kqueue: remove calls to os.NewSyscallError

calling os.NewSyscallError would silently break comparisons with the syscall constants. it didn't really add much value either, besides the "Kevent" prefix.

http://play.golang.org/p/YKbmygNDu4

diff --git a/kqueue.go b/kqueue.go
index 4f37b49a74095bb02cea907335fd88a4c7a9768b..34446521bc881ffb3940a20049867e030890d8ff 100644 (file)
--- a/kqueue.go
+++ b/kqueue.go
@@ -197,7 +197,7 @@ func (w *Watcher) addWatch(name string, flags uint32) error {
 
                watchfd, err = syscall.Open(name, openMode, 0700)
                if watchfd == -1 {
-                       return os.NewSyscallError("Open", err)
+                       return err
                }
 
                isDir = fi.IsDir()
@@ -246,7 +246,7 @@ func (w *Watcher) readEvents() {
                case <-w.done:
                        err := syscall.Close(w.kq)
                        if err != nil {
-                               w.Errors <- os.NewSyscallError("close", err)
+                               w.Errors <- err
                        }
                        close(w.Events)
                        close(w.Errors)
@@ -258,7 +258,7 @@ func (w *Watcher) readEvents() {
                kevents, err := read(w.kq, eventBuffer, &keventWaitTime)
                // EINTR is okay, the syscall was interrupted before timeout expired.
                if err != nil && err != syscall.EINTR {
-                       w.Errors <- os.NewSyscallError("Kevent", err)
+                       w.Errors <- err
                        continue
                }
 
@@ -419,7 +419,7 @@ func (w *Watcher) internalWatch(name string, fileInfo os.FileInfo) error {
 func kqueue() (kq int, err error) {
        kq, err = syscall.Kqueue()
        if kq == -1 {
-               return kq, os.NewSyscallError("Kqueue", err)
+               return kq, err
        }
        return kq, nil
 }
@@ -437,7 +437,7 @@ func register(kq int, fds []int, flags int, fflags uint32) error {
        // register the events
        success, err := syscall.Kevent(kq, changes, nil, nil)
        if success == -1 {
-               return os.NewSyscallError("Kevent", err)
+               return err
        }
        return nil
 }