Initial revision

1 files changed, 122 insertions, 0 deletions

diff --git a/libdiskfs/opts-std-runtime.c b/libdiskfs/opts-std-runtime.c
new file mode 100644
index 00000000..90e5fe9c
--- /dev/null
+++ b/libdiskfs/opts-std-runtime.c
@@ -0,0 +1,122 @@
+/* Parse standard run-time options
+
+   Copyright (C) 1995, 1996 Free Software Foundation, Inc.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd 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.
+
+   The GNU Hurd 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 "priv.h"
+
+static const struct argp_option
+std_runtime_options[] =
+{
+  {"remount", 'u',  0, 0, "Flush any meta-data cached in core"},
+  {0, 0}
+};
+
+struct parse_hook
+{
+  int readonly, sync, sync_interval, remount;
+};
+
+/* Implement the options in H, and free H.  */
+static error_t
+set_opts (struct parse_hook *h)
+{
+  error_t err = 0;
+
+  /* Do things in this order: remount, change readonly, change-sync; always
+     do the remount while the disk is readonly, even if only temporarily.  */
+
+  if (h->remount)
+    {
+      /* We can only remount while readonly.  */
+      err = diskfs_set_readonly (1);
+      if (!err)
+	err = diskfs_remount ();
+    }
+
+  if (h->readonly != diskfs_readonly)
+    if (err)
+      diskfs_set_readonly (h->readonly); /* keep the old error.  */
+    else
+      err = diskfs_set_readonly (h->readonly);
+
+  /* Change sync mode.  */
+  if (h->sync)
+    {
+      diskfs_synchronous = 1;
+      diskfs_set_sync_interval (0); /* Don't waste time syncing.  */
+    }
+  else
+    {
+      diskfs_synchronous = 0;
+      if (h->sync_interval >= 0)
+	diskfs_set_sync_interval (h->sync_interval);
+    }
+
+  free (h);
+
+  return err;
+}
+
+/* Parse diskfs standard runtime options.  */
+static error_t
+parse_opt (int opt, char *arg, struct argp_state *state)
+{
+  struct parse_hook *h = state->hook;
+  switch (opt)
+    {
+    case 'r': h->readonly = 1; break;
+    case 'w': h->readonly = 0; break;
+    case 'u': h->remount = 1; break;
+    case 'n': h->sync_interval = 0; h->sync = 0; break;
+    case 's':
+      if (arg)
+	h->sync_interval = atoi (arg);
+      else
+	h->sync = 1;
+      break;
+
+    case ARGP_KEY_INIT:
+      h = state->hook = malloc (sizeof (struct parse_hook));
+      if (! h)
+	return ENOMEM;
+      h->readonly = diskfs_readonly;
+      h->sync = diskfs_synchronous;
+      h->sync_interval = -1;
+      h->remount = 0;
+      break;
+
+    case ARGP_KEY_ERROR:
+      free (h); break;
+
+    case ARGP_KEY_SUCCESS:
+      return set_opts (h);
+
+    default:
+      return ARGP_ERR_UNKNOWN;
+    }
+  return 0;
+}
+
+static const struct argp common_argp = { diskfs_common_options, parse_opt };
+static const struct argp *parents[] = { &common_argp, 0 };
+
+const struct argp diskfs_std_runtime_argp =
+{
+  std_runtime_options, parse_opt, 0, 0, parents
+};