diff options
| author | Bryan C. Mills <bcmills@google.com> | 2018-10-16 16:05:51 -0400 |
|---|---|---|
| committer | Bryan C. Mills <bcmills@google.com> | 2018-11-02 15:56:35 +0000 |
| commit | 3a0d6091d64f0204d0942764d3356ac0572be0e3 (patch) | |
| tree | de9061544254ca81adfc3ad185c098d455cbcae0 /src/internal/syscall | |
| parent | bd4b6ca781e7e82580620011f8af2a7f11c5c239 (diff) | |
| download | go-3a0d6091d64f0204d0942764d3356ac0572be0e3.tar.xz | |
internal/syscall/windows: add LockFileEx and UnlockFileEx for use in cmd/go
Updates #26794
Change-Id: Ic1d3078176721f3d2e5d8188c234383037babbaf
Reviewed-on: https://go-review.googlesource.com/c/145177
Run-TryBot: Bryan C. Mills <bcmills@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Alex Brainman <alex.brainman@gmail.com>
Diffstat (limited to 'src/internal/syscall')
| -rw-r--r-- | src/internal/syscall/windows/syscall_windows.go | 12 | ||||
| -rw-r--r-- | src/internal/syscall/windows/zsyscall_windows.go | 26 |
2 files changed, 38 insertions, 0 deletions
diff --git a/src/internal/syscall/windows/syscall_windows.go b/src/internal/syscall/windows/syscall_windows.go index 66fe9324c0..121132f6f7 100644 --- a/src/internal/syscall/windows/syscall_windows.go +++ b/src/internal/syscall/windows/syscall_windows.go @@ -12,7 +12,11 @@ import ( const ( ERROR_SHARING_VIOLATION syscall.Errno = 32 + ERROR_LOCK_VIOLATION syscall.Errno = 33 + ERROR_NOT_SUPPORTED syscall.Errno = 50 + ERROR_CALL_NOT_IMPLEMENTED syscall.Errno = 120 ERROR_INVALID_NAME syscall.Errno = 123 + ERROR_LOCK_FAILED syscall.Errno = 167 ERROR_NO_UNICODE_TRANSLATION syscall.Errno = 1113 ) @@ -255,6 +259,14 @@ func Rename(oldpath, newpath string) error { return MoveFileEx(from, to, MOVEFILE_REPLACE_EXISTING) } +//sys LockFileEx(file syscall.Handle, flags uint32, reserved uint32, bytesLow uint32, bytesHigh uint32, overlapped *syscall.Overlapped) (err error) = kernel32.LockFileEx +//sys UnlockFileEx(file syscall.Handle, reserved uint32, bytesLow uint32, bytesHigh uint32, overlapped *syscall.Overlapped) (err error) = kernel32.UnlockFileEx + +const ( + LOCKFILE_FAIL_IMMEDIATELY = 0x00000001 + LOCKFILE_EXCLUSIVE_LOCK = 0x00000002 +) + const MB_ERR_INVALID_CHARS = 8 //sys GetACP() (acp uint32) = kernel32.GetACP diff --git a/src/internal/syscall/windows/zsyscall_windows.go b/src/internal/syscall/windows/zsyscall_windows.go index 2212697b1b..9527a370a4 100644 --- a/src/internal/syscall/windows/zsyscall_windows.go +++ b/src/internal/syscall/windows/zsyscall_windows.go @@ -49,6 +49,8 @@ var ( procMoveFileExW = modkernel32.NewProc("MoveFileExW") procGetModuleFileNameW = modkernel32.NewProc("GetModuleFileNameW") procWSASocketW = modws2_32.NewProc("WSASocketW") + procLockFileEx = modkernel32.NewProc("LockFileEx") + procUnlockFileEx = modkernel32.NewProc("UnlockFileEx") procGetACP = modkernel32.NewProc("GetACP") procGetConsoleCP = modkernel32.NewProc("GetConsoleCP") procMultiByteToWideChar = modkernel32.NewProc("MultiByteToWideChar") @@ -127,6 +129,30 @@ func WSASocket(af int32, typ int32, protocol int32, protinfo *syscall.WSAProtoco return } +func LockFileEx(file syscall.Handle, flags uint32, reserved uint32, bytesLow uint32, bytesHigh uint32, overlapped *syscall.Overlapped) (err error) { + r1, _, e1 := syscall.Syscall6(procLockFileEx.Addr(), 6, uintptr(file), uintptr(flags), uintptr(reserved), uintptr(bytesLow), uintptr(bytesHigh), uintptr(unsafe.Pointer(overlapped))) + if r1 == 0 { + if e1 != 0 { + err = errnoErr(e1) + } else { + err = syscall.EINVAL + } + } + return +} + +func UnlockFileEx(file syscall.Handle, reserved uint32, bytesLow uint32, bytesHigh uint32, overlapped *syscall.Overlapped) (err error) { + r1, _, e1 := syscall.Syscall6(procUnlockFileEx.Addr(), 5, uintptr(file), uintptr(reserved), uintptr(bytesLow), uintptr(bytesHigh), uintptr(unsafe.Pointer(overlapped)), 0) + if r1 == 0 { + if e1 != 0 { + err = errnoErr(e1) + } else { + err = syscall.EINVAL + } + } + return +} + func GetACP() (acp uint32) { r0, _, _ := syscall.Syscall(procGetACP.Addr(), 0, 0, 0, 0) acp = uint32(r0) |