db/hash.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2000-2001,2005 Silicon Graphics, Inc.
   4  * All Rights Reserved.
   5  */
   6
   7 #include "libxfs.h"
   8 #include "addr.h"
   9 #include "command.h"
  10 #include "type.h"
  11 #include "io.h"
  12 #include "output.h"
  13 #include "hash.h"
  14
  15 static int hash_f(int argc, char **argv);
  16 static void hash_help(void);
  17
  18 static const cmdinfo_t hash_cmd =
  19         { "hash", NULL, hash_f, 1, 1, 0, N_("string"),
  20           N_("calculate hash value"), hash_help };
  21
  22 static void
  23 hash_help(void)
  24 {
  25         dbprintf(_(
  26 "\n"
  27 " 'hash' prints out the calculated hash value for a string using the\n"
  28 "directory/attribute code hash function.\n"
  29 "\n"
  30 " Usage:  \"hash <string>\"\n"
  31 "\n"
  32 ));
  33
  34 }
  35
  36 /* ARGSUSED */
  37 static int
  38 hash_f(
  39         int             argc,
  40         char            **argv)
  41 {
  42         xfs_dahash_t    hashval;
  43
  44         hashval = libxfs_da_hashname((unsigned char *)argv[1], (int)strlen(argv[1]));
  45         dbprintf("0x%x\n", hashval);
  46         return 0;
  47 }
  48
  49 void
  50 hash_init(void)
  51 {
  52         add_command(&hash_cmd);
  53 }