defs.c revision 36285 
1/*-
2 * Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 *	$Id: defs.c,v 1.11.4.12 1998/05/15 23:58:21 brian Exp $
27 */
28
29
30#include <stdlib.h>
31#include <string.h>
32#include <sys/errno.h>
33#include <time.h>
34#include <unistd.h>
35
36#include "defs.h"
37
38void
39randinit()
40{
41#if __FreeBSD__ >= 2
42  static int initdone;
43
44  if (!initdone) {
45    initdone = 1;
46    srandomdev();
47  }
48#else
49  srandom((time(NULL)^getpid())+random());
50#endif
51}
52
53ssize_t
54fullread(int fd, void *v, size_t n)
55{
56  size_t got, total;
57
58  for (total = 0; total < n; total += got)
59    switch ((got = read(fd, (char *)v + total, n - total))) {
60      case 0:
61        return total;
62      case -1:
63        if (errno == EINTR)
64          got = 0;
65        else
66          return -1;
67    }
68  return total;
69}
70
71static struct {
72  int mode;
73  const char *name;
74} modes[] = {
75  { PHYS_MANUAL, "interactive" },
76  { PHYS_DEMAND, "auto" },
77  { PHYS_DIRECT, "direct" },
78  { PHYS_DEDICATED, "dedicated" },
79  { PHYS_PERM, "ddial" },
80  { PHYS_1OFF, "background" },
81  { PHYS_ALL, "*" },
82  { 0, 0 }
83};
84
85const char *
86mode2Nam(int mode)
87{
88  int m;
89
90  for (m = 0; modes[m].mode; m++)
91    if (modes[m].mode == mode)
92      return modes[m].name;
93
94  return "unknown";
95}
96
97int
98Nam2mode(const char *name)
99{
100  int m, got, len;
101
102  len = strlen(name);
103  got = -1;
104  for (m = 0; modes[m].mode; m++)
105    if (!strncasecmp(name, modes[m].name, len)) {
106      if (modes[m].name[len] == '\0')
107	return modes[m].mode;
108      if (got != -1)
109        return 0;
110      got = m;
111    }
112
113  return got == -1 ? 0 : modes[got].mode;
114}
115