usr.bin/patch/mkpath.c

   1 /*
   2  *      $OpenBSD: mkpath.c,v 1.2 2005/06/20 07:14:06 otto Exp $
   3  *      $DragonFly: src/usr.bin/patch/mkpath.c,v 1.1 2007/09/29 23:11:10 swildner Exp $
   4  *      $NetBSD$
   5  */
   6
   7 /*
   8  * Copyright (c) 1983, 1992, 1993
   9  *      The Regents of the University of California.  All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 __RCSID("$NetBSD$");
  38
  39 #include <sys/types.h>
  40 #include <sys/stat.h>
  41 #include <err.h>
  42 #include <errno.h>
  43 #include <string.h>
  44
  45 int     mkpath(char *);
  46
  47 /* Code taken directly from mkdir(1).
  48
  49  * mkpath -- create directories.
  50  *      path     - path
  51  */
  52 int
  53 mkpath(char *path)
  54 {
  55         struct stat sb;
  56         char *slash;
  57         int done = 0;
  58
  59         slash = path;
  60
  61         while (!done) {
  62                 slash += strspn(slash, "/");
  63                 slash += strcspn(slash, "/");
  64
  65                 done = (*slash == '\0');
  66                 *slash = '\0';
  67
  68                 if (stat(path, &sb)) {
  69                         if (errno != ENOENT || (mkdir(path, 0777) &&
  70                             errno != EEXIST)) {
  71                                 warn("%s", path);
  72                                 return (-1);
  73                         }
  74                 } else if (!S_ISDIR(sb.st_mode)) {
  75                         warnx("%s: %s", path, strerror(ENOTDIR));
  76                         return (-1);
  77                 }
  78
  79                 *slash = '/';
  80         }
  81
  82         return (0);
  83 }
  84