From 44b04acdaf26373492901119c46936f5a5fac2db Mon Sep 17 00:00:00 2001
From: Miles Bader <miles@gnu.org>
Date: Tue, 16 May 1995 00:33:04 +0000
Subject: Initial revision

---
 utils/fsysopts.c | 124 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 124 insertions(+)
 create mode 100644 utils/fsysopts.c

diff --git a/utils/fsysopts.c b/utils/fsysopts.c
new file mode 100644
index 00000000..cf85e52a
--- /dev/null
+++ b/utils/fsysopts.c
@@ -0,0 +1,124 @@
+/* Set options in a running filesystem
+
+   Copyright (C) 1995 Free Software Foundation, Inc.
+
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include <hurd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <getopt.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <error.h>
+#include <argz.h>
+
+#include <hurd/fsys.h>
+
+/* ---------------------------------------------------------------- */
+
+#define USAGE "Usage: %s [OPTION...] FILE OPTIONS...\n" 
+
+static void
+usage(status)
+     int status;
+{
+  if (status != 0)
+    fprintf(stderr, "Try `%s --help' for more information.\n",
+	      program_invocation_name);
+  else
+    {
+      printf(USAGE, program_invocation_name);
+      printf("\
+\n\
+  -L, --dereference          if a translator exists, put the new one on top\n\
+  -R, --recursive            pass these options to any child translators\n\
+      --help                 give this help list\n\
+      --version              print version number of program\n\
+");
+    }
+
+  exit(status);
+}
+
+#define SHORT_OPTIONS "L?V"
+
+static struct option options[] =
+{
+  {"dereference", no_argument, 0, 'L'},
+  {"recursive", no_argument, 0, 'R'},
+  {"help", no_argument, 0, '?'},
+  {"version", no_argument, 0, 'V'},
+  {0, 0, 0, 0}
+};
+
+/* ---------------------------------------------------------------- */
+
+void 
+main(int argc, char *argv[])
+{
+  int opt;
+  error_t err;
+
+  /* The filesystem we're passing options to.  */
+  fsys_t fsys;
+
+  /* The file we use as a handle to get FSYS.  */
+  char *node_name = 0;
+  file_t node;
+
+  /* The filesystem options vector, in '\0' separated format.  */
+  char *argz = 0;
+  int argz_len = 0;
+
+  int deref = 0, recursive = 0;
+
+  /* Parse our options...  */
+  while ((opt = getopt_long(argc, argv, "-" SHORT_OPTIONS, options, 0)) != EOF)
+    switch (opt)
+      {
+      case 1:
+	node_name = optarg;
+	err = argz_create(argv + optind, &argz, &argz_len);
+	if (err)
+	  error(3, err, "Can't create options vector");
+	optind = argc;		/* stop parsing */
+	break;
+      case 'R': recursive = 1; break;
+      case 'L': deref = 1; break;
+      case 'V': printf ("%s 0.0\n", program_invocation_short_name); exit (0);
+      case '?': usage(0);
+      default:  usage(-1);
+      }
+
+  node = file_name_lookup(node_name, (deref ? 0 : O_NOTRANS), 0666);
+  if (node == MACH_PORT_NULL)
+    error(1, errno, "%s", node_name);
+
+  /* Get the filesystem for NODE.  */
+  err = file_getcontrol (node, &fsys);
+  if (err)
+    error (2, err, "%s", node_name);
+
+  err = fsys_set_options (fsys, argz, argz_len, recursive);
+  if (err)
+    error(5, err, "%s", node_name);
+
+  exit(0);
+}
-- 
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