50 lines
1.4 KiB
Go
50 lines
1.4 KiB
Go
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// SPDX-License-Identifier: BSD-3-Clause
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// Code in this file was copied from `go/src/os/file_posix.go`.
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// Copyright 2009 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 `go.LICENSE` file.
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//go:build unix || (js && wasm) || wasip1 || windows
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package ufs
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import (
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"golang.org/x/sys/unix"
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)
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// ignoringEINTR makes a function call and repeats it if it returns an
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// EINTR error. This appears to be required even though we install all
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// signal handlers with SA_RESTART: see https://go.dev/issue/22838,
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// https://go.dev/issue/38033, https://go.dev/issue/38836,
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// https://go.dev/issue/40846. Also, https://go.dev/issue/20400 and
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// https://go.dev/issue/36644 are issues in which a signal handler is
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// installed without setting SA_RESTART. None of these are the common case,
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// but there are enough of them that it seems that we can't avoid
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// an EINTR loop.
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func ignoringEINTR(fn func() error) error {
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for {
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err := fn()
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if err != unix.EINTR {
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return err
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}
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}
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}
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// syscallMode returns the syscall-specific mode bits from Go's portable mode bits.
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func syscallMode(i FileMode) (o FileMode) {
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o |= i.Perm()
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if i&ModeSetuid != 0 {
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o |= unix.S_ISUID
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}
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if i&ModeSetgid != 0 {
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o |= unix.S_ISGID
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}
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if i&ModeSticky != 0 {
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o |= unix.S_ISVTX
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}
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// No mapping for Go's ModeTemporary (plan9 only).
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return
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}
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