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For issue #1558
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Using features reduces build time and size for consumer crates. By
default all features are enabled.
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And this time, start running Clippy in CI
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For many of Nix's consumers it be convenient to easily convert a Nix
error into a std::io::Error. That's currently not possible because of
the InvalidPath, InvalidUtf8, and UnsupportedOperation types that have
no equivalent in std::io::Error.
However, very few of Nix's public APIs actually return those unusual
errors. So a more useful API would be for Nix's standard error type to
implement Into<std::io::Error>.
This commit makes Error a simple NewType around Errno. For most
functions it's a drop-in replacement. There are only three exceptions:
* clearenv now returns a bespoke error type. It was the only Nix
function whose error couldn't be cleanly mapped onto an Errno.
* sys::signal::signal now returns Error(Errno::ENOTSUP) instead of
Error::UnsupportedOperation when the user passes an incompatible
argument to `handler`.
* When a NixPath exceeds PATH_MAX, it will now return
Error(Errno::ENAMETOOLONG) instead of Error::InvalidPath.
In the latter two cases there is now some abiguity about whether the
error code was generated by Nix or by the OS. But I think the ambiguity
is worth it for the sake of being able to implement Into<io::Error>.
This commit also introduces Error::Sys() as a migration aid. Previously
that as an enum variant. Now it's a function, but it will work in many
of the same contexts as the original.
Fixes #1155
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1401: cleanup: remove redundant unwrap in Dir::from_fd r=asomers a=scottlamb
Co-authored-by: Scott Lamb <slamb@slamb.org>
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Co-authored-by: Dominik Hassler <hadfl@omnios.org>
Co-authored-by: Joshua M. Clulow <josh@sysmgr.org>
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This is useful to allow returning an iterator based on a directory iterator
without needing a self-referential struct.
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Since they close their file descriptors on Drop, it's almost impossible
to use Clone without creating a double-close situation.
Also, check for EBADF in SignalFd::drop and Dir::drop.
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Some things are not implemented yet in redox, so a lot of annotations
were added to remove functions when compiling for redox. Those functions
will hopefully be added in time, but for now it's better to have partial
support than none.
Blocked by https://github.com/rust-lang/libc/pull/1438
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Only two instances remain:
* For the deprecated sys::socket::CmsgSpace::new. We should probably
just remove that method.
* For sys::termios::Termios::default_uninit. This will require some
more thought.
Fixes #1096
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This is a minor optimization that allows for reduced sizes of datatypes. Since this pointer
will never be NULL, it's safe to use here
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Derive Clone, Copy, Eq, Hash, and PartialEq for all types. Not all
traits are supported by all types, which is why many are missing
some.
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This is a lower-level interface than `std::fs::ReadDir`. Notable differences:
* can be opened from a file descriptor (as returned by `openat`, perhaps
before knowing if the path represents a file or directory). Uses
`fdopendir` for this, available on all Unix platforms as of
rust-lang/libc#1018.
* implements `AsRawFd`, so it can be passed to `fstat`, `openat`, etc.
* can be iterated through multiple times without closing and reopening the
file descriptor. Each iteration rewinds when finished.
* returns entries for `.` (current directory) and `..` (parent directory).
* returns entries' names as a `CStr` (no allocation or conversion beyond
whatever libc does).
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