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mkdir3d.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

#if defined(__STDPP__directive) && defined(__STDPP__hide)
__STDPP__directive pragma pp:hide mkdir
#else
#define mkdir        ______mkdir
#endif
#define _def_syscall_3d 1
#define _LS_H           1

#include "3d.h"

#undef      _def_syscall_3d
#if defined(__STDPP__directive) && defined(__STDPP__hide)
__STDPP__directive pragma pp:nohide mkdir
#else
#undef  mkdir
#endif

#include "FEATURE/syscall"

/*
 * mkdir() will always create a directory on the highest layer
 * mkdir() will create intermediate directories if they virtually exist
 * mkdir() will do a chdir() if a virtual dot directory is created
 */

int
mkdir3d(const char* path, mode_t mode)
{
      register char*    sp;
      register char*    cp;
      register int      r;
      char        buf[PATH_MAX + 1];
#if FS
      Mount_t*    mp;
#endif

      if (state.real)
      {
#if FS
            mp = 0;
#endif
            sp = (char*)path;
      }
#if FS
      else if (!fscall(NiL, MSG_mkdir, 0, path, mode))
            return(state.ret);
#endif
      else
      {
#if FS
            mp = monitored();
#endif
            if (!(sp = pathreal(path, P_PATHONLY|P_NOOPAQUE, NiL)))
                  return(-1);
      }
      if (state.path.level || state.level && (sp == state.pwd || streq(sp, state.pwd)) || (r = MKDIR(sp, mode)) && errno == ENOENT)
      {
            /*
             * copy canonicalized pathname into buf
             */

            if (*sp != '/') sp = state.path.name;
            cp = buf;
            while (*cp = *sp++) cp++;
            do
            {
                  while (*--cp != '/');
                  if (cp <= buf) return(-1);
                  *cp = 0;
                  r = !pathreal(buf, 0, NiL) || !streq(buf, state.path.name);
                  *cp = '/';
            } while (r);
            *cp = '/';
            do
            {
                  r = *++cp;
                  if (r == 0 || r == '/')
                  {
                        *cp = 0;
                        sp = pathreal(buf, P_PATHONLY, NiL);
                        *cp = r;
                        if (!sp) return(-1);
                        if (sp == state.dot) sp = state.pwd;
                        if (r = MKDIR(sp, r ? (mode|S_IWUSR|S_IXUSR) : mode)) return(r);
#if FS
                        if (fsmonitored(state.path.name) && !LSTAT(state.path.name, &state.path.st))
                              fscall(state.path.monitor, MSG_mkdir, 0, state.path.name, state.path.st.st_mode);
#endif
                        if (sp == state.pwd || streq(sp, state.pwd))
                        {
                              state.level = 0;
                              CHDIR(state.pwd);
                        }
                  }
            } while (*cp);
      }
#if FS
      if (!r)
      {
            if (mp) fscall(mp, MSG_mkdir, 0, path, mode);
            for (mp = state.global; mp; mp = mp->global)
                  if (fssys(mp, MSG_mkdir))
                        fscall(mp, MSG_mkdir, 0, path, mode);
      }
#endif
      return(r);
}

/*
 * 3d internal mkdir to skip pathreal(path, ...)
 */

int
fs3d_mkdir(const char* path, mode_t mode)
{
      int   r;

      state.real++;
      r = mkdir(path, mode);
      state.real--;
      return(r);
}

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