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build(deps): bump github.com/alexflint/go-filemutex from 1.1.0 to 1.2.0

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Bumps [github.com/alexflint/go-filemutex](https://github.com/alexflint/go-filemutex) from 1.1.0 to 1.2.0.
- [Release notes](https://github.com/alexflint/go-filemutex/releases)
- [Commits](https://github.com/alexflint/go-filemutex/compare/v1.1...v1.2.0)

---
updated-dependencies:
- dependency-name: github.com/alexflint/go-filemutex
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>
This commit is contained in:
dependabot[bot]
2022-12-26 16:52:25 +01:00
committed by Matthieu MOREL
parent 90ed30a55a
commit 615420fa9f
5 changed files with 33 additions and 95 deletions
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81
vendor/github.com/alexflint/go-filemutex/filemutex_windows.go generated vendored
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@ -6,53 +6,22 @@ package filemutex
import (
"syscall"
"unsafe"
"golang.org/x/sys/windows"
)
var (
modkernel32 = syscall.NewLazyDLL("kernel32.dll")
procLockFileEx = modkernel32.NewProc("LockFileEx")
procUnlockFileEx = modkernel32.NewProc("UnlockFileEx")
)
const (
lockfileFailImmediately = 1
lockfileExclusiveLock = 2
)
func lockFileEx(h syscall.Handle, flags, reserved, locklow, lockhigh uint32, ol *syscall.Overlapped) (err error) {
r1, _, e1 := syscall.Syscall6(procLockFileEx.Addr(), 6, uintptr(h), uintptr(flags), uintptr(reserved), uintptr(locklow), uintptr(lockhigh), uintptr(unsafe.Pointer(ol)))
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
func unlockFileEx(h syscall.Handle, reserved, locklow, lockhigh uint32, ol *syscall.Overlapped) (err error) {
r1, _, e1 := syscall.Syscall6(procUnlockFileEx.Addr(), 5, uintptr(h), uintptr(reserved), uintptr(locklow), uintptr(lockhigh), uintptr(unsafe.Pointer(ol)), 0)
if r1 == 0 {
if e1 != 0 {
err = error(e1)
} else {
err = syscall.EINVAL
}
}
return
}
// see https://msdn.microsoft.com/en-us/library/windows/desktop/ms681382(v=vs.85).aspx
var errLockUnlocked syscall.Errno = 0x9E
// FileMutex is similar to sync.RWMutex, but also synchronizes across processes.
// This implementation is based on flock syscall.
type FileMutex struct {
fd syscall.Handle
fd windows.Handle
}
func New(filename string) (*FileMutex, error) {
fd, err := syscall.CreateFile(&(syscall.StringToUTF16(filename)[0]), syscall.GENERIC_READ|syscall.GENERIC_WRITE,
syscall.FILE_SHARE_READ|syscall.FILE_SHARE_WRITE, nil, syscall.OPEN_ALWAYS, syscall.FILE_ATTRIBUTE_NORMAL, 0)
fd, err := windows.CreateFile(&(windows.StringToUTF16(filename)[0]), windows.GENERIC_READ|windows.GENERIC_WRITE,
windows.FILE_SHARE_READ|windows.FILE_SHARE_WRITE, nil, windows.OPEN_ALWAYS, windows.FILE_ATTRIBUTE_NORMAL, 0)
if err != nil {
return nil, err
}
@ -60,10 +29,9 @@ func New(filename string) (*FileMutex, error) {
}
func (m *FileMutex) TryLock() error {
var ol syscall.Overlapped
if err := lockFileEx(m.fd, lockfileFailImmediately|lockfileExclusiveLock, 0, 1, 0, &ol); err != nil {
if errno, ok := err.(syscall.Errno); ok {
if errno == syscall.Errno(0x21) {
if err := windows.LockFileEx(m.fd, windows.LOCKFILE_FAIL_IMMEDIATELY|windows.LOCKFILE_EXCLUSIVE_LOCK, 0, 1, 0, &windows.Overlapped{}); err != nil {
if errno, ok := err.(windows.Errno); ok {
if errno == windows.ERROR_LOCK_VIOLATION {
return AlreadyLocked
}
}
@ -73,42 +41,25 @@ func (m *FileMutex) TryLock() error {
}
func (m *FileMutex) Lock() error {
var ol syscall.Overlapped
if err := lockFileEx(m.fd, lockfileExclusiveLock, 0, 1, 0, &ol); err != nil {
return err
}
return nil
return windows.LockFileEx(m.fd, windows.LOCKFILE_EXCLUSIVE_LOCK, 0, 1, 0, &windows.Overlapped{})
}
func (m *FileMutex) Unlock() error {
var ol syscall.Overlapped
if err := unlockFileEx(m.fd, 0, 1, 0, &ol); err != nil {
return err
}
return nil
return windows.UnlockFileEx(m.fd, 0, 1, 0, &windows.Overlapped{})
}
func (m *FileMutex) RLock() error {
var ol syscall.Overlapped
if err := lockFileEx(m.fd, 0, 0, 1, 0, &ol); err != nil {
return err
}
return nil
return windows.LockFileEx(m.fd, 0, 0, 1, 0, &windows.Overlapped{})
}
func (m *FileMutex) RUnlock() error {
var ol syscall.Overlapped
if err := unlockFileEx(m.fd, 0, 1, 0, &ol); err != nil {
return err
}
return nil
return windows.UnlockFileEx(m.fd, 0, 1, 0, &windows.Overlapped{})
}
// Close unlocks the lock and closes the underlying file descriptor.
func (m *FileMutex) Close() error {
var ol syscall.Overlapped
if err := unlockFileEx(m.fd, 0, 1, 0, &ol); err != nil {
if err := windows.UnlockFileEx(m.fd, 0, 1, 0, &windows.Overlapped{}); err != nil && err != errLockUnlocked {
return err
}
return syscall.Close(m.fd)
return windows.Close(m.fd)
}