mirror of
https://github.com/kubesphere/kubekey.git
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51 lines
1.2 KiB
Go
51 lines
1.2 KiB
Go
/*
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Copyright 2022 The KubeSphere 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 filesystem
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import (
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"os"
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"syscall"
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)
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const (
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sIsuid = syscall.S_ISUID
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sIsgid = syscall.S_ISGID
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sIsvtx = syscall.S_ISVTX
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)
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// ToChmodPerm converts Go permission bits to POSIX permission bits.
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//
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// This differs from fromFileMode in that we preserve the POSIX versions of
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// setuid, setgid and sticky in m, because we've historically supported those
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// bits, and we mask off any non-permission bits.
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func ToChmodPerm(m os.FileMode) (perm uint32) {
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const mask = os.ModePerm | sIsuid | sIsgid | sIsvtx
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perm = uint32(m & mask)
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if m&os.ModeSetuid != 0 {
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perm |= sIsuid
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}
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if m&os.ModeSetgid != 0 {
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perm |= sIsgid
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}
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if m&os.ModeSticky != 0 {
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perm |= sIsvtx
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}
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return perm
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}
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