usr/src/lib/libast/common/path/pathsetlink.c

   1 /***********************************************************************
   2 *                                                                      *
   3 *               This software is part of the ast package               *
   4 *          Copyright (c) 1985-2010 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 *                  David Korn <dgk@research.att.com>                   *
  19 *                   Phong Vo <kpv@research.att.com>                    *
  20 *                                                                      *
  21 ***********************************************************************/
  22 #pragma prototyped
  23 /*
  24 * Glenn Fowler
  25 * AT&T Bell Laboratories
  26 */
  27
  28 #include "univlib.h"
  29
  30 /*
  31  * create symbolic name from external representation text in buf
  32  * the arg order matches link(2)
  33  */
  34
  35 int
  36 pathsetlink(const char* buf, const char* name)
  37 {
  38         register char*  t = (char*)buf;
  39 #ifdef UNIV_MAX
  40         register char*  s = (char*)buf;
  41         register char*  v;
  42         int             n;
  43         char            tmp[PATH_MAX];
  44
  45         while (*s)
  46         {
  47                 if (*s++ == univ_cond[0] && !strncmp(s - 1, univ_cond, univ_size))
  48                 {
  49                         s--;
  50                         t = tmp;
  51                         for (n = 0; n < UNIV_MAX; n++)
  52                                 if (*univ_name[n])
  53                         {
  54                                 *t++ = ' ';
  55 #ifdef ATT_UNIV
  56                                 *t++ = '1' + n;
  57                                 *t++ = ':';
  58 #else
  59                                 for (v = univ_name[n]; *t = *v++; t++);
  60                                 *t++ = '%';
  61 #endif
  62                                 for (v = (char*)buf; v < s; *t++ = *v++);
  63                                 for (v = univ_name[n]; *t = *v++; t++);
  64                                 for (v = s + univ_size; *t = *v++; t++);
  65                         }
  66                         t = tmp;
  67                         break;
  68                 }
  69         }
  70 #endif
  71         return(symlink(t, name));
  72 }