ksh/ksh-20120801-validate-fd.patch

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diff --git a/src/cmd/ksh93/sh/xec.c b/src/cmd/ksh93/sh/xec.c
--- a/src/cmd/ksh93/sh/xec.c
+++ b/src/cmd/ksh93/sh/xec.c
@@ -122,6 +122,7 @@ int iousepipe(Shell_t *shp)
return(1);
}
subpipe[2] = sh_fcntl(fd,F_dupfd_cloexec,10);
+ sh_iovalidfd(shp,subpipe[2]);
shp->fdstatus[subpipe[2]] = shp->fdstatus[1];
while(close(fd)<0 && errno==EINTR)
errno = err;