/*
* dhcpcd - DHCP client daemon
* Copyright (c) 2006-2009 Roy Marples <roy@marples.name>
* 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.
*/
#include <errno.h>
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "getline.h"
/* Redefine a small buffer for our simple text config files */
#undef BUFSIZ
#define BUFSIZ 128
ssize_t
getline(char ** __restrict buf, size_t * __restrict buflen,
FILE * __restrict fp)
{
size_t bytes, newlen;
char *newbuf, *p;
if (buf == NULL || buflen == NULL) {
errno = EINVAL;
return -1;
}
if (*buf == NULL)
*buflen = 0;
bytes = 0;
do {
if (feof(fp))
break;
if (*buf == NULL || bytes != 0) {
newlen = *buflen + BUFSIZ;
newbuf = realloc(*buf, newlen);
if (newbuf == NULL)
return -1;
*buf = newbuf;
*buflen = newlen;
}
p = *buf + bytes;
memset(p, 0, BUFSIZ);
if (fgets(p, BUFSIZ, fp) == NULL)
break;
bytes += strlen(p);
} while (bytes == 0 || *(*buf + (bytes - 1)) != '\n');
if (bytes == 0)
return -1;
return bytes;
}
