lib/make_directory.c

   1
   2 #include <string.h>
   3 #include <errno.h>
   4 #ifdef __BAREBOX__
   5 #include <fs.h>
   6 #include <malloc.h>
   7 #include <common.h>
   8 #endif
   9
  10 int make_directory(const char *dir)
  11 {
  12         char *s = strdup(dir);
  13         char *path = s;
  14         char c;
  15
  16         do {
  17                 c = 0;
  18
  19                 /* Bypass leading non-'/'s and then subsequent '/'s. */
  20                 while (*s) {
  21                         if (*s == '/') {
  22                                 do {
  23                                         ++s;
  24                                 } while (*s == '/');
  25                                 c = *s;         /* Save the current char */
  26                                 *s = 0;         /* and replace it with nul. */
  27                                 break;
  28                         }
  29                         ++s;
  30                 }
  31
  32                 if (mkdir(path, 0777) < 0) {
  33
  34                         /* If we failed for any other reason than the directory
  35                          * already exists, output a diagnostic and return -1.*/
  36 #ifdef __BAREBOX__
  37                         if (errno != -EEXIST)
  38 #else
  39                         if (errno != EEXIST)
  40 #endif
  41                                 break;
  42                 }
  43                 if (!c)
  44                         goto out;
  45
  46                 /* Remove any inserted nul from the path (recursive mode). */
  47                 *s = c;
  48
  49         } while (1);
  50
  51 out:
  52         free(path);
  53         return errno;
  54 }
  55 #ifdef __BAREBOX__
  56 EXPORT_SYMBOL(make_directory);
  57 #endif