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// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build wasip1
package os
import (
"internal/poll"
"syscall"
)
func open(filePath string, flag int, perm uint32) (int, poll.SysFile, error) {
if filePath == "" {
return -1, poll.SysFile{}, syscall.EINVAL
}
absPath := filePath
// os.(*File).Chdir is emulated by setting the working directory to the
// absolute path that this file was opened at, which is why we have to
// resolve and capture it here.
if filePath[0] != '/' {
wd, err := syscall.Getwd()
if err != nil {
return -1, poll.SysFile{}, err
}
absPath = joinPath(wd, filePath)
}
fd, err := syscall.Open(absPath, flag, perm)
return fd, poll.SysFile{Path: absPath}, err
}
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