1/*	$NetBSD$	*/
2
3/*
4 * Copyright (C) 2004, 2007  Internet Systems Consortium, Inc. ("ISC")
5 * Copyright (C) 2000, 2001  Internet Software Consortium.
6 *
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
10 *
11 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17 * PERFORMANCE OF THIS SOFTWARE.
18 */
19
20/* Id: stdio.c,v 1.6 2007/06/19 23:47:19 tbox Exp  */
21
22#include <config.h>
23
24#include <io.h>
25#include <errno.h>
26
27#include <isc/stdio.h>
28
29#include "errno2result.h"
30
31isc_result_t
32isc_stdio_open(const char *filename, const char *mode, FILE **fp) {
33	FILE *f;
34
35	f = fopen(filename, mode);
36	if (f == NULL)
37		return (isc__errno2result(errno));
38	*fp = f;
39	return (ISC_R_SUCCESS);
40}
41
42isc_result_t
43isc_stdio_close(FILE *f) {
44	int r;
45
46	r = fclose(f);
47	if (r == 0)
48		return (ISC_R_SUCCESS);
49	else
50		return (isc__errno2result(errno));
51}
52
53isc_result_t
54isc_stdio_seek(FILE *f, long offset, int whence) {
55	int r;
56
57	r = fseek(f, offset, whence);
58	if (r == 0)
59		return (ISC_R_SUCCESS);
60	else
61		return (isc__errno2result(errno));
62}
63
64isc_result_t
65isc_stdio_read(void *ptr, size_t size, size_t nmemb, FILE *f, size_t *nret) {
66	isc_result_t result = ISC_R_SUCCESS;
67	size_t r;
68
69	clearerr(f);
70	r = fread(ptr, size, nmemb, f);
71	if (r != nmemb) {
72		if (feof(f))
73			result = ISC_R_EOF;
74		else
75			result = isc__errno2result(errno);
76	}
77	if (nret != NULL)
78		*nret = r;
79	return (result);
80}
81
82isc_result_t
83isc_stdio_write(const void *ptr, size_t size, size_t nmemb, FILE *f,
84	       size_t *nret)
85{
86	isc_result_t result = ISC_R_SUCCESS;
87	size_t r;
88
89	clearerr(f);
90	r = fwrite(ptr, size, nmemb, f);
91	if (r != nmemb)
92		result = isc__errno2result(errno);
93	if (nret != NULL)
94		*nret = r;
95	return (result);
96}
97
98isc_result_t
99isc_stdio_flush(FILE *f) {
100	int r;
101
102	r = fflush(f);
103	if (r == 0)
104		return (ISC_R_SUCCESS);
105	else
106		return (isc__errno2result(errno));
107}
108
109isc_result_t
110isc_stdio_sync(FILE *f) {
111	int r;
112
113	r = _commit(_fileno(f));
114	if (r == 0)
115		return (ISC_R_SUCCESS);
116	else
117		return (isc__errno2result(errno));
118}
119
120