Line data    Source code

       1             : /*
       2             :    mkdir -p
       3             : 
       4             :    Copyright (C) Amitay Isaacs  2014
       5             :    Copyright (C) Martin Schwenke  2014
       6             : 
       7             :    This program is free software; you can redistribute it and/or modify
       8             :    it under the terms of the GNU General Public License as published by
       9             :    the Free Software Foundation; either version 3 of the License, or
      10             :    (at your option) any later version.
      11             : 
      12             :    This program is distributed in the hope that it will be useful,
      13             :    but WITHOUT ANY WARRANTY; without even the implied warranty of
      14             :    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      15             :    GNU General Public License for more details.
      16             : 
      17             :    You should have received a copy of the GNU General Public License
      18             :    along with this program; if not, see <http://www.gnu.org/licenses/>.
      19             : */
      20             : #include "replace.h"
      21             : #include <sys/stat.h>
      22             : #include <libgen.h>
      23             : #include "mkdir_p.h"
      24             : 
      25       16372 : int mkdir_p(const char *dir, int mode)
      26             : {
      27             :         char t[PATH_MAX];
      28             :         ssize_t len;
      29             :         int ret;
      30             : 
      31       16372 :         if (strcmp(dir, "/") == 0) {
      32           0 :                 return 0;
      33             :         }
      34             : 
      35       16372 :         if (strcmp(dir, ".") == 0) {
      36           0 :                 return 0;
      37             :         }
      38             : 
      39             :         /* Try to create directory */
      40       16372 :         ret = mkdir(dir, mode);
      41             :         /* Succeed if that worked or if it already existed */
      42       16372 :         if (ret == 0 || errno == EEXIST) {
      43       16353 :                 return 0;
      44             :         }
      45             :         /* Fail on anything else except ENOENT */
      46          19 :         if (errno != ENOENT) {
      47           0 :                 return ret;
      48             :         }
      49             : 
      50             :         /* Create ancestors */
      51          19 :         len = strlen(dir);
      52          19 :         ret = snprintf(t, sizeof(t), "%s", dir);
      53          19 :         if (ret != len) {
      54           0 :                 errno = ENAMETOOLONG;
      55           0 :                 return -1;
      56             :         }
      57             : 
      58          19 :         ret = mkdir_p(dirname(t), mode);
      59          19 :         if (ret != 0) {
      60           0 :                 return ret;
      61             :         }
      62             : 
      63             :         /* Create directory */
      64          19 :         ret = mkdir(dir, mode);
      65          19 :         if ((ret == -1) && (errno == EEXIST)) {
      66           0 :                 ret = 0;
      67             :         }
      68             : 
      69          19 :         return ret;
      70             : }