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2022-08-11Rollup merge of #100287 - cuviper:no-linux-prctl, r=Mark-SimulacrumDylan DPC-3/+9
linux: Use `pthread_setname_np` instead of `prctl` This function is available on Linux since glibc 2.12, musl 1.1.16, and uClibc 1.0.20. The main advantage over `prctl` is that it properly represents the pointer argument, rather than a multi-purpose `long`, so we're better representing strict provenance (#95496).
2022-08-11promote debug_assert to assertVincenzo Palazzo-2/+6
Signed-off-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
2022-08-10add crt-static for androidBryanskiy-2/+4
2022-08-08Replace pointer casting in hashmap_random_keys with safe codeBlackHoleFox-9/+9
The old code was unnecessarily unsafe and relied on the layout of tuples always being the same as an array of the same size.
2022-08-08linux: Use `pthread_setname_np` instead of `prctl`Josh Stone-3/+9
This function is available on Linux since glibc 2.12, musl 1.1.16, and uClibc 1.0.20. The main advantage over `prctl` is that it properly represents the pointer argument, rather than a multi-purpose `long`, so we're better representing strict provenance (#95496).
2022-08-07Fix HorizonOS regression in FileTimesAndrea Ciliberti-5/+5
2022-08-05non-linux platformsNick Cameron-4/+4
Signed-off-by: Nick Cameron <nrc@ncameron.org>
2022-08-04std::io: migrate ReadBuf to BorrowBuf/BorrowCursorNick Cameron-9/+8
Signed-off-by: Nick Cameron <nrc@ncameron.org>
2022-08-03FilesTimes support does not build for ESP-IDFIvan Markov-3/+7
2022-08-01Auto merge of #98246 - joshtriplett:times, r=m-ou-sebors-1/+88
Support setting file accessed/modified timestamps Add `struct FileTimes` to contain the relevant file timestamps, since most platforms require setting all of them at once. (This also allows for future platform-specific extensions such as setting creation time.) Add `File::set_file_time` to set the timestamps for a `File`. Implement the `sys` backends for UNIX, macOS (which needs to fall back to `futimes` before macOS 10.13 because it lacks `futimens`), Windows, and WASI.
2022-07-31Auto merge of #78802 - faern:simplify-socketaddr, r=joshtriplettbors-2/+2
Implement network primitives with ideal Rust layout, not C system layout This PR is the result of this internals forum thread: https://internals.rust-lang.org/t/why-are-socketaddrv4-socketaddrv6-based-on-low-level-sockaddr-in-6/13321. Instead of basing `std:::net::{Ipv4Addr, Ipv6Addr, SocketAddrV4, SocketAddrV6}` on system (C) structs, they are encoded in a more optimal and idiomatic Rust way. This changes the public API of std by introducing structural equality impls for all four types here, which means that `match ipv4addr { SOME_CONSTANT => ... }` will now compile, whereas previously this was an error. No other intentional changes are introduced to public API. It's possible to observe the current layout of these types (e.g., by pointer casting); most but not all libraries which were found by Crater to do this have had updates issued and affected versions yanked. See report below. ### Benefits of this change - It will become possible to move these fundamental network types from `std` into `core` ([RFC](https://github.com/rust-lang/rfcs/pull/2832)). - Some methods that can't be made `const fn`s today can be made `const fn`s with this change. - `SocketAddrV4` only occupies 6 bytes instead of 16 bytes. - These simple primitives become easier to read and uses less `unsafe`. - Makes these types support structural equality, which means you can now (for instance) match an `Ipv4Addr` against a constant ### ~Remaining~ Previous problems This change obviously changes the memory layout of the types. And it turns out some libraries invalidly assumes the memory layout and does very dangerous pointer casts to convert them. These libraries will have undefined behaviour and perform invalid memory access until patched. - [x] - `mio` - Issue: https://github.com/tokio-rs/mio/issues/1386. - [x] `0.7` branch https://github.com/tokio-rs/mio/pull/1388 - [x] `0.7.6` published https://github.com/tokio-rs/mio/pull/1398 - [x] Yank all `0.7` versions older than `0.7.6` - [x] Report `<0.7.6` to RustSec Advisory Database https://rustsec.org/advisories/RUSTSEC-2020-0081.html - [x] - `socket2` - Issue: