freebsd-dev/usr.sbin/ppp/defs.c

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1997-12-21 12:11:13 +00:00
/*-
* Copyright (c) 1997 Brian Somers <brian@Awfulhak.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
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* $Id: defs.c,v 1.16 1998/06/15 19:06:41 brian Exp $
*/
#include <stdlib.h>
#include <string.h>
#include <sys/errno.h>
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#if !defined(__FreeBSD__) || __FreeBSD__ < 3
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#include <time.h>
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#endif
#include <unistd.h>
#include "defs.h"
void
randinit()
{
#if __FreeBSD__ >= 3
static int initdone; /* srandomdev() call is only required once */
if (!initdone) {
initdone = 1;
srandomdev();
}
#else
srandom((time(NULL)^getpid())+random());
#endif
}
ssize_t
fullread(int fd, void *v, size_t n)
{
size_t got, total;
for (total = 0; total < n; total += got)
switch ((got = read(fd, (char *)v + total, n - total))) {
case 0:
return total;
case -1:
if (errno == EINTR)
got = 0;
else
return -1;
}
return total;
}
static struct {
int mode;
const char *name;
} modes[] = {
{ PHYS_INTERACTIVE, "interactive" },
{ PHYS_AUTO, "auto" },
{ PHYS_DIRECT, "direct" },
{ PHYS_DEDICATED, "dedicated" },
{ PHYS_DDIAL, "ddial" },
{ PHYS_BACKGROUND, "background" },
{ PHYS_ALL, "*" },
{ 0, 0 }
};
const char *
mode2Nam(int mode)
{
int m;
for (m = 0; modes[m].mode; m++)
if (modes[m].mode == mode)
return modes[m].name;
return "unknown";
}
int
Nam2mode(const char *name)
{
int m, got, len;
len = strlen(name);
got = -1;
for (m = 0; modes[m].mode; m++)
if (!strncasecmp(name, modes[m].name, len)) {
if (modes[m].name[len] == '\0')
return modes[m].mode;
if (got != -1)
return 0;
got = m;
}
return got == -1 ? 0 : modes[got].mode;
}