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 <synch.h>
38 #include <thread.h>
39 #include <sys/types.h>
40 #include "print.h"
41 #include "libc.h"
42
43 /*
44 * 32-bit shadow function of vsprintf() is included here.
45 * When using the c89 compiler to build 32-bit applications, the size
46 * of intmax_t is 32-bits, otherwise the size of intmax_t is 64-bits.
47 * The shadow function uses 32-bit size of intmax_t for %j conversion.
48 * The #pragma redefine_extname in <stdio.h> selects the proper routine
49 * at compile time for the user application.
50 * NOTE: this function is only available in the 32-bit library.
51 */
52
53 /*VARARGS2*/
54 int
55 #ifdef _C89_INTMAX32
_vsprintf_c89(char * string,const char * format,va_list ap)56 _vsprintf_c89(char *string, const char *format, va_list ap)
57 #else
58 vsprintf(char *string, const char *format, va_list ap)
59 #endif
60 {
61 ssize_t count;
62 FILE siop;
63
64 siop._cnt = MAXINT;
65 siop._base = siop._ptr = (unsigned char *)string;
66 siop._flag = _IOREAD; /* distinguish dummy file descriptor */
67 #ifdef _C89_INTMAX32
68 count = _ndoprnt(format, ap, &siop, _F_INTMAX32);
69 #else
70 count = _ndoprnt(format, ap, &siop, 0);
71 #endif
72 *siop._ptr = '\0'; /* plant terminating null character */
73
74 if (count == EOF) {
75 return (EOF);
76 }
77 /* check for overflow */
78 if ((size_t)count > MAXINT) {
79 errno = EOVERFLOW;
80 return (EOF);
81 } else {
82 return ((int)count);
83 }
84 }
85