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Closes #12964
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std.os.uefi: fix some mistakes
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I don't know why that one argument was discarded. Is there a reason? It failed to compile.
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See page 1055 of <https://uefi.org/sites/default/files/resources/UEFI_Spec_2_3_1.pdf>.
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This implements the new addition to the API: `sock_accept`.
Reference commit of WASI spec:
0ba0c5e2e37625ca5a6d3e4255a998dfaa3efc52
For full details:
https://github.com/WebAssembly/WASI/commit/0ba0c5e2e37625ca5a6d3e4255a998dfaa3efc52
For entire spec at this commit:
https://github.com/WebAssembly/WASI/blob/0ba0c5e2e37625ca5a6d3e4255a998dfaa3efc52/phases/snapshot/docs.md
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stage2: pointer casting fixes and improvements
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Closes #12881
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Closes #12529
Closes #12511
Closes #6835
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it was returning a pointer to a parameter.
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std: fix definition of SIG_IGN, SIG_DFL, etc.
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I encountered this error today when testing the self-hosted compiler on
Windows.
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POSIX specifies that the sa_handler field of the sigaction struct may
be set to SIG_IGN or SIG_DFL. However, the current constants in the
standard library use the function pointer signature corresponding to
the sa_sigaction field instead.
This may not cause issues in practice because the fields usually occupy
the same memory in a union, but this isn't required by POSIX and there
may be systems we do not yet support that do this differently.
Fixing this also makes the Zig interface less confusing to use after
reading the man page.
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New changes: memfd_secret implemented for RISC-V.
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From https://man7.org/linux/man-pages/man7/inotify.7.html
> **IN_MASK_CREATE** (since Linux 4.18)
>
> Watch pathname only if it does not already have a watch associated with it; the error EEXIST results if pathname is already being watched.
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When lowering a struct type to an LLVM struct type, keep track of
whether there are any underaligned fields. If so, then make it a packed
llvm struct. This works because we already insert manual padding bytes
regardless.
We could unconditionally use an LLVM packed struct; the reason we bother
checking for underaligned fields is that it is a conservative choice, in
case LLVM handles packed structs less optimally. A future improvement
could simplify this code by unconditionally using packed LLVM structs
and then make sure measure perf is unaffected.
closes #12190
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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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The fstype argument to the mount system call can be null. To see an
example run "strace -e trace=mount unshare -m":
```
mount("none", "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0
...
```
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The previous definition depends on a non-lang-spec-compliant memory
layout for packed structs, which happens to trigger #11989 in stage2.
This commit changes the struct to be an extern struct with an
align(4) field. However, stage1 cannot handle this, so conditional
compilation logic is used to select different struct definitions
depending on stage1 vs stage2.
This works around #11989 but does not solve the underlying problem -
putting an extern union inside a packed struct will still trigger the
assert.
After this, both stage1 and stage2 std lib tests run assertion-clean
with a debug LLVM 13.
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Fixes: https://github.com/ziglang/zig/issues/11802
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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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all_mask is a value of type sigset_t, which is defined as an array type
[N]u32. However, all_mask references sigset_t.len, but, the array type
does not have a len field. Fix is to use @typeInfo(sigset_t).Array.len
instead.
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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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This is minorly breaking as e.g. std.os.linux.MFD_CLOEXEC is now
std.os.linux.MFD.CLOEXEC.
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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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the list parameter should be a multi-item pointer rather than a single-item
pointer. see: https://linux.die.net/man/2/setgroups
> setgroups() sets the supplementary group IDs for the calling process...
> the size argument specifies the number of supplementary group IDs in the buffer pointed to by list.
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