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2019-10-26Auto merge of #65167 - hermitcore:rusty-hermit, r=alexcrichtonbors-30/+8
Redesign the interface to the unikernel HermitCore We are developing the unikernel HermitCore, where the kernel is written in Rust and is already part of the Rust Standard Library. The interface between the standard library and the kernel based on a small C library. With this pull request, we remove completely the dependency to C and use lld as linker. Currently, the kernel will be linked to the application as static library, which is published at https://github.com/hermitcore/libhermit-rs. We don’t longer support the C interface to the kernel. Consequently, we remove this part from the Rust Standard Library.
2019-10-25Rollup merge of #65685 - oxalica:statx-eperm, r=alexcrichtonMazdak Farrokhzad-42/+55
Fix check of `statx` and handle EPERM Should fix #65662 https://github.com/rust-lang/rust/issues/65662#issuecomment-544593939 > I think a reasonable solution might be to do something like try to stat AT_CWD initially and if that fails with EPERM or ENOSYS we disable the syscall entirely, otherwise it's cached as always good to use. r? @alexcrichton
2019-10-25Merge branch 'master' into rusty-hermit, resolve conflictsStefan Lankes-1/+1
2019-10-23Some tweaksoxalica-49/+44
2019-10-22Apply clippy::needless_return suggestionsMateusz Mikuła-1/+1
2019-10-22Merge branch 'master' into rusty-hermitStefan Lankes-34/+2
2019-10-22Fix check of `statx`oxalica-16/+34
2019-10-20Merge branch 'master' into rusty-hermitStefan Lankes-10/+217
2019-10-20Auto merge of #65469 - mati865:libc, r=alexcrichtonbors-34/+2
Update libc to 0.2.64 Passed local tests. cc potentially interested people: @gnzlbg @tlively
2019-10-18Fix cast of stx_btime.tv_nsecoxalica-1/+1
2019-10-18Fix cfgs for current libcoxalica-89/+139
2019-10-18Prefer statx on linux if availableoxalica-7/+164
2019-10-17Update emscripten functions declarationsMateusz Mikuła-34/+2
2019-10-16Upgrade Emscripten targets to use upstream LLVM backendThomas Lively-1/+2
- Compatible with Emscripten 1.38.46-upstream or later upstream. - Refactors the Emscripten target spec to share code with other wasm targets. - Replaces the old incorrect wasm32 C call ABI with the correct one, preserving the old one as wasm32_bindgen_compat for wasm-bindgen compatibility. - Updates the varargs ABI used by Emscripten and deletes the old one. - Removes the obsolete wasm32-experimental-emscripten target. - Uses EMCC_CFLAGS on CI to avoid the timeout problems with #63649.
2019-10-06redesign of the interface to the unikernel HermitCoreStefan Lankes-30/+8
- the old interface between HermitCore and the Rust Standard Library based on a small C library (newlib) - remove this interface and call directly the unikernel - remove the dependency to the HermitCore linker - use rust-lld as linker
2019-10-05Revert "Auto merge of #63649 - tlively:emscripten-upstream-upgrade, ↵Tyler Mandry-2/+1
r=alexcrichton" This reverts commit 7870050796e5904a0fc85ecbe6fa6dde1cfe0c91, reversing changes made to 2e7244807a7878f6eca3eb7d97ae9b413aa49014.
2019-10-04Upgrade Emscripten targets to use upstream LLVM backendThomas Lively-1/+2
- Refactors the Emscripten target spec to share code with other wasm targets. - Replaces the incorrect wasm32 C call ABI with the old asmjs version, which is correct for both wasm32 and JS. - Updates the varargs ABI used by Emscripten and deletes the old one. - Removes the obsolete wasm32-experimental-emscripten target. - Temporarily makes Emscripten targets use panic=abort by default because supporting unwinding will require an LLVM patch.
2019-09-25Fix ExitStatus on FuchsiaTyler Mandry-75/+93
Fuchsia exit codes don't follow the convention of libc::WEXITSTATUS et al, and they are 64 bits instead of 32 bits. This gives Fuchsia its own representation of ExitStatus. Additionally, the zircon syscall structs were out of date, causing us to see bogus return codes.
2019-09-07Rollup merge of #64023 - tmandry:libstd-fuchsia-fixes, r=cramertjMazdak Farrokhzad-27/+76
libstd fuchsia fixes This fixes two bugs in libstd on Fuchsia: - `zx_time_t` was changed to an `i64`, but this never made it into libstd - When spawning processes where any of the stdio were null, libstd attempts to open `/dev/null`, which doesn't exist on Fuchsia r? @cramertj
2019-09-06Rollup merge of #64198 - cramertj:fuchsia-monotonic, r=alexcrichtonMazdak Farrokhzad-0/+1
Add Fuchsia to actually_monotonic Fuchsia provides a fully monotonic clock. Fix https://github.com/rust-lang/rust/issues/64196 cc @joshlf @tmandry r? @alexcrichton
2019-09-05Add Fuchsia to actually_monotonicTaylor Cramer-0/+1
Fuchsia provides a fully monotonic clock.
