1 /*
2  * iperf, Copyright (c) 2014-2017, The Regents of the University of
3  * California, through Lawrence Berkeley National Laboratory (subject
4  * to receipt of any required approvals from the U.S. Dept. of
5  * Energy).  All rights reserved.
6  *
7  * If you have questions about your rights to use or distribute this
8  * software, please contact Berkeley Lab's Technology Transfer
9  * Department at TTD@lbl.gov.
10  *
11  * NOTICE.  This software is owned by the U.S. Department of Energy.
12  * As such, the U.S. Government has been granted for itself and others
13  * acting on its behalf a paid-up, nonexclusive, irrevocable,
14  * worldwide license in the Software to reproduce, prepare derivative
15  * works, and perform publicly and display publicly.  Beginning five
16  * (5) years after the date permission to assert copyright is obtained
17  * from the U.S. Department of Energy, and subject to any subsequent
18  * five (5) year renewals, the U.S. Government is granted for itself
19  * and others acting on its behalf a paid-up, nonexclusive,
20  * irrevocable, worldwide license in the Software to reproduce,
21  * prepare derivative works, distribute copies to the public, perform
22  * publicly and display publicly, and to permit others to do so.
23  *
24  * This code is distributed under a BSD style license, see the LICENSE
25  * file for complete information.
26  */
27 #ifndef __IPERF_UTIL_H
28 #define __IPERF_UTIL_H
29 
30 #include "iperf_config.h"
31 #include "cjson.h"
32 #include <sys/select.h>
33 #include <stddef.h>
34 
35 int readentropy(void *out, size_t outsize);
36 
37 void fill_with_repeating_pattern(void *out, size_t outsize);
38 
39 void make_cookie(char *);
40 
41 int is_closed(int);
42 
43 double timeval_to_double(struct timeval *tv);
44 
45 int timeval_equals(struct timeval *tv0, struct timeval *tv1);
46 
47 double timeval_diff(struct timeval *tv0, struct timeval *tv1);
48 
49 void cpu_util(double pcpu[3]);
50 
51 const char* get_system_info(void);
52 
53 const char* get_optional_features(void);
54 
55 cJSON* iperf_json_printf(const char *format, ...);
56 
57 void iperf_dump_fdset(FILE *fp, char *str, int nfds, fd_set *fds);
58 
59 #ifndef HAVE_DAEMON
60 extern int daemon(int nochdir, int noclose);
61 #endif /* HAVE_DAEMON */
62 
63 #ifndef HAVE_GETLINE
64 ssize_t getline(char **buf, size_t *bufsiz, FILE *fp);
65 #endif /* HAVE_GETLINE */
66 
67 #endif
68