Import util-vserver rev 2847

[util-vserver.git] / src / secure-umount.c

diff --git a/src/secure-umount.c b/src/secure-umount.c
new file mode 100644 (file)
index 0000000..245e934
--- /dev/null
+++ b/src/secure-umount.c
@@ -0,0 +1,85 @@
+// $Id: secure-umount.c 2403 2006-11-24 23:06:08Z dhozac $    --*- c++ -*--
+
+// Copyright (C) 2003 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.de>
+//  
+// 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; version 2 of the License.
+//  
+// 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+#ifdef HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#include "pathconfig.h"
+
+#include "wrappers.h"
+#include "util.h"
+
+int    wrapper_exit_code = 1;
+
+static void
+showHelp(int fd, char const *cmd, int res)
+{
+  WRITE_MSG(fd, "Usage:  ");
+  WRITE_STR(fd, cmd);
+  WRITE_MSG(fd,
+           "[--help] [--version] <dir>\n\n"
+           "Please report bugs to " PACKAGE_BUGREPORT "\n");
+
+  exit(res);
+}
+
+static void
+showVersion()
+{
+  WRITE_MSG(1,
+           "secure-umount " VERSION " -- secure umounting of directories\n"
+           "This program is part of " PACKAGE_STRING "\n\n"
+           "Copyright (C) 2003 Enrico Scholz\n"
+           VERSION_COPYRIGHT_DISCLAIMER);
+  exit(0);
+}
+
+int main(int argc, char *argv[])
+{
+  char const * dir;
+  int          root_fd;
+  int          this_fd;
+  char *       umount_cmd[] = { UMOUNT_PROG, "-l", "-n", ".", 0 };
+
+  if (argc<2) {
+    WRITE_MSG(2, "Try '");
+    WRITE_STR(2, argv[0]);
+    WRITE_MSG(2, " --help' for more information.\n");
+    return EXIT_FAILURE;
+  }
+
+  if (strcmp(argv[1], "--help")==0)    showHelp(1, argv[0], 0);
+  if (strcmp(argv[1], "--version")==0) showVersion();
+
+  dir = argv[1];
+  if (strcmp(dir, "--")==0 && argc>=3) dir = argv[2];
+
+  root_fd = Eopen("/", O_RDONLY, 0);
+  Echroot(".");
+  Echdir(dir);
+  this_fd = Eopen(".", O_RDONLY, 0);
+  Efchdir(root_fd);
+  Echroot(".");
+  Efchdir(this_fd);
+
+  Eclose(root_fd);
+  Eclose(this_fd);
+
+  Eexecv(umount_cmd[0], umount_cmd);
+}