os: delete os.EINVAL and so on
The set of errors forwarded by the os package varied with system and
was therefore non-portable.
Three helpers added for portable error checking: IsExist, IsNotExist, and IsPermission.
One or two more may need to come, but let's keep the set very small to discourage
thinking about errors that way.
R=mikioh.mikioh, gustavo, r, rsc
CC=golang-dev
https://golang.org/cl/5672047
diff --git a/src/pkg/net/fd.go b/src/pkg/net/fd.go
index bf0a387..334da7f 100644
--- a/src/pkg/net/fd.go
+++ b/src/pkg/net/fd.go
@@ -506,7 +506,7 @@
}
defer fd.decref()
if fd.sysfile == nil {
- return 0, os.EINVAL
+ return 0, syscall.EINVAL
}
var err error
