rust/src/libstd/sys/unix/fd.rs, branch 1.45.2

Update name

2020-04-26T11:24:16+00:00

Add Read/Write::can_read/write_vectored

2020-04-26T11:23:39+00:00

When working with an arbitrary reader or writer, code that uses vectored operations may end up being slower than code that copies into a single buffer when the underlying reader or writer doesn't actually support vectored operations. These new methods allow you to ask the reader or witer up front if vectored operations are efficiently supported. Currently, you have to use some heuristics to guess by e.g. checking if the read or write only accessed the first buffer. Hyper is one concrete example of a library that has to do this dynamically: https://github.com/hyperium/hyper/blob/0eaf304644a396895a4ce1f0146e596640bb666a/src/proto/h1/io.rs#L582-L594

Add illumos triple

2020-04-14T20:36:07+00:00

Co-Authored-By: Jason King Co-Authored-By: Joshua M. Clulow

Require issue = "none" over issue = "0" in unstable attributes

2019-12-21T11:16:18+00:00

Format libstd/sys with rustfmt

2019-11-30T02:37:58+00:00

This commit applies rustfmt with rust-lang/rust's default settings to files in src/libstd/sys *that are not involved in any currently open PR* to minimize merge conflicts. THe list of files involved in open PRs was determined by querying GitHub's GraphQL API with this script: https://gist.github.com/dtolnay/aa9c34993dc051a4f344d1b10e4487e8 With the list of files from the script in outstanding_files, the relevant commands were: $ find src/libstd/sys -name '*.rs' \ | xargs rustfmt --edition=2018 --unstable-features --skip-children $ rg libstd/sys outstanding_files | xargs git checkout -- Repeating this process several months apart should get us coverage of most of the rest of the files. To confirm no funny business: $ git checkout $THIS_COMMIT^ $ git show --pretty= --name-only $THIS_COMMIT \ | xargs rustfmt --edition=2018 --unstable-features --skip-children $ git diff $THIS_COMMIT # there should be no difference

Update emscripten functions declarations

2019-10-17T10:09:11+00:00

redox: convert to target_family unix

2019-08-06T22:18:23+00:00

filedesc: don't use ioctl(FIOCLEX) on Linux

2019-07-10T13:59:46+00:00

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

Stabilized vectored IO

2019-04-27T15:34:08+00:00

This renames `std::io::IoVec` to `std::io::IoSlice` and `std::io::IoVecMut` to `std::io::IoSliceMut`, and stabilizes `std::io::IoSlice`, `std::io::IoSliceMut`, `std::io::Read::read_vectored`, and `std::io::Write::write_vectored`. Closes #58452

libstd => 2018

2019-02-27T19:06:15+00:00