init-db.c

   1 /*
   2  * GIT - The information manager from hell
   3  *
   4  * Copyright (C) Linus Torvalds, 2005
   5  */
   6 #include "cache.h"
   7
   8 static void safe_create_dir(const char *dir)
   9 {
  10         if (mkdir(dir, 0755) < 0) {
  11                 if (errno != EEXIST) {
  12                         perror(dir);
  13                         exit(1);
  14                 }
  15         }
  16 }
  17
  18 /*
  19  * If you want to, you can share the DB area with any number of branches.
  20  * That has advantages: you can save space by sharing all the SHA1 objects.
  21  * On the other hand, it might just make lookup slower and messier. You
  22  * be the judge.  The default case is to have one DB per managed directory.
  23  */
  24 int main(int argc, char **argv)
  25 {
  26         const char *sha1_dir;
  27         char *path;
  28         int len, i;
  29
  30         sha1_dir = get_object_directory();
  31         if (!gitenv(DB_ENVIRONMENT) && !gitenv(GIT_DIR_ENVIRONMENT)) {
  32                 /* We create leading paths only when we fall back
  33                  * to local .git/objects, at least for now.
  34                  */
  35                 safe_create_dir(DEFAULT_GIT_DIR_ENVIRONMENT);
  36                 fprintf(stderr, "defaulting to local storage area\n");
  37         }
  38         len = strlen(sha1_dir);
  39         path = xmalloc(len + 40);
  40         memcpy(path, sha1_dir, len);
  41
  42         safe_create_dir(sha1_dir);
  43         for (i = 0; i < 256; i++) {
  44                 sprintf(path+len, "/%02x", i);
  45                 safe_create_dir(path);
  46         }
  47         return 0;
  48 }