--- /dev/null
+// $Id$ --*- c -*--
+
+// Copyright (C) 2004 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 "vserver.h"
+#include <errno.h>
+
+xid_t vc_getfilecontext(char const *filename)
+{
+ xid_t res;
+ uint32_t mask = VC_IATTR_XID;
+
+ if (vc_get_iattr(filename, &res, 0,&mask)==-1)
+ return VC_NOCTX;
+ else if ((mask&VC_IATTR_XID) && res!=VC_NOCTX)
+ return res;
+
+ errno = 0;
+ return VC_NOCTX;
+}
* \param remove_cap The linux capabilities which will be \b removed.
* \param flags Special flags which will be set.
*
- * \returns The new context-id, or VC_NOCTX on errors; errno
+ * \returns The new context-id, or VC_NOCTX on errors; \c errno
* will be set appropriately
*
* See http://vserver.13thfloor.at/Stuff/Logic.txt for details */
* \param xid The new context; special values are:
* - VC_DYNAMIC_XID which means to create a dynamic context
*
- * \returns the xid of the created context, or VC_NOCTX on errors. errno
+ * \returns the xid of the created context, or VC_NOCTX on errors. \c errno
* will be set appropriately. */
xid_t vc_ctx_create(xid_t xid);
return vc_set_iattr(filename, xid, 0, VC_IATTR_XID);
}
- inline static xid_t vc_getfilecontext(char const *filename) {
- xid_t res;
- if (vc_get_iattr(filename, &res, 0,0)==-1) return VC_NOCTX;
- return res;
- }
+ /** \brief Returns the context of \c filename
+ * \ingroup syscalls
+ *
+ * This function calls vc_get_iattr() with appropriate arguments to
+ * determine the context of \c filename. In error-case or when no context
+ * is assigned, \c VC_NOCTX will be returned. To differ between both cases,
+ * \c errno must be examined.
+ *
+ * \b WARNING: this function can modify \c errno although no error happened.
+ *
+ * \param filename The file to check
+ * \returns The assigned context, or VC_NOCTX when an error occured or no
+ * such assignment exists. \c errno will be 0 in the latter case */
+ xid_t vc_getfilecontext(char const *filename) VC_ATTR_NONNULL((1));
struct vc_set_sched {