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Diffstat (limited to 'vendor/github.com/hpcloud/tail/winfile/winfile.go')
-rw-r--r--vendor/github.com/hpcloud/tail/winfile/winfile.go92
1 files changed, 92 insertions, 0 deletions
diff --git a/vendor/github.com/hpcloud/tail/winfile/winfile.go b/vendor/github.com/hpcloud/tail/winfile/winfile.go
new file mode 100644
index 000000000..aa7e7bc5d
--- /dev/null
+++ b/vendor/github.com/hpcloud/tail/winfile/winfile.go
@@ -0,0 +1,92 @@
+// +build windows
+
+package winfile
+
+import (
+ "os"
+ "syscall"
+ "unsafe"
+)
+
+// issue also described here
+//https://codereview.appspot.com/8203043/
+
+// https://github.com/jnwhiteh/golang/blob/master/src/pkg/syscall/syscall_windows.go#L218
+func Open(path string, mode int, perm uint32) (fd syscall.Handle, err error) {
+ if len(path) == 0 {
+ return syscall.InvalidHandle, syscall.ERROR_FILE_NOT_FOUND
+ }
+ pathp, err := syscall.UTF16PtrFromString(path)
+ if err != nil {
+ return syscall.InvalidHandle, err
+ }
+ var access uint32
+ switch mode & (syscall.O_RDONLY | syscall.O_WRONLY | syscall.O_RDWR) {
+ case syscall.O_RDONLY:
+ access = syscall.GENERIC_READ
+ case syscall.O_WRONLY:
+ access = syscall.GENERIC_WRITE
+ case syscall.O_RDWR:
+ access = syscall.GENERIC_READ | syscall.GENERIC_WRITE
+ }
+ if mode&syscall.O_CREAT != 0 {
+ access |= syscall.GENERIC_WRITE
+ }
+ if mode&syscall.O_APPEND != 0 {
+ access &^= syscall.GENERIC_WRITE
+ access |= syscall.FILE_APPEND_DATA
+ }
+ sharemode := uint32(syscall.FILE_SHARE_READ | syscall.FILE_SHARE_WRITE | syscall.FILE_SHARE_DELETE)
+ var sa *syscall.SecurityAttributes
+ if mode&syscall.O_CLOEXEC == 0 {
+ sa = makeInheritSa()
+ }
+ var createmode uint32
+ switch {
+ case mode&(syscall.O_CREAT|syscall.O_EXCL) == (syscall.O_CREAT | syscall.O_EXCL):
+ createmode = syscall.CREATE_NEW
+ case mode&(syscall.O_CREAT|syscall.O_TRUNC) == (syscall.O_CREAT | syscall.O_TRUNC):
+ createmode = syscall.CREATE_ALWAYS
+ case mode&syscall.O_CREAT == syscall.O_CREAT:
+ createmode = syscall.OPEN_ALWAYS
+ case mode&syscall.O_TRUNC == syscall.O_TRUNC:
+ createmode = syscall.TRUNCATE_EXISTING
+ default:
+ createmode = syscall.OPEN_EXISTING
+ }
+ h, e := syscall.CreateFile(pathp, access, sharemode, sa, createmode, syscall.FILE_ATTRIBUTE_NORMAL, 0)
+ return h, e
+}
+
+// https://github.com/jnwhiteh/golang/blob/master/src/pkg/syscall/syscall_windows.go#L211
+func makeInheritSa() *syscall.SecurityAttributes {
+ var sa syscall.SecurityAttributes
+ sa.Length = uint32(unsafe.Sizeof(sa))
+ sa.InheritHandle = 1
+ return &sa
+}
+
+// https://github.com/jnwhiteh/golang/blob/master/src/pkg/os/file_windows.go#L133
+func OpenFile(name string, flag int, perm os.FileMode) (file *os.File, err error) {
+ r, e := Open(name, flag|syscall.O_CLOEXEC, syscallMode(perm))
+ if e != nil {
+ return nil, e
+ }
+ return os.NewFile(uintptr(r), name), nil
+}
+
+// https://github.com/jnwhiteh/golang/blob/master/src/pkg/os/file_posix.go#L61
+func syscallMode(i os.FileMode) (o uint32) {
+ o |= uint32(i.Perm())
+ if i&os.ModeSetuid != 0 {
+ o |= syscall.S_ISUID
+ }
+ if i&os.ModeSetgid != 0 {
+ o |= syscall.S_ISGID
+ }
+ if i&os.ModeSticky != 0 {
+ o |= syscall.S_ISVTX
+ }
+ // No mapping for Go's ModeTemporary (plan9 only).
+ return
+}