Logo Search packages:      
Sourcecode: ksh version File versions

link3d.c

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*           Copyright (c) 1989-2007 AT&T Knowledge Ventures            *
*                      and is licensed under the                       *
*                  Common Public License, Version 1.0                  *
*                      by AT&T Knowledge Ventures                      *
*                                                                      *
*                A copy of the License is available at                 *
*            http://www.opensource.org/licenses/cpl1.0.txt             *
*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                  David Korn <dgk@research.att.com>                   *
*                   Eduardo Krell <ekrell@adexus.cl>                   *
*                                                                      *
***********************************************************************/
#pragma prototyped

#include "3d.h"

#ifdef link3d

int
link3d(const char* path, const char* target)
{
      register char*    sp;
      register char*    tp;
      register int      r;
      char*       t;
      int         oerrno;
      char        buf[PATH_MAX+1];
#if FS
      char        tmp[PATH_MAX+1];
      Mount_t*    mp;
#endif

      if (state.in_2d)
            return(LINK(path, target));
#if FS
      if (!fscall(NiL, MSG_link, 0, path, target))
            return(state.ret);
      mp = monitored();
#endif
      if (!(sp = pathreal(path, state.safe ? (P_SAFE|P_TOP) : P_TOP, NiL)))
            return(-1);
      sp = strncpy(buf, sp, PATH_MAX);
      if (!(tp = pathreal(target, P_PATHONLY|P_NOOPAQUE|P_SAFE, NiL)))
            return(-1);
      oerrno = errno;
      if ((r = LINK(sp, tp)) && errno == ENOENT && (t = strrchr(tp, '/')))
      {
            *t = 0;
            r = fs3d_mkdir(tp, S_IRWXU|S_IRWXG|S_IRWXO);
            *t = '/';
            if (!r)
            {
                  errno = oerrno;
                  r = LINK(sp, tp);
            }
      }
#if FS
      if (!r)
      {
            if (mp && !LSTAT(tp, &state.path.st))
            {
                  if (tp != tmp)
                  {
                        if (!(tp = pathreal(target, P_PATHONLY|P_NOOPAQUE|P_ABSOLUTE, NiL)))
                              return(r);
                        tp = strncpy(tmp, tp, PATH_MAX);
                  }
                  fscall(mp, MSG_link, 0, sp, tp);
            }
            for (mp = state.global; mp; mp = mp->global)
                  if (fssys(mp, MSG_link))
                  {
                        if (tp != tmp)
                        {
                              if (!(tp = pathreal(target, P_PATHONLY|P_NOOPAQUE|P_ABSOLUTE, NiL)))
                                    return(r);
                              tp = strncpy(tmp, tp, PATH_MAX);
                        }
                        fscall(mp, MSG_link, 0, sp, tp);
                  }
      }
#endif
      return(r);
}

#else

NoN(link)

#endif

Generated by  Doxygen 1.6.0   Back to index