usr/src/lib/libdll/common/dllfind.c

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1997-2010 AT&T Intellectual Property          *
   5 *                      and is licensed under the                       *
   6 *                  Common Public License, Version 1.0                  *
   7 *                    by AT&T Intellectual Property                     *
   8 *                                                                      *
   9 *                A copy of the License is available at                 *
  10 *            http://www.opensource.org/licenses/cpl1.0.txt             *
  11 *         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
  12 *                                                                      *
  13 *              Information and Software Systems Research               *
  14 *                            AT&T Research                             *
  15 *                           Florham Park NJ                            *
  16 *                                                                      *
  17 *                 Glenn Fowler <gsf@research.att.com>                  *
  18 *                                                                      *
  19 ***********************************************************************/
  20 #pragma prototyped
  21 /*
  22  * Glenn Fowler
  23  * AT&T Research
  24  */
  25
  26 #include <ast.h>
  27 #include <dlldefs.h>
  28 #include <error.h>
  29
  30 /*
  31  * find and load library name with optional version ver and dlopen() flags
  32  * at least one dlopen() is called to initialize dlerror()
  33  * if path!=0 then library path up to size chars copied to path with trailing 0
  34  * if name contains a directory prefix then library search is limited to the dir and siblings
  35  */
  36
  37 extern void*
  38 dllfind(const char* lib, const char* ver, int flags, char* path, size_t size)
  39 {
  40         char*   id;
  41         void*   dll;
  42
  43         if ((id = error_info.id) && (dll = dllplug(id, lib, ver, flags, path, size)))
  44                 return dll;
  45         return dllplug(NiL, lib, ver, flags, path, size);
  46 }