1 files changed, 107 insertions, 0 deletions
diff --git a/REORG.TODO/sunrpc/openchild.c b/REORG.TODO/sunrpc/openchild.c
new file mode 100644
index 0000000000..29f274a8ad
--- /dev/null
+++ b/REORG.TODO/sunrpc/openchild.c
@@ -0,0 +1,107 @@
+/*
+ * Copyright (c) 2010, Oracle America, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *     * Neither the name of the "Oracle America, Inc." nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
+ *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Open two pipes to a child process, one for reading, one for writing.
+ * The pipes are accessed by FILE pointers. This is NOT a public
+ * interface, but for internal use only!
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <rpc/rpc.h>
+#include <rpc/clnt.h>
+
+#include <libio/iolibio.h>
+#define fflush(s) _IO_fflush (s)
+#define __fdopen(fd,m) _IO_fdopen (fd,m)
+
+/*
+ * returns pid, or -1 for failure
+ */
+int
+_openchild (const char *command, FILE ** fto, FILE ** ffrom)
+{
+  int i;
+  int pid;
+  int pdto[2];
+  int pdfrom[2];
+
+  if (__pipe (pdto) < 0)
+    goto error1;
+  if (__pipe (pdfrom) < 0)
+    goto error2;
+  switch (pid = __fork ())
+    {
+    case -1:
+      goto error3;
+
+    case 0:
+      /*
+       * child: read from pdto[0], write into pdfrom[1]
+       */
+      __close (0);
+      __dup (pdto[0]);
+      __close (1);
+      __dup (pdfrom[1]);
+      fflush (stderr);
+      for (i = _rpc_dtablesize () - 1; i >= 3; i--)
+	__close (i);
+      fflush (stderr);
+      execlp (command, command, NULL);
+      perror ("exec");
+      _exit (~0);
+
+    default:
+      /*
+       * parent: write into pdto[1], read from pdfrom[0]
+       */
+      *fto = __fdopen (pdto[1], "w");
+      __close (pdto[0]);
+      *ffrom = __fdopen (pdfrom[0], "r");
+      __close (pdfrom[1]);
+      break;
+    }
+  return pid;
+
+  /*
+   * error cleanup and return
+   */
+error3:
+  __close (pdfrom[0]);
+  __close (pdfrom[1]);
+error2:
+  __close (pdto[0]);
+  __close (pdto[1]);
+error1:
+  return -1;
+}