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gefs: don't allow removal of locked files

--- a/sys/src/cmd/gefs/fs.c

+++ b/sys/src/cmd/gefs/fs.c

@@ -1914,6 +1914,8 @@

 	}

 	if(f->dent->gone)

 		error(Ephase);

+	if((f->dent->qid.type & QTEXCL) && f->dent->ref != 1)

+		error(Elocked);

 	/*

 	 * we need a double check that the file is in the tree

 	 * here, because the walk to the fid is done in a reader

@@ -2005,8 +2007,7 @@

 	}

 	if(f->dent->gone)

 		error(Ephase);

-	if(f->dent->qid.type & QTEXCL)

-	if(f->dent->ref != 1)

+	if((f->dent->qid.type & QTEXCL) && f->dent->ref != 1)

 		error(Elocked);

 	if(m->mode & ORCLOSE)

 		if((e = candelete(f)) != nil)

-- 

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