https://github.com/rust-lang/socket2-rs/issues/119. - [x] `0.3.x` branch https://github.com/rust-lang/socket2-rs/pull/120 - [x] `0.3.16` published - [x] `master` branch https://github.com/rust-lang/socket2-rs/pull/122 - [x] Yank all `0.3` versions older than `0.3.16` - [x] Report `<0.3.16` to RustSec Advisory Database https://rustsec.org/advisories/RUSTSEC-2020-0079.html - [x] - `net2` - Issue: https://github.com/deprecrated/net2-rs/issues/105 - [x] https://github.com/deprecrated/net2-rs/pull/106 - [x] `0.2.36` published - [x] Yank all `0.2` versions older than `0.2.36` - [x] Report `<0.2.36` to RustSec Advisory Database https://rustsec.org/advisories/RUSTSEC-2020-0078.html - [x] - `miow` - Issue: https://github.com/yoshuawuyts/miow/issues/38 - [x] `0.3.x` - https://github.com/yoshuawuyts/miow/pull/39 - [x] `0.3.6` published - [x] `0.2.x` - https://github.com/yoshuawuyts/miow/pull/40 - [x] `0.2.2` published - [x] Yanked all `0.2` versions older than `0.2.2` - [x] Yanked all `0.3` versions older than `0.3.6` - [x] Report `<0.2.2` and `<0.3.6` to RustSec Advisory Database https://rustsec.org/advisories/RUSTSEC-2020-0080.html - [x] - `quinn master` (aka what became 0.7) - https://github.com/quinn-rs/quinn/issues/968 https://github.com/quinn-rs/quinn/pull/987 - [x] - `quinn 0.6` - https://github.com/quinn-rs/quinn/pull/1045 - [x] - `quinn 0.5` - https://github.com/quinn-rs/quinn/pull/1046 - [x] - Release `0.7.0`, `0.6.2` and `0.5.4` - [x] - `nb-connect` - https://github.com/smol-rs/nb-connect/issues/1 - [x] - Release `1.0.3` - [x] - Yank all versions older than `1.0.3` - [x] - `shadowsocks-rust` - https://github.com/shadowsocks/shadowsocks-rust/issues/462 - [ ] - `rio` - https://github.com/spacejam/rio/issues/44 - [ ] - `seaslug` - https://github.com/spacejam/seaslug/issues/1 #### Fixed crate versions All crates I have found that assumed the memory layout have been fixed and published. The crates and versions that will continue working even as/if this PR is merged is (please upgrade these to help unblock this PR): * `net2 0.2.36` * `socket2 0.3.16` * `miow 0.2.2` * `miow 0.3.6` * `mio 0.7.6` * `mio 0.6.23` - Never had the invalid assumption itself, but has now been bumped to only allow fixed dependencies (`net2` + `miow`) * `nb-connect 1.0.3` * `quinn 0.5.4` * `quinn 0.6.2` ### Release notes draft This release changes the memory layout of `Ipv4Addr`, `Ipv6Addr`, `SocketAddrV4` and `SocketAddrV6`. The standard library no longer implements these as the corresponding `libc` structs (`sockaddr_in`, `sockaddr_in6` etc.). This internal representation was never exposed, but some crates relied on it anyway by unsafely transmuting. This change will cause those crates to make invalid memory accesses. Notably `net2 <0.2.36`, `socket2 <0.3.16`, `mio <0.7.6`, `miow <0.3.6` and a few other crates are affected. All known affected crates have been patched and have had fixed versions published over a year ago. If any affected crate is still in your dependency tree, you need to upgrade them before using this version of Rust.
2022-07-30Fix warnings in stubbed out set_timesJosh Triplett-4/+5
2022-07-25Implement `fs::get_path` for FreeBSD.David CARLIER-0/+14
Using `F_KINFO` fcntl flag, the kf_structsize field needs to be set beforehand for that effect.
2022-07-23Auto merge of #97925 - the8472:cgroupv1, r=joshtriplettbors-46/+189
Add cgroupv1 support to available_parallelism Fixes #97549 My dev machine uses cgroup v2 so I was only able to test that code path. So the v1 code path is written only based on documentation. I could use some help testing that it works on a machine with cgroups v1: ``` $ x.py build --stage 1 # quota.rs fn main() { println!("{:?}", std::thread::available_parallelism()); } # assuming stage1 is linked in rustup $ rust +stage1 quota.rs # spawn a new cgroup scope for the current user $ sudo systemd-run -p CPUQuota="300%" --uid=$(id -u) -tdS # should print Ok(3) $ ./quota ``` If it doesn't work as expected an strace, the contents of `/proc/self/cgroups` and the structure of `/sys/fs/cgroups` would help.
2022-07-22Recover error strings on Unix from_lossy_utf8Jubilee Young-1/+3
Some language settings can result in unreliable UTF-8 being produced. This can result in failing to emit the error string, panicking instead. from_lossy_utf8 allows us to assume these strings usually will be fine.
