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oflag.go
38 lines (34 loc) · 774 Bytes
/
oflag.go
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package sysfs
import (
"os"
"github.com/tetratelabs/wazero/experimental/sys"
)
// toOsOpenFlag converts the input to the flag parameter of os.OpenFile
func toOsOpenFlag(oflag sys.Oflag) (flag int) {
// First flags are exclusive
switch oflag & (sys.O_RDONLY | sys.O_RDWR | sys.O_WRONLY) {
case sys.O_RDONLY:
flag |= os.O_RDONLY
case sys.O_RDWR:
flag |= os.O_RDWR
case sys.O_WRONLY:
flag |= os.O_WRONLY
}
// Run down the flags defined in the os package
if oflag&sys.O_APPEND != 0 {
flag |= os.O_APPEND
}
if oflag&sys.O_CREAT != 0 {
flag |= os.O_CREATE
}
if oflag&sys.O_EXCL != 0 {
flag |= os.O_EXCL
}
if oflag&sys.O_SYNC != 0 {
flag |= os.O_SYNC
}
if oflag&sys.O_TRUNC != 0 {
flag |= os.O_TRUNC
}
return withSyscallOflag(oflag, flag)
}