xref: /illumos-gate/usr/src/lib/libc/port/stdio/scanf.c (revision 7257d1b4)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1988 AT&T	*/
28 /*	  All Rights Reserved  	*/
29 
30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
31 
32 #include "lint.h"
33 #include "file64.h"
34 #include "mtlib.h"
35 #include <stdio.h>
36 #include <stdarg.h>
37 #include <string.h>
38 #include <thread.h>
39 #include <synch.h>
40 #include "libc.h"
41 #include "stdiom.h"
42 #include "mse.h"
43 #include <stdio_ext.h>
44 
45 /*VARARGS1*/
46 int
scanf(const char * fmt,...)47 scanf(const char *fmt, ...)
48 {
49 	int ret;
50 	va_list ap;
51 
52 	va_start(ap, fmt);
53 	ret = vscanf(fmt, ap);
54 	va_end(ap);
55 
56 	return (ret);
57 }
58 
59 /*VARARGS2*/
60 int
fscanf(FILE * iop,const char * fmt,...)61 fscanf(FILE *iop, const char *fmt, ...)
62 {
63 	int ret;
64 	va_list ap;
65 
66 	va_start(ap, fmt);
67 	ret = vfscanf(iop, fmt, ap);
68 	va_end(ap);
69 
70 	return (ret);
71 }
72 
73 /*VARARGS2*/
74 int
sscanf(const char * str,const char * fmt,...)75 sscanf(const char *str, const char *fmt, ...)
76 {
77 	int ret;
78 	va_list ap;
79 
80 	va_start(ap, fmt);
81 	ret = vsscanf(str, fmt, ap);
82 	va_end(ap);
83 
84 	return (ret);
85 }
86 
87 #ifndef _LP64
88 
89 /*
90  * 32-bit shadow functions _scanf_c89(), _fscanf_c89(), _sscanf_c89()
91  * included here.
92  * When using the c89 compiler to build 32-bit applications, the size
93  * of intmax_t is 32-bits, otherwise the size of intmax_t is 64-bits.
94  * The shadow function uses 32-bit size of intmax_t for %j conversion.
95  * The #pragma redefine_extname in <stdio.h> selects the proper routine
96  * at compile time for the user application.
97  * NOTE: the shadow function only exists in the 32-bit library.
98  */
99 
100 int
_scanf_c89(const char * fmt,...)101 _scanf_c89(const char *fmt, ...)
102 {
103 	int ret;
104 	va_list ap;
105 
106 	va_start(ap, fmt);
107 	ret = _vscanf_c89(fmt, ap);
108 	va_end(ap);
109 
110 	return (ret);
111 }
112 
113 int
_fscanf_c89(FILE * iop,const char * fmt,...)114 _fscanf_c89(FILE *iop, const char *fmt, ...)
115 {
116 	int ret;
117 	va_list ap;
118 
119 	va_start(ap, fmt);
120 	ret = _vfscanf_c89(iop, fmt, ap);
121 	va_end(ap);
122 
123 	return (ret);
124 }
125 
126 int
_sscanf_c89(const char * str,const char * fmt,...)127 _sscanf_c89(const char *str, const char *fmt, ...)
128 {
129 	int ret;
130 	va_list ap;
131 
132 	va_start(ap, fmt);
133 	ret = _vsscanf_c89(str, fmt, ap);
134 	va_end(ap);
135 
136 	return (ret);
137 }
138 
139 #endif	/* _LP64 */
140