1 files changed, 128 insertions, 0 deletions
diff --git a/utils/fsysopts.c b/utils/fsysopts.c
new file mode 100644
index 00000000..79e40979
--- /dev/null
+++ b/utils/fsysopts.c
@@ -0,0 +1,128 @@
+/* Set options in a running filesystem
+
+   Copyright (C) 1995, 1996, 1997, 1998 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 <argp.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+#include <error.h>
+#include <argz.h>
+#include <version.h>
+
+#include <hurd/fsys.h>
+
+const char *argp_program_version = STANDARD_HURD_VERSION (fsysopts);
+
+static struct argp_option options[] =
+{
+  {"dereference", 'L', 0, 0, "If FILESYS is a symbolic link, follow it"},
+  {"recursive",   'R', 0, 0, "Pass these options to any child translators"},
+  {0, 0, 0, 0}
+};
+static char *args_doc = "FILESYS [FS_OPTION...]";
+static char *doc = "Get or set command line options for running translator FILESYS."
+"\vThe legal values for FS_OPTION depends on FILESYS, but\
+ some common ones are: --readonly, --writable, --remount, --sync[=INTERVAL],\
+ and --nosync.\n\nIf no options are supplied, FILESYS's existing options\
+ are printed";
+
+/* ---------------------------------------------------------------- */
+
+int
+main(int argc, char *argv[])
+{
+  error_t err;
+
+  /* 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 a command line option.  */
+  error_t parse_opt (int key, char *arg, struct argp_state *state)
+    {
+      switch (key)
+	{
+	case ARGP_KEY_ARG:
+	  node_name = arg;
+	  err = argz_create (state->argv + state->next, &argz, &argz_len);
+	  if (err)
+	    error(3, err, "Can't create options vector");
+	  state->next = state->argc; /* stop parsing */
+	  break;
+
+	case 'R': recursive = 1; break;
+	case 'L': deref = 1; break;
+
+	case ARGP_KEY_NO_ARGS:
+	  argp_usage (state);
+	  return EINVAL;
+
+	default:
+	  return ARGP_ERR_UNKNOWN;
+	}
+      return 0;
+    }
+
+  struct argp argp = {options, parse_opt, args_doc, doc};
+
+  argp_parse (&argp, argc, argv, ARGP_IN_ORDER, 0, 0);
+
+  node = file_name_lookup (node_name, (deref ? 0 : O_NOLINK), 0666);
+  if (node == MACH_PORT_NULL)
+    error (1, errno, "%s", node_name);
+
+  if (argz_len)
+    {
+      /* The filesystem we're passing options to.  */
+      fsys_t fsys;
+
+      /* 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)
+	{
+	  argz_stringify (argz, argz_len, ' ');
+	  error(5, err, "%s: %s", node_name, argz);
+	}
+    }
+  else
+    {
+      err = file_get_fs_options (node, &argz, &argz_len);
+      if (err)
+	error (5, err, "%s", node_name);
+      argz_stringify (argz, argz_len, ' ');
+      puts (argz);
+    }
+
+  return 0;
+}