mkpath_for.c

   1 /*
   2  * Copyright (C) 2012-2020 all contributors <cmogstored-public@yhbt.net>
   3  * License: GPL-3.0+ <https://www.gnu.org/licenses/gpl-3.0.txt>
   4  */
   5 #include "cmogstored.h"
   6
   7 /*
   8  * "path" is the pathname for a file (not a directory)
   9  * returns -1 on error, sets errno to EACCES on invalid paths
  10  */
  11 int mog_mkpath_for(struct mog_svc *svc, char *path)
  12 {
  13         char *tip = path + 1;
  14         char *c = strchr(tip, '/');
  15         int rc = 0;
  16         int i;
  17
  18         /* refuse to create files at the top-level */
  19         if (c == NULL) {
  20                 errno = EACCES;
  21                 return -1;
  22         }
  23
  24         for (i = 0; c != NULL; i++) {
  25                 if (i > 0) {
  26                         *c = 0;
  27                         rc = mog_mkdir(svc, path, svc->mkcol_perms);
  28                         *c = '/';
  29                 }
  30
  31                 if (rc != 0 && errno != EEXIST)
  32                         return rc;
  33
  34                 tip = c + 1;
  35                 c = strchr(tip, '/');
  36         }
  37
  38         return 0;
  39 }