X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;ds=sidebyside;f=src%2Fexec-cd.c;fp=src%2Fexec-cd.c;h=dde12cfb26d6cf99932f81c61be30c188e62a078;hb=8cf13bb177d92c93eb73dc8939777150536c2d00;hp=0000000000000000000000000000000000000000;hpb=6bf3f95de36c804c97716b2d0bdf10680c559044;p=util-vserver.git

diff --git a/src/exec-cd.c b/src/exec-cd.c
new file mode 100644
index 0000000..dde12cf
--- /dev/null
+++ b/src/exec-cd.c
@@ -0,0 +1,88 @@
+// $Id: exec-cd.c,v 1.5 2005/05/05 09:20:37 ensc Exp $    --*- 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 "util.h"
+#include <fcntl.h>
+#include <errno.h>
+
+#define ENSC_WRAPPERS_PREFIX	"exec-cd: "
+#define ENSC_WRAPPERS_FCNTL	1
+#define ENSC_WRAPPERS_UNISTD	1
+#include <wrappers.h>
+
+int	wrapper_exit_code = 255;
+
+static void
+showHelp(int fd, char const *cmd, int res)
+{
+  WRITE_MSG(fd, "Usage:  ");
+  WRITE_STR(fd, cmd);
+  WRITE_MSG(fd,
+	    " [--] <dir> <cmd> <args>*\n\n"
+	    "Please report bugs to " PACKAGE_BUGREPORT "\n");
+  exit(res);
+}
+
+static void
+showVersion()
+{
+  WRITE_MSG(1,
+	    "exec-cd " VERSION " -- executes commands within a safely changed cwd\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[])
+{
+  int		dirfd_root = Eopen("/", O_RDONLY, 0);
+  int		idx = 1;
+  int		dirfd_cur;
+
+  if (argc>=2) {
+    if (strcmp(argv[1], "--help")   ==0) showHelp(1, argv[0], 0);
+    if (strcmp(argv[1], "--version")==0) showVersion();
+    if (strcmp(argv[1], "--")       ==0) ++idx;
+  }
+
+  if (argc<idx+2) {
+    WRITE_MSG(2, "Not enough parameters; use '--help' for more information\n");
+    return wrapper_exit_code;
+  }
+
+
+  Echroot(".");
+  Echdir(argv[idx]);
+
+  dirfd_cur  = Eopen(".", O_RDONLY, 0);
+
+  Efchdir(dirfd_root);
+  Echroot(".");
+
+  Efchdir(dirfd_cur);
+
+  Eclose(dirfd_cur);
+  Eclose(dirfd_root);
+
+  Eexecv(argv[idx+1], argv+idx+1);
+}