Rollup of 9 pull requests #121887
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Rollup of 9 pull requests #121887
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These methods are the pre-stabilized API for obtaining peer credentials from an `AF_UNIX` socket, part of the `unix_socket_ancillary_data` feature. Their current behavior is to get/set one of the `SO_PASSCRED` (Linux), `LOCAL_CREDS_PERSISTENT` (FreeBSD), or `LOCAL_CREDS` (NetBSD) socket options. On other targets the `{set_}passcred()` methods do not exist. There are two problems with this approach: 1. Having public methods only exist for certain targets isn't permitted in a stable `std` API. 2. These options have generally similar purposes, but they are non-POSIX and their details can differ in subtle and surprising ways (such as whether they continue to be set after the next call to `recvmsg()`). Splitting into OS-specific extension traits is the preferred solution to both problems. 
When reading through this, I got slightly hung up thinking the `let` it was referring to was the `let tmp` on line 25, which was confusing considering the comment states that the temporary is freed at the end of the block. I think adding this clarification could potentially help some beginners like myself without being overly verbose.
To the module where it is used, so it doesn't have to be `pub`.
This just moves the server-relevant parts of handles into `server.rs`. It introduces a new higher-order macro `with_api_handle_types` to avoid some duplication. This fixes two `FIXME` comments, and makes things clearer, by not having server code in `client.rs`.
Clearer wording
fix typo in documentation for std::fs::Permissions Please check and re-check this PR carefully to see if I got this right. But by my logic, if the `read_only` function returns `true`, I would not expect be able to write to the file (it being read only); so this text is meant to clarify that `read_only` being `false` doesn't mean *you* can actually write to the file, just that "in general" someone is able to.
…anieu,dtolnay Convert `Unix{Datagram,Stream}::{set_}passcred()` to per-OS traits These methods are the pre-stabilized API for obtaining peer credentials from an `AF_UNIX` socket, part of the `unix_socket_ancillary_data` feature. Their current behavior is to get/set one of the `SO_PASSCRED` (Linux), `LOCAL_CREDS_PERSISTENT` (FreeBSD), or `LOCAL_CREDS` (NetBSD) socket options. On other targets the `{set_}passcred()` methods do not exist. There are two problems with this approach: 1. Having public methods only exist for certain targets isn't permitted in a stable `std` API. 2. These options have generally similar purposes, but they are non-POSIX and their details can differ in subtle and surprising ways (such as whether they continue to be set after the next call to `recvmsg()`). Splitting into OS-specific extension traits is the preferred solution to both problems. Update E0716.md for clarity When reading through this, I got slightly hung up thinking the `let` it was referring to was the `let tmp` on line 25, which was confusing considering the comment states that the temporary is freed at the end of the block. I think adding this clarification could potentially help some beginners like myself without being overly verbose.
Display short types for unimplemented trait Shortens unimplemented trait diagnostics. Now shows: ``` error[E0277]: `Option<Option<Option<...>>>` doesn't implement `std::fmt::Display` --> $DIR/on_unimplemented_long_types.rs:4:17 | LL | pub fn foo() -> impl std::fmt::Display { | ^^^^^^^^^^^^^^^^^^^^^^ `Option<Option<Option<...>>>` cannot be formatted with the default formatter LL | LL | / Some(Some(Some(Some(Some(Some(Some(Some(Some(S... LL | | Some(Some(Some(Some(Some(Some(Some(Some(So... LL | | Some(Some(Some(Some(Some(Some(Some(Som... LL | | Some(Some(Some(Some(Some(Some(Some... ... | LL | | ))))))))))), LL | | ))))))))))) | |_______________- return type was inferred to be `Option<Option<Option<...>>>` here | = help: the trait `std::fmt::Display` is not implemented for `Option<Option<Option<...>>>` = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0277`. ``` I'm not 100% sure if this is desirable, or if we should just let the long types remain long. This is also kinda a short-term bandaid solution. The real long term solution is to properly migrate `rustc_trait_selection`'s error reporting to use translatable diagnostics and then properly handle type name printing. Fixes rust-lang#121687. …est31 Move `gather_comments`. To the module where it is used, so it doesn't have to be `pub`. r? ``@est31``
Move `HandleStore` into `server.rs`. This just moves the server-relevant parts of handles into `server.rs`. It introduces a new higher-order macro `with_api_handle_types` to avoid some duplication. This fixes two `FIXME` comments, and makes things clearer, by not having server code in `client.rs`. r? ``@bjorn3``
…=cuviper Remove hidden use of Global Fixes rust-lang#121797
…les, r=workingjubilee Use the guaranteed precision of a couple of float functions in docs
…r-errors Account for unmet T: !Copy in E0277 message ``` error[E0277]: the trait bound `T: !Copy` is not satisfied --> $DIR/simple.rs:10:16 | LL | not_copy::<T>(); | ^ the trait bound `T: !Copy` is not satisfied ``` instead of the current ``` error[E0277]: the trait bound `T: !Copy` is not satisfied --> $DIR/simple.rs:10:16 | LL | not_copy::<T>(); | ^ the trait `!Copy` is not implemented for `T` ```
rustbot added O-android rustbot added T-libs 
| @bors r+ rollup=never p=5 |
bors added S-waiting-on-bors bors added a commit to rust-lang-ci/rust that referenced this pull request Mar 2, 2024
Rollup of 9 pull requests Successful merges: - rust-lang#109263 (fix typo in documentation for std::fs::Permissions) - rust-lang#117156 (Convert `Unix{Datagram,Stream}::{set_}passcred()` to per-OS traits) - rust-lang#120684 (Update E0716.md for clarity) - rust-lang#121739 (Display short types for unimplemented trait) - rust-lang#121815 (Move `gather_comments`.) - rust-lang#121835 (Move `HandleStore` into `server.rs`.) - rust-lang#121847 (Remove hidden use of Global) - rust-lang#121861 (Use the guaranteed precision of a couple of float functions in docs) - rust-lang#121875 ( Account for unmet T: !Copy in E0277 message) r? `@ghost` `@rustbot` modify labels: rollup
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bors added S-waiting-on-review 
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Successful merges:
Unix{Datagram,Stream}::{set_}passcred()to per-OS traits #117156 (ConvertUnix{Datagram,Stream}::{set_}passcred()to per-OS traits)gather_comments. #121815 (Movegather_comments.)HandleStoreintoserver.rs. #121835 (MoveHandleStoreintoserver.rs.)r? @ghost
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