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Signed-off-by: Costin-Robert Sin <sin.costinrobert@gmail.com>
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parking_lot provides synchronization primitives which aren't
poisoned on panic. This makes it easier to determine which tests
are failing, as a test failure no longer causes all subsequent tests
using that mutex to fail.
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Now that Nix's weird error types are eliminated, there's no reason not
to simply use Errno as the Error type.
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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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Based on
https://github.com/nix-rust/nix/issues/1384#issuecomment-774708486
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Travis has been super-slow lately (> 6 hours per build). Cirrus is much
faster: about 20 minutes. Cirrus also has slightly better test
coverage, mainly because it doesn't use SECCOMP.
Also,
* Fix the Redox CI build. The old Travis configuration didn't actually
build for Redox, so we never noticed that Redox can't be built with a
stable compiler. Thanks to @coolreader18 for finding this.
* Disable the udp_offload tests on cross-tested platforms. These tests
are failing with ENOPROTOOPT in Cirrus-CI. I suspect it's due to a
lack of support in QEMU. These tests were skipped on Travis because
its kernel was too old.
* Fix require_kernel_version on Cirrus-CI. Cirrus reports the Linux
kernel version as 4.19.112+, which the semver crate can't handle.
* Fix test_setfsuid on Cirrus. When run on Cirrus, it seems like the
file in /tmp gets deleted as soon as it's closed. Probably an
overzealous temporary file cleaner. Use /var/tmp, because no
temporary file cleaner should run in there.
* Skip mount tests on Cirrus. They fail for an unknown reason.
Issue #1351
* Skip the AF_ALG tests on Cirrus-CI
Issue #1352
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Fix tests. No change in documentation.
Resolves #1030.
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process_vm_readv requires it, and I'm not exactly sure which other
things do too.
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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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* Moved ptrace API into it's own module with cfg'ed modules exported for linux/android or BSDs.
* Replicated current linux API for BSD
* Added API functions to peek and poke memory to avoid needing to replicate deprecated linux API and remaining feature complete
* Added helper function for `PTRACE_KILL` requests
* Updated tests based on new API changes
* Added addition kill calls to `test_ptrace_cont` as inferior death doesn't happen immediately on OSX which caused issues in the tests.
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The libc_bitflags! macro was replaced with a non-recursive one supporting
only public structs. I could not figure out how to make the old macro work
with the upgrade, so I reworked part of the bitflags! macro directly to suit
our needs, much as the original recursive macro was made. There are no uses
of this macro for non-public structs, so this is not a problem for internal code.
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Used the libc_enum! macro to create enums for the ptrace event, request, and libc_bitflags for options constants defined in libc.
Also, replicated functionality to move from c_int to PtraceEvent enum in PR #728 as it appears to be abandoned.
Added utility function for detaching from tracee. Updated names and removed ptrace::ptrace namespace
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These include:
* PTRACE_TRACEME
* PTRACE_CONT
* PTRACE_ATTACH
* PTRACE_SYSCALL
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Nothing that nix currently binds is architecture-specific, and Android
supports ptrace just as much as non-Android Linux.
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