 to 48acf08 Compare May 20, 2026 06:54

djc reviewed May 20, 2026

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Comment thread src/cli/self_update/windows.rs Outdated

Comment thread src/cli/self_update/windows.rs Outdated

Comment thread src/cli/self_update/windows.rs Outdated

Comment thread src/cli/self_update.rs Outdated

Comment thread src/cli/self_update.rs Outdated

Cloud0310 force-pushed the main branch from 48acf08 to b509a72 Compare May 20, 2026 14:03

Cloud0310 force-pushed the main branch from 5a91816 to 905c540 Compare May 20, 2026 18:33

rami3l reviewed May 21, 2026

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Comment thread src/cli/self_update/unix.rs Outdated

rami3l approved these changes May 21, 2026

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Comment thread tests/suite/cli_self_upd.rs Outdated

Comment thread tests/suite/cli_self_upd.rs

Cloud0310 force-pushed the main branch 2 times, most recently from 4a4880a to 971dffa Compare May 22, 2026 08:13

Cloud0310 force-pushed the main branch from 971dffa to b7bddd9 Compare May 22, 2026 08:26

Cloud0310 force-pushed the main branch from b7bddd9 to 01cfd07 Compare May 22, 2026 08:45

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Cloud0310 force-pushed the main branch from 01cfd07 to 61b3e49 Compare May 22, 2026 09:00

djc reviewed May 22, 2026

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Comment thread src/cli/self_update/unix.rs Outdated

Comment thread src/cli/self_update/windows.rs Outdated

Comment thread src/cli/self_update/windows.rs Outdated

Comment thread src/cli/self_update/windows.rs

Cloud0310 mentioned this pull request May 22, 2026

Update contribute docs with cross platform code development guide #4864

Closed

rami3l mentioned this pull request May 22, 2026

Clarify in the dev guide what is expected from a PR #4865

Closed

Cloud0310 force-pushed the main branch from 61b3e49 to a80abc9 Compare May 22, 2026 16:28

Cloud0310 force-pushed the main branch 2 times, most recently from dac53d8 to 3c0d7e4 Compare June 7, 2026 15:43

refactor(cli/self-update): move unix::clean_cargo_bin() to parent m…

f2bfa78

…odule

Cloud0310 force-pushed the main branch 2 times, most recently from af1c3ac to 60c433c Compare June 8, 2026 18:02

Cloud0310 marked this pull request as ready for review June 8, 2026 18:04

Cloud0310 changed the title ~~fix!: stop deleting $CARGO_HOME during uninstall~~ fix: stop deleting $CARGO_HOME during uninstall Jun 8, 2026

rami3l approved these changes Jun 8, 2026

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Comment thread src/cli/self_update.rs Outdated

Comment thread tests/suite/cli_self_upd.rs

Cloud0310 force-pushed the main branch from 60c433c to ca2bba6 Compare June 8, 2026 18:43

Cloud0310 requested a review from rami3l June 9, 2026 15:09

rami3l reviewed Jun 10, 2026

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Comment thread src/cli/self_update.rs Outdated

Comment thread src/cli/self_update/windows.rs

Comment thread src/cli/self_update.rs

Cloud0310 force-pushed the main branch 2 times, most recently from 0677697 to d5e6935 Compare June 10, 2026 14:29

refactor: route Windows cargo home cleanup through parent helper

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Cloud0310 force-pushed the main branch from d5e6935 to c8af677 Compare June 10, 2026 15:37

Cloud0310 added 3 commits June 10, 2026 23:53

refactor: rename Windows uninstall gc helper

297cac5

refactor: pass PATH cleanup to clean_cargo_bin

5f13c0a

doc: add uninstall process overall docstring

d5b237e

Cloud0310 force-pushed the main branch from c8af677 to 31432e4 Compare June 10, 2026 16:07

Cloud0310 requested review from djc and rami3l June 10, 2026 16:07

djc reviewed Jun 11, 2026

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rami3l reviewed Jun 11, 2026

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Cloud0310 added 5 commits June 12, 2026 01:17

fix: preserve CARGO_HOME during uninstall

6aa45d2

fix: remove rustup proxy links during uninstall

4a5a86d

test: cover cargo bin removal during uninstall

53a88aa

test: cover cargo bin PATH cleanup during uninstall

07fefef

test: cover Windows cargo bin cleanup during uninstall

8c89d1b

Cloud0310 force-pushed the main branch from 31432e4 to 8c89d1b Compare June 11, 2026 17:20

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Cloud0310 commented May 18, 2026

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