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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 #include "synonyms.h" 34 #include <mtlib.h> 35 #include <stdarg.h> 36 #include <values.h> 37 #include <errno.h> 38 #include <synch.h> 39 #include <thread.h> 40 #include <sys/types.h> 41 #include "print.h" 42 #include "libc.h" 43 44 /* 45 * 32-bit shadow function of vsprintf() is included here. 46 * When using the c89 compiler to build 32-bit applications, the size 47 * of intmax_t is 32-bits, otherwise the size of intmax_t is 64-bits. 48 * The shadow function uses 32-bit size of intmax_t for %j conversion. 49 * The #pragma redefine_extname in <stdio.h> selects the proper routine 50 * at compile time for the user application. 51 * NOTE: this function is only available in the 32-bit library. 52 */ 53 54 /*VARARGS2*/ 55 int 56 #ifdef _C89_INTMAX32 57 _vsprintf_c89(char *string, const char *format, va_list ap) 58 #else 59 vsprintf(char *string, const char *format, va_list ap) 60 #endif 61 { 62 ssize_t count; 63 FILE siop; 64 65 siop._cnt = MAXINT; 66 siop._base = siop._ptr = (unsigned char *)string; 67 siop._flag = _IOREAD; /* distinguish dummy file descriptor */ 68 #ifdef _C89_INTMAX32 69 count = _ndoprnt(format, ap, &siop, _F_INTMAX32); 70 #else 71 count = _ndoprnt(format, ap, &siop, 0); 72 #endif 73 *siop._ptr = '\0'; /* plant terminating null character */ 74 75 if (count == EOF) { 76 return (EOF); 77 } 78 /* check for overflow */ 79 if ((size_t)count > MAXINT) { 80 errno = EOVERFLOW; 81 return (EOF); 82 } else { 83 return ((int)count); 84 } 85 } 86