From 840f33de326233d5fee1144334db41bf5c82a8fa Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Mon, 25 Feb 2019 18:45:32 +0100
Subject: conf: introduce configuration management

---
 conf/zsyscall_windows.go | 96 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 conf/zsyscall_windows.go

(limited to 'conf/zsyscall_windows.go')

diff --git a/conf/zsyscall_windows.go b/conf/zsyscall_windows.go
new file mode 100644
index 00000000..64bec1f4
--- /dev/null
+++ b/conf/zsyscall_windows.go
@@ -0,0 +1,96 @@
+// Code generated by 'go generate'; DO NOT EDIT.
+
+package conf
+
+import (
+	"syscall"
+	"unsafe"
+
+	"golang.org/x/sys/windows"
+)
+
+var _ unsafe.Pointer
+
+// Do the interface allocations only once for common
+// Errno values.
+const (
+	errnoERROR_IO_PENDING = 997
+)
+
+var (
+	errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
+)
+
+// errnoErr returns common boxed Errno values, to prevent
+// allocations at runtime.
+func errnoErr(e syscall.Errno) error {
+	switch e {
+	case 0:
+		return nil
+	case errnoERROR_IO_PENDING:
+		return errERROR_IO_PENDING
+	}
+	// TODO: add more here, after collecting data on the common
+	// error values see on Windows. (perhaps when running
+	// all.bat?)
+	return e
+}
+
+var (
+	modole32    = windows.NewLazySystemDLL("ole32.dll")
+	modshell32  = windows.NewLazySystemDLL("shell32.dll")
+	modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
+
+	procCoTaskMemFree                = modole32.NewProc("CoTaskMemFree")
+	procSHGetKnownFolderPath         = modshell32.NewProc("SHGetKnownFolderPath")
+	procFindFirstChangeNotificationW = modkernel32.NewProc("FindFirstChangeNotificationW")
+	procFindNextChangeNotification   = modkernel32.NewProc("FindNextChangeNotification")
+)
+
+func coTaskMemFree(pointer uintptr) {
+	syscall.Syscall(procCoTaskMemFree.Addr(), 1, uintptr(pointer), 0, 0)
+	return
+}
+
+func shGetKnownFolderPath(id *windows.GUID, flags uint32, token windows.Handle, path **uint16) (err error) {
+	r1, _, e1 := syscall.Syscall6(procSHGetKnownFolderPath.Addr(), 4, uintptr(unsafe.Pointer(id)), uintptr(flags), uintptr(token), uintptr(unsafe.Pointer(path)), 0, 0)
+	if r1 != 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
+func findFirstChangeNotification(path *uint16, watchSubtree bool, filter uint32) (handle windows.Handle, err error) {
+	var _p0 uint32
+	if watchSubtree {
+		_p0 = 1
+	} else {
+		_p0 = 0
+	}
+	r0, _, e1 := syscall.Syscall(procFindFirstChangeNotificationW.Addr(), 3, uintptr(unsafe.Pointer(path)), uintptr(_p0), uintptr(filter))
+	handle = windows.Handle(r0)
+	if handle == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
+
+func findNextChangeNotification(handle windows.Handle) (err error) {
+	r1, _, e1 := syscall.Syscall(procFindNextChangeNotification.Addr(), 1, uintptr(handle), 0, 0)
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
-- 
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