1 // Copyright 2012 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package syscall_test 6 7 import ( 8 "io/ioutil" 9 "os" 10 "path/filepath" 11 "syscall" 12 "testing" 13 ) 14 15 func TestWin32finddata(t *testing.T) { 16 dir, err := ioutil.TempDir("", "go-build") 17 if err != nil { 18 t.Fatalf("failed to create temp directory: %v", err) 19 } 20 defer os.RemoveAll(dir) 21 22 path := filepath.Join(dir, "long_name.and_extension") 23 f, err := os.Create(path) 24 if err != nil { 25 t.Fatalf("failed to create %v: %v", path, err) 26 } 27 f.Close() 28 29 type X struct { 30 fd syscall.Win32finddata 31 got byte 32 pad [10]byte // to protect ourselves 33 34 } 35 var want byte = 2 // it is unlikely to have this character in the filename 36 x := X{got: want} 37 38 pathp, _ := syscall.UTF16PtrFromString(path) 39 h, err := syscall.FindFirstFile(pathp, &(x.fd)) 40 if err != nil { 41 t.Fatalf("FindFirstFile failed: %v", err) 42 } 43 err = syscall.FindClose(h) 44 if err != nil { 45 t.Fatalf("FindClose failed: %v", err) 46 } 47 48 if x.got != want { 49 t.Fatalf("memory corruption: want=%d got=%d", want, x.got) 50 } 51 } 52 53 func abort(funcname string, err error) { 54 panic(funcname + " failed: " + err.Error()) 55 } 56 57 func ExampleLoadLibrary() { 58 h, err := syscall.LoadLibrary("kernel32.dll") 59 if err != nil { 60 abort("LoadLibrary", err) 61 } 62 defer syscall.FreeLibrary(h) 63 proc, err := syscall.GetProcAddress(h, "GetVersion") 64 if err != nil { 65 abort("GetProcAddress", err) 66 } 67 r, _, _ := syscall.Syscall(uintptr(proc), 0, 0, 0, 0) 68 major := byte(r) 69 minor := uint8(r >> 8) 70 build := uint16(r >> 16) 71 print("windows version ", major, ".", minor, " (Build ", build, ")\n") 72 } 73
