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New changes: memfd_secret implemented for RISC-V.
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* io_uring: fix the timeout_remove test
The test does a IORING_OP_TIMEOUT followed with a IORING_OP_TIMEOUT_REMOVE
and assumed we would get the CQEs in the same order.
Linux v5.18 changed how this works and we now get them in the reverse order.
The documentation doesn't explicitly say which CQE we should get first
so just make the test work with both cases.
* io_uring: fix the remove_buffers test
The original test was buggy but accidentally worked with kernels < 5.18
The test assumed that IORING_OP_REMOVE_BUFFERS removed from the start of
but in fact the documentation doesn't specify which buffer is removed,
only that a certain number of buffers are removed.
Starting with the kernel 5.18 the check for the `used_buffer_id` fails.
Turns out that previous kernels removed buffers in such a way that the
remaining buffer for this read would always be 0, however this isn't
true anymore.
Instead of checking a specific value just check that the `used_buffer_id`
corresponds to a valid ID.
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See #12014
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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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readv() is essentially identical to read() except for the buffer type,
this simplifies the API for the caller at the cost of not clearly mapping to the liburing C API.
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RecvBuffer is equivalent to ReadBuffer but tailored for recv only.
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Reads can be done in two ways with io_uring:
* using a simple buffer
* using a automatic buffer selection which requires the user to have
provided a number of buffers before
ReadBuffer let's the caller choose where the data should be read.
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These functions are needed to implement automatic buffer selection.
This maps to the IORING_OP_PROVIDE_BUFFERS and IORING_OP_PROVIDE_BUFFERS ops.
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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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Rename all references of sparcv9 to sparc64, to make Zig align more with
other projects. Also, added new function to convert glibc arch name to Zig
arch name, since it refers to the architecture as sparcv9.
This is based on the suggestion by @kubkon in PR 11847.
(https://github.com/ziglang/zig/pull/11487#pullrequestreview-963761757)
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Fixes #11382. Tested on ArchLinux 5.17.5-arch1-1.
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Add Seccomp bits for linux
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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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copy_cqes() is not guaranteed to return as many CQEs as provided in the
`wait_nr` argument, meaning the assert in `copy_cqe` can trigger.
Instead, loop until we do get at least one CQE returned.
This mimics the behaviour of liburing's _io_uring_get_cqe.
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For renameat, unlinkat, mkdirat, symlinkat and linkat the error code
differs between kernel 5.4 which returns EBADF and kernel 5.10 which returns EINVAL.
Fixes #10466
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zig fmt now replaces c_void with anyopaque to make updating
code easy.
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Fix rlimit_resource for MIPS and SPARC
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The old test "timeout_link_chain1" was ported from liburing test_timeout_link_chain1
https://github.com/axboe/liburing/blob/509873c4454012c5810c728695c21911c82acdc4/test/link-timeout.c#L539-L628
However it turns out that both fails with EBADF (-9) on Linux kernel 5.4.
The this new test skips properly on Linux kernel 5.4
and passes on Linux kernel 5.11.
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See #3811
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See #10247
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io_uring: adds link_timeout
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On MIPS and SPARC the RLIMIT kinds have different numbers than the other
architectures.
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std.os.linux: Add cancel and io_uring_prep_cancel
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Add method from liburing to queue (but not submit) a SQE to update the
user data of an existing poll operation.
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follow liburing's API as closely as possible.
Signed-off-by: Hiroaki Nakamura <hnakamur@gmail.com>
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Signed-off-by: Hiroaki Nakamura <hnakamur@gmail.com>
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SPARCv9: make more tests pass
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The TLS area may be located in the upper part of the address space and,
if the platform expects a constant offset to be applied, may make the tp
register calculation overflow.
Use +% instead of +, the overflow is harmless.
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