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https://git.rtems.org/rtems-libbsd/
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f2ed769880
Import DHCPCD(8) from: http://roy.marples.name/projects/dhcpcd/ The upstream sources can be obtained via: fossil clone http://roy.marples.name/projects/dhcpcd The imported version is 2014-01-29 19:46:44 [6b209507bb].
76 lines
2.3 KiB
C
76 lines
2.3 KiB
C
/*
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* dhcpcd - DHCP client daemon
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* Copyright (c) 2006-2009 Roy Marples <roy@marples.name>
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* All rights reserved
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <errno.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "getline.h"
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/* Redefine a small buffer for our simple text config files */
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#undef BUFSIZ
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#define BUFSIZ 128
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ssize_t
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getline(char ** __restrict buf, size_t * __restrict buflen,
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FILE * __restrict fp)
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{
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size_t bytes, newlen;
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char *newbuf, *p;
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if (buf == NULL || buflen == NULL) {
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errno = EINVAL;
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return -1;
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}
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if (*buf == NULL)
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*buflen = 0;
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bytes = 0;
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do {
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if (feof(fp))
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break;
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if (*buf == NULL || bytes != 0) {
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newlen = *buflen + BUFSIZ;
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newbuf = realloc(*buf, newlen);
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if (newbuf == NULL)
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return -1;
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*buf = newbuf;
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*buflen = newlen;
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}
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p = *buf + bytes;
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memset(p, 0, BUFSIZ);
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if (fgets(p, BUFSIZ, fp) == NULL)
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break;
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bytes += strlen(p);
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} while (bytes == 0 || *(*buf + (bytes - 1)) != '\n');
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if (bytes == 0)
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return -1;
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return bytes;
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}
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