std: add io_uring library - #6356

Merged

andrewrk merged 50 commits into

ziglang:masterfrom

jorangreef:io_uring

Oct 29, 2020

Commits on Sep 16, 2020

std: add io_uring library
jorangreef
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b340bbf
Add short license and copyright notice
jorangreef
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6f09796
Check kernel support for single_mmap, accept, and read/write
jorangreef
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491a434

Commits on Sep 17, 2020

Use != 0 for bitwise flag conditions
jorangreef
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ac1d9f7
Remove comment
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21c8136
Add IORING_SQ_CQ_OVERFLOW to std/os/bits/linux.zig
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d966fe6
Use std.builtin
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e33c466
Use x.y for C-style x->y instead of x.*.y
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8b030a6

Commits on Sep 19, 2020

@ptrCast fds.ptr to *const c_void for io_uring_register()
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ee59319
Do not register /dev/zero as an fd when testing queue_readv()
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5df0d28
Test IORING_REGISTER_FILES but avoid sparse fd sets
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b2a54b9
Fix std @import
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09f2f4a
Add splice_fd_in to io_uring_sqe and future-proof for anonymous unions
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873d1c8
Move to std/os/linux
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31533eb
Use linux.IORING_SQ_CQ_OVERFLOW
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cb59128
Remove dangling @import from std
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0d8c6a9
Return error.UnsupportedKernel for ENOSYS
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9fabae2
Remove unused import aliases
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c1f9d10
Rename to error.SubmissionQueueFull
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64ae9a6
Allow the kernel to drive feature detection
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f4df2f0
Remove default values from io_uring_sqe struct
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e7ae6f2
Zero the SQE slot and assign, instead of initializing with default values
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ba18420
Upgrade check_errno() to an exhaustive switch (safer)
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92407bf
Fix io_uring_sqe to use the names of the first member of each union
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4bc1b7a

Commits on Sep 20, 2020

Handle all possible syscall errors and bring errors in line with os.zig
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abebacd
Use os.fd_t instead of i32 and assert against c_int for syscall safety
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b672dc7
Fix opcode support detection for read/write test
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f22eea8
Add safety checks
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40293a0
Make enter(), flush_sq(), sq_ring_needs_enter(), cq_ring_needs_flush() public
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e51728a
Test structs and offsets
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77903f8
Add IORING_FEAT_FAST_POLL
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a853f00

Commits on Sep 21, 2020

Add io_uring syscalls to os.bits.linux.mips.SYS
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843c104
Cache mask instead of dereferencing mask pointer
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575ed94
Use @intCast instead of @truncate on io_uring_enter() result
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57603fd
Add flags to queue_fsync() signature as per liburing
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7719abb
Use @intCast instead of @truncate
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2d8df2b
Define SPLICE, PROVIDE_BUFFERS, REMOVE_BUFFERS and TEE opcodes and flags
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5f99d2c

Commits on Oct 3, 2020

Handle EBADFD (ring fd in bad state) in enter()
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95def89
Use load acquire semantics when reading the SQPOLL wakeup flag
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a9b1070
Add IORING_FEAT_POLL_32BITS
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c5b4fca

Commits on Oct 4, 2020

Expose available kernel features
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61ec6cb
Limit entries to u12, add errors for invalid entries, use mem.zeroInit
jorangreef
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e32c7d0
Allow for advanced non-sequential SQE allocation schemes
jorangreef
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69a55fc
Use load relaxed semantics when reading the SQPOLL wakeup flag
jorangreef
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3d2de6c
Add openat(), close(), connect(), send(), recv(), as well as tests
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6a53f4b
Improve openat/accept test debugging
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9091fcb
Skip openat test only for older kernels that do not fully support AT_FDCWD
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72bdfa5
Use const wherever possible
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958ff08
Split openat/close test into two separate tests
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9be2941

Commits on Oct 5, 2020

Test the range of user_data bits
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e9ba12f