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alongside the typical msghdr struct, Zig has added a msghdr_const
type that can be used with sendmsg which allows const data to
be provided. I believe that data pointed to by the iov and control
fields in msghdr are also left unmodified, in which case they can
be marked const as well.
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Previously, updating the `SYS` enum for each architecture required
manually looking at the syscall tables and inserting any new additions.
This commit adds a tool, `generate_linux_syscalls.zig`, that automates
this process using the syscall tables in the Linux source tree. On
architectures without a table, it runs `zig cc` as a pre-processor to
extract the system-call numbers from the Linux headers.
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* os/linux/io_uring: add recvmsg and sendmsg
* Use std.os.iovec and std.os.iovec_const
* Remove msg_ prefix in msghdr and msghdr_const in arm64 etc
* Strip msg_ prefix in msghdr and msghdr_const for linux arm-eabi
* Copy msghdr and msghdr_const from i386 to mips
* Add sockaddr to lib/std/os/linux/mips.zig
* Copy msghdr and msghdr_const from x86_64 to riscv64
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On Linux, locking fails with EAGAIN (vs. EACCES on other systems).
This commit also adds FcntlErrors for EDEADLK and ENOLCK.
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On MIPS and SPARC the RLIMIT kinds have different numbers than the other
architectures.
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I incorrectly assumed that __kernel_timespec was used when not linking
libc, however that is not the case. `std.os.timespec` is used both for
libc and non-libc cases. `__kernel_timespec` is a special struct that is
used only for io_uring.
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Also move some usingnamespace test cases from compare_output to
behavior.
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Tests with no names are executed when using `zig test` regardless of the
`--test-filter` used. Non-named tests should be used when simply
importing unit tests from another file. This allows `zig test` to find
all the appropriate tests, even when using `--test-filter`.
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The proposal #9629 is now accepted, usingnamespace stays but no longer
puts identifiers in scope.
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* std lib tests are passing on x86_64-linux with and without -lc
* stage2 is building from source on x86_64-linux
* down to 38 remaining uses of `usingnamespace`
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Now there is only 1 architecture-specific file for Linux kernel bits.
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The main purpose of this branch is to explore avoiding the
`usingnamespace` feature of the zig language, specifically with regards
to `std.os` and related functionality.
If this experiment is successful, it will provide a data point on
whether or not it would be practical to entirely remove `usingnamespace`
from the language.
In this commit, `usingnamespace` has been completely eliminated from
the Linux x86_64 compilation path, aside from io_uring.
The behavior tests pass, however that's as far as this branch goes. It is
very breaking, and a lot more work is needed before it could be
considered mergeable. I wanted to put a pull requset up early so that
zig programmers have time to provide feedback.
This is progress towards closing #6600 since it clarifies where the
actual "owner" of each declaration is, and reduces the number of
different ways to import the same declarations.
One of the main organizational strategies used here is to do namespacing
with real namespaces (e.g. structs) rather than by having declarations
share a common prefix (the C strategy). It's no coincidence that
`usingnamespace` has similar semantics to `#include` and becomes much
less necessary when using proper namespaces.
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We already have a LICENSE file that covers the Zig Standard Library. We
no longer need to remind everyone that the license is MIT in every single
file.
Previously this was introduced to clarify the situation for a fork of
Zig that made Zig's LICENSE file harder to find, and replaced it with
their own license that required annual payments to their company.
However that fork now appears to be dead. So there is no need to
reinforce the copyright notice in every single file.
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This lets only the OSes that uses them to import them, and removes
dependencies on bits.zig for the os/<os>/<arch>.zig files
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Previously the fd parameter was ignored and so the result would not get
populated. Now it passes the fd pointer to the inline assembly so that
the results can be observed.
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Some syscalls such as fadvise require an extra argument to comply with
the register pair alignment imposed by the ABI.
Wacky, isn't it?
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add SPDX license identifier
copyright ownership is zig contributors
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