2019-09-05std: Improve downstream codegen in `Command::env`Alex Crichton-4/+5
This commit rejiggers the generics used in the implementation of `Command::env` with the purpose of reducing the amount of codegen that needs to happen in consumer crates, instead preferring to generate code into libstd. This was found when profiling the compile times of the `cc` crate where the binary rlib produced had a lot of `BTreeMap` code compiled into it but the crate doesn't actually use `BTreeMap`. It turns out that `Command::env` is generic enough to codegen the entire implementation in calling crates, but in this case there's no performance concern so it's fine to compile the code into the standard library. This change is done by removing the generic on the `CommandEnv` map which is intended to handle case-insensitive variables on Windows. Instead now a generic isn't used but rather a `use` statement defined per-platform is used. With this commit a debug build of `Command::new("foo").env("a", "b")` drops from 21k lines of LLVM IR to 10k.
2019-08-30fuchsia: Fix default environment behavior when spawningTyler Mandry-2/+5
2019-08-30fuchsia: Don't fail to spawn if no stdin existsTyler Mandry-22/+41
2019-08-30Don't try to use /dev/null on FuchsiaTyler Mandry-9/+36
2019-08-29Update zx_time_t to an i64Tyler Mandry-3/+3
2019-08-23Auto merge of #63521 - newpavlov:redox_builder, r=pietroalbinibors-13/+12
Re-enable Redox builder (take 2) Closes: #63160
2019-08-19Consolidate sigemptyset workaroundsJoe Richey-40/+27
In sys/unix/process, we work around the sigemptyset linking issues on android in two different ways. This change consolidates these workarounds, and avoids duplicating bindings from `libc`.
2019-08-19remove any from cfgsArtyom Pavlov-2/+2
2019-08-19cfg fix 2Artyom Pavlov-1/+2
2019-08-19fix cfgArtyom Pavlov-11/+9
2019-08-08Rollup merge of #63332 - marmistrz:truncate, r=alexcrichtonMazdak Farrokhzad-3/+9
Add an overflow check in truncate implementation for Unix. Closes #63326. cc @alexcrichton
2019-08-08Move the TryInto import into the inner scopeMarcin Mielniczuk-1/+1
2019-08-06Fix cfg_if usageJeremy Soller-2/+2
2019-08-06redox: convert to target_family unixJeremy Soller-32/+92
2019-08-06Add an overflow check in truncate implementation for Unix.Marcin Mielniczuk-3/+9
2019-08-03Add {IoSlice, IoSliceMut}::advanceThomas de Zeeuw-0/+24
2019-08-02Auto merge of #62309 - jlevon:62302, r=alexcrichtonbors-1/+14
provide thread name to OS for Solarish systems Fixes #62302 Passes a Linux bootstrap build. python x.py test src/tools/tidy happy. I tested this with a small test binary that spawns a few threads, and verified that: - on an illumos system lacking the libc function, the binary runs but no OS-level thread names are set - on an illumos system with the feature, the binary runs, and the thread names are visible and correct under tools like MDB, pstack, core dump, etc.
2019-08-02provide thread name to OS for Solarish systemsJohn Levon-1/+14
2019-08-01Remove mach dependencygnzlbg-5/+21
2019-08-01Update libc and use the Mach kernel APIs via the mach crate instead.gnzlbg-4/+5
2019-07-28Rollup merge of #62806 - mati865:clippy, r=TimNNMazdak Farrokhzad-2/+2
Fix few Clippy warnings
2019-07-26add repr(transparent) to IoSliceMut where missingNiv Kaminer-0/+1
2019-07-18Fix clippy::len_zero warningsMateusz Mikuła-1/+1
2019-07-18Fix clippy::clone_on_copy warningsMateusz Mikuła-1/+1
2019-07-11Rollup merge of #62425 - cyphar:linux-cloexec-use-fcntl, r=alexcrichtonMazdak Farrokhzad-0/+2
filedesc: don't use ioctl(FIOCLEX) on Linux All `ioctl(2)`s will fail on `O_PATH` file descriptors on Linux (because they use `&empty_fops` as a security measure against `O_PATH` descriptors affecting the backing file). As a result, `File::try_clone()` and various other methods would always fail with `-EBADF` on `O_PATH` file descriptors. The solution is to simply use `F_SETFD` (as is used on other unices) which works on `O_PATH` descriptors because it operates through the `fnctl(2)` layer and not through `ioctl(2)`s. Since this code is usually only used in strange error paths (a broken or ancient kernel), the extra overhead of one syscall shouldn't cause any dramas. Most other systems programming languages also use the fnctl(2) so this brings us in line with them. Fixes: rust-lang/rust#62314 Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
2019-07-10filedesc: don't use ioctl(FIOCLEX) on LinuxAleksa Sarai-0/+2
All ioctl(2)s will fail on O_PATH file descriptors on Linux (because they use &empty_fops as a security measure against O_PATH descriptors affecting the backing file). As a result, File::try_clone() and various other methods would always fail with -EBADF on O_PATH file descriptors. The solution is to simply use F_SETFD (as is used on other unices) which works on O_PATH descriptors because it operates through the fnctl(2) layer and not through ioctl(2)s. Since this code is usually only used in strange error paths (a broken or ancient kernel), the extra overhead of one syscall shouldn't cause any dramas. Most other systems programming languages also use the fnctl(2) so this brings us in line with them. Fixes: rust-lang/rust#62314 Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
2019-07-06Rollup merge of #62296 - RalfJung:memalign, r=alexcrichtonMazdak Farrokhzad-1/+9
request at least ptr-size alignment from posix_memalign Fixes https://github.com/rust-lang/rust/issues/62251
2019-07-03fix unused-import error on androidRalf Jung-2/+1
2019-07-02improve and deduplicate commentsRalf Jung-4/+3
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