init-db.c

   1 #include "cache.h"
   2
   3 int main(int argc, char **argv)
   4 {
   5         char *sha1_dir = getenv(DB_ENVIRONMENT), *path;
   6         int len, i, fd;
   7
   8         if (mkdir(".dircache", 0700) < 0) {
   9                 perror("unable to create .dircache");
  10                 exit(1);
  11         }
  12
  13         /*
  14          * If you want to, you can share the DB area with any number of branches.
  15          * That has advantages: you can save space by sharing all the SHA1 objects.
  16          * On the other hand, it might just make lookup slower and messier. You
  17          * be the judge.
  18          */
  19         sha1_dir = getenv(DB_ENVIRONMENT);
  20         if (sha1_dir) {
  21                 struct stat st;
  22                 if (!stat(sha1_dir, &st) < 0 && S_ISDIR(st.st_mode))
  23                         return;
  24                 fprintf(stderr, "DB_ENVIRONMENT set to bad directory %s: ", sha1_dir);
  25         }
  26
  27         /*
  28          * The default case is to have a DB per managed directory.
  29          */
  30         sha1_dir = DEFAULT_DB_ENVIRONMENT;
  31         fprintf(stderr, "defaulting to private storage area\n");
  32         len = strlen(sha1_dir);
  33         if (mkdir(sha1_dir, 0700) < 0) {
  34                 if (errno != EEXIST) {
  35                         perror(sha1_dir);
  36                         exit(1);
  37                 }
  38         }
  39         path = malloc(len + 40);
  40         memcpy(path, sha1_dir, len);
  41         for (i = 0; i < 256; i++) {
  42                 sprintf(path+len, "/%02x", i);
  43                 if (mkdir(path, 0700) < 0) {
  44                         if (errno != EEXIST) {
  45                                 perror(path);
  46                                 exit(1);
  47                         }
  48                 }
  49         }
  50         return 0;
  51 }