kernel: remove out of tree direct-io disable hack
[openwrt/staging/wigyori.git] / tools / include / getline.h
1 /*-
2 * Copyright (c) 2006 SPARTA, Inc.
3 * All rights reserved.
4 *
5 * This software was developed by SPARTA ISSO under SPAWAR contract
6 * N66001-04-C-6019 ("SEFOS").
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30 #include <sys/types.h>
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <string.h>
34
35 #ifdef __FreeBSD__
36 #include <osreldate.h>
37 #endif
38
39 #if !defined(__linux__) && !defined(__OpenBSD__) && !(defined(__APPLE__) && __DARWIN_C_LEVEL >= 200809L) && !(defined(__FreeBSD__) && __FreeBSD_version >= 800000)
40 /*
41 * Emulate glibc getline() via BSD fgetln().
42 * Note that outsize is not changed unless memory is allocated.
43 */
44 static inline ssize_t
45 getline(char **outbuf, size_t *outsize, FILE *fp)
46 {
47 size_t len;
48
49 #ifndef __CYGWIN__
50 char *buf;
51 buf = fgetln(fp, &len);
52 #else
53 char buf[512];
54 fgets(buf, sizeof(buf), fp);
55 len = strlen(buf);
56 #endif
57 if (buf == NULL)
58 return (-1);
59
60 /* Assumes realloc() accepts NULL for ptr (C99) */
61 if (*outbuf == NULL || *outsize < len + 1) {
62 void *tmp = realloc(*outbuf, len + 1);
63 if (tmp == NULL)
64 return (-1);
65 *outbuf = tmp;
66 *outsize = len + 1;
67 }
68 memcpy(*outbuf, buf, len);
69 (*outbuf)[len] = '\0';
70 return (len);
71 }
72 #endif