defs.c revision 37192 
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 1.16 1998/06/15 19:06:41 brian Exp $
27 */
28
29
30#include <stdlib.h>
31#include <string.h>
32#include <sys/errno.h>
33#if !defined(__FreeBSD__) || __FreeBSD__ < 3
34#include <time.h>
35#endif
36#include <unistd.h>
37
38#include "defs.h"
39
40void
41randinit()
42{
43#if __FreeBSD__ >= 3
44  static int initdone;		/* srandomdev() call is only required once */
45
46  if (!initdone) {
47    initdone = 1;
48    srandomdev();
49  }
50#else
51  srandom((time(NULL)^getpid())+random());
52#endif
53}
54
55ssize_t
56fullread(int fd, void *v, size_t n)
57{
58  size_t got, total;
59
60  for (total = 0; total < n; total += got)
61    switch ((got = read(fd, (char *)v + total, n - total))) {
62      case 0:
63        return total;
64      case -1:
65        if (errno == EINTR)
66          got = 0;
67        else
68          return -1;
69    }
70  return total;
71}
72
73static struct {
74  int mode;
75  const char *name;
76} modes[] = {
77  { PHYS_INTERACTIVE, "interactive" },
78  { PHYS_AUTO, "auto" },
79  { PHYS_DIRECT, "direct" },
80  { PHYS_DEDICATED, "dedicated" },
81  { PHYS_DDIAL, "ddial" },
82  { PHYS_BACKGROUND, "background" },
83  { PHYS_ALL, "*" },
84  { 0, 0 }
85};
86
87const char *
88mode2Nam(int mode)
89{
90  int m;
91
92  for (m = 0; modes[m].mode; m++)
93    if (modes[m].mode == mode)
94      return modes[m].name;
95
96  return "unknown";
97}
98
99int
100Nam2mode(const char *name)
101{
102  int m, got, len;
103
104  len = strlen(name);
105  got = -1;
106  for (m = 0; modes[m].mode; m++)
107    if (!strncasecmp(name, modes[m].name, len)) {
108      if (modes[m].name[len] == '\0')
109	return modes[m].mode;
110      if (got != -1)
111        return 0;
112      got = m;
113    }
114
115  return got == -1 ? 0 : modes[got].mode;
116}
117