Initial revision

1 files changed, 180 insertions, 0 deletions

diff --git a/utils/settrans.c b/utils/settrans.c
new file mode 100644
index 00000000..e5f79847
--- /dev/null
+++ b/utils/settrans.c
@@ -0,0 +1,180 @@
+/* Set a file's translator.
+
+   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 <start-trans.h>
+
+/* ---------------------------------------------------------------- */
+
+#define USAGE "Usage: %s [OPTION...] FILE [TRANSLATOR...]\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\
+  -a, --active               Set FILE's active translator\n\
+  -p, --passive              Set FILE's passive translator\n\
+  -c, --create               Create FILE if it doesn't exist\n\
+  -f, --force                Set the translator even if one already exists\n\
+  -k, --keep-active          Keep any currently running active translator\n\
+                             when setting the passive translator\n\
+  -L, --dereference          If a translator exists, put the new one on top\n\
+  -t, --list                 Show FILE's passive translator\n\
+      --help                 Give this help list\n\
+");
+    }
+
+  exit(status);
+}
+
+#define SHORT_OPTIONS "apcfkLt?"
+
+static struct option options[] =
+{
+  {"active", no_argument, 0, 'a'},
+  {"passive", no_argument, 0, 'p'},
+  {"keep-active", no_argument, 0, 'k'},
+  {"create", no_argument, 0, 'c'},
+  {"force", no_argument, 0, 'f'},
+  {"dereference", no_argument, 0, 'L'},
+  {"list", no_argument, 0, 't'},
+  {"help", no_argument, 0, '?'},
+  {0, 0, 0, 0}
+};
+
+/* ---------------------------------------------------------------- */
+
+void 
+main(int argc, char *argv[])
+{
+  int opt;
+  error_t err;
+
+  /* The filesystem node we're putting a translator on.  */
+  char *node_name;
+  file_t node;
+
+  /* The translator's arg vector, in '\0' separated format.  */
+  char *argz = 0;
+  int argz_len = 0;
+
+  /* The control port for any active translator we start up.  */
+  fsys_t active_control = MACH_PORT_NULL;
+
+  /* Flags to pass to file_set_translator.  By default we only set a
+     translator if there's no existing one.  */
+  int flags = FS_TRANS_SET | FS_TRANS_EXCL;
+
+  /* Various option flags.  */
+  int passive = 0, active = 0, create = 0, force = 0, deref = 0, list = 0;
+  int keep_active = 0;
+
+  /* Parse our options...  */
+  while ((opt = getopt_long(argc, argv, "+" SHORT_OPTIONS, options, 0)) != EOF)
+    switch (opt)
+      {
+      case 'a': active = 1; break;
+      case 'p': passive = 1; break;
+      case 'f': force = 1; break;
+      case 'k': keep_active = 1; break;
+      case 'c': create = 1; break;
+      case 'L': deref = 1; break;
+      case 't': list = 1; break;
+      case '?': usage(0);
+      default:  usage(1);
+      }
+
+  if (optind == argc)
+    {
+      fprintf(stderr,
+	      "%s: Missing filename argument\n", program_invocation_name);
+      usage(1);
+    }
+
+  node_name = argv[optind++];
+
+  if (!active && !passive)
+    passive = 1;
+
+  node =
+    file_name_lookup(node_name,
+		     (deref ? 0 : O_NOTRANS) | (create ? O_CREAT : 0),
+		     0666);
+  if (node == MACH_PORT_NULL)
+    error(1, errno, "%s", node_name);
+
+  if (list)
+    /* Print out NODE's translator instead of setting it.  */
+    {
+      char buf[1024], *trans = buf;
+      int len = sizeof(buf);
+
+      err = file_get_translator(node, &trans, &len);
+      if (err)
+	error(2, err, "%s", node_name);
+
+      argz_stringify(trans, len);
+      printf("%s\n", trans);
+    }
+  else
+    {
+      err = argz_create(argv + optind, &argz, &argz_len);
+      if (err)
+	error(3, err, "Can't create argz vector");
+
+      if (active && argz_len > 0)
+	err = start_translator(node, argz, argz_len, 60000, &active_control);
+      if (err)
+	error(4, err, "%s", argz);
+
+      if (force)
+	/* Kill any existing translators.  */
+	flags &= ~FS_TRANS_EXCL;
+
+      err =
+	file_set_translator(node,
+			    passive ? flags : 0,
+			    (active || !keep_active) ? flags : 0,
+			    0,
+			    argz, argz_len,
+			    active_control, MACH_MSG_TYPE_MOVE_SEND);
+      if (err)
+	error(5, err, "%s", node_name);
+    }
+
+  exit(0);
+}