2022-07-22Stub out `set_times` to return unsupported on RedoxJosh Triplett-2/+13
Redox doesn't appear to support `UTIME_OMIT`, so we can't set file times individually.
2022-07-21Rollup merge of #98707 - joboet:fuchsia_locks, r=m-ou-seMatthias Krüger-64/+256
std: use futex-based locks on Fuchsia This switches `Condvar` and `RwLock` to the futex-based implementation currently used on Linux and some BSDs. Additionally, `Mutex` now has its own, priority-inheriting implementation based on the mutex in Fuchsia's `libsync`. It differs from the original in that it panics instead of aborting when reentrant locking is detected. ````@rustbot```` ping fuchsia r? ````@m-ou-se````
2022-07-21remove unused importjoboet-1/+1
2022-07-20owner is not micro (correct typo)joboet-1/+1
2022-07-20Rollup merge of #98101 - vladimir-ea:stdlib_watch_os, r=thomccDylan DPC-20/+61
stdlib support for Apple WatchOS This is a follow-up to https://github.com/rust-lang/rust/pull/95243 (Add Apple WatchOS compiler targets) that adds stdlib support for Apple WatchOS. `@deg4uss3r` `@nagisa`
2022-07-20Library changes for Apple WatchOSVladimir Michael Eatwell-20/+61
2022-07-18std: panic instead of deadlocking in mutex implementation on Fuchsiajoboet-16/+15
2022-07-15Don't fall back to futimes on Android; it needs a newer API level than futimensJosh Triplett-7/+18
Just return `io::ErrorKind::Unsupported` instead.
2022-07-15Also use fallback for futimens on AndroidJosh Triplett-3/+3
futimens requires Android API level 19, and std still supports older API levels.
2022-07-15Support setting file accessed/modified timestampsJosh Triplett-0/+64
Add `struct FileTimes` to contain the relevant file timestamps, since most platforms require setting all of them at once. (This also allows for future platform-specific extensions such as setting creation time.) Add `File::set_file_time` to set the timestamps for a `File`. Implement the `sys` backends for UNIX, macOS (which needs to fall back to `futimes` before macOS 10.13 because it lacks `futimens`), Windows, and WASI.
2022-07-12std: fix issue with perma-locked mutexes on Fuchsiajoboet-9/+20
2022-07-06changes from feedbackDavid Carlier-12/+8
2022-07-06doc additionsDavid Carlier-0/+5
2022-07-06socket `set_mark` addition.David Carlier-0/+10
to be able to set a marker/id on the socket for network filtering (iptables/ipfw here) purpose.
2022-06-30std: use futex-based locks on Fuchsiajoboet-64/+246
2022-06-25Rollup merge of #98194 - m-ou-se:leak-locked-pthread-mutex, r=AmanieuMatthias Krüger-1/+35
Leak pthread_{mutex,rwlock}_t if it's dropped while locked. Fixes https://github.com/rust-lang/rust/issues/85434.
2022-06-24scan mountinfo when hardcoded cgroupv1 mountpoints don't workThe 8472-19/+83
2022-06-23Represent SocketAddrV4 and SocketAddrV6 as Rust native encodingLinus Färnstrand-2/+2
2022-06-22Rollup merge of #96768 - m-ou-se:futex-fuchsia, r=tmandryYuki Okushi-0/+51
Use futex based thread parker on Fuchsia.
2022-06-21Use futex based thread parker on Fuchsia.Mara Bos-0/+51
2022-06-20Leak pthreax_rwlock_t when it's dropped while locked.Mara Bos-0/+16
2022-06-17Auto merge of #98143 - cuviper:futex-rwlock-inline, r=thomccbors-0/+9
Add `#[inline]` to small fns of futex `RwLock` The important methods like `read` and `write` were already inlined, which can propagate all the way to inlining in user code, but these small state functions were left behind as normal calls. They should almost always be inlined as well, as they're just a few instructions.
2022-06-16Leak pthreax_mutex_t when it's dropped while locked.Mara Bos-1/+19
2022-06-15Add `#[inline]` to small fns of futex `RwLock`Josh Stone-0/+9
The important methods like `read` and `write` were already inlined, which can propagate all the way to inlining in user code, but these small state functions were left behind as normal calls. They should almost always be inlined as well, as they're just a few instructions.
