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This commit is contained in:
Jes Cok 2023-11-15 21:00:33 +08:00
parent 4701606311
commit 27587df5e1
1 changed files with 2 additions and 10 deletions
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12
src/syscall/syscall_windows.go
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@ -382,19 +382,10 @@ func Open(path string, mode int, perm uint32) (fd Handle, err error) {
createmode = OPEN_EXISTING
}
// See https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-createfilea.
// See issue 35358 for details.
const _FILE_FLAG_WRITE_THROUGH = 0x80000000
setFlagWriteThrough := false
var attrs uint32 = FILE_ATTRIBUTE_NORMAL
if perm&S_IWRITE == 0 {
attrs = FILE_ATTRIBUTE_READONLY
if createmode == CREATE_ALWAYS {
if mode&O_SYNC != 0 {
attrs |= _FILE_FLAG_WRITE_THROUGH
setFlagWriteThrough = true
}
// We have been asked to create a read-only file.
// If the file already exists, the semantics of
// the Unix open system call is to preserve the
@ -419,7 +410,8 @@ func Open(path string, mode int, perm uint32) (fd Handle, err error) {
// Necessary for opening directory handles.
attrs |= FILE_FLAG_BACKUP_SEMANTICS
}
if !setFlagWriteThrough && mode&O_SYNC != 0 {
if mode&O_SYNC != 0 {
const _FILE_FLAG_WRITE_THROUGH = 0x80000000
attrs |= _FILE_FLAG_WRITE_THROUGH
}
return CreateFile(pathp, access, sharemode, sa, createmode, attrs, 0)