115 lines
2.8 KiB
Go
115 lines
2.8 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package platforms
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import (
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"runtime"
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"strings"
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)
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// isLinuxOS returns true if the operating system is Linux.
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//
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// The OS value should be normalized before calling this function.
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func isLinuxOS(os string) bool {
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return os == "linux"
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}
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// These function are generated from https://golang.org/src/go/build/syslist.go.
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//
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// We use switch statements because they are slightly faster than map lookups
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// and use a little less memory.
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// isKnownOS returns true if we know about the operating system.
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//
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// The OS value should be normalized before calling this function.
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func isKnownOS(os string) bool {
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switch os {
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case "aix", "android", "darwin", "dragonfly", "freebsd", "hurd", "illumos", "js", "linux", "nacl", "netbsd", "openbsd", "plan9", "solaris", "windows", "zos":
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return true
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}
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return false
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}
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// isArmArch returns true if the architecture is ARM.
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//
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// The arch value should be normalized before being passed to this function.
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func isArmArch(arch string) bool {
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switch arch {
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case "arm", "arm64":
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return true
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}
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return false
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}
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// isKnownArch returns true if we know about the architecture.
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//
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// The arch value should be normalized before being passed to this function.
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func isKnownArch(arch string) bool {
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switch arch {
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case "386", "amd64", "amd64p32", "arm", "armbe", "arm64", "arm64be", "ppc64", "ppc64le", "mips", "mipsle", "mips64", "mips64le", "mips64p32", "mips64p32le", "ppc", "riscv", "riscv64", "s390", "s390x", "sparc", "sparc64", "wasm":
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return true
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}
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return false
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}
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func normalizeOS(os string) string {
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if os == "" {
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return runtime.GOOS
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}
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os = strings.ToLower(os)
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switch os {
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case "macos":
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os = "darwin"
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}
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return os
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}
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// normalizeArch normalizes the architecture.
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func normalizeArch(arch, variant string) (string, string) {
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arch, variant = strings.ToLower(arch), strings.ToLower(variant)
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switch arch {
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case "i386":
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arch = "386"
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variant = ""
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case "x86_64", "x86-64":
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arch = "amd64"
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variant = ""
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case "aarch64", "arm64":
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arch = "arm64"
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switch variant {
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case "8", "v8":
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variant = ""
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}
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case "armhf":
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arch = "arm"
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variant = "v7"
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case "armel":
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arch = "arm"
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variant = "v6"
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case "arm":
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switch variant {
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case "", "7":
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variant = "v7"
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case "5", "6", "8":
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variant = "v" + variant
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}
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}
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return arch, variant
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}
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