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 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