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cases we ignore it (eg: read/write) to maintain chmod-after-open semantics but in other cases we do care, eg: creating files, access() etc. Never ignore errors from VOP_ACCESS() on immutable files. This apparently comes from BSDI (from Keith Bostic) via NetBSD. PR: 5148 Submitted by: Yoshiro MIHIRA <sanpei@yy.cs.keio.ac.jp>