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7d69d983c4
This change syncs the IBM internal version of sys/unix with the public repository. There are a variety of new syscalls and const definitions that have been accumulated over the past few years to support developers using Go on the platform. Old simulations of calls like 'epoll' and 'fstatfs' have been replaced with their real counterparts. The zos/s390x syscalls also have extensive trampolining to handle zos systems that might not have support for some of these new system calls. Closes golang/go#67071 Change-Id: I973d9e0abca2b05365308cf2b890438e50ae5957 Reviewed-on: https://go-review.googlesource.com/c/sys/+/582035 Reviewed-by: David Chase <drchase@google.com> Reviewed-by: Bill O'Farrell <billotosyr@gmail.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Auto-Submit: Ian Lance Taylor <iant@google.com> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
20 lines
705 B
Go
20 lines
705 B
Go
// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build darwin || zos
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package unix
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import "unsafe"
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// ReadDirent reads directory entries from fd and writes them into buf.
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func ReadDirent(fd int, buf []byte) (n int, err error) {
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// Final argument is (basep *uintptr) and the syscall doesn't take nil.
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// 64 bits should be enough. (32 bits isn't even on 386). Since the
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// actual system call is getdirentries64, 64 is a good guess.
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// TODO(rsc): Can we use a single global basep for all calls?
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var base = (*uintptr)(unsafe.Pointer(new(uint64)))
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return Getdirentries(fd, buf, base)
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}
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