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 #include "lint.h"
31 #include <mtlib.h>
32 #include <stdarg.h>
33 #include <errno.h>
34 #include <thread.h>
35 #include <synch.h>
36 #include <values.h>
37 #include "print.h"
38 #include <sys/types.h>
39 #include "libc.h"
40 #include "mse.h"
41
42 /*VARARGS1*/
43 int
printf(const char * format,...)44 printf(const char *format, ...)
45 {
46 ssize_t count;
47 rmutex_t *lk;
48 va_list ap;
49
50 va_start(ap, format);
51
52 /* Use F*LOCKFILE() macros because printf() is not async-safe. */
53 FLOCKFILE(lk, stdout);
54
55 _SET_ORIENTATION_BYTE(stdout);
56
57 if (!(stdout->_flag & _IOWRT)) {
58 /* if no write flag */
59 if (stdout->_flag & _IORW) {
60 /* if ok, cause read-write */
61 stdout->_flag |= _IOWRT;
62 } else {
63 /* else error */
64 FUNLOCKFILE(lk);
65 errno = EBADF;
66 return (EOF);
67 }
68 }
69 count = _ndoprnt(format, ap, stdout, 0);
70 va_end(ap);
71
72 /* check for errors or EOF */
73 if (FERROR(stdout) || count == EOF) {
74 FUNLOCKFILE(lk);
75 return (EOF);
76 }
77
78 FUNLOCKFILE(lk);
79
80 /* check for overflow */
81 if ((size_t)count > MAXINT) {
82 errno = EOVERFLOW;
83 return (EOF);
84 } else {
85 return ((int)count);
86 }
87 }
88
89 #ifndef _LP64
90
91 /*
92 * 32-bit shadow function of printf().
93 * When using the c89 compiler to build 32-bit applications, the size
94 * of intmax_t is 32-bits, otherwise the size of intmax_t is 64-bits.
95 * The shadow function uses 32-bit size of intmax_t for %j conversion.
96 * The #pragma redefine_extname in <stdio.h> selects the proper routine
97 * at compile time for the user application.
98 * NOTE: this function only exists in the 32-bit library.
99 */
100
101 int
_printf_c89(const char * format,...)102 _printf_c89(const char *format, ...)
103 {
104 ssize_t count;
105 va_list ap;
106
107 va_start(ap, format);
108 count = _vprintf_c89(format, ap);
109 va_end(ap);
110 return ((int)count);
111 }
112
113 #endif
114