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Fix STD compilation for the ESP-IDF target (regression from CVE-2022-21658) #93152

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merged 1 commit into from
Jan 24, 2022
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Fix STD compilation for the ESP-IDF target (regression from CVE-2022-21658) #93152

merged 1 commit into from
Jan 24, 2022

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ivmarkov
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Commit 54e22eb broke the compilation of STD for the ESP-IDF embedded "unix-like" Tier 3 target, because the fix for CVE-2022-21658 uses libc flags which are not supported on the ESP-IDF platform.

This PR simply redirects the ESP-IDF compilation to the "classic" implementation, similar to REDOX. This should be safe because:

  • Neither of the two filesystems supported by ESP-IDF (spiffs and fatfs) support symlinks in the first place
  • There is no notion of fs permissions at all, as the ESP-IDF is an embedded platform that does not have the notion of users, groups, etc.
  • Similarly, ESP-IDF has just one "process" - the firmware itself - which contains the user code and the "OS" fused together and running with all permissions

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r? @dtolnay

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@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jan 21, 2022
@ivmarkov ivmarkov mentioned this pull request Jan 21, 2022
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m-ou-se commented Jan 23, 2022

@bors r+

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bors commented Jan 23, 2022

📌 Commit 495c7b3 has been approved by m-ou-se

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jan 23, 2022
@matthiaskrgr matthiaskrgr mentioned this pull request Jan 24, 2022
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bors added a commit to rust-lang-ci/rust that referenced this pull request Jan 24, 2022
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Auto merge of rust-lang#93260 - matthiaskrgr:rollup-c5b9c76, r=matthi…
51126be 
…askrgr

Rollup of 8 pull requests

Successful merges:

 - rust-lang#92513 (std: Implement try_reserve and try_reserve_exact on PathBuf)
 - rust-lang#93152 (Fix STD compilation for the ESP-IDF target (regression from CVE-2022-21658))
 - rust-lang#93186 (Fix link to CVE-2022-21658)
 - rust-lang#93188 (rustdoc: fix bump down typing search on Safari)
 - rust-lang#93212 (Remove unneeded cursor pointer rule on mobile sidebar)
 - rust-lang#93231 (adjust sidebar link brightness)
 - rust-lang#93241 (Fix brief appearance of rust logo in the sidebar)
 - rust-lang#93253 (Update theme on pageshow event)

Failed merges:

r? `@ghost`
`@rustbot` modify labels: rollup
@bors bors merged commit 144aeed into rust-lang:master Jan 24, 2022
@rustbot rustbot added this to the 1.60.0 milestone Jan 24, 2022
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