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fix(windows): serialize private root contention

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This commit is contained in:
marcopan
2026-08-18 14:49:56 +02:00
parent feee4ee648
commit b261dd4d3a
1 changed files with 23 additions and 6 deletions
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tools/tht/internal/safeio/private_root_windows.go
+23 -6
View File
@@ -82,7 +82,7 @@ func openWindowsPrivateDirectoryAt(parent windows.Handle, name string, ensure bo
return 0, false, ErrUnsafeFile
}
for attempt := 0; attempt < 2; attempt++ {
handle, err := openWindowsRelativeDirectory(parent, name)
handle, err := openWindowsRelativePrivateDirectoryWithRetry(parent, name)
if err == nil {
return handle, true, nil
}
@@ -100,6 +100,19 @@ func openWindowsPrivateDirectoryAt(parent windows.Handle, name string, ensure bo
return 0, false, ErrUnsafeFile
}
func openWindowsRelativePrivateDirectoryWithRetry(parent windows.Handle, name string) (windows.Handle, error) {
for attempt := 0; ; attempt++ {
handle, err := openWindowsRelativeDirectory(parent, name)
if !isWindowsRelativeSharingViolation(err) {
return handle, err
}
if attempt == windowsPrivateSharingRetries {
return 0, err
}
time.Sleep(time.Millisecond)
}
}
func openWindowsRelativeDirectory(parent windows.Handle, name string) (windows.Handle, error) {
handle, err := openWindowsRelativeObject(
parent,
@@ -280,6 +293,11 @@ func isWindowsRelativeCollision(err error) bool {
errors.Is(err, windows.STATUS_OBJECT_NAME_COLLISION)
}
func isWindowsRelativeSharingViolation(err error) bool {
return errors.Is(err, windows.ERROR_SHARING_VIOLATION) ||
errors.Is(err, windows.STATUS_SHARING_VIOLATION)
}
func (directory *windowsPrivateDirectory) captureAndValidate() error {
if directory == nil || directory.handle == 0 {
return ErrUnsafeFile
@@ -953,7 +971,7 @@ func windowsRelativeClaimAbsentOrOrphan(directory *windowsPrivateDirectory, sour
return false, ErrUnsafeFile
}
const windowsClaimSharingRetries = 100
const windowsPrivateSharingRetries = 100
func waitForWindowsRelativeClaimLoss(directory *windowsPrivateDirectory, source, claim string) (bool, error) {
for attempt := 0; ; attempt++ {
@@ -965,7 +983,7 @@ func waitForWindowsRelativeClaimLoss(directory *windowsPrivateDirectory, source,
if absentErr == nil && absent {
return true, nil
}
if attempt == windowsClaimSharingRetries {
if attempt == windowsPrivateSharingRetries {
return false, ErrUnsafeFile
}
time.Sleep(time.Millisecond)
@@ -980,11 +998,10 @@ func openWindowsPrivateClaimRegular(
) (*windowsPrivateRegularAt, error) {
for attempt := 0; ; attempt++ {
value, err := openWindowsPrivateRegularAt(directory, name, access, allowedLinks)
if !errors.Is(err, windows.ERROR_SHARING_VIOLATION) &&
!errors.Is(err, windows.STATUS_SHARING_VIOLATION) {
if !isWindowsRelativeSharingViolation(err) {
return value, err
}
if attempt == windowsClaimSharingRetries {
if attempt == windowsPrivateSharingRetries {
return nil, err
}
time.Sleep(time.Millisecond)