rngd.h

   1 /*
   2  * rngd.h -- rngd globals
   3  *
   4  * Copyright (C) 2001 Philipp Rumpf
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #ifndef RNGD__H
  22 #define RNGD__H
  23
  24 #define _GNU_SOURCE
  25
  26 #include "rng-tools-config.h"
  27
  28 #include <unistd.h>
  29 #include <stdint.h>
  30 #include <stdbool.h>
  31 #include <stdio.h>
  32 #include <syslog.h>
  33
  34 #include "fips.h"
  35
  36 enum {
  37         MAX_RNG_FAILURES                = 25,
  38 };
  39
  40 /* Command line arguments and processing */
  41 struct arguments {
  42         char *random_name;
  43         char *pid_file;
  44
  45         int random_step;
  46         int fill_watermark;
  47         double poll_timeout;
  48
  49         int quiet;
  50         int verbose;
  51         int daemon;
  52         int enable_tpm;
  53 };
  54 extern struct arguments *arguments;
  55
  56 /* structures to store rng information */
  57 struct rng {
  58         char *rng_name;
  59         int rng_fd;
  60         bool disabled;
  61         int failures;
  62
  63         int (*xread) (void *buf, size_t size, struct rng *ent_src);
  64         fips_ctx_t *fipsctx;
  65
  66         struct rng *next;
  67 };
  68
  69 /* Background/daemon mode */
  70 extern int am_daemon;                   /* Nonzero if we went daemon */
  71
  72
  73 /*
  74  * Routines and macros
  75  */
  76 #define message(priority,fmt,args...) do { \
  77         if (am_daemon) { \
  78                 syslog((priority), fmt, ##args); \
  79         } else { \
  80                 fprintf(stderr, fmt, ##args); \
  81                 fprintf(stderr, "\n"); \
  82         } \
  83 } while (0)
  84
  85 extern void src_list_add(struct rng *ent_src);
  86 extern int write_pid_file(const char *pid_fn);
  87 #endif /* RNGD__H */
  88