2022-06-15Auto merge of #95897 - AzureMarker:feature/horizon-std, r=nagisabors-55/+96
STD support for the Nintendo 3DS Rustc already supports compiling for the Nintendo 3DS using the `armv6k-nintendo-3ds` target (Tier 3). Until now though, only `core` and `alloc` were supported. This PR adds standard library support for the Nintendo 3DS. A notable exclusion is `std::thread` support, which will come in a follow-up PR as it requires more complicated changes. This has been a joint effort by `@Meziu,` `@ian-h-chamberlain,` myself, and prior work by `@rust3ds` members. ### Background The Nintendo 3DS (Horizon OS) is a mostly-UNIX looking system, with the caveat that it does not come with a full libc implementation out of the box. On the homebrew side (I'm not under NDA), the libc interface is partially implemented by the [devkitPro](https://devkitpro.org/wiki/devkitPro_pacman) toolchain and a user library like [`libctru`](https://github.com/devkitPro/libctru). This is important because there are [some possible legal barriers](https://github.com/rust-lang/rust/pull/88529#issuecomment-919938396) to linking directly to a library that uses the underlying platform APIs, since they might be considered a trade secret or under NDA. To get around this, the standard library impl for the 3DS does not directly depend on any platform-level APIs. Instead, it expects standard libc functions to be linked in. The implementation of these libc functions is left to the user. Some functions are provided by the devkitPro toolchain, but in our testing, we used the following to fill in the other functions: - [`libctru`] - provides more basic APIs, such as `nanosleep`. Linked in by way of [`ctru-sys`](https://github.com/Meziu/ctru-rs/tree/master/ctru-sys). - [`pthread-3ds`](https://github.com/Meziu/pthread-3ds) - provides pthread APIs for `std::thread`. Implemented using [`libctru`]. - [`linker-fix-3ds`](https://github.com/Meziu/rust-linker-fix-3ds) - fulfills some other missing libc APIs. Implemented using [`libctru`]. For more details, see the `src/doc/rustc/src/platform-support/armv6k-nintendo-3ds.md` file added in this PR. ### Notes We've already upstreamed changes to the [`libc`] crate to support this PR, as well as the upcoming threading PR. These changes have all been released as of 0.2.121, so we bump the crate version in this PR. Edit: After some rebases, the version bump has already been merged so it doesn't appear in this PR. A lot of the changes in this PR are straightforward, and follow in the footsteps of the ESP-IDF target: https://github.com/rust-lang/rust/pull/87666. The 3DS does not support user space process spawning, so these APIs are unimplemented (similar to ESP-IDF). [`libctru`]: https://github.com/devkitPro/libctru [`libc`]: https://github.com/rust-lang/libc
2022-06-14Implement stabilization of `#[feature(io_safety)]`.Dan Gohman-6/+6
Implement stabilization of [I/O safety], aka `#[feature(io_safety)]`. Fixes #87074. [I/O safety]: https://github.com/rust-lang/rfcs/blob/master/text/3128-io-safety.md
2022-06-13Enable thread_local_dtor on horizon OSIan Chamberlain-1/+1
Always use fallback thread_local destructor, since __cxa_thread_atexit_impl is never defined on the target. See https://github.com/AzureMarker/rust-horizon/pull/2
2022-06-13Update libc::stat field namesIan Chamberlain-1/+6
See https://github.com/Meziu/rust-horizon/pull/14
2022-06-13Enable argv support for horizon OSIan Chamberlain-4/+7
See https://github.com/Meziu/rust-horizon/pull/9
2022-06-13Use the right wait_timeout implementationAzureMarker-7/+7
Our condvar doesn't support setting attributes, like pthread_condattr_setclock, which the current wait_timeout expects to have configured. Switch to a different implementation, following espidf.
2022-06-13Horizon OS STD supportMeziu-54/+87
Co-authored-by: Ian Chamberlain <ian.h.chamberlain@gmail.com> Co-authored-by: Mark Drobnak <mark.drobnak@gmail.com>
2022-06-10Auto merge of #96837 - tmiasko:stdio-fcntl, r=joshtriplettbors-35/+56
Use `fcntl(fd, F_GETFD)` to detect if standard streams are open In the previous implementation, if the standard streams were open, but the RLIMIT_NOFILE value was below three, the poll would fail with EINVAL: > ERRORS: EINVAL The nfds value exceeds the RLIMIT_NOFILE value. Switch to the existing fcntl based implementation to avoid the issue. Fixes #96621.
2022-06-10use fcntl fallback for additional poll-specific errorsThe 8472-7/+8
2022-06-09add cgroupv1 support to available_parallelismThe 8472-47/+126
2022-06-05Remove SIGIO reference on HaikuRyan Zoeller-0/+1
Haiku doesn't define SIGIO. The nix crate already employs this workaround: https://github.com/nix-rust/nix/blob/5dedbc7850448ae3922ab0a833f3eb971bf7e25f/src/sys/signal.rs#L92-L94
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