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 <mtlib.h>
34 #include <stdarg.h>
35 #include <values.h>
36 #include <errno.h>
37 #include <thread.h>
38 #include <synch.h>
39 #include <sys/types.h>
40 #include "print.h"
41 #include "libc.h"
42
43 /*VARARGS2*/
44 int
sprintf(char * string,const char * format,...)45 sprintf(char *string, const char *format, ...)
46 {
47 ssize_t count;
48 FILE siop;
49 va_list ap;
50
51 siop._cnt = MAXINT;
52 siop._base = siop._ptr = (unsigned char *)string;
53 siop._flag = _IOREAD; /* distinguish dummy file descriptor */
54 va_start(ap, format);
55
56 count = _ndoprnt(format, ap, &siop, 0);
57 va_end(ap);
58 *siop._ptr = '\0'; /* plant terminating null character */
59 if (count == EOF) {
60 return (EOF);
61 }
62
63 /* check for overflow */
64 if ((size_t)count > MAXINT) {
65 errno = EOVERFLOW;
66 return (EOF);
67 } else {
68 return ((int)count);
69 }
70 }
71
72 #ifndef _LP64
73
74 /*
75 * 32-bit shadow function of sprintf().
76 * When using the c89 compiler to build 32-bit applications, the size
77 * of intmax_t is 32-bits, otherwise the size of intmax_t is 64-bits.
78 * The shadow function uses 32-bit size of intmax_t for %j conversion.
79 * The #pragma redefine_extname in <stdio.h> selects the proper routine
80 * at compile time for the user application.
81 * NOTE: this function is only available in the 32-bit library.
82 */
83
84 int
_sprintf_c89(char * string,const char * format,...)85 _sprintf_c89(char *string, const char *format, ...)
86 {
87 ssize_t count;
88 va_list ap;
89
90 va_start(ap, format);
91 count = _vsprintf_c89(string, format, ap);
92 va_end(ap);
93 return ((int)count);
94 }
95
96 #endif /* _LP64 */
97