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068df07d11
Go 1.17 and earlier used a different syntax for build constraint comments, starting with "+build". Go 1.18 changed this to the modern "go:build" form as part of standardizing the structure of toolchain directive comments, and so for a while it was convention to include comments in both styles to allow building with both old and new Go compilers. However, Go 1.17 is no longer supported, and regardless of that we only expect OpenTofu to be built with the specific version we have selected in "go.mod" and ".go-version" anyway, so we no longer need the legacy form of these comments: the all supported Go toolchains now support the new form, which this commit retains. golangci-lint v2.6.0 includes a check for this legacy form, so removing this will also allow us to upgrade to a newer version of that linter aggregator in a future commit. Signed-off-by: Martin Atkins <mart@degeneration.co.uk>
30 lines
1.0 KiB
Go
30 lines
1.0 KiB
Go
// Copyright (c) The OpenTofu Authors
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// SPDX-License-Identifier: MPL-2.0
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// Copyright (c) 2023 HashiCorp, Inc.
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// SPDX-License-Identifier: MPL-2.0
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//go:build !windows
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package replacefile
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import (
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"os"
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)
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// AtomicRename renames from the source path to the destination path,
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// atomically replacing any file that might already exist at the destination.
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//
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// Typically this operation can succeed only if the source and destination
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// are within the same physical filesystem, so this function is best reserved
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// for cases where the source and destination exist in the same directory and
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// only the local filename differs between them.
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//
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// The Unix implementation of AtomicRename relies on the atomicity of renaming
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// that is required by the ISO C standard, which in turn assumes that Go's
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// implementation of rename is calling into a system call that preserves that
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// guarantee.
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func AtomicRename(source, destination string) error {
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// On Unix systems, a rename is sufficiently atomic.
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return os.Rename(source, destination)
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}
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