util-vserver-0.30.208

[util-vserver.git] / lib / utils-legacy.h

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+// $Id: utils-legacy.h,v 1.1 2003/10/16 14:02:54 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.
+
+
+#ifndef H_UTIL_VSERVER_LIB_UTILS_COMPAT_H
+#define H_UTIL_VSERVER_LIB_UTILS_COMPAT_H
+
+#include <stdlib.h>
+#include <sys/types.h>
+
+  // read /proc/<pid>/status into 'buf' which has the size bufsize. When 'str'
+  // is non-null, search this string and return a pointer *after* it. When no
+  // such string could be found, return 0.  When 'str' is null return 'buf'.
+  //
+  // When this function fails (result==0) and errno is EAGAIN, the buffersize
+  // was too small and this function should be called again with a larger
+  // buffer.
+char *         utilvserver_getProcEntry(pid_t pid, char *str,
+                                        char *buf, size_t bufsize);
+
+  // Returns the suggested buffersize for reading a /proc/.../status
+  // file. Return-value can change when utilvserver_getProcEntry() was called.
+size_t         utilvserver_getProcEntryBufsize();
+
+#endif //  H_UTIL_VSERVER_LIB_UTILS_COMPAT_H